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Autres articles (16)
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Installation en mode ferme
4 février 2011, parLe mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
C’est la méthode que nous utilisons sur cette même plateforme.
L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...) -
Les formats acceptés
28 janvier 2010, parLes commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
ffmpeg -codecs ffmpeg -formats
Les format videos acceptés en entrée
Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
Les formats vidéos de sortie possibles
Dans un premier temps on (...) -
La sauvegarde automatique de canaux SPIP
1er avril 2010, parDans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)
Sur d’autres sites (3973)
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FFmpeg Time Skipping after concat
18 septembre 2017, par Manul Hüttingeri am trying to concatenate videos and in my resulting Videos i have the issue that at the concat edges my video is skipping/glitching.
General Workflow
in general my workflow looks like this
- Stream via ffmpeg
- capture stream and segment all 2 mins in to TS files
- concat TS file to MP4 video
- cut MP4 video at the desired Timestamps
Detailed Look at Step 4
as i am handling 2-hours+ videos i don’t want to re-encode the whole video. So i am looking for the closest I Frames to my In and Outpoint and cut 1 Frame before/after. As my result i get 3 Videos (front/middle/back). Now it is only needed to re-encode front and back and concat all three Videos.
So far the theoryGeneral Observations
As i look at my resulting video, i obeservated the following.
frontpart duration is e.g. 3.2 secs. i skip framewise through the Video and get nice and clean timestamps ( 00:00:02.620, 00:00:02:660 )
As soon as i get to my cutting edge the timestamps are skipping some frames and changing (00:00:03.200, 00:00:03.408 ,00:00:03.409). When i look only at the single frame images, their are no missing/dropped frameswhen i concat my TS files, the results contains a messed up frame rate e.g from constant 25 F/s to 25.0096 F/s
FFMPEG instructions
FRONT Video
ffmpeg -ss 232.52 -i src.mp4 -t 3.24 -filter_complex "setpts=PTS-STARTPTS" -vcodec libx264 -profile:v baseline -level 31 -bf 0 -f mp4 -y front.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> setpts (graph 0)
setpts (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x31ea160] using SAR=1/1
[libx264 @ 0x31ea160] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
[libx264 @ 0x31ea160] profile Constrained Baseline, level 3.1
[libx264 @ 0x31ea160] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'front.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 81 fps= 31 q=-1.0 Lsize= 151kB time=00:00:03.25 bitrate= 379.5kbits/s speed=1.23x
video:119kB audio:28kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.531915%
[libx264 @ 0x31ea160] frame I:1 Avg QP:17.43 size: 38268
[libx264 @ 0x31ea160] frame P:80 Avg QP:21.05 size: 1038
[libx264 @ 0x31ea160] mb I I16..4: 71.4% 0.0% 28.6%
[libx264 @ 0x31ea160] mb P I16..4: 0.2% 0.0% 0.0% P16..4: 7.8% 1.8% 0.6% 0.0% 0.0% skip:89.6%
[libx264 @ 0x31ea160] coded y,uvDC,uvAC intra: 21.8% 40.8% 23.1% inter: 1.6% 4.2% 0.2%
[libx264 @ 0x31ea160] i16 v,h,dc,p: 66% 25% 5% 4%
[libx264 @ 0x31ea160] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 28% 15% 4% 4% 5% 4% 5% 4%
