Xvid to VCD. Are there any special issues to note?

[fiiido]

I have several avi movies d'loaded using kazaa. I can watch them fine in WMP with no sync problems.

However, using Vdub to extract audio (full processing) and TMPGEnc to convert to mpg I get progressive audio sync. The time length of the avi is about 10-20 secs lobegr than the audio.

Is there anything special I need to do for Xvid files. The DivX ones seem to work fine.

Also on "RING" original japanese version, I get "reconstructing bad frames" error when opening in Vdub. Is this terminal?

thanks all

[wee haggis]

With XVID I do not extract the audio (just feed it directly into TMPGEnc).
Only extract audio fro DIVX.

[bolta]

Hello,

From memory, the VCD standard won't support anything else other than stereo-channel, PCM-format WAV sound.

What's worked for me is:-

1) to use VDub to demux the audio to a wav file,
2) rename this wav file with an AC3 extension (ie "sound.wav" becomes "sound.ac3"),
3) and then process the sound using something like BeSweet into a WAV file that be loaded into TmpgEnc as the audio source.

I haven't come across a sync problem yet, and I make a lot of VCD's. No guarantees it'll work for you, but it can't hurt to try, huh?

Cheers,

B.

PS - I'm making the assumption here that most xvid avi files HAVE an AC3 soundtrack. A utility like GSpot should be able to tell you what sort of codecs are involved with your particular avi files

[mats.hogberg]

However, using Vdub to extract audio (full processing)

Extract as Direct Stream to bypass VDubs sound processing routines, that seems to have problems with some kinds of audio encoding (this is not related to the AVI being an XviD or anything - it just seems to happen that those who use XviD for video also like less common audio encoding...)
Like bolta says, this "wav" that VDub spits out has to be renamed with the proper extension (ac3/mp3/ogg...) and then converted to wav with the apropriate tool for the task.
Another way is to just load the AVI in Goldwave, and save out as wav, possibly doing some sample rate conversion, normalizing and other stuff first.
And - don't fight with crap AVIs dl'ed from KaZaA. Most of the time, it's simply not worth it!

/Mats

[honorarybrutha]

i'm using the source file (whether divx or xvid) for both the video and audio feeds into tmpgenc. i have no audio sync problems anymore since i installed odio dekoda for ac3 audio. i still run the source file thru vdubmp3 to scan for bad frames first. i used to have the same problems described here. now it doesn't seem to matter what the source file is.