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  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • ANNEXE : Les plugins utilisés spécifiquement pour la ferme

    5 mars 2010, par

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Sur d’autres sites (11989)

  • movenc : Check for errors from mov_create_chapter_track

    26 août 2013, par Martin Storsjö
    movenc : Check for errors from mov_create_chapter_track

    On failures in the write_trailer function, we could also ignore
    
the errors and try to finish the file despite these errors (which
    
would only leave an incomplete chapters track). It’s probably better
    
to signal the error clearly to the caller though (and if this
    
function failed there’s no guarantee that there’s enough memory to
    
finish the trailer either).
    

    Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavformat/movenc.c

  • Using youtube-dl and ffmpeg (or vlc) to transcode a YouTube live stream to rtsp rtmp udp rtp

    11 septembre 2018, par Matthew Wachter

    I’m trying to use youtube-dl to transcode the YouTube NASA ISS live stream (or any YouTube stream) to rtmp or rtsp. I think I have the right command but for some reason I can’t get anything to connect to my newly transcoded stream.

    Here’s the command I’m using :

    youtube-dl -f best "https://youtu.be/RtU_mdL2vBM" -o - | ffmpeg -re -f mp4 -i pipe:0 -ar 44100 -f flv rtmp://localhost:1935/test/test'

    The command appears to work and I see information about the stream files opening from YouTube but when I use the command below, vlc reports that it is unable to connect to the stream.

    vlc rtmp://localhost:1935/test/test

    If I use this next command the stream plays correctly in vlc and I can see that the youtube-dl part is functioning.

    youtube-dl -o - "https://youtu.be/RtU_mdL2vBM" | vlc -

    or simply just

    vlc -vvv https://youtu.be/RtU_mdL2vBM

    So it seems that ffmpeg is the issue or maybe I need a streaming server between the transcode and my desired destination (vlc or TouchDesigner). I’ve also tried using vlc in place of ffmpeg/youtube-dl :

    vlc -vvv https://youtu.be/RtU_mdL2vBM --sout '#transcode{vcodec=h264,vb=800,acodec=none}:rtp{sdp=rtsp://:554/test}'

    or

    youtube-dl -o - "https://youtu.be/RtU_mdL2vBM" | vlc - --sout '#transcode{vcodec=h264,vb=800,acodec=none}:rtp{sdp=rtsp://:554/test}'

    and view with

    vlc rtsp://localhost:554/test

    Unfortunately I haven’t been able make either of those methods work. I can’t even see the stream in vlc if I try to duplicate it like this :

    vlc -vvv https://youtu.be/RtU_mdL2vBM --sout '#duplicate{dst=display,dst="#transcode{vcodec=h264,vb=800,acodec=none}:rtp{,sdp=rtsp://:554/test}"}'

    Any advice would be greatly appreciated. Thanks !

    EDIT
    Here’s the ffmpeg log as requested. The program continues to run without error so I interrupted it after a about a minute.

    ffmpeg version N-91805-g7bb90a9449 Copyright (c) 2000-2018 the FFmpeg developers
    

    

    
built with gcc 8.2.1 (GCC) 20180813
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
  libavutil      56. 19.100 / 56. 19.100
    
  libavcodec     58. 27.101 / 58. 27.101
    
  libavformat    58. 18.100 / 58. 18.100
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 26.100 /  7. 26.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
  libpostproc    55.  2.100 / 55.  2.100
    
[youtube] RtU_mdL2vBM: Downloading webpage
    
[youtube] RtU_mdL2vBM: Downloading video info webpage
    
[youtube] RtU_mdL2vBM: Downloading m3u8 information
    
[youtube] RtU_mdL2vBM: Downloading MPD manifest
    
[youtube] RtU_mdL2vBM: Downloading MPD manifest
    
[download] Destination: -
    
ffmpeg version N-91805-g7bb90a9449 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 8.2.1 (GCC) 20180813
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
  libavutil      56. 19.100 / 56. 19.100
    
  libavcodec     58. 27.101 / 58. 27.101
    
  libavformat    58. 18.100 / 58. 18.100
    
  libavdevice    58.  4.101 / 58.  4.101
    
  libavfilter     7. 26.100 /  7. 26.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
  libpostproc    55.  2.100 / 55.  2.100
    