[libx264 @ 0x31ea160] i8c dc,h,v,p: 51% 24% 21% 4%
[libx264 @ 0x31ea160] ref P L0: 74.3% 15.2% 10.5%
[libx264 @ 0x31ea160] kb/s:299.56
[aac @ 0x31edfa0] Qavg: 123.323MIDDLE Video
ffmpeg -ss 235.88 -i src.mp4 -c copy -t 1492.96 -f mp4 -y middle.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, mp4, to 'middle.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (Main) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=2-31, 537 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=37329 fps=16333 q=-1.0 Lsize= 113774kB time=00:24:52.95 bitrate= 624.3kbits/s speed= 653x
video:100359kB audio:12095kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.173957%BACK Video
ffmpeg -ss 1728.88 -i 'src.mp4' -t 3.9199999999998 -filter_complex "setpts=PTS-STARTPTS" -vcodec libx264 -profile:v baseline -level 31 -bf 0 -f mp4 -y back.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> setpts (graph 0)
setpts (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x2672160] using SAR=1/1
[libx264 @ 0x2672160] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
[libx264 @ 0x2672160] profile Constrained Baseline, level 3.1
[libx264 @ 0x2672160] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'back.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 98 fps= 27 q=-1.0 Lsize= 268kB time=00:00:03.92 bitrate= 559.2kbits/s speed=1.07x
video:230kB audio:33kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.538479%
[libx264 @ 0x2672160] frame I:1 Avg QP:19.57 size:112129
[libx264 @ 0x2672160] frame P:97 Avg QP:21.68 size: 1270
[libx264 @ 0x2672160] mb I I16..4: 35.4% 0.0% 64.6%
[libx264 @ 0x2672160] mb P I16..4: 0.2% 0.0% 0.1% P16..4: 6.9% 2.0% 0.8% 0.0% 0.0% skip:90.1%
[libx264 @ 0x2672160] coded y,uvDC,uvAC intra: 54.4% 69.1% 54.2% inter: 2.0% 3.6% 0.3%
[libx264 @ 0x2672160] i16 v,h,dc,p: 63% 23% 8% 6%
[libx264 @ 0x2672160] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 17% 11% 6% 8% 9% 7% 8% 8%
[libx264 @ 0x2672160] i8c dc,h,v,p: 50% 18% 24% 7%
[libx264 @ 0x2672160] ref P L0: 81.8% 11.5% 6.7%
[libx264 @ 0x2672160] kb/s:480.15
[aac @ 0x2675fa0] Qavg: 119.994CONCAT Videos
ffmpeg -f concat -safe 0 -i concat.txt -c copy -r 25 -y /concat.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, concat, from 'concat.txt':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x464 [SAR 1:1 DAR 80:29], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1(und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp, 74 kb/s
Output #0, mp4, to 'concat.mp4':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (Constrained Baseline) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x464 [SAR 1:1 DAR 80:29], q=2-31, 25 fps, 25 tbr, 12800 tbn, 25 tbc
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 74 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=37508 fps=7256 q=-1.0 Lsize= 114285kB time=00:25:00.59 bitrate= 623.9kbits/s speed= 290x
video:100672kB audio:12598kB subtitle:0kB other streams:0kB global headers:1kB muxing overhead: 0.896435%
thank you very much.
If needed i can provide samplesManu
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How to combine multiple images and multiple audio files into one video with ffmpeg ?
14 mars, par nachocabI have two images
image1.pngandimage2.png, they both have the same dimensions. I also have two audio filesaudio1.wavandaudio2.wavthey each have different lengths. I want to make a video that showsimage1.pngduringaudio1.wavand thenimage2.pngoveraudio2.wav.


