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Ffmpeg subtitle hard decoding, how qsv convert

Added by weijian liang over 5 years ago

It is known that cpu decoding utilization is very high, because of the player problem, the source has subtitle selection.

Ffmpeg
Ffmpeg4.1 -re -i 1.ts -vcodec libx264 -filter_complex "[0:0][0:4]overlay" -preset fast -deinterlace -s 720x576 -b:v 4000k -r 25 -g 25 -x264opts " Cabac=1: ref=3:me=hex:subme=1" -map 0:a:0 -f mpegts 4.ts

Now I want to use gpu qsv encoding, how to convert the code?

QQ截图20190708194221.png (54.4 KB) QQ截图20190708194221.png

Replies (3)

RE: Ffmpeg subtitle hard decoding, how qsv convert - Added by saen acro over 5 years ago 

ffmpeg.exe -hide_banner -i inputFile.ts -c copy -f mpegts -| ffmpeg.exe -hide_banner -hwaccel qsv -c:v mpeg2_qsv -f mpegts -i pipe: -load_plugin 2 -init_hw_device dxva2=gra -init_hw_device qsv@gra -c:v hevc_qsv -preset slow -b:v 1500k -c:a copy "outputFile.ts"

try this
https://pypi.org/project/pytranscoder-ffmpeg/
https://github.com/mlsmithjr/transcoder

RE: Ffmpeg subtitle hard decoding, how qsv convert - Added by weijian liang over 5 years ago

Thank you for your answer, but if you put it in tvheadend, how do you call ffmpeg encoding?

RE: Ffmpeg subtitle hard decoding, how qsv convert - Added by saen acro over 5 years ago

Post processing on recorded content.

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