- Intel Media SDK 2014 : http://software.intel.com/en-us/vcsource/tools/media-sdk
- mfx_dispatch : https://github.com/lu-zero/mfx_dispatch
- https://github.com/lu-zero/mfx_dispatch/wiki/Libav-integration
./configure --enable-libmfx --enable-memalign-hack --extra-libs="-lsupc++ -lstdc++"
- Intel Media SDK API : v1.1
- Codec : H.264
- Rate control method : CBR, VBR, CQP
- H.264 :
h264_qsv
- CBR :
-b 2000k -maxrate 2000k - VBR :
-b 4000k - CQP :
-q 20
- AVCodec :
b, maxrate, q, g, bf, refs, slices, coder +vlc, flags -cgop - QSV :
async_depth, timeout, qpi, qpp, qpb, idr_interval, profile, level
QSV encode
ffmpeg -i "input.ts" -b 2000k -maxrate 2000k -c:v h264_qsv "output.mp4"ffmpeg -i "input.ts" -b 4000k -c:v h264_qsv "output.mp4"ffmpeg -i "input.ts" -q 20 -c:v h264_qsv "output.mp4"ffmpeg -r 30000/1001 -i "input.mp4" -q 20 -c:v h264_qsv "output.mkv"ffmpeg -vsync cfr -i "input.mpg" -qpi 22 -qpp 25 -qpb 27 -c:v h264_qsv "output.mp4"