Changing DVD audio track problem.

[Mugeb]

Hi ! :)

I've two DVD edition of a same movie. One have a great image but only have a dubbed audio track (English). The other have the originale language audio track (Cantonese).

So I would like to replace the audio track of the DVD with the great image by the other one.

Both DVDs are PAL and have aproximatively the same duration. The end is few second shorter (12 seconds) at the end in one of the DVD.

I've demuxed the audio and the video with Vobedit et remuxed them with Ifoedit. But when I play the new DVD I've a progressive time lag. :confused:

How can I fix this ?

Here the Delaycut audio tracks infos if this can help :

ENGLISH TRACK
====== INPUT FILE INFO ========================
File is ac3
Bitrate (kbit/s) 448
Act rate (kbit/s) 448.000
File size (bytes) 299321344
Channels mode 1/0: C
Sampling Frec 48000
Low Frec Effects LFE: Not present
Duration 01:29:05.024
Frame length (ms) 32.000000
Frames/second 31.250000
Num of frames 167032
Bytes per Frame 1792.0000
Size % Framesize 0
CRC present: YES
=============================================
====== TARGET FILE INFO ======================
Start Frame 0
End Frame 167031
Num of Frames 167032
Duration 01:29:05.024
NotFixedDelay 0.0000
=============================================

CANTONESE TRACK
====== INPUT FILE INFO ========================
File is ac3
Bitrate (kbit/s) 192
Act rate (kbit/s) 192.000
File size (bytes) 127994880
Channels mode 2/0: L+R
Sampling Frec 48000
Low Frec Effects LFE: Not present
Duration 01:28:53.120
Frame length (ms) 32.000000
Frames/second 31.250000
Num of frames 166660
Bytes per Frame 768.0000
Size % Framesize 0
CRC present: YES
=============================================
====== TARGET FILE INFO ======================
Start Frame 0
End Frame 166659
Num of Frames 166660
Duration 01:28:53.120
NotFixedDelay 0.0000
=============================================

Thanks for your help. :thanks:

[blutach]

Considering 1 track is shorter than the other, it would seem likely that it would get out of sync.

Maybe stick with Cantonese with Subtitles?

Regards

[r0lZ]

Demux with PgcDemux.
Convert the AC3 stream to WAV with BeSweet GUI.
Stretch it with Adobe Audition (not free) or change its speed with Audacity (free).
Convert the modified WAV back to AC3 with BeSweet.
Remux with Muxman.

[Mugeb]

Stretch it with Adobe Audition (not free) or change its speed with Audacity (free).

How I do that with Audacity ? :confused:

Do you have a tutorial ?

Thanks.

[r0lZ]

No sorry. But that should be relatively simple. The difficult part is to determine how much the speed must be increased or decreased.

[Mugeb]

I've alrealdy tried but I've not found where is that option on the program. :confused:

[bigotti5]

I've alrealdy tried but I've not found where is that option on the program.

Mark the clip (Strg+A)
Effect - Change Tempo..
use Percent change slider or set the values manually...

[Mugeb]

Thanks, worked fine but I still have the decalage. :(

That's so frustrating.

Is there another way to fix this ?

Thanks in advance.

[r0lZ]

No.
But have you tried to add (or remove) a blank at the beginning?

[Mugeb]

The two audio tracks start at the same time, there's just one who finish sooner than the other.

There's a moment in the new edited video where the audio track is synchronized with video in the last half hour but it's only for 2 minutes approximately.

[r0lZ]

Well, we cannot guess the right thing to do without the audio files, especially if the original and the new audio files are different.

You could load both files in Audacity, and compare them to find when they differ, and why. Then, you must either modify the tempo globally, or insert or remove some parts of the new file so that all sounds are at the right place. It's not easy, but we cannot do it for you. :(