[hls,applehttp @ 0000025043b5b8c0] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083785/goap/clen%3D82062%3Blmt%3D1536264500502461/govp/clen%3D1207415%3Blmt%3D1536264500502461/dur/5.000/file/seg.ts' for reading
    
[hls,applehttp @ 0000025043b5b8c0] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083786/goap/clen%3D82114%3Blmt%3D1536264505368820/govp/clen%3D921521%3Blmt%3D1536264505368820/dur/5.000/file/seg.ts' for reading
    
Input #0, hls,applehttp, from 'https://manifest.googlevideo.com/api/manifest/hls_playlist/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/dover/11/playlist_duration/30/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8':
    
  Duration: N/A, start: 77339.207089, bitrate: N/A
    
  Program 0
    
    Metadata:
    
      variant_bitrate : 0
    
    Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
    
    Metadata:
    
      variant_bitrate : 0
    
    Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 90k tbn, 120 tbc
    
    Metadata:
    
      variant_bitrate : 0
    
Output #0, mpegts, to 'pipe:':
    
  Metadata:
    
    encoder         : Lavf58.18.100
    
    Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 60 fps, 60 tbr, 90k tbn, 90k tbc
    
    Metadata:
    
      variant_bitrate : 0
    
    Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
    
    Metadata:
    
      variant_bitrate : 0
    
Stream mapping:
    
  Stream #0:1 -> #0:0 (copy)
    
  Stream #0:0 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[https @ 00000250440f9400] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083787/goap/clen%3D82559%3Blmt%3D1536264513336444/govp/clen%3D1159272%3Blmt%3D1536264513336444/dur/5.000/file/seg.ts' for reading
    
[https @ 00000250440f9400] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083788/goap/clen%3D82284%3Blmt%3D1536264515970806/govp/clen%3D806499%3Blmt%3D1536264515970806/dur/5.000/file/seg.ts' for reading
    
[https @ 00000250442e6580] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083789/goap/clen%3D86065%3Blmt%3D1536264520896201/govp/clen%3D858826%3Blmt%3D1536264520896201/dur/5.250/file/seg.ts' for reading
    
[https @ 0000025044549a80] Opening 'https://manifest.googlevideo.com/api/manifest/hls_playlist/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/dover/11/playlist_duration/30/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8' for reading
    
    Last message repeated 1 times
    
[https @ 00000250442e6580] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083790/goap/clen%3D84751%3Blmt%3D1536264525099796/govp/clen%3D1149917%3Blmt%3D1536264525099796/dur/5.168/file/seg.ts' for reading
    
[https @ 0000025044549a80] Opening 'https://manifest.googlevideo.com/api/manifest/hls_playlist/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/dover/11/playlist_duration/30/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8' for reading
    
[https @ 00000250442e6580] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083791/goap/clen%3D86308%3Blmt%3D1536264531550269/govp/clen%3D1347646%3Blmt%3D1536264531550269/dur/5.250/file/seg.ts' for reading
    
[https @ 0000025044549a80] Opening 'https://manifest.googlevideo.com/api/manifest/hls_playlist/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/dover/11/playlist_duration/30/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8' for reading
    
[https @ 00000250442e6580] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083792/goap/clen%3D63862%3Blmt%3D1536264536697249/govp/clen%3D1011009%3Blmt%3D1536264536697249/dur/3.835/file/seg.ts' for reading
    
[https @ 0000025044549a80] Opening 'https://manifest.googlevideo.com/api/manifest/hls_playlist/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/dover/11/playlist_duration/30/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8' for reading
    
[https @ 00000250442e6580] Opening 'https://r1---sn-a5meknsd.googlevideo.com/videoplayback/id/RtU_mdL2vBM.2/itag/301/source/yt_live_broadcast/requiressl/yes/ratebypass/yes/live/1/cmbypass/yes/goi/160/sgoap/gir%3Dyes%3Bitag%3D140/sgovp/gir%3Dyes%3Bitag%3D299/hls_chunk_host/r1---sn-a5meknsd.googlevideo.com/playlist_type/DVR/gcr/us/ei/LImRW8WTKNbCkgaX_oXQBQ/initcwndbps/11730/mm/32/mn/sn-a5meknsd/ms/lv/mv/m/pl/20/manifest_duration/30/keepalive/yes/mt/1536264380/disable_polymer/true/ip/76.81.240.50/ipbits/0/expire/1536286092/sparams/ip,ipbits,expire,id,itag,source,requiressl,ratebypass,live,cmbypass,goi,sgoap,sgovp,hls_chunk_host,playlist_type,gcr,ei,initcwndbps,mm,mn,ms,mv,pl/signature/0D92427B34C835DDD58D1ABFA8D1E131151867C1.359F90D7EB3E1E31A3BF19320022B95DF24E959E/key/dg_yt0/playlist/index.m3u8/sq/7083793/goap/clen%3D82043%3Blmt%3D1536264538567230/govp/clen%3D1385870%3Blmt%3D1536264538567230/dur/4.999/file/seg.ts' for reading
    
