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Autres articles (89)

Publier sur MédiaSpip

13 juin 2013

Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir
Initialisation de MediaSPIP (préconfiguration)

20 février 2010, par kent1

Lors de l’installation de MediaSPIP, celui-ci est préconfiguré pour les usages les plus fréquents.
Cette préconfiguration est réalisée par un plugin activé par défaut et non désactivable appelé MediaSPIP Init.
Ce plugin sert à préconfigurer de manière correcte chaque instance de MediaSPIP. Il doit donc être placé dans le dossier plugins-dist/ du site ou de la ferme pour être installé par défaut avant de pouvoir utiliser le site.
Dans un premier temps il active ou désactive des options de SPIP qui ne le (...)
Les formats acceptés

28 janvier 2010, par kent1

Les 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 (...)

1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ... | 30

Sur d’autres sites (6636)

FFmpeg, timecode audio input, overlay

9 mai 2015, par Wayde

Good Morning !
So i have been playing around with FFMpeg the last few days it seems rather amazing. I do have one challenege i am trying to over come. I like FFMpeg because it is command line and i will be able to script most of the things i want to do.
Here is my Challenge, We run the same shows week after week, and timecode is used for ALL our automation, lighting, camera cues, sound and so on. I want to be able to record the shows with the timecode burnt in, keep in mind this audio timecode input does start and stop during the shows, therefor it cannot be part of the video stream.

The Setup, Windows 7, Blackmagic DeckLink SDI Capture card, timecode in via Line In.

Now, i dont mind if this overlay of timecode is a post process after being recorded as the audio input of timecode can be recorded as an audio stream and removed once the burn in has been done.

I have searched and searched but yet to find a simple easy way to do this.

Thank you.

FFMPEG : custom sequence input images

14 juillet 2016, par gabber

I created a video from a set of images.

The command look like :

ffmpeg -i bg.jpeg -i img_%d.png -filter_complex overlay=5:H-h-5[b]-shortest testvid.mp4

Problem :

The input -i img_%d.png means img_0.png, img_1.png, img_2.png, ...

But I have custom sequence like this : {img_0.png, img_1.png, img_1.png, img_2.png, img_1.png, img5.png, img_4.png}

Question :

Can I put my image sequence into input of ffmpeg ?

Updated

cmd :

ffmpeg -i bg.jpeg -f concat -fflags +genpts -i test.txt -filter_complex overlay=5:H-h-5 -shortest testvid.mp4

output :

ffmpeg version 3.1.1 Copyright (c) 2000-2016 the FFmpeg developers

  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)

  configuration: --enable-gpl --enable-libx264 --enable-libfreetype

  libavutil      55. 28.100 / 55. 28.100

  libavcodec     57. 48.101 / 57. 48.101

  libavformat    57. 41.100 / 57. 41.100

  libavdevice    57.  0.101 / 57.  0.101

  libavfilter     6. 47.100 /  6. 47.100

  libswscale      4.  1.100 /  4.  1.100

  libswresample   2.  1.100 /  2.  1.100

  libpostproc    54.  0.100 / 54.  0.100

Input #0, image2, from 'bg.jpeg':

  Duration: 00:00:00.04, start: 0.000000, bitrate: 47329 kb/s

    Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 600x800 [SAR 1:1 DAR 3:4], 25 tbr, 25 tbn, 25 tbc

Input #1, concat, from 'test.txt':

  Duration: N/A, start: 0.000000, bitrate: N/A

    Stream #1:0: Video: png, pal8(pc), 200x200, 25 tbr, 25 tbn, 25 tbc

File 'testvid.mp4' already exists. Overwrite ? [y/N] y

[swscaler @ 0x2a18360] deprecated pixel format used, make sure you did set range correctly

[libx264 @ 0x2a05d80] using SAR=1/1

[libx264 @ 0x2a05d80] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2

[libx264 @ 0x2a05d80] profile High, level 3.1

[libx264 @ 0x2a05d80] 264 - core 148 r2705 3f5ed56 - H.264/MPEG-4 AVC codec - Copyleft 2003-2016 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 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=1:1.00

[mp4 @ 0x2a04b20] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.

