Test CQP PSNR

[zhongyizengzy]

CommandLine:HevcEncoderApp -i 电视剧_室外_3mins.yuv -w 1920 -h 1080 -intra-period 250 -rc 0 -q 25 -fps 30 -encMode 4 -b 电视剧_室外_3mins.h265
Result:PSNR y:36.215654 u:48.971443 v:48.142267 average:37.851158
Question:12 dB between y and u/v,it is too large

[hassount]

@zhongyizengzy
For PSNR benchmarking please use -tune 1 (objective quality mode).

[hassount]

@zhongyizengzy
Just a quick note on the command line above. the -intra-period parameter represents the distance between two intra frames. i.e. the command line above will result in setting an intra frame at POC 251. If the intent to set it at POC 250, then -intra-period 249 should be used instead.

[hassount]

Just pushed a change setting -tune 1 (objective quality mode) as the default mode to accommodate of the of benchmarking PSNR/SSIM by default.

[zhongyizengzy]

@zhongyizengzy
For PSNR benchmarking please use -tune 1 (objective quality mode).

ok,I see,Thks

[zhongyizengzy]

@zhongyizengzy
Just a quick note on the command line above. the -intra-period parameter represents the distance between two intra frames. i.e. the command line above will result in setting an intra frame at POC 251. If the intent to set it at POC 250, then -intra-period 249 should be used instead.

ok