Error writing trailer of pipe:: Immediate exit requested.52 bitrate=2034.6kbits/s speed=1.41x
    
frame= 2670 fps= 86 q=-1.0 Lsize=   11385kB time=00:00:44.49 bitrate=2095.9kbits/s speed=1.44x
    
video:9580kB audio:695kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 10.808865%
    
Exiting normally, received signal 2.
    
[ffmpeg] Interrupted by user
    
[download] 100% in 00:32
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 000002c5ceebaa40] moov atom not found
    
pipe:0: Invalid data found when processing input
    
Exiting normally, received signal 2.

  • FFMPEG RTSP Server using muxing doc example

    11 novembre 2018, par Harshil Makwana

    I am trying to develop RTSP server using FFMPEG. For that I slightly modified muxing file located at doc/example/ folder inside FFMPEG repository.

    Giving my source code of RTSP server example :

    #include 
    
#include 
    
#include 
    
#include 
    

    
#include <libavutil></libavutil>avassert.h>
    
#include <libavutil></libavutil>channel_layout.h>
    
#include <libavutil></libavutil>opt.h>
    
#include <libavutil></libavutil>mathematics.h>
    
#include <libavutil></libavutil>timestamp.h>
    
#include <libavformat></libavformat>avformat.h>
    
#include <libswscale></libswscale>swscale.h>
    
#include <libswresample></libswresample>swresample.h>
    

    
#define STREAM_DURATION   10.0
    
#define STREAM_FRAME_RATE 25 /* 25 images/s */
    
#define STREAM_PIX_FMT    AV_PIX_FMT_YUV420P /* default pix_fmt */
    

    
#define SCALE_FLAGS SWS_BICUBIC
    

    
// a wrapper around a single output AVStream
    
typedef struct OutputStream {
    
    AVStream *st;
    
    AVCodecContext *enc;
    

    
    /* pts of the next frame that will be generated */
    
    int64_t next_pts;
    
    int samples_count;
    

    
    AVFrame *frame;
    
    AVFrame *tmp_frame;
    

    
    float t, tincr, tincr2;
    

    
    struct SwsContext *sws_ctx;
    
    struct SwrContext *swr_ctx;
    
} OutputStream;
    

    
static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt)
    
{
    
    AVRational *time_base = &amp;fmt_ctx->streams[pkt->stream_index]->time_base;
    

    
    printf("pts:%s pts_time:%s dts:%s dts_time:%s duration:%s duration_time:%s stream_index:%d\n",
    
           av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, time_base),
    
           av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, time_base),
    
           av_ts2str(pkt->duration), av_ts2timestr(pkt->duration, time_base),
    
           pkt->stream_index);
    
}
    

    
static int write_frame(AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
    
{
    
    /* rescale output packet timestamp values from codec to stream timebase */
    
    av_packet_rescale_ts(pkt, *time_base, st->time_base);
    
    pkt->stream_index = st->index;
    

    
    /* Write the compressed frame to the media file. */
    
    log_packet(fmt_ctx, pkt);
    
    return av_interleaved_write_frame(fmt_ctx, pkt);
    
}
    

    
/* Add an output stream. */
    
static void add_stream(OutputStream *ost, AVFormatContext *oc,
    
                       AVCodec **codec,
    
                       enum AVCodecID codec_id)
    
{
    
    AVCodecContext *c;
    
    int i;
    

    
    /* find the encoder */
    
    *codec = avcodec_find_encoder(codec_id);
    
    if (!(*codec)) {
    
        fprintf(stderr, "Could not find encoder for '%s'\n",
    
                avcodec_get_name(codec_id));
    
        exit(1);
    
    }
    

    
    ost->st = avformat_new_stream(oc, NULL);
    
    if (!ost->st) {
    
        fprintf(stderr, "Could not allocate stream\n");
    
        exit(1);
    
    }
    
    ost->st->id = oc->nb_streams-1;
    
    c = avcodec_alloc_context3(*codec);
    
    if (!c) {
    
        fprintf(stderr, "Could not alloc an encoding context\n");
    
        exit(1);
    
    }
    
    ost->enc = c;
    

    
    switch ((*codec)->type) {
    
    case AVMEDIA_TYPE_AUDIO:
    
        c->sample_fmt  = (*codec)->sample_fmts ?
    
