Deblocking.

[App_rone]

I have a really blocky video here.

https://i.imgur.com/wTuSGyW.png

This is only part of the video. The full version is over an hour.

I tried to use MSU Smart Deblocking, but it didn't work. I then tried to use the Avisynth deblock filter, but to no avail either.

Does anyone have any help?

[burfadel]

Deblocking works by effectively blurring block boundaries. Due to the nature of the blocking in that image, if it were deblocked it would be blurry instead. There are possible means to reduce this, but it won't look good. The most ideal way would probably be using f3kdb (latest version 2.0) with strong settings, then adding grain to luma and chroma with it, which will help mask the blocking.

[App_rone]

Deblocking works by effectively blurring block boundaries. Due to the nature of the blocking in that image, if it were deblocked it would be blurry instead. There are possible means to reduce this, but it won't look good. The most ideal way would probably be using f3kdb (latest version 2.0) with strong settings, then adding grain to luma and chroma with it, which will help mask the blocking.

But how do I use f3kdb...

[`Orum]

But how do I use f3kdb...

Here's the basic usage (http://f3kdb.readthedocs.io/en/latest/usage.html).

Sadly many of the good deblocking filters of old (e.g. DeBlock_QED) no longer work for various reasons, and there's a lot less incentive to write them now as modern footage uses modern codecs with in-loop deblocking. While I agree with burfadel that you need some debanding, it looks like you could probably use some deblocking in the clip as well.

[Motenai Yoda]

actually Manao+Fizick+tp7's deblock use h264 deblocking filter https://forum.doom9.org/showthread.php?t=169832

[ChaosKing]

Have you tried the amDCT deblocking filter for avs? https://forum.doom9.org/showthread.php?t=174433