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Old 12th August 2010, 11:28   #1  |  Link
vineet
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Join Date: Jul 2010
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Severe banding in videos

Hey,

I came across this particular video my friend had encoded as MJPEG, when I try to encode it using x264, it gets severe banding in 40 frames in middle of the video and colors totally blow out.Same is true with ffmpeg. I inquired further and understood that he had compiled some png images from different sources. Now when I try to make some png's from different encoders into a movie with ffmpeg, i get the same artifacts. Any clues how to overcome this?
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Old 12th August 2010, 11:54   #2  |  Link
nm
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Quote:
Originally Posted by vineet View Post
Now when I try to make some png's from different encoders into a movie with ffmpeg, i get the same artifacts. Any clues how to overcome this?
Try using a batch image encoder to convert the images to compatible PNG files first. This is a lossless process if no scaling/cropping is required. ImageMagick's convert tool is one possible alternative.

If you'd like to get the potential ffmpeg bug fixed, post your image files (as a package) and the command-line that you are using so we can replicate the issue.

Last edited by nm; 12th August 2010 at 11:56.
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Old 12th August 2010, 14:16   #3  |  Link
poisondeathray
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I'm guessing there is a levels issues with your mjpeg decoder and the actual content. Can you post a sample? Try converting to PC or TV levels
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