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  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • Problèmes fréquents

    10 mars 2010, par

    PHP et safe_mode activé
    Une des principales sources de problèmes relève de la configuration de PHP et notamment de l’activation du safe_mode
    La solution consiterait à soit désactiver le safe_mode soit placer le script dans un répertoire accessible par apache pour le site

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

Sur d’autres sites (11265)

  • ffmpeg mkv to mp4 container not changed

    26 août 2020, par Rio

    converting from mkv to mp4 is not working for me ffmpeg is running fine but the container is still mkv this is cmd i am running

    


    for %%i in (*.mkv) do ffmpeg -i "%%i" -c copy -c:a aac -b:a 320k -movflags +faststart "%%i.mp4"


    


    output after ffmpeg is done

    


    General
Complete name                            : C:\laragon\www\run\730428.mp4
Format                                   : Matroska
Format version                           : Version 4
Overall bit rate mode                    : Variable
Encoded date                             : UTC 2020-08-21 07:01:37
Writing application                      : mkvmerge v48.0.0 ('Fortress Around Your Heart') 64-bit
Writing library                          : libebml v1.4.0 + libmatroska v1.6.0
FileExtension_Invalid                    : mkv mk3d mka mks


    


  • Is ffmpeg broken for h.264 RTP Output ?

    13 mars 2023, par GroovyDotCom

    I used wireshark to capture the RTP stream sent with :

    


    ffmpeg -f lavfi -i "testsrc=duration=5:size=cif:rate=25" -pix_fmt yuv420p -g 25 -bf 2 -an -c:v libx264 -f rtp rtp://127.0.0.1:1234 > play.sdp

    


    ffmpeg -version
ffmpeg version git-2020-03-15-c467328 Copyright (c) 2000-2020 the FFmpeg developers

    


    As can be seen in bold, RTP timestamps go forward and backward. I expect them to be the same for every packet in the frame and then only go forward by 40ms (+3600 at 90khz clock) as per the H.264/RTP spec.

    


    Also, according to that spec, the last packet in a frame should have its marker-bit set but here almost all the packets have this bit set.

    


    Am I doing something wrong ? Not understanding something ? Or is ffmpeg support for writing H.264 RTP simply broken ?

    


    SSRC=0xA49C3DC9, Seq=3595, Time=3153114809
    
SSRC=0xA49C3DC9, Seq=3596, Time=3153114809
    
SSRC=0xA49C3DC9, Seq=3597, Time=3153114809
    
SSRC=0xA49C3DC9, Seq=3598, Time=3153114809, Mark
    
SSRC=0xA49C3DC9, Seq=3599, Time=3153125609, Mark
    
SSRC=0xA49C3DC9, Seq=3600, Time=3153118409, Mark
    
SSRC=0xA49C3DC9, Seq=3601, Time=3153122009, Mark
    
SSRC=0xA49C3DC9, Seq=3602, Time=3153136409, Mark
    
SSRC=0xA49C3DC9, Seq=3603, Time=3153129209, Mark
    
SSRC=0xA49C3DC9, Seq=3604, Time=3153132809, Mark
    
SSRC=0xA49C3DC9, Seq=3605, Time=3153147209, Mark
    
SSRC=0xA49C3DC9, Seq=3606, Time=3153140009, Mark
    
SSRC=0xA49C3DC9, Seq=3607, Time=3153143609, Mark
    
SSRC=0xA49C3DC9, Seq=3608, Time=3153158009, Mark
    
SSRC=0xA49C3DC9, Seq=3609, Time=3153150809, Mark
    
SSRC=0xA49C3DC9, Seq=3610, Time=3153154409, Mark
    
SSRC=0xA49C3DC9, Seq=3611, Time=3153168809, Mark
    
SSRC=0xA49C3DC9, Seq=3612, Time=3153161609, Mark
    
SSRC=0xA49C3DC9, Seq=3613, Time=3153165209, Mark
    
SSRC=0xA49C3DC9, Seq=3614, Time=3153179609, Mark
    
SSRC=0xA49C3DC9, Seq=3615, Time=3153172409, Mark
    
SSRC=0xA49C3DC9, Seq=3616, Time=3153176009, Mark
    
SSRC=0xA49C3DC9, Seq=3617, Time=3153190409, Mark
    
SSRC=0xA49C3DC9, Seq=3618, Time=3153183209, Mark

    


