Hi, For ages now, and persisting using the latest nightlies, I have been getting audio sync problems when using the skip ahead functions, either using the 30-sec or the 1% skips, consistently at certain places in recordings.
This is playing from a MythTV backend, using the MythTV protocol, where the recordings are mpeg2 files straight from a Hauppage 500/150 setup. I don't get these sync problems using the MythTV frontend. Typically I'll hit the 30 sec skip, it will pause (buffering?), then jump ahead, playing the audio at the new point but still playing the video at the point I jumped from, after about 3 seconds the video will pixelate then jump forward to the new position, but since the audio has already been playing for 3 seconds, it remains about 3 seconds out of sync, never catching up. It appears to happen consistently when I jump at certain places (eg the start of an advertisement, so that every time I hit skip forward at that place the same issue happens). This makes me, and I admit to knowing little about this, think that it is perhaps 'key frame' related? FWIW I often watch long recordings (3+ hours), but I think it happens on short ones too. The only way to work around this is to look up the video time code, stop the video and restart it using the number buttons to jump to vaguely the right spot, then use the 1% skip buttons to try to get to the spot I was and then make sure not to skip at that point again. Not fun. Do others experience this? I can try to isolate a file/time-code where it consistently happens if that would help with debugging. Could it be bitrate related? I'm on a 100 mbit wired ethernet, but don't have any probs using mythtv frontend over 11g. I'm happy to change the recording settings on the myth backend to something that is 'most compatible' with the mvpmc, if that makes sense/would help. I think I just used the defaults, but in any case I'm recording 480x480 4:3 MPEG2-PS with bit rates: 4500 avg/6000 max with audio using the MPEG-2 Hardware Encoder with a sampling rate of 48000 Layer II 384 kbps (at 90% volume). I don't do any transcoding on these files. Thanks, James ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Mvpmc-users mailing list Mvpmc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mvpmc-users mvpmc wiki: http://mvpmc.wikispaces.com/