I've tried two methods, but they don't work. The images show correctly, but the durations are not synced with the audio.



Method 1 : create videos separately and combine them :



image1 => video1



ffmpeg -loop 1 \
 -y \
 -i "image1.png" \
 -i "audio1.wav" \
 -c:v libx264 -tune stillimage -pix_fmt yuv420p \
 -c:a aac -b:a 192k \
 -shortest \
 "video1.mp4"

ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, png_pipe, from 'image1.png':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: png, rgba(pc), 800x800, 25 fps, 25 tbr, 25 tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'audio1.wav':
 Metadata:
 title : untitled
 track : 1
 Duration: 00:00:03.70, bitrate: 1411 kb/s
 Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
 Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fead980bc00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fead980bc00] profile High, level 3.1
[libx264 @ 0x7fead980bc00] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:-3:-3 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=2.00:0.70 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-4 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.20
Output #0, mp4, to 'video1.mp4':
 Metadata:
 encoder : Lavf57.71.100
 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p(progressive), 800x800, q=-1--1, 25 fps, 12800 tbn, 25 tbc
 Metadata:
 encoder : Lavc57.89.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
 Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 192 kb/s
 Metadata:
 encoder : Lavc57.89.100 aac
frame= 151 fps=0.0 q=-1.0 Lsize= 106kB time=00:00:05.92 bitrate= 146.6kbits/s speed=6.73x
video:13kB audio:87kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.016360%
[libx264 @ 0x7fead980bc00] frame I:1 Avg QP:14.87 size: 5746
[libx264 @ 0x7fead980bc00] frame P:38 Avg QP:12.15 size: 51
[libx264 @ 0x7fead980bc00] frame B:112 Avg QP:16.81 size: 48
[libx264 @ 0x7fead980bc00] consecutive B-frames: 0.7% 1.3% 0.0% 98.0%
[libx264 @ 0x7fead980bc00] mb I I16..4: 46.9% 44.7% 8.4%
[libx264 @ 0x7fead980bc00] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:99.9%
[libx264 @ 0x7fead980bc00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.2% 0.0% 0.0% direct: 0.0% skip:99.7% L0:63.5% L1:36.5% BI: 0.0%
[libx264 @ 0x7fead980bc00] 8x8 transform intra:40.7% inter:20.0%
[libx264 @ 0x7fead980bc00] coded y,uvDC,uvAC intra: 4.9% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7fead980bc00] i16 v,h,dc,p: 82% 13% 4% 0%
[libx264 @ 0x7fead980bc00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 74% 2% 24% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x7fead980bc00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 33% 24% 32% 2% 2% 2% 2% 1% 2%
[libx264 @ 0x7fead980bc00] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7fead980bc00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fead980bc00] ref B L0: 48.0% 52.0%
[libx264 @ 0x7fead980bc00] ref B L1: 99.5% 0.5%
[libx264 @ 0x7fead980bc00] kb/s:17.36
[aac @ 0x7fead981b400] Qavg: 535.938



image2 => video2



ffmpeg -loop 1 \
 -y \
 -i "image2.png" \
 -i "audio2.wav" \
 -c:v libx264 -tune stillimage -pix_fmt yuv420p \
 -c:a aac -b:a 192k \
 -shortest \
 "video2.mp4"

ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, png_pipe, from 'image2.png':
 Duration: N/A, bitrate: N/A
 Stream #0:0: Video: png, rgba(pc), 800x800, 25 fps, 25 tbr, 25 tbn, 25 tbc
Guessed Channel Layout for Input Stream #1.0 : stereo
Input #1, wav, from 'audio2.wav':
 Metadata:
 title : untitled
 track : 2
 Duration: 00:00:05.49, bitrate: 1411 kb/s
 Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
 Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fa0e201ce00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x7fa0e201ce00] profile High, level 3.1
[libx264 @ 0x7fa0e201ce00] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:-3:-3 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=2.00:0.70 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-4 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.20
Output #0, mp4, to 'video2.mp4':
 Metadata:
 encoder : Lavf57.71.100
 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p(progressive), 800x800, q=-1--1, 25 fps, 12800 tbn, 25 tbc
 Metadata:
 encoder : Lavc57.89.100 libx264
 Side data:
 cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
 Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 192 kb/s
 Metadata:
 encoder : Lavc57.89.100 aac
frame= 195 fps=177 q=-1.0 Lsize= 150kB time=00:00:07.68 bitrate= 160.2kbits/s speed=6.96x
video:14kB audio:129kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.516541%
[libx264 @ 0x7fa0e201ce00] frame I:1 Avg QP: 9.03 size: 6402
[libx264 @ 0x7fa0e201ce00] frame P:49 Avg QP: 6.59 size: 41
[libx264 @ 0x7fa0e201ce00] frame B:145 Avg QP: 9.67 size: 39
[libx264 @ 0x7fa0e201ce00] consecutive B-frames: 0.5% 1.0% 0.0% 98.5%
[libx264 @ 0x7fa0e201ce00] mb I I16..4: 54.7% 36.0% 9.3%
[libx264 @ 0x7fa0e201ce00] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 0.0% 0.0% 0.0% 0.0% 0.0% skip:100.0%
[libx264 @ 0x7fa0e201ce00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 0.2% 0.0% 0.0% direct: 0.0% skip:99.8% L0:70.1% L1:29.9% BI: 0.0%
[libx264 @ 0x7fa0e201ce00] 8x8 transform intra:36.0% inter:14.3%
[libx264 @ 0x7fa0e201ce00] coded y,uvDC,uvAC intra: 4.3% 0.0% 0.0% inter: 0.0% 0.0% 0.0%
[libx264 @ 0x7fa0e201ce00] i16 v,h,dc,p: 91% 5% 4% 0%
[libx264 @ 0x7fa0e201ce00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 72% 8% 20% 0% 0% 0% 0% 0% 0%
[libx264 @ 0x7fa0e201ce00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 36% 23% 25% 4% 3% 3% 3% 2% 2%
[libx264 @ 0x7fa0e201ce00] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x7fa0e201ce00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x7fa0e201ce00] ref P L0: 83.3% 8.3% 8.3%
[libx264 @ 0x7fa0e201ce00] ref B L0: 40.1% 59.9%
[libx264 @ 0x7fa0e201ce00] kb/s:14.38
[aac @ 0x7fa0e201e600] Qavg: 595.040



