[mythtv-users] On Suse9: playback has instant slowdown and audio jitter

[William]

I always thought standard playback was at 29.95fps not 19.99 but what do I
know :)

> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org 
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of 
> steve.myth at hiblue.com
> Sent: Thursday, March 25, 2004 6:29 PM
> To: mythtv-users at mythtv.org
> Subject: [mythtv-users] On Suse9: playback has instant 
> slowdown and audio jitter
> 
> 
> Before i start, let me just say ' I think i've tried 
> everything.' Really. I've spent 2 weeks on this problem and 
> rebuilt every thing from QT to 
> Nvidia drivers. And still....
> 
> ...I cant play back videos via mythvideo. The  playback slows 
> down as soon as 
> I play it. After 5 seconds the audio becomes choppy. When I 
> say 'slows down' 
> I really mean s-l-o-w-i-n-g d-o-w-n audio and video. (divx5 
> with mp3 and AC3 
> soundtracks alike - have not tried other formats now I come 
> to think of it.)
> 
> Note i cant test mythTV TV playback at the moment as my TV 
> card broke. Just 
> using Mythvideo as a playback device right now.
> 
> I have Suse 9.0 on a Shuttle SS51 with Geforece4 ti4200, 4363 
> drivers (i've 
> tried default and latest too), onboard sound and modified QT3 
> as built by 
> '~oeysteio' (Thanks - your packages saved me a lot of hassle 
> re-building QT3) Xine works fine and xmms works well via oss 
> and alsa. ARTS is turned off.
> 
> I've now added a soundblaster live (some others noted a 
> difference after 
> disgarding on-board sound) and it made no difference.
> 
> I've search the forums up and don but cant find anyone with 
> the same problem. 
> 
> --verbose playback  gives this. (note the regular 19.99 fps 
> which to me sounds 
> like something is deliberately slowing down to 20 fps.) CPU 
> util is 10%.
> 
> 2004-03-26 00:15:35 Registering Internal as a media playback 
> plugin. 2004-03-26 00:15:35 Registering MythMusic Media 
> Handler as a media handler 2004-03-26 00:15:49 Estimated 
> bitrate = 128000 Input #0, avi, from 
> '/home/steve/mnt/Video/TV/Horizon on Thu, Mar 11 2004 
> recomp.avi':
>   Stream #0.0: Video: mpeg4, 448x336, 25.00 fps
>   Stream #0.1: Audio: mp3, 44100 Hz, stereo, 128 kb/s 
> 2004-03-26 00:15:50 Opening OSS audio device '/dev/dsp1'. 
> 2004-03-26 00:15:50 Over/underscan. V: 0, H: 0, XOff: 0, 
> YOff: 0 2004-03-26 00:15:50 Using XV port 105 2004-03-26 
> 00:15:50 Changing from None to WatchingPreRecorded 2004-03-26 
> 00:15:50 Video timing method: nVidia polling 2004-03-26 
> 00:15:50 Refresh rate: 16665, frame interval: 40000 
> 2004-03-26 00:15:50 waiting for prebuffer... [mpeg4 @ 
> 0x82c4e78]frame skip 8 'video_output' mean = '50021.37', std. 
> dev. = '71.00', fps = '19.99'
> avsync_avg: -284, warpfactor: 0.938301, warpfactor_avg: 
> 0.9412 'video_output' mean = '50028.62', std. dev. = '97.35', 
> fps = '19.99'
> avsync_avg: -929, warpfactor: 0.9, warpfactor_avg: 0.94103 
> 'video_output' mean = '50029.54', std. dev. = '61.38', fps = '19.99'
> avsync_avg: -1218, warpfactor: 0.9, warpfactor_avg: 0.940756 
> 'video_output' mean = '50029.57', std. dev. = '126.27', fps = '19.99'
> avsync_avg: -1194, warpfactor: 0.9, warpfactor_avg: 0.940486 
> 'video_output' mean = '50029.36', std. dev. = '171.63', fps = '19.99'
> 
> 
> Has anyone got any ideas where I should look next? Am I being 
> totally stupid - 
> is there a config file which might say 'local fps - 20' or similar?
> 
> Any pointers gratefuly received.
> 
> Steve.
> 
>