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Autres articles (33)
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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 (3684)
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avformat/framecrcenc : Make side-data checksums endian-independent
6 décembre 2020, par Andreas Rheinhardtavformat/framecrcenc : Make side-data checksums endian-independent
Do this by converting big-endian side data to little endian for
checksumming.Reviewed-by : Andriy Gelman <andriy.gelman@gmail.com>
Reviewed-by : Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com> -
combine different encoding movie into one [duplicate]
21 décembre 2017, par HunneThis question already has an answer here :
We are trying to combine/concat different movie episodes into
one but when sometimes the video is with different encoding at that time
FFMPEG command throws an error so I would like you please help me in
this that if we modify the FFMPEG command and it combine different
encoding movie into one> /bin/ffmpeg \
-f lavfi -i color=c=black \
-ss 0.000 -t 16.545 \
-i "/var/customers/webs/dilip/motions4/upload/public/userfiles/input/fb10209949081578900/1509686278_59fbfc06d394b.mp4" \
-ss 0.000 -t 32.038 \
-i "/var/customers/webs/dilip/motions4/upload/public/userfiles/tmp/fb881023855388222/1509704918_59fc44d6ac51b.mp4" \
-ss 16.545 -t 20.386 \
-i "/var/customers/webs/dilip/motions4/upload/public/userfiles/input/fb10209949081578900/1509686278_59fbfc06d394b.mp4" \
-i "/var/customers/webs/dilip/motions4/upload/public/userfiles/input/fb10209949081578900/1509685957_59fbfac5113ff.png" \
-i "/var/customers/webs/dilip/motions4/upload/public/userfiles/public/1509691135_59fc0effd94c8.mp3" \
-f lavfi -i color=c=black:s=854x480:r=25:d=3 \
-f lavfi -i color=c=black:s=854x480:r=25:d=3 \
-filter_complex " \
[1:v]fps=fps=25[1_fps]; \
[1_fps]scale=853:480:force_original_aspect_ratio=increase[1_fps_tmpsize]; \
[1_fps_tmpsize]pad=854:480:x=0.5:y=0:color=black[1_scaled]; \
[2:v]fps=fps=25[2_fps]; \
[2_fps]scale=640:480:force_original_aspect_ratio=increase[2_fps_tmpsize]; \
[2_fps_tmpsize]pad=854:480:x=107:y=0:color=black[2_scaled]; \
[3:v]fps=fps=25[3_fps]; \
[3_fps]scale=853:480:force_original_aspect_ratio=increase[3_fps_tmpsize]; \
[3_fps_tmpsize]pad=854:480:x=0.5:y=0:color=black[3_scaled]; \
[2_scaled][1_scaled]scale2ref[scaled_2_scaled][1_scaled]; \
[3_scaled][1_scaled]scale2ref[scaled_3_scaled][1_scaled]; \
[1_scaled][scaled_2_scaled][scaled_3_scaled]concat=n=3:v=1:a=0[video_out]; \
[video_out]drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/libel-suit-rg.ttf' \
:x=w-tw-25:y=25:fontsize=32:text='www.omegaitech.com':fontcolor=white[video_out_watermarked]; \
[4:v]scale=100:100[scalled_logo]; [video_out_watermarked][scalled_logo]overlay=10:10 [video_out_watermarked]; \
[5:a]adelay=300|300|300|300|300|300|300|300[audio_out]; \
[6]setsar=1[a]; \
[a]drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/libel-suit-rg.ttf' \
:x=(w-text_w)/2:y=(h-text_h-line_h)/2:fontsize=32:text='Intro text':fontcolor=white[a]; \
[7]setsar=1[c]; \
[c]drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/libel-suit-rg.ttf':x=(w-text_w)/2:y=(h)/2-(line_h*2):fontsize=32:text='Created By':fontcolor=white,drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/libel-suit-rg.ttf':x=(w-text_w)/2:y=(h)/2-(line_h)+10:fontsize=32:text='Dilip Gorasia (omegaitech@yahoo.com)':fontcolor=white,drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/libel-suit-rg.ttf':x=(w-text_w)/2:y=(h)/2+20:fontsize=32:text='Modified By':fontcolor=white,drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/libel-suit-rg.ttf':x=(w-text_w)/2:y=(h)/2+(line_h)+20:fontsize=32:text='Raj Patel (rinpate@gmail.com)':fontcolor=white[c]; \
[video_out_watermarked]setsar=1[b]; \
[a][b][c]concat=n=3:v=1:a=0[video_out_watermarked]; \
[video_out_watermarked]drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/arial.ttf' \
:x=100:y=100:fontsize=32:text='Raj Patel':fontcolor=white:enable='between(t,0,13.37)'[video_out_watermarked]; \
[video_out_watermarked]drawtext=fontfile='/var/customers/webs/dilip/motions4/upload/public/assets/fonts/arial.ttf' \
:x=200:y=200:fontsize=32:text='Raj Patel':fontcolor=white:enable='between(t,13.37,38.78)'[video_out_watermarked] \
" \
-map "[video_out_watermarked]" -map "[audio_out]" \
-s 854x480 \
-aspect 1.779167 \
-r 25 \
-c:v libx264 -b:v 800k -bufsize 64k -crf 24 -movflags faststart -q:v 0 -q:a 0 -c:a aac -strict experimental -b:a 128k -f mp4 -threads 2 -shortest \
-t 74.969 -async 1 \
-y "/var/customers/webs/dilip/motions4/upload/public/userfiles/output/fb881023855388222/1509704929_59fc44e122d41.mp4"
ffmpeg version N-87770-g1954e62 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.9.2 (Debian 4.9.2-10)
configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --bindir=/root/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
libavutil 55. 77.101 / 55. 77.101
libavcodec 57.106.104 / 57.106.104
libavformat 57. 82.104 / 57. 82.104
libavdevice 57. 9.102 / 57. 9.102
libavfilter 6.106.101 / 6.106.101
libswscale 4. 7.103 / 4. 7.103
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
Input #0, lavfi, from 'color=c=black':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/var/customers/webs/dilip/motions4/upload/public/userfiles/input/fb10209949081578900/1509686278_59fbfc06d394b.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2016-09-07T03:10:56.000000Z
Duration: 00:04:06.76, start: 0.000000, bitrate: 2324 kb/s
Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2194 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2016-09-07T03:10:56.000000Z
handler_name : ISO Media file produced by Google Inc.
Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
creation_time : 2016-09-07T03:10:56.000000Z
handler_name : ISO Media file produced by Google Inc.
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '/var/customers/webs/dilip/motions4/upload/public/userfiles/tmp/fb881023855388222/1509704918_59fc44d6ac51b.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.36.100
comment : 1361809051215868
Duration: 00:00:32.38, start: 0.000000, bitrate: 310 kb/s
Stream #2:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 182 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #2:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 122 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '/var/customers/webs/dilip/motions4/upload/public/userfiles/input/fb10209949081578900/1509686278_59fbfc06d394b.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2016-09-07T03:10:56.000000Z
Duration: 00:04:06.76, start: 0.000000, bitrate: 2324 kb/s
Stream #3:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2194 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
Metadata:
creation_time : 2016-09-07T03:10:56.000000Z
handler_name : ISO Media file produced by Google Inc.
Stream #3:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
Metadata:
creation_time : 2016-09-07T03:10:56.000000Z
handler_name : ISO Media file produced by Google Inc.
Input #4, png_pipe, from '/var/customers/webs/dilip/motions4/upload/public/userfiles/input/fb10209949081578900/1509685957_59fbfac5113ff.png':
Duration: N/A, bitrate: N/A
Stream #4:0: Video: png, rgba(pc), 128x128, 25 tbr, 25 tbn, 25 tbc
Input #5, mp3, from '/var/customers/webs/dilip/motions4/upload/public/userfiles/public/1509691135_59fc0effd94c8.mp3':
Metadata:
TOAL : www.Songs.PK
TRSN : www.Songs.PK
TPE4 : www.Songs.PK
encoded_by : Eac * Lame
EpisodeID : www.Songs.PK
comment : www.Songs.PK
lyrics-eng : www.Songs.PK
title : Zor Ka Jhatka - www.Songs.PK
track : 1
TGID : www.Songs.PK
TIT1 : www.Songs.PK
TIT3 : www.Songs.PK
copyright : www.Songs.PK
performer : www.Songs.PK
publisher : www.Songs.PK
genre : Bollywood Music
album : Action Replayy
album_artist : www.Songs.PK
composer : www.Songs.PK
TEXT : www.Songs.PK
TOLY : www.Songs.PK
TOPE : Music: Pritam | Lyrics: Irshad Kamil
artist : Daler Mehndi, Richa Sharma
TDES : www.Songs.PK
TCAT : www.Songs.PK
date : 2010
Duration: 00:04:10.17, start: 0.025056, bitrate: 164 kb/s
Stream #5:0: Audio: mp3, 44100 Hz, stereo, s16p, 158 kb/s
Metadata:
encoder : LAME3.98r
Stream #5:1: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 900x803 [SAR 300:300 DAR 900:803], 90k tbr, 90k tbn, 90k tbc
Metadata:
comment : Cover (front)
Input #6, lavfi, from 'color=c=black:s=854x480:r=25:d=3':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #6:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 854x480 [SAR 1:1 DAR 427:240], 25 tbr, 25 tbn, 25 tbc
Input #7, lavfi, from 'color=c=black:s=854x480:r=25:d=3':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #7:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 854x480 [SAR 1:1 DAR 427:240], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #1:0 (h264) -fps
Stream #2:0 (h264) -fps
Stream #3:0 (h264) -fps
Stream #4:0 (png) -scale
Stream #5:0 (mp3) -adelay
Stream #6:0 (rawvideo) -setsar
Stream #7:0 (rawvideo) -setsar
drawtext -Stream #0:0 (libx264)
adelay -Stream #0:1 (aac)
Press [q] to stop, [?] for help
-async is forwarded to lavfi similarly to -af aresample=async=1:min_hard_comp=0.100000:first_pts=0.
[Parsed_concat_11 @ 0x340f840] Input link in1:v0 parameters (size 854x480, SAR 1:1) do not match the corresponding output link in0:v0 parameters (854x480, SAR 2560:2559)
[Parsed_concat_11 @ 0x340f840] Failed to configure output pad on Parsed_concat_11
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #7:0
Conversion failed!`enter code here`Thx for your help
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Creating a video from data of server-side script
8 mars 2016, par Peter LeupoldMy plan is to display the data that a server-side script generates in a video displayable on my web page. So far my approach is the following :
- A three dimensional integer array in a C script is use to accumulate the image data. Dimensions are width, breadth and color (R, G and B).
- The array is written to a ppm-file.
- The next picture is accumulated and written and so on.
- With ffmpeg a script merges the ppm-files to a mp4-video.
Basically this works, but of course faster would be nicer. I would appreciate proposals for fundamentally different approaches as well as help on the following details :
- Is there a file format simple as ppm that uses the HEX code for colors instead of triplets ? This would reduce the size of my array as well a the number of write operations.
- Do I loose much time if I print every single value to the file with an fprintf operation instead of accumulating lines into a string ? Or do compilers optimize this kind of sequences of writes ?
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