When I import these into Final Cut I can see that both videos get around 2:30 seconds of added silence (not present in the audio) :









concatenating video1 and video2



ffmpeg -i "video1.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate1.ts
ffmpeg -i "video2.mp4" -c copy -bsf:v h264_mp4toannexb -f mpegts intermediate2.ts
ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc "video_combined.mp4"

ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video1.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Duration: 00:00:06.04, start: 0.000000, bitrate: 143 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, 18 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Output #0, mpegts, to 'intermediate1.ts':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, q=2-31, 18 kb/s, 25 fps, 25 tbr, 90k tbn, 12800 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 151 fps=0.0 q=-1.0 Lsize= 135kB time=00:00:05.92 bitrate= 187.5kbits/s speed=2.43e+03x
video:14kB audio:87kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 34.259724%
ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video2.mp4':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Duration: 00:00:07.80, start: 0.000000, bitrate: 157 kb/s
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, 15 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Output #0, mpegts, to 'intermediate2.ts':
 Metadata:
 major_brand : isom
 minor_version : 512
 compatible_brands: isomiso2avc1mp41
 encoder : Lavf57.71.100
 Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x800, q=2-31, 15 kb/s, 25 fps, 25 tbr, 90k tbn, 12800 tbc (default)
 Metadata:
 handler_name : VideoHandler
 Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 192 kb/s (default)
 Metadata:
 handler_name : SoundHandler
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 195 fps=0.0 q=-1.0 Lsize= 192kB time=00:00:07.68 bitrate= 204.8kbits/s speed=2.6e+03x
video:14kB audio:129kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 33.605099%
ffmpeg version 3.3.3 Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.38)
 configuration: --prefix=/usr/local/Cellar/ffmpeg/3.3.3 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.2.0/include/openjpeg-2.2 --enable-nonfree --enable-vda
 libavutil 55. 58.100 / 55. 58.100
 libavcodec 57. 89.100 / 57. 89.100
 libavformat 57. 71.100 / 57. 71.100
 libavdevice 57. 6.100 / 57. 6.100
 libavfilter 6. 82.100 / 6. 82.100
 libavresample 3. 5. 0 / 3. 5. 0
 libswscale 4. 6.100 / 4. 6.100
 libswresample 2. 7.100 / 2. 7.100
 libpostproc 54. 5.100 / 54. 5.100
Input #0, mpegts, from 'concat:intermediate1.ts|intermediate2.ts':
 Duration: 00:00:07.82, start: 1.456778, bitrate: 342 kb/s
 Program 1
 Metadata:
 service_name : Service01
 service_provider: FFmpeg
 Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 800x800, 25 fps, 25 tbr, 90k tbn, 50 tbc
 Stream #0:1[0x101](und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp, 169 kb/s
Output #0, mp4, to 'video_combined.mp4':
 Metadata:
 encoder : Lavf57.71.100
 Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p(progressive), 800x800, q=2-31, 25 fps, 25 tbr, 90k tbn, 90k tbc
 Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 169 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 346 fps=0.0 q=-1.0 Lsize= 257kB time=00:00:13.74 bitrate= 153.3kbits/s speed=1.54e+03x
video:30kB audio:217kB subtitle:0kB other streams:0kB global headers:1kB muxing overhead: 4.243830%



