Compression/analyze tool for crf/bitrate value?

[crystalfunky]

Hey guys,
I'm looking for a way to somehow find out
what bitrate I get for a certain crf value of a specific movie.

For example I choose crf 20 and I get a bitrate for that specific movie with around 2000 kb/s.

How can I find that out, without encoding the whole movie?

[Forteen88]

Grainy encodes at same CRF as clean encodes gets higher bitrate.
It also depends on the resolution.

[crystalfunky]

Is the Compressibility Check doing this?
It seems that it uses crf 18 for testing.

[RanmaCanada]

Originally Posted by crystalfunky

Hey guys,
I'm looking for a way to somehow find out
what bitrate I get for a certain crf value of a specific movie.

For example I choose crf 20 and I get a bitrate for that specific movie with around 2000 kb/s.

How can I find that out, without encoding the whole movie?

You can't because different scenes need different bitrates. If you want a certain bitrate, then encode in that certain bitrate as variable, and the encoder will give extra bitrate to the scenes that need it, and "steal" bitrate from those that do not.

[stax76]

It seems that it uses crf 18 for testing.

In case you are referring to staxrip, the value can be customized, the Comp. Check setting can be found by entering 'check' in the search field, the search field is located in the bottom left corner of the video encoder dialog.

StaxRip uses a x265 mod by Patman which shows the estimated file size in the status line.

There is avs filter profile in the misc section with SelectRangeEvery(1500,50)

In the staxrip thread a test tool for quality mode was requested, it was never requested on the tracker I think.