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  • Les formats acceptés

    28 janvier 2010, par

    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 (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

Sur d’autres sites (5130)

  • FFMPEG .mov to .mp4 convertion failure

    25 mai 2016, par Pasha Rumkin

    I’m converting .mov and .mp4 to .mp4 with FFMPEG to play them on iOS and Android devices. Mp4 from Android is converting properly and playing on both devices iPhone and Android. But iPhone’s .mov result is strange. It’s playing on iPhone and Android 4. But when I’m trying to open this video with Photo app (Android 5, 6) it outputs unsupported video message.

    FFMPEG command :

    ffmpeg -i app/data/storage/68/fa/39/68fa392b-df25-4622-93ab-cf9bf1253f63 \
    
       -y -b:a 128k -ac 2 -acodec libfdk_aac -b:v 300k -vcodec libx264 \
    
       -filter:v scale=w=320:h=trunc(ow/a/2)*2 -vprofile baseline \
    
       -movflags faststart -f mp4 \
    
       app/data/storage/68/fa/39/68fa392b-df25-4622-93ab-cf9bf1253f63.mp4

    ffprobe with output file :

    ffprobe version N-80026-g936751b Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
    
  libavutil      55. 24.100 / 55. 24.100
    
  libavcodec     57. 42.100 / 57. 42.100
    
  libavformat    57. 36.100 / 57. 36.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 45.100 /  6. 45.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '68fa392b-df25-4622-93ab-cf9bf1253f63.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.36.100
    
  Duration: 00:00:00.65, start: 0.000000, bitrate: 297 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 320x568, 178 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 129 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler

  • How to call ffmpeg code without losing quality ?

    7 mai 2016, par seaguest

    I am using ffmpeg3 to convert mv.webm to mp4, it works fine when I use the command line.

    $ ffprobe mv.webm 
    
ffprobe version N-79789-g58b3e56 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: --enable-gpl --enable-shared --enable-libx264
    
  libavutil      55. 24.100 / 55. 24.100
    
  libavcodec     57. 39.100 / 57. 39.100
    
  libavformat    57. 36.100 / 57. 36.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 45.100 /  6. 45.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, matroska,webm, from 'mv.webm':
    
  Metadata:
    
    encoder         : google
    
  Duration: 00:04:56.36, start: 0.000000, bitrate: 836 kb/s
    
    Stream #0:0: Video: vp8, yuv420p, 640x480, SAR 1:1 DAR 4:3, 25 fps, 25 tbr, 1k tbn (default)
    
    Stream #0:1: Audio: vorbis, 44100 Hz, stereo, fltp (default)
    

    
$ ffmpeg -i mv.webm  -acodec aac -vcodec libx264  mv1.mp4
    
$ ffprobe mv1.mp4 
    
ffprobe version N-79789-g58b3e56 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: --enable-gpl --enable-shared --enable-libx264
    
  libavutil      55. 24.100 / 55. 24.100
    
  libavcodec     57. 39.100 / 57. 39.100
    
  libavformat    57. 36.100 / 57. 36.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 45.100 /  6. 45.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'n1.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.36.100
    
  Duration: 00:04:56.36, start: 0.000000, bitrate: 628 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 500 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 120 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler

    I play it with VLC, there is no noise at all.

    Here is my first question, in case we don’t specify the bitrate in the ffmpeg command, how are the bitrate of video/audio determined ?

    Since I am developping in Golang, I use the framework gmf which calls ffmpeg, I use go to convert the video format without specifying bitrate, then I got the following info :

    $ ffprobe mv2.mp4 
    
ffprobe version N-79789-g58b3e56 Copyright (c) 2007-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: --enable-gpl --enable-shared --enable-libx264
    
  libavutil      55. 24.100 / 55. 24.100
    
  libavcodec     57. 39.100 / 57. 39.100
    
  libavformat    57. 36.100 / 57. 36.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 45.100 /  6. 45.100
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mv2.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.36.100
    
  Duration: 00:04:56.36, start: 0.000000, bitrate: 540 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x480, 385 kb/s, 25 fps, 25 tbr, 12800 tbn (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 147 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler

    The bitrate is event better than mv1.mp4, however when I play it with VLC, I heard a lot of noises in the audio, it seems some part of the audio becomes uncontinuous.

    Here is the gmf example code that I use for the video format conversion
    transcode.go

    Here are the two files :

    mv.webm - original file
    mv2.mp4 which has a lot of noises

    I tried to increase the audio bitrate (the way we set bitrate is like AVCodecContext->bit_rate = 441000...), but this doesn’t help.

    What should I do to call ffmpeg code to make it exactly the same as command line

    ffmpeg -i mv.webm  -acodec aac -vcodec libx264  mv1.mp4

     ?

  • FFMPEG installed but not found

    20 mai 2016, par justHelloWorld

    I’m trying to install pHash , but when I execute ./configure this message is returned :

    ...
    

    
*** Configuring video Hash ***
    

    
checking whether FFmpeg is present... checking for avcodec_alloc_frame in -lavcodec... no
    
configure: error: 
    

    
*** libavcodec not found.
    
You need FFmpeg. Get it at /ffmpeg.org/>

    But FFMPEG is correctly installed, in fact executing ffmpeg it returns :

    ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.1)
    
  configuration: 
    
  libavutil      55. 17.103 / 55. 17.103
    
  libavcodec     57. 24.102 / 57. 24.102
    
  libavformat    57. 25.100 / 57. 25.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 31.100 /  6. 31.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
Hyper fast Audio and Video encoder
    
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
    

    
Use -h to get full help or, even better, run 'man ffmpeg'

    Why this happens ?

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