> From: ffmpeg-user [mailto:[email protected]] On Behalf Of > Jason Coleman > Sent: Thursday, July 19, 2018 2:54 AM > To: [email protected] > Subject: [FFmpeg-user] Can I get hardware decode of WMV with qsv > encode? > > Hello, > > > I'm trying to figure out if I can use the QuickSync support to handle WMV > files. QuickSync itself I believe can handle WMV, but I don't see a codec > option I can invoke that appears to designate WMV decode using the qsv > engine.
VC1 video codec is supported. Please try: "-hwaccel qsv -c:v vc1_qsv" is the WMV files have vc1 video clips. > > If I can't use qsv directly to handle wmv3, is it possible for me to specify > dxva2 for the decode(presumable using QuickSync via DirectX) part, but then > have QuickSync handle the transform(resize) and encode stages? I think > dxva2 would be fine for the transform as well, I don't think it will work on > the encode stage for qsv based h.264/h.265, but if I'm wrong there, that's > fine. The goal here is to offload as much of my transcode operation as > possible when transcoding from a wmv2/3 source to an h.264 or hevc > target. > > > Thank you! You may want to try: ffmpeg -hwaccel dxva2 -hwaccel_output_format dxva2_vld -i input.mp4 -vf 'hwmap=derive_device=qsv,format=qsv' -c:v h264_qsv output.mp4 (Haven't verified this due to I don't care Windows very much) _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
