2010-09-18, 21:36
I'm having a problem with some of my blu-ray rips. Most of them manage to play flawlessly, but some stutter at certain points. The only thing that is changed from the original .mt2s is that the video and audio are muxed into a MKV container with FLAC multichannel audio. I use Another EAC3to GUI Plus (http://forum.doom9.org/showthread.php?p=1393863).
I have refresh rate change and sync a/v (resample audio) enabled. Vsync is always enabled.
The problem is at it's worst with my rip of Batman Begins (VC-1 video). It changes to 23.976 just fine, but the intro stutters at certain points and continues to do so into the movie. When I press "o", I notice the stutters occur when the PC:24 changes to PC:none, the FPS drops, and the error% goes crazy. It recovers, but eventually happens again. No frame drops are recorded. The stutters always occur at the same parts of the movie.
The behavior happens in both a clean install of Windows 7 and the Linux Beta2 livecd. MPC-HC and VLC play the file perfectly. I'm running an ION system (ASUS AT3IONT-I motherboard) with 4GB of RAM.
I've noticed a lot of the ffmpeg code is a few months old (in particular VC-1 which is 8 months out). http://trac.xbmc.org/browser/branches/Dh...libavcodec Could a newer version of ffmpeg solve the problem?
Debug log: http://pastebin.com/Fg1tK94A
First 50 seconds of the film: http://www.multiupload.com/SFLXGT6P8P
Update 10/16/10:
Mnementh has conducted some tests and it seems like the problem is with the multichannel FLAC audio. Regardless of what encoder is used, Blu-ray rips with FLAC audio exhibit stuttering and framerate problems. If the FLAC is converted to PCM, the file plays fine.
Update 10/25/10:
I've created a bug report ticket: http://trac.xbmc.org/ticket/10581
I have refresh rate change and sync a/v (resample audio) enabled. Vsync is always enabled.
The problem is at it's worst with my rip of Batman Begins (VC-1 video). It changes to 23.976 just fine, but the intro stutters at certain points and continues to do so into the movie. When I press "o", I notice the stutters occur when the PC:24 changes to PC:none, the FPS drops, and the error% goes crazy. It recovers, but eventually happens again. No frame drops are recorded. The stutters always occur at the same parts of the movie.
The behavior happens in both a clean install of Windows 7 and the Linux Beta2 livecd. MPC-HC and VLC play the file perfectly. I'm running an ION system (ASUS AT3IONT-I motherboard) with 4GB of RAM.
I've noticed a lot of the ffmpeg code is a few months old (in particular VC-1 which is 8 months out). http://trac.xbmc.org/browser/branches/Dh...libavcodec Could a newer version of ffmpeg solve the problem?
Debug log: http://pastebin.com/Fg1tK94A
First 50 seconds of the film: http://www.multiupload.com/SFLXGT6P8P
Update 10/16/10:
Mnementh has conducted some tests and it seems like the problem is with the multichannel FLAC audio. Regardless of what encoder is used, Blu-ray rips with FLAC audio exhibit stuttering and framerate problems. If the FLAC is converted to PCM, the file plays fine.
Update 10/25/10:
I've created a bug report ticket: http://trac.xbmc.org/ticket/10581