I ripped my blu ray tv shows to pc so i dont have to handle them as much.
they are black & white and 4:4 Aspect Ratio
each episode is 30min 3.5gb in raw form from blu ray
some results are 1.75gb and some are as low as 600mb
the average bitrates vary from each one after reencoding
question is:
using Constant quality is supposed to be better then average bitrate.
why do some of these videos use a lot less bitrate then others?
example:
Video #1 before = 3.52GB 20mbps average & 36mbps peak
Video #1 After = 542MB 2.8mbps average & 13mbps pake
Video #2 before = 3.54GB 20mbps average & 36mbps peak
Video #2 After = 1.24GB 6.7mbps average & 16.5mbps peak
settings:
Constant Quality 20RF
encoder preset veryslow
encoder tune Film
Encoder Profile High
Encoder Level 4.1
I want the best quality out of these 1080p episodes
I have DVD episodes in a larger file sizes then some of these...
Av Bit Rate v Constant Quality
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- Veteran User
- Posts: 4859
- Joined: Wed May 04, 2011 11:06 pm
Re: Av Bit Rate v Constant Quality
Could you please post your HB logs, instructions can be found here:
https://handbrake.fr/docs/en/latest/hel ... y-log.html
https://handbrake.fr/docs/en/latest/hel ... y-log.html
- JohnAStebbins
- HandBrake Team
- Posts: 5726
- Joined: Sat Feb 09, 2008 7:21 pm
Re: Av Bit Rate v Constant Quality
A number of things affect bitrate when using constant quality encoding including motion, video noise, and scene detail. The larger encodes likely had more of one of those.
Given that the video is B&W, I'm guessing these are older TV shows. They probably have a significant amount of noise, so you might want to try adding a denoise filter like NLMeans.
Given that the video is B&W, I'm guessing these are older TV shows. They probably have a significant amount of noise, so you might want to try adding a denoise filter like NLMeans.