            (*codec)->sample_fmts[0] : AV_SAMPLE_FMT_FLTP;
    
        c->bit_rate    = 64000;
    
        c->sample_rate = 44100;
    
        if ((*codec)->supported_samplerates) {
    
            c->sample_rate = (*codec)->supported_samplerates[0];
    
            for (i = 0; (*codec)->supported_samplerates[i]; i++) {
    
                if ((*codec)->supported_samplerates[i] == 44100)
    
                    c->sample_rate = 44100;
    
            }
    
        }
    
        c->channels        = av_get_channel_layout_nb_channels(c->channel_layout);
    
        c->channel_layout = AV_CH_LAYOUT_STEREO;
    
        if ((*codec)->channel_layouts) {
    
            c->channel_layout = (*codec)->channel_layouts[0];
    
            for (i = 0; (*codec)->channel_layouts[i]; i++) {
    
                if ((*codec)->channel_layouts[i] == AV_CH_LAYOUT_STEREO)
    
                    c->channel_layout = AV_CH_LAYOUT_STEREO;
    
            }
    
        }
    
        c->channels        = av_get_channel_layout_nb_channels(c->channel_layout);
    
        ost->st->time_base = (AVRational){ 1, c->sample_rate };
    
        break;
    

    
    case AVMEDIA_TYPE_VIDEO:
    
        c->codec_id = codec_id;
    

    
        c->bit_rate = 400000;
    
        /* Resolution must be a multiple of two. */
    
        c->width    = 352;
    
        c->height   = 288;
    
        /* timebase: This is the fundamental unit of time (in seconds) in terms
    
         * of which frame timestamps are represented. For fixed-fps content,
    
         * timebase should be 1/framerate and timestamp increments should be
    
         * identical to 1. */
    
        ost->st->time_base = (AVRational){ 1, STREAM_FRAME_RATE };
    
        c->time_base       = ost->st->time_base;
    

    
        c->gop_size      = 12; /* emit one intra frame every twelve frames at most */
    
        c->pix_fmt       = STREAM_PIX_FMT;
    
        if (c->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
    
            /* just for testing, we also add B-frames */
    
            c->max_b_frames = 2;
    
        }
    
        if (c->codec_id == AV_CODEC_ID_MPEG1VIDEO) {
    
            /* Needed to avoid using macroblocks in which some coeffs overflow.
    
             * This does not happen with normal video, it just happens here as
    
             * the motion of the chroma plane does not match the luma plane. */
    
            c->mb_decision = 2;
    
        }
    
   break;
    

    
    default:
    
        break;
    
    }
    

    
    /* Some formats want stream headers to be separate. */
    
    if (oc->oformat->flags &amp; AVFMT_GLOBALHEADER)
    
        c->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
    
}
    

    
/**************************************************************/
    
/* audio output */
    

    
static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
    
                                  uint64_t channel_layout,
    
                                  int sample_rate, int nb_samples)
    
{
    
    AVFrame *frame = av_frame_alloc();
    
    int ret;
    

    
    if (!frame) {
    
        fprintf(stderr, "Error allocating an audio frame\n");
    
        exit(1);
    
    }
    

    
    frame->format = sample_fmt;
    
    frame->channel_layout = channel_layout;
    
    frame->sample_rate = sample_rate;
    
    frame->nb_samples = nb_samples;
    

    
    if (nb_samples) {
    
        ret = av_frame_get_buffer(frame, 0);
    
        if (ret &lt; 0) {
    
            fprintf(stderr, "Error allocating an audio buffer\n");
    
            exit(1);
    
        }
    
    }
    

    
    return frame;
    
}
    

    
static void open_audio(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
    
{
    
    AVCodecContext *c;
    
    int nb_samples;
    
    int ret;
    
   AVDictionary *opt = NULL;
    

    
    c = ost->enc;
    

