Yanak
1st December 2017, 14:40
Hello all,
In the last changelog version it was added some options like :
x265 can now refine analysis from a previous HEVC encode (using options --refine-inter, and --refine-intra), or a previous AVC encode (using option --refine-mv-type). The previous encode’s information can be packaged using the x265_analysis_data_t data field available in the x265_picture object.
I never used x265 with previous analysis of encoding to ( if i understood correctly ) speed up the process on another encoding of the same source using different encoder settings, usually i just change the parameters and relaunch the encoding and this can take quite some time with x265.
Now i have in plan to test a lot of different settings on some video materials to compare output differences and see what will be the best to store a lot of my videos ( loads of gaming video footage accumulated across the last decade, personal videos and so on. A bunch of those are encoded -or captured and simply stored- in very high bitrates and of course taking lot of space, like some 6-7 minutes videos ≃ 4+GB ).
Wanted to test mostly using different CRF's values, speed presets, tune parameter + adjustment of a few other settings and compare results so i am very interested in speeding up the testing process and again if i understood correctly this could help.
Spotted a bunch of options, same are easy to understand but i'm a bit lost with some others :
--analysis-reuse-mode - save/load option
--analysis-reuse-file - <filename>
--analysis-reuse-level - <1..10> Not sure what is the best to choose here
--rd - <1..6> ?
--rd-refine - Active or not ?
--refine-intra - <0..3> ?
--refine-inter - <0..3> ?
--refine-mv-type - ?
Not sure if i miss some of the settings or if some are not necessary.
In the end I make this post to ask if anyone have some hints about those options and how to test a bunch of different encodings settings on a same input video while speeding up a bit the process using previous analyses please.
Thank in advance guys.
In the last changelog version it was added some options like :
x265 can now refine analysis from a previous HEVC encode (using options --refine-inter, and --refine-intra), or a previous AVC encode (using option --refine-mv-type). The previous encode’s information can be packaged using the x265_analysis_data_t data field available in the x265_picture object.
I never used x265 with previous analysis of encoding to ( if i understood correctly ) speed up the process on another encoding of the same source using different encoder settings, usually i just change the parameters and relaunch the encoding and this can take quite some time with x265.
Now i have in plan to test a lot of different settings on some video materials to compare output differences and see what will be the best to store a lot of my videos ( loads of gaming video footage accumulated across the last decade, personal videos and so on. A bunch of those are encoded -or captured and simply stored- in very high bitrates and of course taking lot of space, like some 6-7 minutes videos ≃ 4+GB ).
Wanted to test mostly using different CRF's values, speed presets, tune parameter + adjustment of a few other settings and compare results so i am very interested in speeding up the testing process and again if i understood correctly this could help.
Spotted a bunch of options, same are easy to understand but i'm a bit lost with some others :
--analysis-reuse-mode - save/load option
--analysis-reuse-file - <filename>
--analysis-reuse-level - <1..10> Not sure what is the best to choose here
--rd - <1..6> ?
--rd-refine - Active or not ?
--refine-intra - <0..3> ?
--refine-inter - <0..3> ?
--refine-mv-type - ?
Not sure if i miss some of the settings or if some are not necessary.
In the end I make this post to ask if anyone have some hints about those options and how to test a bunch of different encodings settings on a same input video while speeding up a bit the process using previous analyses please.
Thank in advance guys.