[Asterisk-video] How to convert mp4save saved video

[Sergio Garcia Murillo]

That's the problem:

  Stream #0.0(eng): Audio: pcm_mulaw, 8000 Hz, *_stereo, 128 kb/s_*

 I'll check if we set it wrong to stereo or it's ffmpeg the one that's 
it's decoding it worng.

BR
Sergio

Silvio Sisto escribió:
> I was able to stream some video from x-lite to asterisk and save it 
> using the mp4save application. Codecs used were g711 and h263.
> When I tried to convert the file to other formats using ffmpeg, the 
> audio track had it's length reduced to a half. Sounds kinda like 
> squirrels talking :)
> It seems that ffmpeg thinks the original file's audio track has 128 
> kbps instead of 64 (as mp4info correctly recognizes it). I'm guessing 
> ffmpeg doesn't support g711. Upon further investigation it seems that 
> none of x-lite's codecs are supported by ffmpeg. 
> Is there a way to make asterisk convert the audio stream to anther 
> codec before mp4_save records it?
> Thanks,
> Silvio Sisto
>
> This is the content of the original (mp4save) file according to mp4info:
> ----------------------------------------------------------
> mp4info version 1.5.0.1 <http://1.5.0.1>
> test2.mp4:
> Track   Type    Info
> 1       audio   G.711 uLaw, 11.120 secs, 64 kbps, 8000 Hz
> 2       hint    Payload PCMU for track 1
> 3       video   Unknown, 10.856 secs, 0 kbps, 0x0 @ 11.33 fps
> 4       hint    Payload H263 for track 3
> mp4info: symbol lookup error: mp4info: undefined symbol: 
> MP4GetMetadataGrouping
> ----------------------------------------------------------
>
> # ffmpeg -i test2.mp4 -f flv video2.flv
> OUTPUT:
> ----------------------------------------------------------
> FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2004 Fabrice Bellard
>   configuration:  --enable-gpl --enable-pp --enable-mp3lame 
> --enable-faac --enable-faad --enable-amr_nb --enable-amr_wb 
> --enable-shared
>   libavutil version: 49.0.0
>   libavcodec version: 51.11.0
>   libavformat version: 50.5.0
>   built on Oct 10 2008 16:54:46, gcc: 4.1.2 20061115 (prerelease) 
> (Debian 4.1.1-21)
>
> Seems that stream 2 comes from film source: 1000.00 (90000/90) -> 
> 19.00 (19/1)
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'test2.mp4':
>   Duration: 00:00:11.1, start: 0.000000, bitrate: 92 kb/s
>   Stream #0.0(eng): Audio: pcm_mulaw, 8000 Hz, stereo, 128 kb/s
>   Stream #0.1(eng): Data: rtp  / 0x20707472
>   Stream #0.2(eng): Video: h263, yuv420p, 176x144, 19.00 fps(r)
>   Stream #0.3(eng): Data: rtp  / 0x20707472
> Output #0, flv, to 'video2.flv':
>   Stream #0.0: Video: flv, yuv420p, 176x144, q=2-31, 200 kb/s, 19.00 
> fps(c)
>   Stream #0.1: Audio: mp3, 8000 Hz, stereo, 64 kb/s
> Stream mapping:
>   Stream #0.2 -> #0.0
>   Stream #0.0 -> #0.1
> Press [q] to stop encoding
> [h263 @ 0xb7e00468]warning: first frame is no keyframe
> [mp3 @ 0xb7e00468]lame: output buffer too small (buffer index: 321, 
> free bytes: 1983)
> frame=  206 q=2.0 Lsize=      87kB time=5.4 bitrate= 131.4kbits/s
> video:30kB audio:42kB global headers:0kB muxing overhead 20.380929%
> ----------------------------------------------------------
>
> ------------------------------------------------------------------------
>
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