    
    /* open it */
    
    av_dict_copy(&amp;opt, opt_arg, 0);
    
    ret = avcodec_open2(c, codec, &amp;opt);
    
    av_dict_free(&amp;opt);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Could not open audio codec: %s\n", av_err2str(ret));
    
        exit(1);
    
    }
    

    
    /* init signal generator */
    
    ost->t     = 0;
    
    ost->tincr = 2 * M_PI * 110.0 / c->sample_rate;
    
    /* increment frequency by 110 Hz per second */
    
    ost->tincr2 = 2 * M_PI * 110.0 / c->sample_rate / c->sample_rate;
    

    
    if (c->codec->capabilities &amp; AV_CODEC_CAP_VARIABLE_FRAME_SIZE)
    
        nb_samples = 10000;
    
    else
    
        nb_samples = c->frame_size;
    

    
    ost->frame     = alloc_audio_frame(c->sample_fmt, c->channel_layout,
    
                                       c->sample_rate, nb_samples);
    
    ost->tmp_frame = alloc_audio_frame(AV_SAMPLE_FMT_S16, c->channel_layout,
    
                                       c->sample_rate, nb_samples);
    

    
    /* copy the stream parameters to the muxer */
    
    ret = avcodec_parameters_from_context(ost->st->codecpar, c);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Could not copy the stream parameters\n");
    
        exit(1);
    
    }
    

    
    /* create resampler context */
    
        ost->swr_ctx = swr_alloc();
    
        if (!ost->swr_ctx) {
    
            fprintf(stderr, "Could not allocate resampler context\n");
    
            exit(1);
    
        }
    

    
        /* set options */
    
        av_opt_set_int       (ost->swr_ctx, "in_channel_count",   c->channels,       0);
    
        av_opt_set_int       (ost->swr_ctx, "in_sample_rate",     c->sample_rate,    0);
    
        av_opt_set_sample_fmt(ost->swr_ctx, "in_sample_fmt",      AV_SAMPLE_FMT_S16, 0);
    
        av_opt_set_int       (ost->swr_ctx, "out_channel_count",  c->channels,       0);
    
        av_opt_set_int       (ost->swr_ctx, "out_sample_rate",    c->sample_rate,    0);
    
        av_opt_set_sample_fmt(ost->swr_ctx, "out_sample_fmt",     c->sample_fmt,     0);
    

    
        /* initialize the resampling context */
    
        if ((ret = swr_init(ost->swr_ctx)) &lt; 0) {
    
            fprintf(stderr, "Failed to initialize the resampling context\n");
    
            exit(1);
    
        }
    
}
    

    
/* Prepare a 16 bit dummy audio frame of 'frame_size' samples and
    
 * 'nb_channels' channels. */
    
static AVFrame *get_audio_frame(OutputStream *ost)
    
{
    
    AVFrame *frame = ost->tmp_frame;
    
    int j, i, v;
    
    int16_t *q = (int16_t*)frame->data[0];
    

    
    /* check if we want to generate more frames */
    
    if (av_compare_ts(ost->next_pts, ost->enc->time_base,
    
                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
    
        return NULL;
    

    
    for (j = 0; j nb_samples; j++) {
    
        v = (int)(sin(ost->t) * 10000);
    
        for (i = 0; i &lt; ost->enc->channels; i++)
    
            *q++ = v;
    
        ost->t     += ost->tincr;
    
        ost->tincr += ost->tincr2;
    
    }
    

    
    frame->pts = ost->next_pts;
    
    ost->next_pts  += frame->nb_samples;
    

    
    return frame;
    
}
    

    
/*
    
 * encode one audio frame and send it to the muxer
    
 * return 1 when encoding is finished, 0 otherwise
    
 */
    
static int write_audio_frame(AVFormatContext *oc, OutputStream *ost)
    
{
    
    AVCodecContext *c;
    
    AVPacket pkt = { 0 }; // data and size must be 0;
    
    AVFrame *frame;
    
    int ret;
    
    int got_packet;
    
    int dst_nb_samples;
    

    
    av_init_packet(&amp;pkt);
    
    c = ost->enc;
    

    
    frame = get_audio_frame(ost);
    

    
    if (frame) {
    
        /* convert samples from native format to destination codec format, using the resampler */
    
            /* compute destination number of samples */
    
            dst_nb_samples = av_rescale_rnd(swr_get_delay(ost->swr_ctx, c->sample_rate) + frame->nb_samples,
    
