[mythtv-users] Mythvideo 720p MKV playback audio stutter

[Nate Carlson]

On Wed, 23 Apr 2008, Nate Carlson wrote:
>
> I'm trying to get AC3 passthrough working using Myth's 'internal' player 
> with mythvideo, on 720p mkv's.  If I play the files with mplayer and the 
> ac3 passthrough options, it works great. However, if I play the same 
> files with the internal player, the video is perfect, but for the audio, 
> it maybe plays a half second for every 5 seconds or so. CPU usage is 
> ~30%. (This is on an E8400 with 4gb memory.)
>

Turns out the two streams I had it on have subtitles encoded in the file, 
and if I let it play for awhile dump errors like:

2008-04-23 23:48:08.422 NVP: 1200 progressive frames seen.
'video_output' mean = '41706.59', std. dev. = '50.46', fps = '23.98'
2008-04-23 23:48:09.506 AFD: No codec for stream index 3, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:10.507 AFD: No codec for stream index 3, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:10.507 AFD: No codec for stream index 2, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:10.591 AFD: No codec for stream index 4, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:10.591 AFD: No codec for stream index 5, type(Subtitle) 
id(Unknown Codec ID:94210)
'video_output' mean = '41706.59', std. dev. = '51.63', fps = '23.98'
2008-04-23 23:48:16.054 AFD: No codec for stream index 2, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:16.055 AFD: No codec for stream index 4, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:16.221 AFD: No codec for stream index 3, type(Subtitle) 
id(Unknown Codec ID:94210)
2008-04-23 23:48:16.221 AFD: No codec for stream index 5, type(Subtitle) 
id(Unknown Codec ID:94210)

mkv's without subtitles work great.

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| nate carlson | natecars at natecarlson.com | http://www.natecarlson.com |
|       depriving some poor village of its idiot since 1981            |
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