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• why ffmpeg can't understand a=rtcp in sdp file

  27 décembre 2016, par yhzs

  I need to transcoding rtp stream to rtmp stream meanwhile i need to define the client’s rtcp port.But it seem’s that it dosen’t work. I hope someone can help me.
  I used command

  ffmpeg -i a.sdp  -vcodec flv -f flv rtmp://server:ip

  sdp message as follow :

  v=0
  
  o=- 0 0 IN IP4 127.0.0.1
  
  s=No Name
  
  c=IN IP4 10.1.120.254
  
  t=0 0
  
  a=tool:libavformat 57.57.100
  
  m=video 8080 RTP/AVP 96
  
  b=AS:3227
  
  a=rtcp:8089
  
  a=rtpmap:96 H264/90000
  
  a=fmtp:96 packetization-mode=1; sprop-parameter-sets=Z0LgKdoBQB5puAgIMBAAAA==,aM48gA==; profile-level-id=42E029

• How to convert any type of video in mp4

  23 décembre 2016, par Ankit Aneja

  I’m using meteor with blaze for development of web-app. I have used html 5 video tag for play video in browser. other types like mp4 and m4v is working fine in all browser but MOV format file is not play in any browser.

  So I think to convert MOV to mp4 before upload.

  Anyone have any idea about convert video before upload using js or meteor. OR any other way we can play MOV type video in any browser

• FFMPEG avi to streaming mp4

  29 mai 2013, par Vprnl

  I'm trying to get ffmpeg to encode various AVI files to mp4 for streaming purposes but my inexperience with the subject matter is making me doubt I'll ever get this to work.

  I use this commandline :

  ffmpeg -i test.avi -vcodec libx264 -r 24 -ac 2 -acodec ac3 -ab 128k -bt 240k -preset    fast -strict -2 -b:v 320K -bufsize 62000 -maxrate 62000 -movflags frag_keyframe+empty_moov test.mp4

  I use the " -movflags frag_keyframe+empty_moov" to make it possible to serve a fragmented mp4

  And this is the log I get :

      file conversion error ffmpeg version N-53577-gced0307 Copyright (c) 2000-2013 the FFmpeg developers
  
        built on May 28 2013 12:21:54 with gcc 4.7.3 (GCC)
  
        configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0
  
      r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libil
  
      bc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus -
  
      -enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc
  
       --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
        libavutil      52. 34.100 / 52. 34.100
  
        libavcodec     55. 12.100 / 55. 12.100
  
        libavformat    55.  7.100 / 55.  7.100
  
        libavdevice    55.  1.101 / 55.  1.101
  
        libavfilter     3. 72.100 /  3. 72.100
  
        libswscale      2.  3.100 /  2.  3.100
  
        libswresample   0. 17.102 /  0. 17.102
  
        libpostproc    52.  3.100 / 52.  3.100
  
      [avi @ 002ce8c0] non-interleaved AVI
  
      Input #0, avi, from 'C:/temp/test.avi':
  
        Metadata:
  
          encoder         : MEncoder Sherpya-MT-SVN-r31027-4.2.5
  
        Duration: 01:15:15.47, start: 0.000000, bitrate: 4798 kb/s
  
          Stream #0:0: Video: mpeg4 (Simple Profile) (XVID / 0x44495658), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 23.98 tb
  
      n, 24k tbc
  
          Stream #0:1: Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, 5.1(side), fltp, 640 kb/s
  
      [libx264 @ 03c57020] max bitrate less than average bitrate, assuming CBR
  
      [libx264 @ 03c57020] using SAR=1/1
  
      [libx264 @ 03c57020] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
  
      [libx264 @ 03c57020] profile High, level 3.1
  
      [libx264 @ 03c57020] 264 - core 133 r2334 a3ac64b - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - op
  
      tions: cabac=1 ref=2 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=6 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 interlace
  
      d=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=1 keyint=250 keyi
  
      nt_min=24 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=cbr mbtree=1 bitrate=320 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_m
  
      axrate=320 vbv_bufsize=62 nal_hrd=none ip_ratio=1.40 aq=1:1.00
  
      Output #0, mp4, to 'pipe:1':
  
        Metadata:
  
          encoder         : Lavf55.7.100
  
          Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 320 kb/s, 12288 tbn, 24
  
      tbc
  
          Stream #0:1: Audio: ac3 ([165][0][0][0] / 0x00A5), 48000 Hz, stereo, fltp, 128 kb/s
  
      Stream mapping:
  
        Stream #0:0 -> #0:0 (mpeg4 -> libx264)
  
        Stream #0:1 -> #0:1 (ac3 -> ac3)
  
      Press [q] to stop, [?] for help
  
      frame=   37 fps=0.0 q=0.0 size=       1kB time=00:00:01.97 bitrate=   4.7kbits/s
  
      frame=   41 fps= 36 q=27.0 size=       1kB time=00:00:01.97 bitrate=   4.7kbits/s
  
      frame=   51 fps= 31 q=22.0 size=       1kB time=00:00:02.49 bitrate=   3.7kbits/s
  
      frame=   63 fps= 27 q=21.0 size=       1kB time=00:00:02.97 bitrate=   3.1kbits/s
  
      frame=   82 fps= 29 q=21.0 size=       1kB time=00:00:03.48 bitrate=   2.7kbits/s
  
      frame=   91 fps= 26 q=21.0 size=       1kB time=00:00:03.99 bitrate=   2.3kbits/s
  
      frame=  101 fps= 25 q=23.0 size=       1kB time=00:00:04.47 bitrate=   2.1kbits/s
  
      frame=  114 fps= 25 q=21.0 size=       1kB time=00:00:04.98 bitrate=   1.9kbits/s
  
      frame=  128 fps= 25 q=26.0 size=       1kB time=00:00:05.46 bitrate=   1.7kbits/s
  
      frame=  135 fps= 24 q=38.0 size=       1kB time=00:00:05.97 bitrate=   1.6kbits/s
  
      frame=  141 fps= 23 q=45.0 size=       1kB time=00:00:05.97 bitrate=   1.6kbits/s

  I hope someone can point me in the right direction. The goal is to serve the file to a html5 player. But sadly that has not yet worked.
  Thanks !

  [EDIT]

  Sorry if I'm being unclear. I have two issues. First FFMPEG gives me an error (as you can see in the log) but I'm uncertain why I get this error and secondly, the stream does not actually work. The tanscoding starts, but the player never receives the video