Audio and video out of sync after merging in TMPEG pls HELP!

[Homer Simpson]

Hi, I have two SVCDs that i want to put onto a DVD-R, i have followed most of the guides, and have found that my audio is out from the video after burning, i have found that this happens at the stage where i merge the two in TMPEG. What am i doing wrong? It only goes out at the transition between the two, the first half is fine but the second is miles out! HELP!

[wee haggis]

Seems to be a common problem.
Read this previous thread:

Rico49 posted 2003 Feb 24 22:49
All the mpeg merging tools I've used in the past do an excellent job of stitching (not true merging) multiple mpegs into one. However, if you plan on doing anything with the stitched mpeg other than viewing it on your pc, you're screwed. You can't mux, reencode, dvd author them because it will only do the first part of a stitched mpeg instead of the whole file. Now I know you don't want to hear this, but TMPEGEnc does do a true merge. I did run across the same problem you are having with video/audio going out of sync on any part other than the first. What I found out is if the mpeg file is encoded at a true ntsc 29.97 fps or 25 fps pal, your mpeg files will merge correctly keeping all parts in sync--it does not matter if they were encoded in cbr/vbr/cq. However, if the mpeg is encoded at 23 fps with a pulldown for ntsc 29.97 fps playback, the mpegs will not merge/sync correctly. I don't know why this is so. I had many SVCD's that I put on DVD and after many trial and errors, the 23 fps encoded mpeg was the culprit. What I do now is I load the mpeg into TMPEGEnc as if I'm going to reecode it. If it says its a film video, I'll know it was encoded at 23 fps, therefore, merging will not happen. At this point, I'll either reencode each part to 352x480 29.97 fps, audio 224 48K then merge for DVD burn or load into Virtualdub then recompress with Divx5 with a bitrate of 10K or one pass quality base to keep the quality as close to the original mpeg, then merge both resulting avi's with Virtualdub, reencode with TMPEGEnc.

I know it's not what you wanted to hear but hope some of this helps in some way.

Rico

[poopyhead]

1) given a progressive source, encoding in tmpgenc as 23.976 fps + 3:2 pulldown will yield higher quality than encoding as 29.97 fps + interalced output. makes sense...less frames to encode, so each frame gets more bitrate.

if you have to re-encode 23.976 fps to 29.97, then quality will suffer and not sure if it will look good on your computer...only on TV, since computer monitors are progressive and have a hard time handling interlaced video, which would be the case if you had to re-encode to 29.97 fps.

2) re-encoding, itself, will reduce quality somewhat.

[Homer Simpson]

Thanyou for your help, but sorry i am new to this what should i do ( in laymans terms please)! Thanx