AV synch post-production problems

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AV synch post-production problems

Postby Ashton » Sun Dec 22, 2002 12:08 pm

Allright, so I produced a whole MV using dummy MJPEG files and I went and replaced them with my original DVD source. Everything got screwed up for some reason (all the frames were between 1 and 20 frames faster than the fummy files were, and it was completely random how off they became) but I fixed that. I only mention it because it might have relevance to my current problem.
Anyway, I finished the vid, and output into Huffy so I could try an output from Vdub. After a long and hard battle with Vdub and AVS, I rigged my AVS file as follows:
video = AVISource("C:\amv\full.avi")
audio = AVISource("C:\amv\full.avi")
AudioDub(video, audio)
crop(8,0,-8,0)
LanczosResize(480,352)

and the sound and video look like they are probably right in Vdub. So I output using XviD on 2 passes but the outup is messed up. The start of the file is fine. It works well for about 20 seconds and then there is a slight jitter, the video freezes for a second but the audio keeps going. The video then resumes, but its completely lost A/V synch. There are more slight jitters thruought the rest of the video aswell.
I tried encoding starting from a later point, but that produced largely the same results.
Any ideas?
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Postby RadicalEd0 » Sun Dec 22, 2002 2:24 pm

sounds like an encoder or decoder problem, first try playing back the clip in vdub and see if the same thing happens, if so then theres something wrong with the way its being decoded. Otherwise its an encoding problem and you might want to download a different build of XviD or try re encoding with different settings.

btw, when using avisource you dont need to audiodub, avisource reads the audio from the file and passes it along automagically
AVISource("C:\amv\full.avi")
will work fine
NMEAMV: PENIS
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NMEAMV: MIXED
NMEAMV: DRINK
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Postby RadicalEd0 » Sun Dec 22, 2002 2:25 pm

RadicalEd0 wrote:if so then theres something wrong with the way its being decoded.


should be if not then theres something wrong with the decoding >_<
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Postby JustAnOrdinaryPanda » Sun Dec 22, 2002 3:22 pm

I know XviD is DivX backwards, but is XviD a codec on it's own? Or is it a 'cool' way of saying DivX?
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Postby RadicalEd0 » Sun Dec 22, 2002 3:29 pm

hahaha Image

when projectmayo was formed back in the day to build a legal nonhack version of divx a bunch of projects spun off and were developed independently. 3viX, DivX 4 which led to 5, and XviD (probably some other obscure nonsuccesses too)
XviD is the only one thats still opensource and not being handled in a big omg corporation way but being developed and revised constantly. That makes it less stable than say DivX Networks which releases DivX in incremental versions (4, 5, and then updates like 5.01 and .02) but also way cooler and more versitaile (sp). XviD is currently being developed and compiled by 3 guys from Doom9, Koepi, Nic, and Umaniac. AFAIK most people use Koepi's builds.

in other words ya its a very different codec from any version of DivX despite similar roots
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Postby JustAnOrdinaryPanda » Sun Dec 22, 2002 3:33 pm

RadicalEd0 wrote:hahaha Image

when projectmayo was formed back in the day to build a legal nonhack version of divx a bunch of projects spun off and were developed independently. 3viX, DivX 4 which led to 5, and XviD (probably some other obscure nonsuccesses too)
XviD is the only one thats still opensource and not being handled in a big omg corporation way but being developed and revised constantly. That makes it less stable than say DivX Networks which releases DivX in incremental versions (4, 5, and then updates like 5.01 and .02) but also way cooler and more versitaile (sp). XviD is currently being developed and compiled by 3 guys from Doom9, Koepi, Nic, and Umaniac. AFAIK most people use Koepi's builds.

in other words ya its a very different codec from any version of DivX despite similar roots


Ah, figures. Is it better than the most recent official DivX?

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Postby RadicalEd0 » Sun Dec 22, 2002 3:35 pm

how could you even ask such a thing :O

yes :p
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Postby JustAnOrdinaryPanda » Sun Dec 22, 2002 3:38 pm

RadicalEd0 wrote:how could you even ask such a thing :O

yes :p


Sorry, I don't normally use DivX or anything. Since I haven't made anything I'm willing to upload, I just use Mpeg, my laptop hates DivX, although I swear it's not just me...
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Postby RadicalEd0 » Sun Dec 22, 2002 3:41 pm

JustAnOrdinaryPanda wrote:Since I haven't made anything I'm willing to upload


I hear ya

I only know such because I do dvd rips and things :\
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Postby Ashton » Sun Dec 22, 2002 8:48 pm

RadicalEd0 wrote:btw, when using avisource you dont need to audiodub, avisource reads the audio from the file and passes it along automagically
AVISource("C:\amv\full.avi")
will work fine

Crap, then Im doing something wrong because I had to figure all that dubing crap out BECAUSE it wasnt passing the audio along... :cry:
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Postby Ashton » Sun Dec 22, 2002 8:58 pm

GRrrr.... *smacks self in head* well gosh, I think I figured out what was wrong. I played it in VDub and it was perfect... so I looked at it back in my usual player (which happens to be RealOne) and it was still messed. So I was about to post that here, and then I though (hey, lets try another player) so I whiped out The Player (the one that comes with DivX 5) and it works perfectly fine... Grrr... Thanx any Ed.
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Postby Ashton » Sun Dec 22, 2002 9:10 pm

GRRRRR.. DOUBLE GRRR... I just check this out windows media player, and it does the smae thing. So it only works in The Player and VDub! What is this Ed?!?!
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Postby RadicalEd0 » Sun Dec 22, 2002 9:44 pm

thats weird that it works in vdub and
oh wait
wait
did you change the fourcc at all?
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Postby Ashton » Mon Dec 23, 2002 2:34 am

RadicalEd0 wrote:thats weird that it works in vdub and
oh wait
wait
did you change the fourcc at all?

Of course, its set to DivX fourCC, but thats not anything unuasual is it?
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Postby Ashton » Mon Dec 23, 2002 7:50 am

Ugghh.. this is bad, I just found out it doesnt even run right in Premiere, what is WRONG WITH THIS VIDEO!?!?
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