Output #0, mp4, to 'testvid.mp4':

  Metadata:

    encoder         : Lavf57.41.100

    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 600x800 [SAR 1:1 DAR 3:4], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)

    Metadata:

      encoder         : Lavc57.48.101 libx264

    Side data:

      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1

Stream mapping:

  Stream #0:0 (mjpeg) -> overlay:main

  Stream #1:0 (png) -> overlay:overlay

  overlay -> Stream #0:0 (libx264)

Press [q] to stop, [?] for help

[concat @ 0x29e2400] DTS -230575710986777 &lt; 0 out of order

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

DTS -230575710986777, next:40000 st:0 invalid dropping

PTS -230575710986777, next:40000 invalid dropping st:0

frame=    4 fps=0.0 q=-1.0 Lsize=      39kB time=00:00:00.04 bitrate=8050.9kbits/s dup=0 drop=65 speed=0.516x    

video:39kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.222729%

[libx264 @ 0x2a05d80] frame I:1     Avg QP:24.64  size: 37536

[libx264 @ 0x2a05d80] frame P:1     Avg QP:27.18  size:  1085

[libx264 @ 0x2a05d80] frame B:2     Avg QP:29.93  size:    73

[libx264 @ 0x2a05d80] consecutive B-frames: 25.0%  0.0% 75.0%  0.0%

[libx264 @ 0x2a05d80] mb I  I16..4:  1.7% 86.1% 12.2%

[libx264 @ 0x2a05d80] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  1.7%  1.3%  1.5%  0.0%  0.0%    skip:95.5%

[libx264 @ 0x2a05d80] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  2.4%  0.0%  0.0%  direct: 0.0%  skip:97.6%  L0:62.6% L1:37.4% BI: 0.0%

[libx264 @ 0x2a05d80] 8x8 transform intra:86.1% inter:33.9%

[libx264 @ 0x2a05d80] coded y,uvDC,uvAC intra: 91.5% 84.4% 38.5% inter: 0.6% 0.4% 0.1%

[libx264 @ 0x2a05d80] i16 v,h,dc,p:  9% 12%  3% 76%

[libx264 @ 0x2a05d80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 19% 17%  8%  4%  5%  5%  7% 10%

[libx264 @ 0x2a05d80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 22% 18% 10% 10%  9%  7% 10%  8%  7%

[libx264 @ 0x2a05d80] i8c dc,h,v,p: 45% 21% 26%  8%

[libx264 @ 0x2a05d80] Weighted P-Frames: Y:0.0% UV:0.0%

[libx264 @ 0x2a05d80] ref B L0: 84.2% 15.8%

[libx264 @ 0x2a05d80] kb/s:1938.35

ffmpeg : how to correctly program input framerate calculation, given desired video length duration and output framerate ?

19 septembre 2015, par user89

Let us say that I have n pictures named as imgXY.png (where XY represent the numbers 0 to n-1, properly padded with zeros).

From these, I would like to create a video that is t seconds long, that has an (output) framerate R.

I want to figure out what the input framerate should be, so I do the following calculation :

time spent per frame : t_per_frame = t/n
input framerate : 1/t_per_frame = n/t

However, when I then try to create a movie using the following command :

ffmpeg -framerate n/t -i img%02d.png -r 30 test_output.mp4

I don’t get a movie that is t seconds long, and only two of the frames end up getting displayed. Why is this the case ?

The following questions were unhelpful :

How to successfully use ffmpeg to convert images into videos

Turning images into videos with ffmpeg

I think I am misunderstanding what is meant by input framerate, and what is meant by output framerate. Could you help clarify ? I am using a Python script to call ffmpeg, as documented here : http://zulko.github.io/blog/2013/09/27/read-and-write-video-frames-in-python-using-ffmpeg/

Here’s the output from the following manually executed command :

ffmpeg -framerate 24/5 -i img%02d.png -c:v libx264 -r 30 -pix_fmt yuv420p test_output.mp4

ffmpeg version N-75204-g314bc20 Copyright (c) 2000-2015 the FFmpeg developers

  built with gcc 4.9.3 (GCC)

