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View Full Version : .ts AC3 audio sync issue and process... a better way???


travisbell
8th June 2005, 07:47
Hey guys, I have posted here before about*this but I would like to ask something a little different.

Every now and then the .ts file I have recorded has some glitches in it and will cause the audio to lose sync with the video. This happens when I encode the video with AutoGK. The .ts will always play fine with WMP or whatever.

This is my process that I have found to be the BEST at ensuring sync.

1. Re save the .ts as a new .ts in ProjectX (this method has saved me tons of times since ProjectX detects most of these errors and attempts to regain sync.

2. Cut and save new .ts with mpeg-vcr.

8/10 times this process will result in a perfect .avi when encoded with AutoGK. But yet, there are still those 2 times when the glitch was bad enough ProjectX couldn't save it.

Is there anything I can do to make this more reliable cause' when it does fuck up, the only way I have figured to get it better is cut out the bad part of the .ts and re-encode and that takes for bloody ever.

Thanks guys!

Kika
8th June 2005, 11:05
Don't save as .ts. Let ProjectX do a demuxing.
Check the settings in ProjectX, there are several Ways to handle audio and video problems.

Pookie
8th June 2005, 16:06
Run the file through Mpeg2Repair first, before ProjectX

http://users.adelphia.net/~mwilczyn/mpeg2repair/


Demux in ProjectX, run the ac3 through ac3 cutter, which doesn't cut anything, but rather fixes the various bit rate issues inside the file.

http://forum.doom9.org/showthread.php?t=92325&highlight=ac3+cutter


That'll up your sync success rate to 98%. A bit more work than just running it through AutoGK, but much more accurate.

travisbell
8th June 2005, 18:53
Check the settings in ProjectX, there are several Ways to handle audio and video problems.

Mind sharing what these settings are? I see the settings yes, but I don't know what of them do...

Thanks!

dlight
10th June 2005, 19:39
I'd be interested in knowing a bit more about the ProjectX settings as well.

Kika
11th June 2005, 14:05
Um, sorry, i don't know a good guide in english, only the german guide, done bei Lucike.
But go to the audio tab and look for "fill gaps with prev. frame" and "add frames". One of these options should be activated.

Pookie
12th June 2005, 01:12
Here on Doom9, go to

Guides----->TV Capture----->ProjectX Reference (in English)

travisbell
12th June 2005, 06:53
Here on Doom9, go to

Guides----->TV Capture----->ProjectX Reference (in English)

Cool! Thanks.

KingKong954
29th June 2005, 00:29
Run the file through Mpeg2Repair first, before ProjectX

http://users.adelphia.net/~mwilczyn/mpeg2repair/


Demux in ProjectX, run the ac3 through ac3 cutter, which doesn't cut anything, but rather fixes the various bit rate issues inside the file.

http://forum.doom9.org/showthread.php?t=92325&highlight=ac3+cutter


That'll up your sync success rate to 98%. A bit more work than just running it through AutoGK, but much more accurate.

How do you get the files back together to use in AutoGK?

Pookie
29th June 2005, 02:39
"How do you get the files back together to use in AutoGK?"

You can mux it with many different muxing apps

THIS one works quite well.
http://www.kvcd.org/downloads/mplex.exe

*Note - You'll have to manually type in the .AC3 file name when you click on the audio file choice.

Choose "Mpeg2" for the muxing option.

-Kind of a shame to do that, since AutoGK will just demux it again-