DivX to SVCD --> AC3 Problem??

[AliZiegler]

Hello together,

I've read a lot of topic in the forums but I don't find a hint about my problem.

I think I have a DivX with AC3 because if I open the video file with virtual tub and look at the file information, in the field audio compression is shown "Unknown (tag0055)". I all topic with AC3 the field contains normally "Unknow (tag2000)"!!??
I've copied the audio file with "direct stream copy" on my hd and renamed it to .ac3.
I've downloaded all tool and dlls refering to headac3he-0.23a. If I open the ac3-file with headac3he the message "Cant find AC3-header" is shown.

What is wrong? Am I only to silly?

Thanks in advance for all answers.
Alexander[/img]

[AliZiegler]

addition: I can play the avi file without any problems with the windows media player.
I installed the Nimo Codec Pack before I tried to convert the audio file.

[ACS651]

Hi Aliziegler,

I know how you feel about this problem.

I have tried all sorts of ways to get round the problem without success, from previous posts in the forums.
I find the problem only seems to be from any avi files that were encoded using EasyDivx. All other avi movies encoded via other means seem to be ok.
It has made me very frustrated lately so have given up ripping any movies with any unknown audio compression.

I thought there would of been more mentions in the forums about this particular problem, because a lot of avi movies are ripped using EasyDivx.

[bolta]

Hey y'all . . .

Try this for a solution . . . (NOTE - need a LOT of disk space for this)

1) look for a utility called "AVI2VCD", v1.4. Along with the main program file there should be another file called "decompress.exe"

2) start this utility - it's an audio de-compressor, which will read files such as the ones you are having problems with.

3) load up the avi file in question - it will generate a file name for the decompressed version of the same file

4) run the program - it will take a few minutes to generate the file.

5) open up the uncompressed file in Virtual Dub - look at the file information for the file, and you'll now see the audio described as PCM (uncompressed)

If you want to sync the audio and re-encode the file using Virtual Dub, try this . . .

1) start Virtual Dub, and open up the PCM avi file you created earlier

2) under the audio menu, select "wav audio" (loading up the wav file you stripped out earlier), and also select "full processing mode"

3) under the video mode, select "frame rate", and select "change so audio and video durations match"

4) select compression - I use Huffy for my encodes, but try something else if you want to.

5) select "save avi" from the file menu - depending on compression codec, you could end up with a LARGE avi file (mine typically end up about 11 gig in size)

6) sit back and wait - huffy gives me almost realtime encoding of the avi, something like DivX will take longer

7) when finished, load the new, large avi into VD and check that the sound and video are synced - they should be!!

8) you could now use this avi file to generate a VCD/SVCD (depending on frame size) using TmpgEnc with no further work.

Hope this helps,

B.

PS -if you need the decompress utility "decompress.exe", let me know

[AliZiegler]

First of all many many thanks for all answers.

In the meantime I tried to convert the avi directly. And it works, I can't believe it. In TMPGEnc I use the avi file as source for video and audio and the quality is great - WITH AUDIO!!!

Why does the tutorial shows, that you have to pick a separate audio file for encoding to SVCD??

CU
Ali

[bolta]

Hey . . .

Using an external WAV file is usually the easiest way to overcome any "creeping sync" problems where the audio may gradually go out of the sync with the video over the course of encoding

B.

[sokhapkin]

Hello together,

I think I have a DivX with AC3 because if I open the video file with virtual tub and look at the file information, in the field audio compression is shown "Unknown (tag0055)". I all topic with AC3 the field contains normally "Unknow (tag2000)"!!??

Alexander[/img]

Unknown tag0055 usually means DivX 3.X audio codec used. Just install DivX 3.12 to get rid of the problem.