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strange, horizontal color noise when adding transition

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Tobin Bell
strange, horizontal color noise when adding transition
on Oct 30, 2014 at 5:06:44 pm

Hey there,

I realized if I add some resource-consuming transitions it will make some strange looking color noises to most of the frames not only when rendering but I can see it on the timeline too. Sometimes they just appear from nowhere too, when no transitions added: At some untouched part of the video suddenly some horizontal colored lines appear to random frames. but it gets very dense where any res--consuming effect or transition gets added.

The random ones vanish after closing and restarting vegas but the ones with the transitions and effects are permanent.

My GPU acceleration is turned off. Any idea?


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Tobin Bell
Re: strange, horizontal color noise when adding transition
on Oct 30, 2014 at 6:08:06 pm
Last Edited By Tobin Bell on Oct 30, 2014 at 6:08:34 pm

this is a short sample of the noise under the transition I'm talking about.

8158_smv01.mp4.zip

Anyone have a clue what causes this? I just dragged a new video file to timeline and in the first 10 seconds there are 2 of those color lines. I didn't even touch it yet. I first thought it's just a preview bug but its in the rendering aswell.


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John Rofrano
Re: strange, horizontal color noise when adding transition
on Oct 31, 2014 at 2:15:06 am

What codec and file type does your video use? If it's x264vfw, DivX, or Xvid, in an AVI file you have identified the problem. Vegas doesn't work well editing these formats.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Steve Rhoden
Re: strange, horizontal color noise when adding transition
on Oct 31, 2014 at 6:06:59 am
Last Edited By Steve Rhoden on Oct 31, 2014 at 6:07:26 am

Seems Vegas is actually having an issue with the format of
the files you are putting on the timeline. What video format
is this? and from what source?

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:
http://www.facebook.com/FilmexCreativeMedia


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Tobin Bell
Re: strange, horizontal color noise when adding transition
on Nov 1, 2014 at 10:36:26 am

It's an avi (FICV codec) from Mirillis' Action! capturing tool. I used Fraps to capture clips from my PC before but with the same issue. However this does not happen every time sometimes it's ok even with the same transition effects. I don't get it really. One thing I noticed if I overclock my CPU in the bios the color line flashes become more dense.

Also realized if I change the pixel format from 8 bit to 32 full range in project settings then slightly less flashes appear. But the amount is not static at all.

If the codec and avi format is the key to this issue how can I solve this? I mean maybe re-encoding the clips to a format that Vegas prefers? I also want to keep it's quality level.


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John Rofrano
Re: strange, horizontal color noise when adding transition
on Nov 1, 2014 at 11:16:00 am

Vegas Pro obviously has a problem with this codec. I would re-encode as MJPEG using a tool like AviDemux 2.5.



~jr

http://www.johnrofrano.com
http://www.vasst.com



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Tobin Bell
Re: strange, horizontal color noise when adding transition
on Nov 1, 2014 at 12:12:13 pm

JPEG is quite a lossy codec isn't it? Will I lose more of the quality than the original then?

On the other hand, is there an option to export the complete project so I could re-open it in Premiere or any other editing tool and do the encoding work there so they may have better support with the codec to eliminate the color flashes? If so is there an option to export the presets and custom transition effects attached to the project?


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John Rofrano
Re: strange, horizontal color noise when adding transition
on Nov 1, 2014 at 1:03:26 pm

[Tobin Bell] "JPEG is quite a lossy codec isn't it? Will I lose more of the quality than the original then?"
It's Motion-JPEG not JPEG and if you can see the loss after just one render I'd be very surprised.
[Tobin Bell] "is there an option to export the complete project so I could re-open it in Premiere or any other editing tool and do the encoding work there so they may have better support with the codec to eliminate the color flashes? "
Newer versions of Vegas Pro allow you to export to Premiere but you will loose all of your FX. It's pretty much a basic cuts and transitions only export.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Tobin Bell
Re: strange, horizontal color noise when adding transition
on Nov 3, 2014 at 6:56:20 pm

Well, whatever I do I can't get Avidemux to recognize the FICV codec. Reinstalled all things multiple times, tried different codec packs, and so on and so on without success.

However I managed to make the conversion with MediaCoder (http://www.mediacoderhq.com/) but even with the highest possible settings for MJPG (Quality:100%) the outcome was very bad quality compared to the FICV. The FICV is a medium quality itself by originally but the MJPG came from the MediaCoder was waay lower image quality and the file size of the sample I converted is also reduced from 1100MB to 200MB.

Is there any alternative to the MJPG that keeps the original quality of the ficv so I can FX in Vegas with full support?


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John Rofrano
Re: strange, horizontal color noise when adding transition
on Nov 4, 2014 at 11:59:55 am

You can use high bitrate AVC/H.264 MP4 to encode the files. They won't edit as easily but they should work. The key to quality is bitrate. You need to keep the bitrate high to keep the quality up.

~jr

http://www.johnrofrano.com
http://www.vasst.com



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Steve Rhoden
Re: strange, horizontal color noise when adding transition
on Nov 6, 2014 at 7:27:08 pm

That's a problematic Codec right there!...

Steve Rhoden (Cow Leader)
Film Maker & VFX Artist.
Owner of Filmex Creative Media.
Samples of my Work and Company can be seen here:
http://www.facebook.com/FilmexCreativeMedia


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