Requirements

• Intel Media SDK 2014 : http://software.intel.com/en-us/vcsource/tools/media-sdk
• mfx_dispatch : https://github.com/lu-zero/mfx_dispatch

Build

• https://github.com/lu-zero/mfx_dispatch/wiki/Libav-integration
• ./configure --enable-libmfx --enable-memalign-hack --extra-libs="-lsupc++ -lstdc++"

Support

• Intel Media SDK API : v1.1
• Codec : H.264
• Rate control method : CBR, VBR, CQP

Codec name

• H.264 : h264_qsv

Rate control option

• CBR : -b 2000k -maxrate 2000k
• VBR : -b 4000k
• CQP : -q 20

Option

• AVCodec : b, maxrate, q, g, bf, refs, slices, coder +vlc, flags -cgop
• QSV : async_depth, timeout, qpi, qpp, qpb, idr_interval, profile, level

Example

QSV encode

• avconv -i "input.ts" -b 2000k -maxrate 2000k -c:v h264_qsv "output.mp4"
• avconv -i "input.ts" -b 4000k -c:v h264_qsv "output.mp4"
• avconv -i "input.ts" -q 20 -c:v h264_qsv "output.mp4"
• avconv -r 30000/1001 -i "input.mp4" -q 20 -c:v h264_qsv "output.mkv"
• avconv -vsync cfr -i "input.mpg" -qpi 22 -qpp 25 -qpb 27 -c:v h264_qsv "output.mp4"