Thanks for the awesome software, I am already a huge fan of Plex. But I have a major problem that I hope someone can shed some light on. I have searched the forum for related issues, but so far have not found anything directly related to this particular issue.
Apologies in advance for the long post. I do tech support for an audio interface company as my day job, so I am trying to anticipate your questions and detail my troubleshooting process so far.
I have quite a few DVD rips that are not playing properly in Plex. These are MKV rips from commercial DVDs. The tool used for ripping these is MakeMKV. This software just pulls the untouched MPEG2 video off the DVD and wraps it in an MKV container. When ripping I deselected the subtitles and extra audio tracks, so only the feature video with default audio remains.
The audio lags behind the video. At start, the audio and video are perfectly in sync, but after a short period the lip sync is definitely off. The time it takes seems to vary a bit from file to file, but between 5 and 15 minutes in it is too annoying to continue. It seems to get progressively worse as the file plays. In order to resync, I have to stop and resume playback (pause/play does not resync).
I have some MP4 videos ripped from DVD with HandBrake that do not exhibit any sync problems. The same file causing problems in Plex plays perfectly in MPlayer OSX Extended* on the same hardware. The same file also plays almost perfectly on my WD TV media player**, so I really think this may be a combination of a Plex issue and a file problem. Interestingly, I also have some shorter (45 min) TV episodes ripped from DVD (same method used) that seem to stay in sync throughout.
* In order to get perfect playback in MPlayer OSX Extended, I have to set "Screenshot location" to "disabled". There is some issue with filters and MPEG2 video that causes video tearing with the default options. VLC plays fine as well, but skipping in the timeline crashes current VLC builds.
** "Almost perfectly" here means the audio sync is perfect, but there were a couple unusual glitches during playback on the WD TV hardware.
My hardware is a stock new Mac Mini 2.26GHz w/ 2GB RAM, file playback from a WD hard drive (USB2, HFS+ Journaled). Kanex Mini DisplayPort to HDMI adapter, HDMI to TV input. The TV is a Panasonic plasma (TC-P50G10). The Mac Mini display preferences are 1080p/60Hz.
I tested both decoding at the receiver (mini toslink to toslink) and using the analog out of the Mac Mini. No difference.
Any ideas for troubleshooting, fixes, or confirmation are appreciated!
# Is it reproducible?
# Can you document the steps to reproduce it so that happens every time?
# Does it still happen after deleting /Users/USERNAME/Library/Application Support/XBMC ?
Yes, even after a complete removal of all Plex files and reinstallation.
# Does it happen on any other machines you have around the house/office?
Yes, also on my MBP 4,1 with Plex v0.8.3 and OS X 10.6.2.
EDIT: Here is a clean log file, from program start to program quit after the movie became unwatchable. I don't see any relevant messages here though.