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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
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    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (13871)

  • Preserving or syncing audio of original video to video fragments

    2 mai 2015, par Code_Ed_Student

    I currently have a few videos that I want to split into EXACTLY 30 seconds segments. I have been able to accomplish but the audio is not being properly preserve. Its out of sync. I tried playing arsample ab and other libraries but I am not getting the desired outuput. What would be the best way to both split the videos in exactly 30 second frames and preserve the audio ?

    ffmpeg -i $file -preset medium -map 0 -segment_time 30 -g 225 -r 25  -sc_threshold 0 -force_key_frames expr:gte(t,n_forced*30) -f segment -movflags faststart -vf scale=-1:720,format=yuv420p -vcodec libx264 -crf 20 -codec:a copy $dir/$video_file-%03d.mp4

    short snippet of output

    Input #0, flv, from '/media/sf_linux_sandbox/hashtag_pull/video-downloads/5b64d7ab-a669-4016-b55e-fe4720cbd843/5b64d7ab-a669-4016-b55e-fe4720cbd843.flv':
    
  Metadata:
    
    moovPosition    : 40
    
    avcprofile      : 77
    
    avclevel        : 31
    
    aacaot          : 2
    
    videoframerate  : 30
    
    audiochannels   : 2
    
    ©too           : Lavf56.15.102
    
    length          : 7334912
    
    sampletype      : mp4a
    
    timescale       : 48000
    
  Duration: 00:02:32.84, start: 0.000000, bitrate: 2690 kb/s
    
    Stream #0:0: Video: h264 (Main), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 30.30 fps, 29.97 tbr, 1k tbn, 59.94 tbc
    
    Stream #0:1: Audio: aac (LC), 48000 Hz, stereo, fltp
    
[libx264 @ 0x3663ba0] using SAR=1/1
    
[libx264 @ 0x3663ba0] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64
    
[libx264 @ 0x3663ba0] profile High, level 3.1
    
[libx264 @ 0x3663ba0] 264 - core 144 r2 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=3 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=225 keyint_min=22 scenecut=0 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=20.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, segment, to '/media/sf_linux_sandbox/hashtag_pull/video-edits/30/5b64d7ab-a669-4016-b55e-fe4720cbd843/5b64d7ab-a669-4016-b55e-fe4720cbd843-%03d.mp4':
    
  Metadata:
    
    moovPosition    : 40
    
    avcprofile      : 77
    
    avclevel        : 31
    
    aacaot          : 2
    
    videoframerate  : 30
    
    audiochannels   : 2
    
    ©too           : Lavf56.15.102
    
    length          : 7334912
    
    sampletype      : mp4a
    
    timescale       : 48000
    
    encoder         : Lavf56.16.102
    
    Stream #0:0: Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc
    
    Metadata:
    
      encoder         : Lavc56.19.100 libx264
    
    Stream #0:1: Audio: aac, 48000 Hz, stereo
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (copy)

  • error : av_interleaved_write_frame() : Unknown error

    12 avril 2014, par John Qualis

    I am new to ffmpeg. I am trying to stream my webcam using ffmpeg (x264 encoding) on a windows machine to ffserver on a linux server and restream it. I am getting the following error : av_interleaved_write_frame() : Unknown error
    I checked about it on the net and came across mails which said it could be related to version mismatch between ffmpeg and ffserver. I made sure that all libraries that are used by ffmpeg and ffserver have the same version. I am still getting this error. Appreciate any help in solving this issue.

    I am using the following command :

     .\ffmpeg.exe -f dshow -i video="Webcam C170":audio="Microphone (3- Webcam C170)" -an -g 94 -vcodec libx264 -b:v 512k -r 30 -f flv http://AA.BB.CC.DD:8090/feed1.ffm

    I get the followoing errors -

      [dshow @ 0003f240] real-time buffer 101% full! frame dropped!
    
