Severe banding in videos

[vineet]

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?

[nm]

Originally Posted by vineet

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.

[poisondeathray]

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