                                            c->sample_rate, c->sample_rate, AV_ROUND_UP);
    
            av_assert0(dst_nb_samples == frame->nb_samples);
    

    
        /* when we pass a frame to the encoder, it may keep a reference to it
    
         * internally;
    
        * make sure we do not overwrite it here
    
         */
    
        ret = av_frame_make_writable(ost->frame);
    
        if (ret &lt; 0)
    
            exit(1);
    

    
        /* convert to destination format */
    
        ret = swr_convert(ost->swr_ctx,
    
                          ost->frame->data, dst_nb_samples,
    
                          (const uint8_t **)frame->data, frame->nb_samples);
    
        if (ret &lt; 0) {
    
            fprintf(stderr, "Error while converting\n");
    
            exit(1);
    
        }
    
        frame = ost->frame;
    

    
        frame->pts = av_rescale_q(ost->samples_count, (AVRational){1, c->sample_rate}, c->time_base);
    
        ost->samples_count += dst_nb_samples;
    
    }
    

    
    ret = avcodec_encode_audio2(c, &amp;pkt, frame, &amp;got_packet);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Error encoding audio frame: %s\n", av_err2str(ret));
    
        exit(1);
    
    }
    

    
    if (got_packet) {
    
        ret = write_frame(oc, &amp;c->time_base, ost->st, &amp;pkt);
    
        if (ret &lt; 0) {
    
            fprintf(stderr, "Error while writing audio frame: %s\n",
    
                    av_err2str(ret));
    
            exit(1);
    
        }
    
    }
    

    
    return (frame || got_packet) ? 0 : 1;
    
}
    

    
/**************************************************************/
    
/* video output */
    

    
static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
    
{
    
    AVFrame *picture;
    
    int ret;
    

    
    picture = av_frame_alloc();
    
    if (!picture)
    
        return NULL;
    

    
    picture->format = pix_fmt;
    
    picture->width  = width;
    
    picture->height = height;
    

    
    /* allocate the buffers for the frame data */
    
    ret = av_frame_get_buffer(picture, 32);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Could not allocate frame data.\n");
    
        exit(1);
    
    }
    

    
    return picture;
    
}
    

    
static void open_video(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
    
{
    
    int ret;
    
    AVCodecContext *c = ost->enc;
    
    AVDictionary *opt = NULL;
    

    
    av_dict_copy(&amp;opt, opt_arg, 0);
    

    
    /* open the codec */
    
    ret = avcodec_open2(c, codec, &amp;opt);
    
    av_dict_free(&amp;opt);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Could not open video codec: %s\n", av_err2str(ret));
    
        exit(1);
    
    }
    

    
    /* allocate and init a re-usable frame */
    
    ost->frame = alloc_picture(c->pix_fmt, c->width, c->height);
    
    if (!ost->frame) {
    
        fprintf(stderr, "Could not allocate video frame\n");
    
        exit(1);
    
    }
    

    
    /* If the output format is not YUV420P, then a temporary YUV420P
    
     * picture is needed too. It is then converted to the required
    
     * output format. */
    
    ost->tmp_frame = NULL;
    
    if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
    
        ost->tmp_frame = alloc_picture(AV_PIX_FMT_YUV420P, c->width, c->height);
    
        if (!ost->tmp_frame) {
    
            fprintf(stderr, "Could not allocate temporary picture\n");
    
            exit(1);
    
        }
    
    }
    

    
    /* copy the stream parameters to the muxer */
    
    ret = avcodec_parameters_from_context(ost->st->codecpar, c);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Could not copy the stream parameters\n");
    
        exit(1);
    
    }
    
}
    

    
/* Prepare a dummy image. */
    
static void fill_yuv_image(AVFrame *pict, int frame_index,
    
                           int width, int height)
    
{
    
    int x, y, i;
    

    
    i = frame_index;
    

    
    /* Y */
    
    for (y = 0; y &lt; height; y++)
    
        for (x = 0; x &lt; width; x++)
    
            pict->data[0][y * pict->linesize[0] + x] = x + y + i * 3;
    

    
    /* Cb and Cr */
    
    for (y = 0; y &lt; height / 2; y++) {
    
        for (x = 0; x &lt; width / 2; x++) {
    
            pict->data[1][y * pict->linesize[1] + x] = 128 + y + i * 2;
    
            pict->data[2][y * pict->linesize[2] + x] = 64 + x + i * 5;
    
