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Question about quality

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Joao SouzaQuestion about quality
by on Sep 3, 2012 at 5:46:47 pm

Guys we know that keep copying a cd/dvd won't reduce the level of quality cause it's digital but what happens in Vegas if I render a clip, import it and rend it again with the same settings and again and again...?
It's digital but does importing/rendering process reduce the level of quality ?

We have so much time and so little to do! / Willy Wonka


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 6:07:56 pm

It all depends on the format you're rendering to.
A lot of folks prefer to use lossless formats but they can get rather large in size :(
I work in MXF and will go down one or two generations but no more than that.


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Steve RhodenRe: Question about quality
by on Sep 3, 2012 at 7:47:29 pm

Yes, if you render a clip again and again and again and again,
even to the very same format it reduces (degrades) the quality
over time.

Steve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
1-876-832-4956


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 7:50:26 pm

[Steve Rhoden] "Yes, if you render a clip again and again and again and again, even to the very same format it reduces (degrades)the quality after each pass."


With the exception of the original DV format.
One Vegas user did a test a long time ago and he stopped after 100 generations.
No degradation whatsoever!!


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Steve RhodenRe: Question about quality
by on Sep 3, 2012 at 7:58:59 pm

Really?....Interesting.

Steve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
1-876-832-4956


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Stephen MannRe: Question about quality
by on Sep 5, 2012 at 3:09:10 am

The original DV format is probably the only rendered format we have in Vegas - everything else is encoded, and except for uncompressed encoding, the process ALWAYS throws out what it thinks is redundant data. This is why subsequent encodes degrade with each generation, including the first.

Steve Mann
MannMade Digital Video
http://www.mmdv.com


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Joao SouzaRe: Question about quality
by on Sep 3, 2012 at 8:39:48 pm

But what's DV format?
Can't see it in templates list.

We have so much time and so little to do! / Willy Wonka


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 8:44:28 pm

NTSC (or PAL) DV-AVI
Limited to SD resolution though.


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Joao SouzaRe: Question about quality
by on Sep 3, 2012 at 8:47:59 pm

Oh I see.
Thanks Mike ;)

BTW why when I import an AVI file, it comes with no audio?
What am I missing here?

We have so much time and so little to do! / Willy Wonka


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 8:51:11 pm

You're welcome Joao!!


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Joao SouzaRe: Question about quality
by on Sep 3, 2012 at 9:16:55 pm

Hey you missed my other noob question =

Why when I import an AVI file it doesn't come with audio?
What am I missing?

We have so much time and so little to do! / Willy Wonka


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 9:22:28 pm

[Joao Souza] "Hey you missed my other noob question ="

Sorry but I missed that post/question :)


"Why when I import an AVI file it doesn't come with audio?
What am I missing?"

AVI is just a wrapper for all kinds of files.
Run it through MediaInfo (it's free and a great app to have in your toolkit) and let us know what it says.
http://mediainfo.sourceforge.net/en


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Joao SouzaRe: Question about quality
by on Sep 3, 2012 at 9:39:06 pm

I tried to download some youtube videos in AVI format(just chose AVI).When I tried to import, it had no audio.

We have so much time and so little to do! / Willy Wonka


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 9:40:31 pm

Without knowing what kind of AVI it was, it's impossible to offer any suggestions.
I always choose mp4 for any YouTube downloads I do and I have no problems playing them or bringing them into Vegas (Pro 10 in my case).


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Joao SouzaRe: Question about quality
by on Sep 3, 2012 at 9:45:55 pm

Yep I stopped trying AVI but I just wanted to know if I was doing something wrong.
youtube downloader gives an AVI option, I chose it and it never came with audio hahaha

We have so much time and so little to do! / Willy Wonka


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Mike KujbidaRe: Question about quality
by on Sep 3, 2012 at 9:56:08 pm

Odds are that you need a specific codec to be able to play the file which is why I asked what MediaInfo said about it.
BTW, never install a codec pack as they have been known to replace the good codecs in Vegas with inferior ones.


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Joao SouzaRe: Question about quality
by on Sep 3, 2012 at 10:06:13 pm

Ok thanks again.

We have so much time and so little to do! / Willy Wonka


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