Joining videos problem in VDub

[Remyisme]

I am trying to join 5 video parts, in VDub, but something wierd is going on, I first opened the first part, than i clicked Append AVI Segment, each time i joined each of the rest 4 files, but something wierd has happend, i was watchiong the joining prosses closely, and i noticed that the estimated time for it is over 6 hours which seemed pretty wierd to me, plus, i noticed that, after the part where my video was supoused to end, for some reason part 3 was joined there again, i tryed to do this again throu VDubMod, but it seems to do the same... i don't understand why.
I also noticed, that there is a little slight audio sync problem, in the result video, it is not as sharp as in the original files.
Is there another way to join the videos, without loosing quality? is it possible to do it with TMPEG thing? any other softwere?

[Abond]

It depends of the file types.

[mats.hogberg]

Is it the joining that takes 6 hours, or the saving out of the joined file?
Are you saving "Direct Stream" or reencoding the lot (sounds like the latter)?

/Mats

[celtic_druid]

VirtualDub supports autoloading sections. So if your files have a sequential naming scheme, then when you append the second part, it will add all 4 parts. You then append the 3rd part and you get 1+2+3+4+5+3+4+5, add the 4th and 5th and it would be 1+2+3+4+5+3+4+5+4+5+5

[sacajaweeda]

Me personally, I'd just use an AviSynth script to join all the video clips and make any audio sync delays then feed the script to your encoding application.

[celtic_druid]

That is assuming that the OP wants to re-encode.

With AVISynth, if you use ++ instead of + for joining, then there should be no audio delays, since it compensates for different stream lengths. ie. say this is stream 1
VVVVVVVVVVVVVVVVVVVVVVVVVV
AAAAAAAAAAAAAAAAAAAAAA
The audio finishes early. When joining via say VDub, this means that the second part's audio would start early. With AVISynth and part1++part2, it inserts silence so that the video and audio stream's lengths match. That way the second audio stream's audio, starts when it supposed to start.

If you have the video set to direct streaming in VDub and you see a difference in sharpness, then I would suggest that you are imagining it.