  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av

isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab

le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --

enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l

ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab

le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en

able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena

ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc

 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl

e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena

ble-decklink --enable-opencl --enable-zlib

  libavutil      55.  2.100 / 55.  2.100

  libavcodec     57.  1.100 / 57.  1.100

  libavformat    57.  0.100 / 57.  0.100

  libavdevice    57.  0.100 / 57.  0.100

  libavfilter     6.  1.100 /  6.  1.100

  libswscale      4.  0.100 /  4.  0.100

  libswresample   2.  0.100 /  2.  0.100

  libpostproc    54.  0.100 / 54.  0.100

Input #0, image2, from 'img%02d.png':

  Duration: 00:00:00.42, start: 0.000000, bitrate: N/A

    Stream #0:0: Video: png, rgb24(pc), 800x400, 4.80 tbr, 4.80 tbn, 4.80 tbc

File 'test_output.mp4' already exists. Overwrite ? [y/N] y

[libx264 @ 0000000004f16ba0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2

AVX FMA3 AVX2 LZCNT BMI2

[libx264 @ 0000000004f16ba0] profile High, level 3.0

[libx264 @ 0000000004f16ba0] 264 - core 148 r2597 e86f3a1 - H.264/MPEG-4 AVC cod

ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r

ef=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed

_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pski

p=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 dec

imate=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=1:1.00

Output #0, mp4, to 'test_output.mp4':

  Metadata:

    encoder         : Lavf57.0.100

    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 800x40

0, q=-1--1, 30 fps, 15360 tbn, 30 tbc

    Metadata:

      encoder         : Lavc57.1.100 libx264

Stream mapping:

  Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))

Press [q] to stop, [?] for help

frame=   12 fps=0.0 q=-1.0 Lsize=       3kB time=00:00:00.33 bitrate=  62.2kbits

/s dup=10 drop=0

video:2kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing ove

rhead: 60.557274%

[libx264 @ 0000000004f16ba0] frame I:1     Avg QP:10.12  size:   566

[libx264 @ 0000000004f16ba0] frame P:3     Avg QP:18.10  size:    62

[libx264 @ 0000000004f16ba0] frame B:8     Avg QP:13.75  size:    22

[libx264 @ 0000000004f16ba0] consecutive B-frames:  8.3%  0.0% 25.0% 66.7%

[libx264 @ 0000000004f16ba0] mb I  I16..4: 99.4%  0.0%  0.6%

[libx264 @ 0000000004f16ba0] 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 @ 0000000004f16ba0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0

%  0.0%  direct: 0.0%  skip:99.9%  L0:37.5% L1:62.5% BI: 0.0%

[libx264 @ 0000000004f16ba0] 8x8 transform intra:0.0% inter:0.0%

[libx264 @ 0000000004f16ba0] coded y,uvDC,uvAC intra: 0.6% 0.0% 0.0% inter: 0.0%

 0.0% 0.0%

[libx264 @ 0000000004f16ba0] i16 v,h,dc,p: 96%  0%  4%  0%

[libx264 @ 0000000004f16ba0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 29% 18% 36%  2%  2%

 3%  3%  5%  1%

[libx264 @ 0000000004f16ba0] i8c dc,h,v,p: 100%  0%  0%  0%

[libx264 @ 0000000004f16ba0] Weighted P-Frames: Y:0.0% UV:0.0%

[libx264 @ 0000000004f16ba0] ref P L0: 50.0% 50.0%

[libx264 @ 0000000004f16ba0] kb/s:18.50

1 | ... | 880 | 881 | 882 | 883 | 884 | 885 | 886 | 887 | 888 | ... | 2212

Recherche avancée

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Autres articles (89)

Publier sur MédiaSpip

Initialisation de MediaSPIP (préconfiguration)

Les formats acceptés

Sur d’autres sites (6636)

FFmpeg, timecode audio input, overlay

FFMPEG : custom sequence input images

ffmpeg : how to correctly program input framerate calculation, given desired video length duration and output framerate ?

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