        }
    
    }
    
}
    

    
static AVFrame *get_video_frame(OutputStream *ost)
    
{
    
    AVCodecContext *c = ost->enc;
    

    
    /* check if we want to generate more frames */
    
    if (av_compare_ts(ost->next_pts, c->time_base,
    
                      STREAM_DURATION, (AVRational){ 1, 1 }) >= 0)
    
        return NULL;
    

    
    /* when we pass a frame to the encoder, it may keep a reference to it
    
     * internally; make sure we do not overwrite it here */
    
    if (av_frame_make_writable(ost->frame) &lt; 0)
    
        exit(1);
    

    
    if (c->pix_fmt != AV_PIX_FMT_YUV420P) {
    
        /* as we only generate a YUV420P picture, we must convert it
    
         * to the codec pixel format if needed */
    
        if (!ost->sws_ctx) {
    
            ost->sws_ctx = sws_getContext(c->width, c->height,
    
                                          AV_PIX_FMT_YUV420P,
    
                                          c->width, c->height,
    
                                          c->pix_fmt,
    
                                          SCALE_FLAGS, NULL, NULL, NULL);
    
            if (!ost->sws_ctx) {
    
                fprintf(stderr,
    
                        "Could not initialize the conversion context\n");
    
                exit(1);
    
            }
    
        }
    
        fill_yuv_image(ost->tmp_frame, ost->next_pts, c->width, c->height);
    
        sws_scale(ost->sws_ctx,
    
                  (const uint8_t * const *)ost->tmp_frame->data, ost->tmp_frame->linesize,
    
                  0, c->height, ost->frame->data, ost->frame->linesize);
    
    } else {
    
        fill_yuv_image(ost->frame, ost->next_pts, c->width, c->height);
    
    }
    

    
    ost->frame->pts = ost->next_pts++;
    

    
    return ost->frame;
    
}
    

    
/*
    
 * encode one video frame and send it to the muxer
    
 * return 1 when encoding is finished, 0 otherwise
    
 */
    
static int write_video_frame(AVFormatContext *oc, OutputStream *ost)
    
{
    
    int ret;
    
    AVCodecContext *c;
    
    AVFrame *frame;
    
    int got_packet = 0;
    
    AVPacket pkt = { 0 };
    

    
    c = ost->enc;
    

    
    frame = get_video_frame(ost);
    

    
    av_init_packet(&amp;pkt);
    

    
    /* encode the image */
    
    ret = avcodec_encode_video2(c, &amp;pkt, frame, &amp;got_packet);
    
    if (ret &lt; 0) {
    
      fprintf(stderr, "Error encoding video frame: %s\n", av_err2str(ret));
    
        exit(1);
    
    }
    

    
    if (got_packet) {
    
        ret = write_frame(oc, &amp;c->time_base, ost->st, &amp;pkt);
    
    } else {
    
        ret = 0;
    
    }
    

    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Error while writing video frame: %s\n", av_err2str(ret));
    
        exit(1);
    
    }
    

    
    return (frame || got_packet) ? 0 : 1;
    
}
    

    
static void close_stream(AVFormatContext *oc, OutputStream *ost)
    
{
    
    avcodec_free_context(&amp;ost->enc);
    
    av_frame_free(&amp;ost->frame);
    
    av_frame_free(&amp;ost->tmp_frame);
    
    sws_freeContext(ost->sws_ctx);
    
    swr_free(&amp;ost->swr_ctx);
    
}
    

    
/**************************************************************/
    
/* media file output */
    

    
int main(int argc, char **argv)
    
{
    
    OutputStream video_st = { 0 }, audio_st = { 0 };
    
    const char *filename;
    
    AVOutputFormat *fmt;
    
    AVFormatContext *oc;
    
    AVCodec *audio_codec, *video_codec;
    
    int ret;
    
    int have_video = 0, have_audio = 0;
    
    int encode_video = 0, encode_audio = 0;
    
    AVDictionary *opt = NULL;
    
    int i;
    

    
    /* Initialize libavcodec, and register all codecs and formats. */
    
    av_register_all();
    
    avformat_network_init();
    
    if (argc &lt; 2) {
    
        printf("usage: %s output_file\n"
    
               "API example program to output a media file with libavformat.\n"
    
               "This program generates a synthetic audio and video stream, encodes and\n"
    
               "muxes them into a file named output_file.\n"
    
               "The output format is automatically guessed according to the file extension.\n"
    