The output of the combined video contains the extra silences, but the second audio doesn't combine properly :






Method 2 : Create combined video directly



ffmpeg -f concat -i input.txt -map 0 \
 -vcodec libx264 \
 -aprofile aac_low -acodec aac -strict experimental -cutoff 15000 -b:a 32k 
 "video_combined.mp4"



Any ideas ?


-
FFmpeg skipping time after concat
19 septembre 2017, par Manul HüttingerI am trying to concatenate videos and in my resulting Videos I have the issue that at the concat edges my video is skipping/glitching.
General Workflow
in general my workflow looks like this
- Stream via ffmpeg
- capture stream and segment all 2 mins in to TS files
- concat TS file to MP4 video
- cut MP4 video at the desired Timestamps
Detailed Look at Step 4
as I am handling 2-hours+ videos I don’t want to re-encode the whole video. So I am looking for the closest I Frames to my In and Outpoint and cut 1 Frame before/after. As my result I get 3 Videos (front/middle/back). Now it is only needed to re-encode front and back and concat all three Videos.
So far the theoryGeneral Observations
As I look at my resulting video, I obeservated the following.
frontpart duration is e.g. 3.2 secs. I skip framewise through the Video and get nice and clean timestamps ( 00:00:02.620, 00:00:02:660 )
As soon as I get to my cutting edge the timestamps are skipping some frames and changing (00:00:03.200, 00:00:03.408 ,00:00:03.409). When I look only at the single frame images, their are no missing/dropped frameswhen I concat my TS files, the results contains a messed up frame rate e.g from constant 25 F/s to 25.0096 F/s
FFMPEG instructions
FRONT Video
ffmpeg -ss 232.52 -i src.mp4 -t 3.24 -filter_complex "setpts=PTS-STARTPTS" -vcodec libx264 -profile:v baseline -level 31 -bf 0 -f mp4 -y front.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> setpts (graph 0)
setpts (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x31ea160] using SAR=1/1
[libx264 @ 0x31ea160] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
[libx264 @ 0x31ea160] profile Constrained Baseline, level 3.1
[libx264 @ 0x31ea160] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'front.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 81 fps= 31 q=-1.0 Lsize= 151kB time=00:00:03.25 bitrate= 379.5kbits/s speed=1.23x
video:119kB audio:28kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.531915%
[libx264 @ 0x31ea160] frame I:1 Avg QP:17.43 size: 38268
[libx264 @ 0x31ea160] frame P:80 Avg QP:21.05 size: 1038
[libx264 @ 0x31ea160] mb I I16..4: 71.4% 0.0% 28.6%
[libx264 @ 0x31ea160] mb P I16..4: 0.2% 0.0% 0.0% P16..4: 7.8% 1.8% 0.6% 0.0% 0.0% skip:89.6%
[libx264 @ 0x31ea160] coded y,uvDC,uvAC intra: 21.8% 40.8% 23.1% inter: 1.6% 4.2% 0.2%
[libx264 @ 0x31ea160] i16 v,h,dc,p: 66% 25% 5% 4%
[libx264 @ 0x31ea160] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 28% 15% 4% 4% 5% 4% 5% 4%
[libx264 @ 0x31ea160] i8c dc,h,v,p: 51% 24% 21% 4%
[libx264 @ 0x31ea160] ref P L0: 74.3% 15.2% 10.5%
[libx264 @ 0x31ea160] kb/s:299.56
[aac @ 0x31edfa0] Qavg: 123.323MIDDLE Video
ffmpeg -ss 235.88 -i src.mp4 -c copy -t 1492.96 -f mp4 -y middle.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Output #0, mp4, to 'middle.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0(und): Video: h264 (Main) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=2-31, 537 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=37329 fps=16333 q=-1.0 Lsize= 113774kB time=00:24:52.95 bitrate= 624.3kbits/s speed= 653x
