Video Capture, Editing and Processing > Avisynth Usage

Avisynth - bitrate plugin

(1/3) > >>

Dogway:
There exists any plugin for avisynth to retrieve bitrate from every frame, or at least for every second of the source?

J_Darnley:
You don't need a plugin to calculate that.  Raw video frames have a size of: width * height * bits per pixel.  E.g, 720x576 yv12 frames: 720 * 576 * 12 =  4976640 bits

If you want the size of source frames then you will either have to find a plugin which exposes that information in someway to avisynth (I can't think of any, but I recall ffmpegsource exposing frame types and some other info, so check that) or you'll have to write one.

Dogway:
Yes, that's what I was wondering just wanted some confirmation because it sounded too easy for no one ever came up for the idea to make the plugin.  More likely if any ffmpegsource would have, but it seems it doesn't expose that kind of information.

MPH-HC when statitics enabled shows some data on buffer, bitrate just shows a hyphen.
Don't know what application I can use to see some relations between content and bitrate.

Groucho2004:

--- Quote from: Dogway on April 13, 2012, 01:17:55 AM ---Don't know what application I can use to see some relations between content and bitrate.
--- End quote ---
What do you mean by "content"?

Dogway:
Image complexity.
I have seen some applications that make a graph and all, but that doesn't say much if you can't relate bitrate to content.
This occurred to me today when I encoded with zones parameters and wanted to verify, but beyond that purpose is for x264 tuning and learning.

Navigation

[0] Message Index

[#] Next page