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View Full Version : Massive out of sync problems HDTV->XVID+AC3


Taurec
6th July 2005, 11:44
Hello,
I make it quick. Of course I searched for other threads on sync problems but these did not help. The situation:

I have a movie in HDTV, 100 MB files that are numbered like this: 0000.ts;0001.ts and so forth. I took the files and used HDTVtoMPEG to create huge MPEG out of these files. Out came a ~8 GB file. I loaded this into AutoGK, switched on the options I want (AC3 Audio, XVID, ESS compatiblity, site 1/3 DVD). After 10 hours I get the file but the audio is totally out of sync, I would assume at least 8-12 seconds. I tried to fix it in VdubMod, but it seems the gap is too wide to fix it.

New plan. Since the MPEG played perfectly in sync I decided to export the AC3 and convert to MP3 using BeSweet. Remuxed in VdubMOD, played: Perfectly in sync all the way. Right now I do something else, I used the NullPacketStripper to create once huge .TS file out of the many 100 MB files and use that with AutoGK.

Someone has another idea why such a huge sync problem would appear? The best would be a video software that shows the video and audio as tracks so I could simply move the AC3... is there something like this? Vegas would not open the AVI.

len0x
6th July 2005, 21:28
try joining all TS files into one using ProjectX...

HookedOnTV
8th July 2005, 18:59
For HD TS files I:

Combine in to one file with HDTVtoMPEG2 outputting one large TS file.
Use DGIndex to demux the AC3 track.
Use AutoGK to encode the TS to my desired size, select No Audio Track.
Mux AVI and AC3 files with AVIMuxGUI.

len0x
8th July 2005, 21:12
If you're using DGIndex to demux audio, then I see no reason for AutoGK not being to process audio in TS.

HookedOnTV
17th July 2005, 21:02
I was doing the muxing outside of AGK because I thought it was causing the lipsync issues I am having. Looks like that wasn't the problem. I'm having a real hard time maintaining lipsync, by the time I reach half way through the movies it is off. I been trying some other solutions like converting the ac3 to aac and that is sometimes fixing the problem but not always. So now I am trying creating mp4 files to see if it is a problem with avi.

This is getting very annoying, I wish I could just figure out what is causing it.

HookedOnTV
17th August 2005, 15:06
Well I finally identified my problem and found a fix. On trouble ts files I have found that they have video stream errors, as identified by mpeg2repair in log mode, but good audio so there isn't enough video to match with the audio. A program called videoredo is working for me. It removes the audio where the corresponding video is missing.

travisbell
21st August 2005, 01:10
VideoReDo is an amazing application. The new 2.1 version replaced MPEG-VCR in about 3 minutes.

Just thought I would add my opinion ;)