[Live-devel] Mpeg Audio missing or corrupted in MPEG-2 Transport Stream or seperate sreams

Eric Pheatt eric.pheatt at gmail.com
Sun Dec 16 15:44:00 PST 2007


On Dec 16, 2007 3:08 PM, Ross Finlayson <finlayson at live555.com> wrote:
> >I'm using wisremote as a channel changing script for wis-streamer so
> >that I can record tv using MythTV's Freebox rtsp recorder. While I get
> >the video just fine the audio appears to be missing.
> >
> >I'm wondering if anyone else can confirm that the following command
> >should work.
> >
> >wis-streamer -i 2 -c ntsc-cable:57 -t ntsc -p 8554 -w 720 -h 480
> >-mpeg2 -r 1500000 -mpegaudio 192 -mpegtransport 192 -D "Streaming
> >COMEDYP"
>
> If you use "-mpegtransport <audio-bitrate-in-kbps>", then that
> specifies both the video codec (MPEG-2) and the audio codec (MPEG-2),
> so you should *not* also use "-mpeg2" or "-mpegaudio".

Ok tried that and still no audio.

>
> >VLC reports that there is an audio stream in addition to the video,
> >but I no matter how high I crank the volume I can't hear anything. If
> >I don't use the mpegtransport option and use pcm for the audio instead
> >of mpegaudio so that I have separate streams I can hear the audio just
> >fine in VLC
>
> What happens if you specify "-mpegaudio 192" and "-mpeg2" *instead*
> of "-mpegtransport 192"?

This produces no audio.

> What happens if you specify "-mpegaudio 192" *only* (and not "-mpeg2"
> or "-mpegtransport 192")?

This produces no audio and but the video is the default mpeg4 with default rate.

next steps?


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