               "Raw images can also be output by using '%%d' in the filename.\n"
    
               "\n", argv[0]);
    
        return 1;
    
    }
    

    
    filename = argv[1];
    
    for (i = 2; i+1 &lt; argc; i+=2) {
    
        if (!strcmp(argv[i], "-flags") || !strcmp(argv[i], "-fflags"))
    
            av_dict_set(&amp;opt, argv[i]+1, argv[i+1], 0);
    
    }
    
   /* allocate the output media context */
    
    avformat_alloc_output_context2(&amp;oc, NULL, "rtsp", filename);
    
    if (!oc) {
    
        printf("Could not deduce output format from file extension: using MPEG.\n");
    
        avformat_alloc_output_context2(&amp;oc, NULL, "mpeg", filename);
    
    }
    
    if (!oc)
    
        return 1;
    

    
    fmt = oc->oformat;
    

    
    /* Add the audio and video streams using the default format codecs
    
     * and initialize the codecs. */
    
    if (fmt->video_codec != AV_CODEC_ID_NONE) {
    
        add_stream(&amp;video_st, oc, &amp;video_codec, fmt->video_codec);
    
        have_video = 1;
    
        encode_video = 1;
    
    }
    
    if (fmt->audio_codec != AV_CODEC_ID_NONE) {
    
        add_stream(&amp;audio_st, oc, &amp;audio_codec, fmt->audio_codec);
    
        have_audio = 1;
    
        encode_audio = 1;
    
    }
    

    
    /* Now that all the parameters are set, we can open the audio and
    
     * video codecs and allocate the necessary encode buffers. */
    
    if (have_video)
    
        open_video(oc, video_codec, &amp;video_st, opt);
    

    
    if (have_audio)
    
        open_audio(oc, audio_codec, &amp;audio_st, opt);
    

    
    av_dump_format(oc, 0, filename, 1);
    

    
    /* open the output file, if needed */
    
    if (!(fmt->flags &amp; AVFMT_NOFILE)) {
    
        ret = avio_open(&amp;oc->pb, filename, AVIO_FLAG_WRITE);
    
        if (ret &lt; 0) {
    
            fprintf(stderr, "Could not open '%s': %s\n", filename,
    
                    av_err2str(ret));
    
            return 1;
    
        }
    
    }
    

    
    /* Write the stream header, if any. */
    
    ret = avformat_write_header(oc, &amp;opt);
    
    if (ret &lt; 0) {
    
        fprintf(stderr, "Error occurred when opening output file: %s\n",
    
                av_err2str(ret));
    
        return 1;
    
    }
    

    
    while (encode_video || encode_audio) {
    
        /* select the stream to encode */
    
        if (encode_video &amp;&amp;
    
           (!encode_audio || av_compare_ts(video_st.next_pts, video_st.enc->time_base,
    
                                            audio_st.next_pts, audio_st.enc->time_base) &lt;= 0)) {
    
            encode_video = !write_video_frame(oc, &amp;video_st);
    
        } else {
    
            encode_audio = !write_audio_frame(oc, &amp;audio_st);
    
        }
    
    }
    

    
    /* Write the trailer, if any. The trailer must be written before you
    
     * close the CodecContexts open when you wrote the header; otherwise
    
     * av_write_trailer() may try to use memory that was freed on
    
     * av_codec_close(). */
    
    av_write_trailer(oc);
    

    
    /* Close each codec. */
    
    if (have_video)
    
        close_stream(oc, &amp;video_st);
    
    if (have_audio)
    
        close_stream(oc, &amp;audio_st);
    

    
    if (!(fmt->flags &amp; AVFMT_NOFILE))
    
        /* Close the output file. */
    
        avio_closep(&amp;oc->pb);
    

    
    /* free the stream */
    
    avformat_free_context(oc);
    

    
    return 0;
    
}

    After compiling it, I am running binary :

    $ ./muxing rtsp://127.0.0.1/test
    
Output #0, rtsp, to 'rtsp://127.0.0.1/test':
    
    Stream #0:0: Video: mpeg4, yuv420p, 352x288, q=2-31, 400 kb/s, 25 tbn
    
    Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 64 kb/s
    
[tcp @ 0x2b9d220] Connection to tcp://127.0.0.1:554?timeout=0 failed: Connection refused
    
Error occurred when opening output file: Connection refused

    But getting Connection refused error,

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