[HELP] how to using x265 in Hybrid correctly?

[ssdde]

really?

yes, compare them at the same size, if you don't believe me.

never use the 2pass, only 1-pass.

2pass is needed when you aim for a specific file size otherwise 1pass constant rate factor is to be recommended.

Cu Selur

sorry, i can't agree, here is my test for the two mode, one is average bitrate with 6345K, another is constant rate factor with 15, file size little difference, and the picture quality is almost the same:
https://c-t.work/s/97ed3100f47d49


here is the original file for test:
https://c-t.work/s/940d855966224c

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great, thank you , so useful! but when to use Average bitrate mode to encode?

Constant rate is the only mode that you need to use. It just adjusts variable bitrate according to selected quality. Note that quality scale is very non linear. Quality within 20-19 will provide ok compression and small file sizes. 18-14 is near Blu Ray like quality i guess. Quality 10-2 is ok as intermediate or editing format. In addition min and max bitrate is limited by selected Profile Level.
Also you can limit Buffer size and Max fillrate in "Rate control" tab. For legacy devices and and Blu Ray players compatibility it is recommended to set Buffer size 30000 and Max fillrate 40000 (--vbv-maxrate 40000 --vbv-bufsize 30000)

thanks , learned a lot , but i still can't understand why not to use Average bitrate?

here is my test for the two mode, one is average bitrate with 6345K, another is constant rate factor with 15, file size little difference, and the picture quality is almost the same:
https://c-t.work/s/97ed3100f47d49


here is the original file for test:
https://c-t.work/s/940d855966224c