Still looking for a audio in VOB editing solution

[Jimmykicker]

I am still searching for a way to edit only the audio portion of a VOB file without demuxing. Still haven't found out if this is even possible...

[BJ_M]

no -- its not

[Jimmykicker]

Hmmm...well that was a simple answer...I am really looking to keep 100% quality on Dolby Digital and DTS tracks after demuxing and remuxing -- just haven't found a sure way to do that yet -- some methods are close, but not right on...

[BJ_M]

-- you can't , they are lossy formats so ANY decoding and re-encoding after editing will result in some quality loss -- a lot more with ac3 ..... there a couple ac3 spliters - and only one true ac3 editor (which doesnt re-encode) , its part of the vitec dvd toolbox and no longer sold it appears ..

[Jimmykicker]

That doesn't make a whole lot of sense to me -- I mean, how do they get that quality in there in the first place if you supposedly can't keep it -- I'm sure it costs a lot of money, but it has to be possible in some way...

[BJ_M]

well we use the orig. source files -- thats how we keep the quality in .. we dont edit compressed audio files ever ...

[jbenj01]

So BJ_M, are you saying that when I backup a DVD, i.e., demuxing the audio and video, re-encode video only and remux, that I'm 'losing' some degree of audio quality (even though I've not edited/re-encoded audio)??

[BJ_M]

So BJ_M, are you saying that when I backup a DVD, i.e., demuxing the audio and video, re-encode video only and remux, that I'm 'losing' some degree of audio quality (even though I've not edited/re-encoded audio)??

i never said that .. i was replying to first question

......for a way to edit only the audio portion of a VOB

[Cornucopia]

What BJ_M was saying was that "if you really want to maintain the quality" but you want to edit a program, you should edit BEFORE you do any encoding. Since most(?guess) of what he works with is the original source files (Uncompressed/MJPEG/DV video and LPCM wav/aiff audio) that maintains the best quality.

Obviously, if you're editing from a compressed (which here means DVD) source, if you do any modification besides cuts only (and even then you have to do it at the right spot and have the right tools) then there's going to be degradation.

Scott

[Jimmykicker]

OK, seems to make sense now...guess I'll just have to wait for further developments that allow you to edit audio and video streams separatly instead of as a VOB (which I edit alot)...I did come across a program awhile ago called Moviemask Designer which allow me to sort-of do all that I want to there, but (of course) you have to play it on their software player...not a bad program, but too bad it doesn't modify the way you need in order to burn and play on any player...

[muskgrave]

i suppose it's just lik audio editing/mastering of commercial albums..the quality of the product they get far exceeds cd standards and is edited in that high "resolution" untill at the very end it gets downsampled to cd specifications. If you record at CD-spec and edit/master/burn there it just won't sound as good.

dlv