converting xvid/avi to vcd

[thereaper]

hi all,

i am trying to convert a xvid/avi file to a vcd without much luck, no problem is as follows:

when i try to encode the movie to vcd via tmgenc, the audio is out of sync with the video.

I have tried trying to extract the audio to a wav file and to a uncompressed audio file, both without success

anyone have any ideas?

thanks in advance

[Tommyknocker]

Could you be a little specific as to why you were not successful extracting your audio?

[thereaper]

sorry, i`ll try to be a bit more clear

i can extract the audio fine with virtual dub, the problem comes only when i try to reencode via temgenc to a vcd file.

the mpeg is allways out of sync

i have tried extracting the audio to a seperate file and a uncompressed file, no luck.

thanks

[Tommyknocker]

Have you looked at these guides?

[Ejoc]

in TMPGEnc if you click on the source range, you can adjust the audio sync manually.

[Tommyknocker]

Ejoc, could you explain how that is done. I have seen the function, but have no idea how to implement it. Please "break it down", so there is little chance of a misunderstanding on my part.

[thereaper]

thanks for all your replys, i will look at this guides in more detail later

[Ejoc]

Tommyknocker,

Well, basicly when you adjust the ms delay you can see the audio in the graph under neath the picture move to set how much delay you need.

Example:
I had a stargate episode who's audio was almost a second out of sync. The audio was comming late, so I took a frame where there had been silence before that frame, and on that frame there was sound. I just held the ms adjust button down untill I could see the audio wave on that graph under the picture. It ended up needing like -700ms. I encoded a 10 second long conversation to make sure I got it, but that was it.

Sorry if my explanation isnt great, it assumes you have a ruff idea of how you sync is off, and that you have a spot where there was silence before it and that the sound starts on that frame.

[JEEPn]

What i've done is, when you have split the audio(wav) and video(avi). Usually the wav file sample rate is a 48000hz, you can check this in VDUB by loading the AVI and going up to File...File Information. There you will see Video stream breakdown and Audio stream breakdown. I use BeSweet to convert the wav to a 44100hz wav, then use TMPGEnc and take the split AVI and the new WAV and create the mpeg1 or mpeg2 to burn as a VCD/SVCD. I hope this helps

[Tommyknocker]

Thanks, Ejoc. I assume this is just for static drift, or does it work for gradual drift as well?

[Ejoc]

Nope, if you are losing "more" sync as the video goes, TMPGEnc cant correct for it.

[Laddydaddy]

Tommyknocker,

Virtual Dub may actually be better for correcting static drift in the source file. It performs the same function as TMPG with one exception, you can hit the play button and tell if your source video is out of sync. You can adjust the audio skew until the video and audio are in sync and then start frameserving to TMPG.

[Ejoc]

Laddydaddy,

When you use VD for that, will it tell you the ms delay its using to correct the sync? if so, you could use VD to get the delay to correct the sync, and then use that setting in TMPGEnc to reduce a Frameserve from VD.

[Laddydaddy]

If you use the audio skew to correct a sync problem, you have to choose the number of ms yourself. It's kind of a trial and error thing. I usually start out using 500 and then adjust the number from there. If the audio plays first, you use a positive number. If the video plays first, you use a negative number (i.e. -500).

[dts1]

iam trying to convert a avi xvid movie to mpg using tmpg. the picture comes out great but the movie has no sound. Iam i missing s codec or iam doing something wrong.
thanks