Ripping DVD audio

[Malcohol]

Hi.

I'm trying to rip the soundtrack of "Interstella5555" off DVD. I've extracted the files using mpegdemux. They play fine on my GNU/Linux box but don't play under Rockbox.

While this might be a codec problem, my first thought is that I'm not ripping the files properly. In particular, I wasn't sure what codec they used, so I named the files .ac3. Would the filename extention effect Rockbox? How can I find out what codec they use?

I've ripped the audio from some other DVDs (e.g. "The Devil Rides Out") which worked fine.

Thanks,

Malcolm.

[Deano]

Are you sure the track is AC3 (ie Dolby) and not DTS? You should be able to check your DVD for this information (should be on the rear of the DVD case) on the encoding types of the audio track.

[Malcohol]

Are you sure the track is AC3 (ie Dolby) and not DTS? You should be able to check your DVD for this information (should be on the rear of the DVD case) on the encoding types of the audio track.

Aha! I checked on the internet and there are both Dolby and DTS soundtracks on the DVD. I guess I've ripped the wrong one. I'll try ripping other streams off the DVD and see whether it works.

Thanks!

Malcolm.

[keuleJ]

I'm trying to rip the soundtrack of "Interstella5555" off DVD. I've extracted the files using mpegdemux. They play fine on my GNU/Linux box but don't play under Rockbox....

Great Movie btw.

[Malcohol]

I guess I've ripped the wrong one. I'll try ripping other streams off the DVD and see whether it works.

Yep. I ripped one of the other streams, and it worked fine. Thanks for your
help.

Malcolm.

[Malcohol]

Yep. I ripped one of the other streams, and it worked fine. Thanks for your
help.

Clarification: I got the AC3 stream ripped from the first VOB of the main feature to work. I also got one big stream ripped from all the VOBs concatinated together to work.

Unfortunately, the streams ripped from the other VOBs, or VOBs containing individual chapters won't play.

Any suggestions? Perhaps some important header information is being missed.

Thanks,

Malcolm.

[linuxstb]

What does the "file" command tell you about the ripped AC3 files?

It's possible that your streams are starting mid-frame, meaning that the magic AC3 frame header which Rockbox uses to identify the file as AC3 isn't at the start of the file.

If this is the case, search the stream for the sequence "0b 77" and strip all bytes before that.

[Malcohol]

If this is the case, search the stream for the sequence "0b 77" and strip all bytes before that.

Yay! It worked. There all playing now. Thanks!

Malcolm.