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Avi DV mehrmals speichern...Qualität?

Avi DV store several times ... quality?



Frage von Christian:
September 2005

Hello,

very simple question: I want to invite a finished video in AviDV format again in Premiere to rauszuschneiden something. When I edit this video again after a AviDV export in Premiere, the quality is bad then?

For jpeg images is the example the case that after several Overstore due to the re-compression, the quality is worse. Is AviDV synonymous with that?

Regards
Christian



Antwort von LuFaHa:

As far as I know, renders Premiere (of course vorausgestzt the codec remains the same, what with you is indeed the case), only the changes. If you Prem. Per use it, you are indeed a red or (if you have the preview rowed green line) displayed on the video tracks. Only there is rendered. The rest is simply transferred.

Note: This only applies to IT projects, in "Video for Windows" can be instead of the DV codecs synonymous to each other or "lossless terminated.



Antwort von Christian:

So when the export settings I've made to Microsoft DV AVI, which I use always. I have Premiere 6.02.
But he still would render times or anything? Even if it's fix of walks on the rendering time ...

Greeting
Christian








Antwort von LuFaHa:

With Premiere 6:02 I do not know my way and I render normal avi's not even (I keep the rohdaten and render almost equal to mpeg2 for dvd). But as I have understood my Premiere (per 1.5), is in the avi renderer again not every building "compressed".
The DV codec, so use a spatial compression, MPEG uses a time while. When DV is so similar to each picture as a JPEG picture compression.
Compressed, so I am now assumed that when rendering a movie, only the new place will be that have been changed (effects, dissolves, title ...) the rest would simply be incorporated in the appropriate codec (unchanged DV footage on the timeline -- -> identical) to the corresponding parts in the new film.
Now I've read in a textbook that synonymous when rendered in the same codec to be losses. * curious *

White is perhaps someone with what application (Virtual Dub?) It possible to use a DV-cut film (but not edit), without causing losses in Comparison to the rendered movie. Or is it yet with Premiere?
The question is really just how you can snip to pieces a movie to the individual pieces together again, without rendering "to have" simply because the file parts will be recombined.



Antwort von Wiro:

Hello,
there is only one and only question is whether in the Premiere timeline, the aforementioned red line or not. Does it not appear (which is likely to be the case), then there is no further loss.
Greeting Wiro



Antwort von LuFaHa:

THX



Antwort von wolfgang:

So should more accurately say:

- Only if something is rausgeschnitten, it should not change. Simply because the parts are just copied.

- If new transitions, titles added, etc., changing jobs s.diesesen quality, because there has to be re-rendered. Depending on the material but no one would see. Where it is not inconceivable, it is about the quality of the codecs to be applied by DV. And yet the AP 6.x uses the Microsoft DV codec has been compared here, not necessarily the best cards - such as with the Canopus DV codec. But it really depends greatly on the material - is the most likely option, that hardly any difference or not at all recognize.



Antwort von Christian:

got invited to the video ma premiere. Actually, I just want the front to cut away what (25 Sec. Schwarbild), which was necessary for a Competition, which now is only annoying.
The aforementioned red line appears above the timeline, however, over the entire length of the movie ...
will probably re-rendered it? Well, if the quality loss is negligible, that is okay.

Greeting
Christian



Antwort von GhostDog:

"Christian" wrote:
got invited to the video ma premiere. Actually, I just want the front to cut away what (25 Sec. Schwarbild), which was necessary for a Competition, which now is only annoying.
The aforementioned red line appears above the timeline, however, over the entire length of the movie ...
will probably re-rendered it? Well, if the quality loss is negligible, that is okay.


As already Wiro wrote: Only if the red line is * not * appear ...
When they appear, then you've got something wrong. If you are the DV-AVI importierst, cutting away the black part at the beginning and then reduced this film with the correct DV-AVI exportierst settings, it will be rendered absolutely nothing new - s.der apparent lack of red line. Accordingly, you should check your project settings.

Greeting
Holger



Antwort von Christian:

I s.den export settings but nothing changed! The red line appears even matter if I drag the clip directly into the timeline, therefore, still have to cut away without anything ...

Could it be that export and import settings do not match and so is the red line?

MfG
Christian



Antwort von LuFaHa:

Unfortunately, I can speak only for Premiere Pro:

No, it is not s.den export settings, but s.den preview settings.
This setting before you take in the "Project Settings" in the Preview pane. But if you as a Project "DV" (and not "Video for Windows") have selected, you can obviously change anything here. This would mean that your video is not available in standard DV codec.
Control project setting as simple as saying "Video for Windows" and defines as the codec for the preview, the codec, which has the video itself.

PS: I have no idea whether to AP 6:02 is the same ...



Antwort von Wiro:

"Christian" wrote:
. . . that export and import settings do not match. . .

This is certainly the reason, otherwise no red line would be available.
AP6 a long time ago for me, but there was under Project Settings, look up way to know if any red entries are present. Look for.

Otherwise:
You have destined for the Competition but the movie on DV tape played. Simply need a new capture and use the preset for AP DV (PAL) 48 kHz.
Greeting Wiro








Antwort von Christian:

Werd preferences compare times and hope that it works.
The film, unfortunately I can not play on tape's back, because my camera has only one output. At the next cam I'll definitely make sure that synonymous, an input is available to play back the data.
Competition for the film so I've burned to DVD.

MfG
Christian




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