It is used to allocate scratch buffers by the qsv hwaccel.
---
libavutil/hwcontext_vaapi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libavutil/hwcontext_vaapi.c b/libavutil/hwcontext_vaapi.c
index b2e212c..e955add 100644
--- a/libavutil/hwcontext_vaapi.c
+++ b/libavutil/hwcontext_vaapi.c
@@ -111,6 +111,8 @@ static struct {
//MAP(XBGR, RGB32, 0BGR),
MAP(ARGB, RGB32, ARGB),
//MAP(XRGB, RGB32, 0RGB),
+ // Special scratch buffer format
+ { VA_FOURCC_P208, VA_FOURCC_P208, AV_PIX_FMT_PAL8 },
};
#undef MAP
--
2.9.2
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