"Jagged Lines" ?

[Abyssal]

By request I've splitted up my original thread with multiple questions into one thread for every one. :P


So anyway, here is one of my issues I've come across when encoding anime and is mostly visible when using a low bitrate/high crf rate but it can sometimes be visible with placebo encoding.

Here is some pretty bad example pics but I will try to find some better when I have time.

Raw BDMV:
http://tpspic.me/i/xZBvh.png

Encode:
http://tpspic.me/i/CAj3V.png

It is mostly visible on the white line to the right.

This is a zoomed in cutout of a screenshot of someones hair but it can sometimes be visible on clothes and pretty much any other lines as well but I tend to see it more often on people's hair since they tend to move their head quite a bit and it is during motion it is the most visible.

But as you can see, on the lines in the encode you can see that they are somewhat jagged - I'm not sure if this can be called aliasing but whatever it is, what is usually the best way to handle this?


I do have noticed that some sharpeners like LSFmod can reduce some of this and if I increase the strength it becomes over-sharpened and introduces artifacts.

[Guest]

Please provide an unprocessed source sample and describe your encoding process, so we may determine the root cause of the problem.

This may be simply Gibbs (mosquito) noise. Try using a higher bitrate for your encode.

Generally, we can help you much better with video source samples than with screenshots.

[Bloax]

Looks like deblocked blocking (H.264?) to me though.