2009-05-12, 05:29 PM
I'd like for this thread to be an education on the issues behind lip sync problems. My old analog card never had lip sync issues, but QAM with my HVR-1600 is driving me nuts. On one station (PBS 1080i) it is dreadful, but on NBC (1080i) it is working well.
I know from reading threads in this forum that the combo of video and audio codec can make a difference with lip sync (not sure why) and I have experienced that. So I have used a combo (Cyberlink defined as default video codec) and the default audio codec. But I still have the erratic recordings that are out of sync. I am recording in dvr-ms, fwiw.
What is the best way to confirm where the problem is at? For instance,
1. How I can find out the actual codecs being used during playback. Can PVRX2 show them in an OSD during playback?
2. Does playing back on a PC using VLC or WMP help diagnose if there is a difference?
3. Is the lip sync issue at record time or is just a playback problem?
4. Does using 'watch' from TV Guide handle the sync issues differently than if you record it?
I know from reading threads in this forum that the combo of video and audio codec can make a difference with lip sync (not sure why) and I have experienced that. So I have used a combo (Cyberlink defined as default video codec) and the default audio codec. But I still have the erratic recordings that are out of sync. I am recording in dvr-ms, fwiw.
What is the best way to confirm where the problem is at? For instance,
1. How I can find out the actual codecs being used during playback. Can PVRX2 show them in an OSD during playback?
2. Does playing back on a PC using VLC or WMP help diagnose if there is a difference?
3. Is the lip sync issue at record time or is just a playback problem?
4. Does using 'watch' from TV Guide handle the sync issues differently than if you record it?