Does Mode 0 affect sound quality?

[terryeden]

I thought Mode 0 only changed video bit rates?


However, when I try to play a .ty file that has magically found its way onto my Xbox, I get the following error in Mplayer


Playing d:\On the Buses-.ty.
TiVo file format detected.
VIDEO: MPEG2 720x576 (aspect 2) 25.000 fps 5800.0 kbps (725.0 kbyte/s)
============================================================ ==============
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
MPlayer interrupted by signal 11 in module: init_audio_codec
- MPlayer crashed by bad usage of CPU/FPU/RAM.


It doesn't seem to be a problem with camp 1970's classic "On the Buses". And, when I play using the -no sound option, the video plays through fine.

When watching on the TiVo, there's no appreciable change in sound quality...

Am I doing something very wrong?

[mike0151]

Mode 0 has no effect on sound. However, IIRC the sound is recorded on TiVo at 32KHz rather than the expected higher rate. This may be your problem.

HTH
Mike

[terryeden]

Mode 0 has no effect on sound. However, IIRC the sound is recorded on TiVo at 32KHz rather than the expected higher rate. This may be your problem.

HTH
Mike

How very odd... All my other non-mode-0 recordings work fine...

According to this chap http://paulwehr.com/blog/index.php?title=mplayer_and_tivo_stream&more=1&c=1&tb=1&pb=1
the problem lies in Mplayer; specifically in http://mplayerhq.hu/cgi-bin/cvsweb.cgi/main/libmpdemux/demux_ty.c.diff?r1=1.4&r2=1.5

I suppose it must be coincidence that the Mode 0 recording don't work...

[mike0151]

If Mplayer on the Xbox is anything like Windows Media Player then it generally doesn't handle TiVo stuff very well. Interestingly I recently downloaded VLC (www.videolan.org) for Windows and it plays native TY files beautifully. Dunno if that helps at all.

Mike