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-   -   Why Mux With DVD? (http://www.digitalfaq.com/archives/encode/13953-mux-dvd.html)

mjclark 11-14-2005 10:56 AM

Why Mux With DVD?
 
Hi!I'm finding this forum to be invaluable.Thanks for all your help so far.
When encoding from DVD,it is impressed upon me again and again(and again) to use DVD2AVI,seperate video and audio streams and then mux at the end of encoding.It is suggested very strongly that I DO NOT just rip the DVD to DivX,then use system video+audio setting in TMPGEnc (hence no final muxing).
Why is this?-I'm sure there are very good reasons but,as yet, I don't know what they are...

gamma 11-14-2005 11:05 AM

Re: Why Mux With DVD?
 
Quote:

Originally Posted by mjclark
Hi!I'm finding this forum to be invaluable.Thanks for all your help so far.
When encoding from DVD,it is impressed upon me again and again(and again) to use DVD2AVI,seperate video and audio streams and then mux at the end of encoding.It is suggested very strongly that I DO NOT just rip the DVD to DivX,then use system video+audio setting in TMPGEnc (hence no final muxing).
Why is this?-I'm sure there are very good reasons but,as yet, I don't know what they are...

hi mjclark,

it's really very simple. When you seperate the streams, you can use the best programs for each stream. For example, tmpgenc is great with video, but bad with mp2 audio. When encoding audio with for example besweet, you get the best quality in video and audio.

So, we want quality. Quality starts with the source, the better the source, the better is your end result. That's why we work with original DVD's: it's the best source. When you encode to DivX, you will loose A LOT quality, because the DVD is heavily compressed by the divx codec. You can easily see the difference between DVD and DivX, divx is more "soft" and has much less details than dvd.

So, use a DVD as your source!

mjclark 11-14-2005 12:36 PM

Thanks!That's a very clear and comprehensive answer to my question...

rds_correia 11-14-2005 04:01 PM

Correction: we only use DVD as a source!
Well, actually we also use TV captures in MJPEG or HuffYUV :lol:.
But you won't find DivX -> KVCD/KDVD help in this forum ;-).
DivX/XviD/MPEG-4 are cool but they are not the real source :roll:.
In 90% of the cases the real source is DVD.
So we should always use the best source with the best tool(s) to achieve the best encoding result ;-).
Cheers


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