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Uncompressed AVI problem
I am attempting to render the following clip as an uncompressed AVI:
720x480x32
29.97 fps
Upper field first
MPEG-2I definitely made sure that the project properties agree with the render properties. However, every time I render it, I can see the interlacing lines. If I render it as an NTSC DV AVI it looks fine. The problem only occurs when I try to render it uncompressed.
Now, maybe it is not necessary for me to render it as an uncompressed AVI, but I’d like to if possible, so if anyone can tell me why it isn’t working I would greatly appreciate it.
Thanks
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7 Replies
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You see the interlacing lines because you have it as
upper field first rendering to uncompressed.
Change it to lower field first or None
and you will see the difference.Steve Rhoden
(Cow Leader)
Film Maker
Filmex Creative Media.
1-876-832-4956
https://filmex-creative-media.blogspot.com/ -
I tried both of your suggestions and the interlacing is still visible.
The field order of the original video clip is “upper field first” so it seems that whatever I render it as should be the same…right?
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OK…
By the way, why are you rendering it out to uncompressed?Steve Rhoden
(Cow Leader)
Film Maker
Filmex Creative Media.
1-876-832-4956
https://filmex-creative-media.blogspot.com/ -
I have a number of different projects that I would like to string together to make one movie (a series of commercials). I figured the easiest way to do it would be to render each project as a movie clip, then place all of those movie clips onto one timeline and render it.
Many of these individual projects use source material that is compressed in various ways, and I am worried that if I render the projects in compressed formats, then take all of those compressed files and string them together to make one long compressed file, I might lose quality in all of the compressions. I thought that rendering each clip as an uncompressed AVI would reduce any loss of quality before I get to the final combined project.
Did I make any sense?
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Yep….You made sense.
Try the quicktime uncompressed format then, and see
if the problem is still there.Steve Rhoden
(Cow Leader)
Film Maker
Filmex Creative Media.
1-876-832-4956
https://filmex-creative-media.blogspot.com/ -
Well, I am not 100% sure I picked the right option for creating an uncompressed quicktime clip, but if I did, then it didn’t work. When I hit the render button, suddenly Vegas stops working and shuts down.
Still don’t understand why rendering the clip as an NTSC DV AVI looks fine, but rendering it uncompressed creates a movie which has sections that look like they have been broken up into a bunch of horizontal lines.
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Understand, your original file is
720x480x32
29.97 fps
Upper field first
MPEG-2Any render will cause some slight quality loss, even to uncompressed avi. Vegas can combine some files together without recompression, as long as they have no effects applied to them. If you add the mpeg-2 files together on the timeline and render to the same exact mpeg-2 format, you wil see “No recompresion on the preview screen, and it’ll fly through the process. If this works for you, there will be NO quality loss.
DV AVI is a good format, better than your mpeg so if you want to edit with effects, that is a good format to use.
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