Is your VAAPI library and VAAPI driver new enough? You need at least libva-2.1.0 (VA-API version 1.1.0) and intel-vaapi-driver-2.1.0 for interlaced VC-1 decoding. From the output, I think you are using an older version and the error is just the libva library bailing out for not supporting interlaced VC-1.
Regards, Jerome > are these 2 patches enough or something else ? > It feels like iam missing something but > > i tried > ./ffmpeg -hwaccel vaapi -i SA10180.vc1 -pix_fmt yuv420p -f framecrc crcpatch12 > > but ffmpeg spews errors at me: > > ibva info: VA-API version 0.39.0 > libva info: va_getDriverName() returns 0 > libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so > libva info: Found init function __vaDriverInit_0_39 > libva info: va_openDriver() returns 0 > Stream mapping: > Stream #0:0 -> #0:0 (vc1 (native) -> rawvideo (native)) > Press [q] to stop, [?] for help > Output #0, framecrc, to 'crcpatch12': > Metadata: > encoder : Lavf58.17.100 > Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x480 [SAR > 1:1 DAR 3:2], q=2-31, 103680 kb/s, 25 fps, 25 tbn, 25 tbc > Metadata: > encoder : Lavc58.20.102 rawvideo > [vc1 @ 0x3d430c0] Failed to end picture decode issue: 23 (unknown libva error > / description missing). > Error while decoding stream #0:0: Input/output error _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel