Well xvid didn't have crf (constant rate factor), it only had cq (constant quantizer) which is not the same. x264's 2-Pass works exactly as it should, if it didn't then CRF wouldn't work either since CRF is based off the same principal as 2-Pass - that is it keeps constant quality. CQ does not... it aims to keep the quantizers to a constant level, even when a scene doesn't need it, therefore 2-Pass will give you a better quality output at the same size as CQ-based encode.
Post #781524
- Author
- RU.08
- Parent topic
- Info wanted: General Encoding Question from Projects - Scripters opinions wanted.
- Link to post in topic
- https://originaltrilogy.com/post/id/781524/action/topic#781524
- Date created
- 17-Jul-2015, 10:03 PM