Another xVid conversion question...

[Bookmd]

Ok
I've read all the tuts on this..did what I was supposed to to convert to SVCD.
Took out audio, split xvid to <80min (as supposed to do in TMGPenc...I think its <80...) for total of CD1 and CD2
Converted to svcd via 2 pass vbr incorporating audio.

Works fine.

What I've noticed is that on CD1 pic quality is, say 8/10 but video is nice and smooth...on CD2 pic quality is 10/10, but video seems kinda jumpy...audio well synch'd on both...

My theory: Since a different vbr conversion done for each svcd (cuz they say don't do >80min at once...) could that account for my findings?...like it decides to do 25new fps and sacrifice pic quality...and maybe next, do 12.5 new fps, doubling it to 25 total (just an example) to pump pic quality...?

What do you think...anybody else noticed this?

[ching0]

try not running any other programs while you're encoding.

i used to have AIM open and maybe one or two other things, and the first CD would be good, but i guess once it stops using a certain amount of memory, it's priority drops. so, if your computer lags for the second cd it might mess it up.

[Bookmd]

Interesting...can't be the case here...I've got a puter dedicated to video processing/editing...it doesn't do anything else...

[flitzanu]

just my input, i had issues converting an xvid the other day, i couldn't get tmpenc to understand it. i ended up loading it in virtualdub and saving it as a raw uncompressed .avi file. of course it ended up being like a 68 gig file, but from there i converted it into what i needed (mpeg2) and had no problems from there.

that's not really your issue here, but i thought i'd offer the idea.

[ZippyP.]

i ended up loading it in virtualdub and saving it as a raw uncompressed .avi file. of course it ended up being like a 68 gig file,

You might want to try frameserving, no need to save such a large file. Here's a guide.

8)

[ZippyP.]

try not running any other programs while you're encoding.

That shouldn't affect the quality of the video, only the conversion time. I'd look elswhere for an explanation like:

Were the encoding methods identical, same settings etc.?
Were the clips the same length?
Is the media good? (Try a slower burn speed.)

[neomaine]

Bookmd,

Or, you could always encode the whole thing to one 1.6gb file and simply use TMPGenc to cut into 2 seperate 800meg pieces.

This will give you a consistent encode of the whole movie, and, allow you to cut at a more appropriate scene or frame, even overlap by 5-10 seconds between CDs.

[funkguy4]

Yah, except for, neomaine, cutting wiht TMPGEnc is bad because it's preview pane is inaccurate, so use something else (go to doom9 or DivXDigest).

Or, you can frameserve the parts you want with VDub, and whats this about >80 and <80? Just use M$ Calc to figure out some good CBR settings and use the CQ mode in TMPGEnc with thequality at something like 60 to 80 to give TMPGEnc some leeway to reduce the bitrate incase they're not necessary. Try the KVCD templates also (available at kvcd.net).