Xvid-video has strange error (green flickering string)

Drum Eagle · Post by **Drum Eagle** » Fri Mar 21, 2008 8:52 pm

Okay, I followed the guides very carefully, just to let you know.

At the very final step, I encoded my AMV with VirtualDubMod to a nice Xvid-file.

Now there is this problem:
At the bottom right corner of the vid, there is this strange, flickering, green string and I dont know how to get rid of it! I remember this thing in other *.avi-videos.

Here is a pic I took with my camera:

Do I have to change some settings in the Xvid encoder? I dont know.

By the way, my x264-file has got it too!

My source-file is an uncompressed avi(my AMV) I produced with Premiere and the green, flickering string is only in the xvid-video!

JaddziaDax · Post by **JaddziaDax** » Fri Mar 21, 2008 9:20 pm

sounds like a problem with your avisynth script?

post your script?

Drum Eagle · Post by **Drum Eagle** » Fri Mar 21, 2008 9:24 pm

#ASYNTHER AVISource
AVISource("D:\elfenherz.avs")
ConvertToYV12()
Crop(2,74,-0,-72)
LanczosResize(720, 400)

I think the script is very simple. Maybe its the "ConvertToYV12()" line?

Drum Eagle · Post by **Drum Eagle** » Fri Mar 21, 2008 9:26 pm

what? no edit-button??
----
I noticed that my avs-file redirects to another. I will clean this up.

Kariudo · Post by **Kariudo** » Fri Mar 21, 2008 9:26 pm

it may be a problem with avisynth. Similar things have happened to people with avisynth 2.5.7 (though I think it was with huffyuv and lagarith files)
uninstalling avisynth and re-installing v2.5.6 fixes the problem

just to be sure, if you're using premiere pro...the export sucks. Exporting from pro using anything other than uncompressed will give you junk in frames like that randomly. (Though some people here are lucky enough to not have run into this problem)

Drum Eagle · Post by **Drum Eagle** » Fri Mar 21, 2008 9:30 pm

I used Premiere Pro 1.5 and I only do uncompressed files.

Drum Eagle · Post by **Drum Eagle** » Fri Mar 21, 2008 9:47 pm

Kariudo wrote: uninstalling avisynth and re-installing v2.5.6 fixes the problem

done and I made a test-avi: the string is still there.

Emotive · Post by **Emotive** » Fri Mar 21, 2008 9:56 pm

Is the line there in the exported file or does it only appear after converting it? Try scrolling through the video in Vdub (be sure to extend the screen so you actually see the whole picture) or watching it with KMP (because it can play uncompressed files without lag) and see that.
If the line is there to begin with, try re-exporting? Be sure you're exporting as uncompressed and not lagarith or hyffyuv, because as Kariudo mentioned above exporting like this usually brings problems of this sort.

Drum Eagle · Post by **Drum Eagle** » Fri Mar 21, 2008 10:01 pm

the uncompressed file is absolutely clean! I does only appear in the xvid.
----

I removed the
Crop(2,74,-0,-72)
LanczosResize(720, 400)
-lines from my synth-script and NOW the green string is gone!

Drum Eagle · Post by **Drum Eagle** » Sat Mar 22, 2008 7:59 am

I think I found the problem:

I had the wrong(?) resize values because I didnt use the resize-calculator right. I went back to it and calculated again and became this new values:
LanczosResize(720, 416)

now my Xvid-file looksperfectly awesome!

nevertheless, thank you for your help!!!