NV12 is added in system memory and the command below may work now.
$ ffmpeg -init_hw_device qsv -c:v h264_qsv -i input.h264 -vf
deinterlace_qsv -f null -
---
libavfilter/vf_vpp_qsv.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavfilter/vf_vpp_qsv.c b/libavfilter/vf_vpp_qsv.c
index 99659a5523..b90cdcb5e7 100644
--- a/libavfilter/vf_vpp_qsv.c
+++ b/libavfilter/vf_vpp_qsv.c
@@ -720,7 +720,9 @@ static const AVOption qsvdeint_options[] = {
static int qsvdeint_query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pixel_formats[] = {
- AV_PIX_FMT_QSV, AV_PIX_FMT_NONE,
+ AV_PIX_FMT_NV12,
+ AV_PIX_FMT_QSV,
+ AV_PIX_FMT_NONE,
};
AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
--
2.25.1
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