video:100359kB audio:12095kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.173957%BACK Video
ffmpeg -ss 1728.88 -i 'src.mp4' -t 3.9199999999998 -filter_complex "setpts=PTS-STARTPTS" -vcodec libx264 -profile:v baseline -level 31 -bf 0 -f mp4 -y back.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'src.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf55.33.100
Duration: 01:06:00.33, start: 0.000000, bitrate: 610 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], 537 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 65 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 (h264) -> setpts (graph 0)
setpts (graph 0) -> Stream #0:0 (libx264)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[libx264 @ 0x2672160] using SAR=1/1
[libx264 @ 0x2672160] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX LZCNT
[libx264 @ 0x2672160] profile Constrained Baseline, level 3.1
[libx264 @ 0x2672160] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'back.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x464 [SAR 1:1 DAR 80:29], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 69 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.89.100 aac
frame= 98 fps= 27 q=-1.0 Lsize= 268kB time=00:00:03.92 bitrate= 559.2kbits/s speed=1.07x
video:230kB audio:33kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.538479%
[libx264 @ 0x2672160] frame I:1 Avg QP:19.57 size:112129
[libx264 @ 0x2672160] frame P:97 Avg QP:21.68 size: 1270
[libx264 @ 0x2672160] mb I I16..4: 35.4% 0.0% 64.6%
[libx264 @ 0x2672160] mb P I16..4: 0.2% 0.0% 0.1% P16..4: 6.9% 2.0% 0.8% 0.0% 0.0% skip:90.1%
[libx264 @ 0x2672160] coded y,uvDC,uvAC intra: 54.4% 69.1% 54.2% inter: 2.0% 3.6% 0.3%
[libx264 @ 0x2672160] i16 v,h,dc,p: 63% 23% 8% 6%
[libx264 @ 0x2672160] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 17% 11% 6% 8% 9% 7% 8% 8%
[libx264 @ 0x2672160] i8c dc,h,v,p: 50% 18% 24% 7%
[libx264 @ 0x2672160] ref P L0: 81.8% 11.5% 6.7%
[libx264 @ 0x2672160] kb/s:480.15
[aac @ 0x2675fa0] Qavg: 119.994CONCAT Videos
ffmpeg -f concat -safe 0 -i concat.txt -c copy -r 25 -y /concat.mp4
ffmpeg version n3.3 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
configuration: --prefix=/usr --extra-cflags=-I/usr/include --extra-ldflags=-L/usr/lib --bindir=/usr/local/bin --extra-libs=-ldl --enable-gpl --enable-libass --enable-libfdk-aac --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-libssh --enable-openssl
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, concat, from 'concat.txt':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x464 [SAR 1:1 DAR 80:29], 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1(und): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp, 74 kb/s
Output #0, mp4, to 'concat.mp4':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (Constrained Baseline) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x464 [SAR 1:1 DAR 80:29], q=2-31, 25 fps, 25 tbr, 12800 tbn, 25 tbc
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, mono, fltp, 74 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=37508 fps=7256 q=-1.0 Lsize= 114285kB time=00:25:00.59 bitrate= 623.9kbits/s speed= 290x
video:100672kB audio:12598kB subtitle:0kB other streams:0kB global headers:1kB muxing overhead: 0.896435%
If needed I can provide samples.
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