A pixel format which has a palette also has alpha, without this patch the
format negotiation might have preferred formats without alpha even if the
source had alpha.
Signed-off-by: Marton Balint <c...@passwd.hu>
---
libavfilter/avfiltergraph.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavfilter/avfiltergraph.c b/libavfilter/avfiltergraph.c
index 4cc6892404..e18f733e23 100644
--- a/libavfilter/avfiltergraph.c
+++ b/libavfilter/avfiltergraph.c
@@ -679,7 +679,7 @@ static int pick_format(AVFilterLink *link, AVFilterLink
*ref)
if (link->type == AVMEDIA_TYPE_VIDEO) {
if(ref && ref->type == AVMEDIA_TYPE_VIDEO){
- int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2
== 0;
+ int has_alpha= av_pix_fmt_desc_get(ref->format)->nb_components % 2
== 0 || (av_pix_fmt_desc_get(ref->format)->flags & AV_PIX_FMT_FLAG_PAL);
enum AVPixelFormat best= AV_PIX_FMT_NONE;
int i;
for (i=0; i<link->in_formats->nb_formats; i++) {
--
2.13.6
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