    Last message repeated 1 times
    
No pixel format specified, yuv422p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    
[libx264 @ 02563520] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 02563520] profile High 4:2:2, level 3.0, 4:2:2 8-bit
    
[libx264 @ 02563520] 264 - core 140 r2377 1ca7bb9 - H.264/MPEG-4 AVC codec - Copyleft
    
 2003-2013 - 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 chro
    
ma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 thre
    
ads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compa
    
t=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 o
    
pen_gop=0 weightp=2 keyint=94 keyint_min=9 scenecut=40 intra_refresh=0 rc_lookahead=4
    
0 rc=abr mbtree=1 bitrate=512 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_rat
    
io=1.40 aq=1:1.00
    
Output #0, flv, to 'http://184.173.147.99:8090/feed1.ffm':
    
  Metadata:
    
    encoder         : Lavf55.22.100
    
    Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv422p, 640x480, q=-
    
1--1, 512 kb/s, 1k tbn, 30 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo -> libx264)
    
Press [q] to stop, [?] for help
    
frame=   59 fps=9.0 q=28.0 size=       3kB time=00:00:00.46 bitrate=  58.6kbits/s
    
av_interleaved_write_frame(): Unknown error
    

    
In my /etc/ffserver.conf I have the following settings -
    

    
<feed>
    

    
File /tmp/feed1.ffm
    
##File /mnt/vmtmpfs/feed1.ffm
    
FileMaxSize 50M
    

    
ACL allow 127.0.0.1
    
ACL allow 0.0.0.0 255.255.255.255
    

    
</feed>
    

    
<stream>
    
        Format flv
    
        Feed feed1.ffm
    

    
        VideoCodec libx264
    
        VideoFrameRate 30
    
        VideoBitRate 512
    
        VideoSize 320x240
    
        AVOptionVideo crf 23
    
        AVOptionVideo preset medium
    
        # for more info on crf/preset options, type: x264 --help
    
        AVOptionVideo flags +global_header
    
        # NoAudio
    

    
        AudioCodec aac
    
        Strict -2
    
        AudioBitRate 128
    
        AudioChannels 2
    
        AudioSampleRate 44100
    
        AVOptionAudio flags +global_header
    
        ACL ALLOW 0.0.0.0 255.255.255.255
    
</stream>

  • ffmpeg converting .mkv to .264

    7 novembre 2017, par V. Panchenko

    I want to convert .mkv to .264.
    I try to do it using ffmpeg :

    ffmpeg -i input.mkv -vcodec copy -acodec copy output.264

    It works without errors, but when I try to play output.264 using ffplay :

    ffplay -f h264 -i output.264

    ffplay response is :

    ffplay version N-75924-gd25c033 Copyright (c) 2003-2015 the FFmpeg developers
    
  built with gcc 5.2.0 (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-zlib
    
  libavutil      55.  3.100 / 55.  3.100
    
  libavcodec     57.  5.100 / 57.  5.100
    
  libavformat    57.  3.100 / 57.  3.100
    
  libavdevice    57.  0.100 / 57.  0.100
    
  libavfilter     6. 11.100 /  6. 11.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.100 /  2.  0.100
    
  libpostproc    54.  0.100 / 54.  0.100
    
[h264 @ 03972220] sps_id 24 out of rangeq=    0KB sq=    0B f=0/0
    
[h264 @ 03972220] missing picture in access unit with size 12836207
    
[h264 @ 03972220] data partitioning is not implemented. Update your FFmpeg versi
    
on to the newest one from Git. If the problem still occurs, it means that your f
    
ile has a feature which has not been implemented.
    
[h264 @ 03972220] If you want to help, upload a sample of this file to ftp://upl
    
oad.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-deve
    
l@ffmpeg.org)
    
[h264 @ 03972220] data partitioning is not implemented. Update your FFmpeg versi
    
on to the newest one from Git. If the problem still occurs, it means that your f
    
ile has a feature which has not been implemented.
    
[h264 @ 03972220] If you want to help, upload a sample of this file to ftp://upl
    
oad.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-deve
    
l@ffmpeg.org)
    
[h264 @ 03972220] sps_id 24 out of range
    
[h264 @ 03972220] data partitioning is not implemented. Update your FFmpeg versi
    
on to the newest one from Git. If the problem still occurs, it means that your f
    
ile has a feature which has not been implemented.
    
[h264 @ 03972220] If you want to help, upload a sample of this file to ftp://upl
    
oad.ffmpeg.org/incoming/ and contact the ffmpeg-devel mailing list. (ffmpeg-deve
    
l@ffmpeg.org)
    
[h264 @ 03972220] no frame!
    
[h264 @ 039696e0] Stream #0: not enough frames to estimate rate; consider increa
    
sing probesize
    
[h264 @ 039696e0] decoding for stream 0 failed
    
[h264 @ 039696e0] Could not find codec parameters for stream 0 (Video: h264, non
    
e): unspecified size
    
Consider increasing the value for the 'analyzeduration' and 'probesize' options
    
Contagion.264: could not find codec parameters

    How I can fix it and convert .mkv to .264 correctly ?

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