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View Full Version : Playback error with AC3Filter


cca
6th December 2002, 17:41
Unfortunately I encountered jerky playback with this AC3 decoder that Valex made. I tried any interleave value I could think of including the ones in the FAQ, nothing. If I use the cyberlink dshow filter or Audio Dekoda the video plays fluently. I hope that Valex can correct this in some future version of the decoder. My audio hardware is a Soundblaster Audigy Player. The output is passing through directsound (waveout gives no multichannel and losses sync from time to time). I should also mention that I mux the .avi using AVIMux GUI, but I also tried Nandub without success.

OvERaCiD23
6th December 2002, 20:53
I'm using it now, and think it's an awesome filter. I've wanted an AC3 filter with adjustable gain for quite some time (similar to DeDynamic). It's quite useful when I playback audio on a receiver w/o Dolby Digital decoding ~~> no digital input (2ch output through headphone jack). i've had no troubles with it, yet, hopefully nothing will pop up.

cca
6th December 2002, 21:10
Well, it seems that it wasn't AC3Filter's fault. There is some stutter with Audio Dekoda too after all. I tried installing older drivers for my SB Audigy, the same thing. I even tried disabling the Audigy and enabling the AC97 Codec my mobo has onboard. Still, the stutter remains. So, it must be something else. Please note that I conduct all the tests by playing the movie on TV, not on the monitor. Even a single frame drop will immediately show up on TV while it may not show on the monitor. At this point I'm clueless, I have no idea what's causing this but it's a pity. I can watch DVDs with PowerDVD without a single stutter or jerkyness but I can't watch my XVID & DivX encodes without occasional stutter. And it cannot be the CPU, it happens even at the lowest resolutions. And it happens bot with ffdshow and XVID's own decoder. It's totaly frustrating. :(

Valex
9th December 2002, 12:24
Is it an errors in stream? (errors counter is near to frame counter at main filter's page)

cca
9th December 2002, 13:37
No my friend, it is not an error in the stream. It turned out that I suffer from a classic A/V sync problem. I found a solution just yesterday night in the "General Discussion" forum. Check out this thread: http://forum.doom9.org/showthread.php?s=&threadid=39887 .
I tried the new audio renderer from the above thread, it really does the job! And it works with AC3Filter just fine on my PC.