Hi, I'd like to test decoding an mpeg2 or h264 video file on imx8mq, using its vpu: I use Philipp's changes for imx8m from https://git.pengutronix.de/cgit/pza/linux/log/?h=hantro/imx8m-wip in my tree: https://source.puri.sm/martin.kepplinger/linux-next/commits/5.6-rc1/librem5__integration and play around with gstreamer, taking notes at https://source.puri.sm/Librem5/linux-next/issues/74 The driver probes fine and v4l2 appearently sees the MEM2MEM decoder: $ v4l2-ctl --list-devices nxp,imx8mq-vpu-dec (platform: hantro-vpu): /dev/video0 AFAIK gstreamer should provide a "v4l2videodec" element which it doesn't: $ gst-inspect-1.0|grep -i v4l video4linux2: v4l2deviceprovider (GstDeviceProviderFactory) video4linux2: v4l2radio: Radio (video4linux2) Tuner video4linux2: v4l2sink: Video (video4linux2) Sink video4linux2: v4l2src: Video (video4linux2) Source First: Philipp, do you plan to continue working on supporting hantro for imx8m upstream? Then: What codec would be appropriate to test decoding now? It seems like h264 is supposed to be implemented. How do you test? And finally: What could be missing here? I use debian's gstreamer package, but in this case it can't really be a config/build issue in gstreamer, right? thanks, martin