    The RTP specification, defined in RFC 3550, states that "the timestamp reflects the sampling instant of the first octet in the RTP data packet. The sampling instant must be derived from a clock that increments monotonically and linearly in time to allow synchronization and jitter calculations" (Section 5.1).

    


  • Works on FFMPEG 4, but FFMPEG 3 says emerge has unconnected output ?

    23 novembre 2020, par Karl Messner

    I'm combining an intro (.mp4/stereo) with video (.mp4/MONO) and and outdo (.mp4/stereo)

    


    ALSO, I want to add a background music. (.mp3/stereo) to the video. Adding stereo music to mono video. Then concat.

    


    It works fine on my MacOS localhost FFMPEG 4.x, but I upload to HostUpon, running FFMPEG 3.x and get this error :

    


    Filter amerge has a unconnected output

    


    I've tried a million variations of channel layout and pan configurations but the docs aren't clear enough for a newb. Any help greatly appreciated.

    


    /usr/local/bin/ffmpeg -report -i videos/intro720.mp4 -i videos/raw.mp4 -i videos/outro720.mp4 -i videos/music.mp3 -filter_complex " \
[0] scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[v0]; \
[1] scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[v1]; \
[2] scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1[v2]; \
[3:a]volume=.015[a0]; \
[1:a][a0]amerge[amix]; \
[v0][0:a:0] [v1][aMix] [v2][2:a:0] concat=n=3:v=1:a=1[v][a]" -map "[v]" -map "[a]" -f mp4 videos/out1606134367mp4 2>&1

ffmpeg started on 2020-11-23 at 07:26:07
Report written to "ffmpeg-20201123-072607.log"
ffmpeg version 3.0.2 Copyright (c) 2000-2016 the FFmpeg developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
  configuration: --enable-gpl --enable-nonfree --enable-shared --enable-libmp3lame --enable-libx264 --enable-libfdk-aac --enable-libtheora --enable-libvorbis --enable-libxvid --enable-libfreetype --enable-libvpx
  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
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'videos/intro720.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.12.100
    episode_sort    : 0
    season_number   : 0
    media_type      : 0
    hd_video        : 0
  Duration: 00:00:08.34, start: 0.023220, bitrate: 331 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 16:15 DAR 256:135], 269 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 53 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'videos/raw.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2020-11-18 19:47:11
    com.android.version: 10
    com.android.manufacturer: Google
    com.android.model: Pixel XL
  Duration: 00:01:15.98, start: 0.000000, bitrate: 17097 kb/s
    Stream #1:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, smpte170m), 1920x1080, 16997 kb/s, SAR 1:1 DAR 16:9, 29.91 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2020-11-18 19:47:11
      handler_name    : VideoHandle
    Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 95 kb/s (default)
    Metadata:
      creation_time   : 2020-11-18 19:47:11
      handler_name    : SoundHandle
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'videos/outro720.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.12.100
    episode_sort    : 0
    season_number   : 0
    media_type      : 0
    hd_video        : 0
  Duration: 00:00:09.15, start: 0.023220, bitrate: 208 kb/s
    Stream #2:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 198 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #2:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 2 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
[mp3 @ 0x10c5e40] Skipping 0 bytes of junk at 138.
[mp3 @ 0x10c5e40] Estimating duration from bitrate, this may be inaccurate
Input #3, mp3, from 'videos/music.mp3':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6mp41
    encoder         : Lavf57.19.100
  Duration: 00:01:56.69, start: 0.000000, bitrate: 192 kb/s
    Stream #3:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
Filter amerge has a unconnected output


    


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