Can I have AC3 and MP2 on the same disc?

[boing]

If I want to burn either an SVCD/VCD with multiple tracks on it and some of the tracks are comprised of MPEG video/mp2 audio and some are MPEG video/AC3 audio will it work?

Or is it not allowed in the same way as not being able to have differing aspect ratios on the same disc?

I need to know so I dont add to the old coaster collection lol

[Baldrick]

svcd and vcd does not support ac3.

[boing]

svcd and vcd does not support ac3.

Christ, cheers for the promt reply, saved me a disc

So if I cant use AC3 (I have an mpeg1 encoded file that has really crap mp2 audio so I demuxed it and encoded the sound to ac3 which improved things, but now that is buggered lol) is there an alternative to the crappy mp2 audio stream I have currently?

Cna I use WAV or something? if so which utility would do this?

In short what else can I multiplex with the mpeg video stream?

Cheers

[ZippyP.]

svcd and vcd does not support ac3.

...and only supports MP2.

@ boing
I cannot understand why your file sounds better when converted from MP2 to AC3, it really does not make any sense. If the source MP2 is crappy then the AC3 cannot be any better unless you have applied some sort of filtering.

There really is no problem with MP2 sound. It can be quite good quality if the bitrate is high enough, say 192 kbps or more, much like MP3.

[boing]

svcd and vcd does not support ac3.

...and only supports MP2.

@ boing
I cannot understand why your file sounds better when converted from MP2 to AC3, it really does not make any sense. If the source MP2 is crappy then the AC3 cannot be any better unless you have applied some sort of filtering.

There really is no problem with MP2 sound. It can be quite good quality if the bitrate is high enough, say 192 kbps or more, much like MP3.

The original MP2 in this film is a VERY piss poor quality, I havent had cause to bitch about MP2 before for the reasons you point out but with this film being low quality to start with it has a highly 'treble leek' type sound and sounds tinny, not to mention that even before encoding it is [as said] crap quality

After conversion to AC3 some of the tinny sound is reduced noticably, also some of the perceived quality improvement may simply be the quieter sound of the ac3 in coupled with the 'tinny' reduction

Either way [whether it is simply because it is quieter or not ] it does 'sound' better

If it is simply a case of it sounding better due to the lower ac3 volume could you guys tell me how to alte, r the encoding audio volume?, is this possible?, the tinny, trebly type audio really is not good at this moment and aything [even just volume reduction] would be welcome

Cheers again

[mats.hogberg]

This hit me too - reencoding audio can never improve it. Probably something in the AC3 encoding left the "bad parts" from the audio out.
I suggest you decode mp2 to wav, load it up in Goldwave or other audio editor, play around with the filters available, and see if you can make any improvements. Or else, decode the AC3 back to wav, then back to mp2 again.

/Mats