[FFmpeg-user] HW 8bit to 10bit conversion

Andy Sheimo asheimo at gmail.com
Sun Nov 22 14:18:30 EET 2020

Is it possible in a full hardware pipeline i.e. -hwaccel either nvidia or
intel(qsv) to convert a video from 8bit to 10bit. Currently we get errors:

Impossible to convert between the formats supported by the filter
'Parsed_null_0' and the filter 'auto_scaler_0'
Error reinitializing filters!
Failed to inject frame into filter network: Function not implemented
Error while processing the decoded data for stream #0:0

ffmpeg -loglevel error -stats -hwaccel qsv -c:v h264_qsv -i
<input.mkv> -map 0:0 -c:v hevc_qsv -pix_fmt:v p010le -b:v 6000k
-maxrate:v 18000k -load_plugin:v hevc_hw -color_primaries:v bt709
-color_trc:v bt709 -colorspace:v bt709 -metadata:s:v title\=
-disposition:v default -map 0:1 -c:a:0 ac3 -b:a:0 640k -metadata:s:a:0
title\= -disposition:a:0 default -sn -metadata:g title\= -default_mode
passthrough <output.mkv>

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