Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
vp9 [2023/04/08 21:55] – [ffmpeg] beandogvp9 [2023/04/20 03:54] (current) – [ffmpeg] beandog
Line 13: Line 13:
  
 By default, ''vpxenc'' will use 2-pass method for encoding. By default, ''vpxenc'' will use 2-pass method for encoding.
- 
-As far as I can tell, there's no default when using CQ mode. I don't know what variables it's using for default when doing a 1-pass encode. 
  
 To gain a CRF-type result, use ''--end-usage=cq --cq-level=<arg>'' format, and then a 1-pass encode ''--passes=1'' Using this, ''vpxenc'' uses a default CQ of 32. To gain a CRF-type result, use ''--end-usage=cq --cq-level=<arg>'' format, and then a 1-pass encode ''--passes=1'' Using this, ''vpxenc'' uses a default CQ of 32.
 +
 +I get different encoding times on multiple runs, even though it's producing the exact same files, so watch out for that.
  
  
Line 23: Line 23:
 By default, HandBrake uses a CQ of 22. By default, HandBrake uses a CQ of 22.
  
-HandBrake willy only use 2-passes if a bitrate is set as well.+HandBrake will only use 2-passes if a bitrate is set as well.
  
 ==== ffmpeg ==== ==== ffmpeg ====
  
-You can use ''ffmpeg'' to get a deep level of output to see what it's doing:+You can use ''ffmpeg'' to get a deep level of output to see what it's doing, it uses the default CRF of 32:
  
 <code> <code>
-ffmpeg -i sample.y4m -vcodec libvpx-vp9 sample.webm+ffmpeg -loglevel debug -i sample.y4m -vcodec libvpx-vp9 sample.webm
 </code> </code>
  

Trace:

Navigation