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-rw-r--r--libavutil/opt.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/libavutil/opt.c b/libavutil/opt.c
index 694295dc35..505e0103db 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -1559,7 +1559,9 @@ int av_opt_copy(void *dst, void *src)
uint8_t **field_src8 = (uint8_t**)field_src;
if (o->type == AV_OPT_TYPE_STRING) {
- set_string(dst, o, *field_src8, field_dst8);
+ if (*field_dst8 != *field_src8)
+ av_freep(field_dst8);
+ *field_dst8 = av_strdup(*field_src8);
if (*field_src8 && !*field_dst8)
ret = AVERROR(ENOMEM);
} else if (o->type == AV_OPT_TYPE_BINARY) {