Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
libavformat/mux.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavformat/mux.c b/libavformat/mux.c
index 5d89458f82..a7517dae0a 100644
--- a/libavformat/mux.c
+++ b/libavformat/mux.c
@@ -148,6 +148,7 @@ static int validate_codec_tag(AVFormatContext *s, AVStream
*st)
{
const AVCodecTag *avctag;
enum AVCodecID id = AV_CODEC_ID_NONE;
+ unsigned uppercase_tag = ff_toupper4(st->codecpar->codec_tag);
int64_t tag = -1;
/**
@@ -159,7 +160,7 @@ static int validate_codec_tag(AVFormatContext *s, AVStream
*st)
for (int n = 0; s->oformat->codec_tag[n]; n++) {
avctag = s->oformat->codec_tag[n];
while (avctag->id != AV_CODEC_ID_NONE) {
- if (ff_toupper4(avctag->tag) ==
ff_toupper4(st->codecpar->codec_tag)) {
+ if (ff_toupper4(avctag->tag) == uppercase_tag) {
id = avctag->id;
if (id == st->codecpar->codec_id)
return 1;
--
2.34.1
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