Re: [FFmpeg-user] Why H264 Encoder is slower than H265 Encoder?

Thanks Zak, I think the problem may related to the OS or the driver. I used the same input media (1080P video) on Windows 7, H264 encoder(240fps) is much faster than H265 encoder(80fps). After some tests, I've found that the problem is that SKL H264 encoder (100fps) is quite slow with old vaapi

Re: [FFmpeg-user] Why H264 Encoder is slower than H265 Encoder?

Hello Shi Qiu, I have two thoughts: 1. Is that the best possible experiment with only one variable changed between the two cases? It looks like the input format changed, too, although the filenames are possibly fake simple examples (simplicity is good). The H264 output has a.h264 as the

[FFmpeg-user] Why H264 Encoder is slower than H265 Encoder?

OS: Ubuntu 16.04 64bit CPU: intel i7 6700 H264: ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device /dev/dri/renderD128 -i a.h264 -c:v h264_vaapi -f h264 t.h264 -y 108fps H265: ffmpeg -hwaccel vaapi -hwaccel_output_format vaapi -hwaccel_device /dev/dri/renderD128 -i a.h265 -c:v