[FFmpeg-user] How to capture an RTMP stream

[DopeLabs]

rune:~ dopelabs$ ffmpeg -i "rtmp://cp258849.live.edgefcs.net/live/SonLife0616@327662" -c copy -f mp4 test.mp4
ffmpeg version N-66156-gb76d6eb Copyright (c) 2000-2014 the FFmpeg developers
  built on Sep  7 2014 07:54:06 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
  configuration:
  libavutil      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.100 / 56.  4.100
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
[flv @ 0x7f8fcb01a000] Stream discovered after head already parsed
Input #0, flv, from 'rtmp://cp258849.live.edgefcs.net/live/SonLife0616@327662':
  Metadata:
    copyright       : ''
    author          : ''
    description     : ''
    keywords        : ''
    rating          : ''
    title           : 'SonLife'
    presetname      : 'Custom'
    creationdate    : '21/07/2015 11:21:13 GMT-5'
    videodevice     : 'SDI Capture Card'
    videoframerate  : 30
    avclevel        : 31.00
    avcprofile      : 88.00
    videokey        : 50.00
    videoonly       : 0
    audioonly       : 0
    audiodevice     : 'SDI Capture Card'
    audioinputvolume: 50.00
    encoder         : 'C21 Live Encoder'
  Duration: 00:00:00.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: h264 (Main), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2048 kb/s, 30.33 fps, 30 tbr, 1k tbn, 60 tbc
    Stream #0:1: Audio: aac, 48000 Hz, stereo, fltp, 93 kb/s
    Stream #0:2: Data: none
Output #0, mp4, to 'test.mp4':
  Metadata:
    copyright       : ''
    author          : ''
    description     : ''
    keywords        : ''
    rating          : ''
    title           : 'SonLife'
    presetname      : 'Custom'
    creationdate    : '21/07/2015 11:21:13 GMT-5'
    videodevice     : 'SDI Capture Card'
    videoframerate  : 30
    avclevel        : 31.00
    avcprofile      : 88.00
    videokey        : 50.00
    videoonly       : 0
    audioonly       : 0
    audiodevice     : 'SDI Capture Card'
    audioinputvolume: 50.00
    encoder         : Lavf56.4.100
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 2048 kb/s, 30.33 fps, 16k tbn, 1k tbc
    Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 93 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=  404 fps= 53 q=-1.0 Lsize=    3454kB time=00:00:10.68 bitrate=2648.0kbits/s
video:3317kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.360223%

rune:~ dopelabs$ ffprobe test.mp4
ffprobe version N-66156-gb76d6eb Copyright (c) 2007-2014 the FFmpeg developers
  built on Sep  7 2014 07:54:06 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
  configuration:
  libavutil      54.  7.100 / 54.  7.100
  libavcodec     56.  1.100 / 56.  1.100
  libavformat    56.  4.100 / 56.  4.100
  libavdevice    56.  0.100 / 56.  0.100
  libavfilter     5.  1.100 /  5.  1.100
  libswscale      3.  0.100 /  3.  0.100
  libswresample   1.  1.100 /  1.  1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : 'SonLife'
    encoder         : Lavf56.4.100
    copyright       : ''
    description     : ''
  Duration: 00:00:10.70, start: 0.000000, bitrate: 2644 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 2539 kb/s, 37.76 fps, 30 tbr, 16k tbn, 60 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 95 kb/s (default)
    Metadata:
      handler_name    : SoundHandler



> On Jul 25, 2015, at 1:34 AM, Moritz Barsnick <barsnick at gmx.net> wrote:
> 
> On Fri, Jul 24, 2015 at 18:09:13 -0600, Deron wrote:
>> Closing connection: NetStream.Play.StreamNotFound
>> rtmp://cp258849.live.edgefcs.net/live/SonLife0616@327662: Unknown error occurred
> 
> Interesting, because mplayer too can dump it just fine:
> $ mplayer -v -dumpstream -dumpfile test.flv rtmp://cp258849.live.edgefcs.net/live/SonLife0616@327662
> (Audio and video of the dump are out of sync though.)
> 
> I personally don't see why this shouldn't work with ffmpeg. *shrug*
> 
> Moritz
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