On 15/09/17 00:15, Andy Furniss wrote: > Andy Furniss wrote: >> Mark Thompson wrote: >>> --- >>> Now sets the trusted packet flag; otherwise unchanged. >>> >>> >>> configure | 1 + >>> libavdevice/Makefile | 1 + >>> libavdevice/alldevices.c | 1 + >>> libavdevice/kmsgrab.c | 455 >>> +++++++++++++++++++++++++++++++++++++++++++++++ >>> 4 files changed, 458 insertions(+) >>> create mode 100644 libavdevice/kmsgrab.c >>> >>> diff --git a/configure b/configure >>> index 6581c53c1a..76a7591ceb 100755 >>> --- a/configure >>> +++ b/configure >>> @@ -3040,6 +3040,7 @@ gdigrab_indev_select="bmp_decoder" >>> iec61883_indev_deps="libiec61883" >>> jack_indev_deps="jack" >>> jack_indev_deps_any="sem_timedwait dispatch_dispatch_h" >>> +kmsgrab_indev_deps="libdrm" >> >> Doesn't get built for me = doesn't show up as indev after configure anything >> special needed? > > Never mind I found --enable-libdrm (had tried --enable-kmsgrab)
I assume you're going to try AMD + Mesa + VAAPI. VAAPI_DISABLE_INTERLACE=1 ./ffmpeg_g -y -format bgr0 -device /dev/dri/card1 -f kmsgrab -i - -vsync 0 -init_hw_device vaapi=v:/dev/dri/renderD129 -filter_hw_device v -vf 'hwmap,scale_vaapi=w=1920:h=1080:format=nv12' -c:v h264_vaapi -profile 578 -bf 0 out.mp4 Three Mesa issues I had to get around: * Device derivation doesn't work because the Mesa driver doesn't want to initialise on the DRM master device for some reason; making the matching device separately does work. * Against current git, you need to reapply the VAAPI_DISABLE_INTERLACE patch and use it - if not, the colour conversion just barfs because it wants interlaced surfaces. * The postproc scaler seems to only write the luma plane when converting from RGB - this is also visible when uploading normal RGB images, so just a bug somewhere. With that, it works to record the screen in greyscale... I have some other Mesa stuff to do queued up (libva2 with VAAPI export for EGL import on AMD), so I'll pursue these further soonish. - Mark _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
