Both Interlaced and progressive content is supported.įfmpeg -i input.mp4 -load_plugin hevc_hw -c:v hevc_qsv -pix_fmt p010le -global_quality 25 -g 24 -c:a aac -b:a 192k -metadata:s:a language=eng -metadata creation_time=now -loglevel verbose hevc.mp4įfmpeg -i input.mp4 -c:v h264_qsv -global_quality 25 -g 24 -c:a aac -b:a 192k -metadata:s:a language=eng -metadata creation_time=now -loglevel verbose avc. Lookahead is only available on Intel® Iris™ Pro Graphics, Intel® Iris™ Graphics and Intel® HD Graphics on Haswell architecture (4th Generation Core) and forward. h264qsv 0x55f603a5e240 No device available for decoder: device type qsv needed for codec h264qsv. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream. It is the number of frames analyzed before encoding. The most likely reason is either wrong type (e.g. LookAheadDepth, a parameter which specifies the depth of look ahead rate control algorithm. The equivalent ratecontrol method is LA_ICQ. The test above performs transcode, decoding an H.264 elementary stream and re-encoding at a dierent bitrate with lookahead bitrate control.
The QSV encoder doesn’t have a parameter called CRF.
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