qsvenc: Make sure the interlaced encoding works
Purpose: qsvenc: make sure that interlaced encoding works. Also, reduce the vertical alignment constraint when possible to reduce memory usage. Note: Most of this code used to be present in ffmpeg and was eliminated in revision 1f26a231 on Oct. 31, 2016 (qsv: Merge libav implementation, at https://github.com/FFmpeg/FFmpeg/commit/1f26a231bb065276cd80ce02957c759f3197 edfa#diff-7d84a34d58597bb7aa4b8239dca1f9f8). Already applied to libav. Reviewed-by:Luca Barbato <lu_zero@gentoo.org> (cherry picked from commit 8fd8f91e) Signed-off-by:
Mark Thompson <sw@jkqxz.net> Signed-off-by:
Aaron Levinson <alevinsn@aracnet.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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