I've been looking at the source this afternoon, and my interpretation of it is that specifying the profile via caps is only serving a restrictive role, vs. a configuration role. Obviously, I need to study it more, but is this true? To target a different profile, do we need to specifically specify which encoding tools that we want to use?
Thanks, Bill ________________________________________ From: Libva [libva-boun...@lists.freedesktop.org] on behalf of William Katsak [william.kat...@ericsson.com] Sent: Tuesday, 10 November 2015 10:33 AM To: libva@lists.freedesktop.org Subject: [Libva] gstreamer-vaapi strange issue Hello, I am not sure if this the right list for this, but I am seeing a strange issue with gstreamer-vaapi on Intel Haswell. I am doing some experimentation using gstreamer-vaapi on an Intel i3-4370 CPU. I am running libva 1.6.1, and libva Intel driver 1.6.0 on Ubuntu 15.04. My issue is that I cannot seem to get the thing to do anything except constrained baseline, despite asking it to do other profiles. If I do something like this: gst-launch-1.0 filesrc location=/ramdisk/bbb_sunflower_1080p_30fps_normal.mp4 ! qtdemux ! vaapidecode ! vaapiencode_h264 ! video/x-h264,profile=high ! qtmux ! filesink location=/ramdisk/tmp.mov It appears to work fine, but if I check with this: avprobe -show_streams /ramdisk/tmp.mov the output will indicate: profile=Constrained Baseline However, if I change the encode element to: vaapiencode_h264 dct8x8=1 it does change the output profile. My question is, is this correct behavior? Do we need dct8x8 to do anything higher than Constrained Baseline? If so, why? Is this a fundamental detail of H.264, or is this an implementation detail? Thanks in advance for any help or pointers that you might able to give me. -Bill _______________________________________________ Libva mailing list Libva@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/libva _______________________________________________ Libva mailing list Libva@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/libva
