If the dictionary provided on input contains multiple entries for an
option (relevant for flags modifying the previous value with '+' or
'-') and the option is not found in the target object, only the last
entry would be returned to the caller.
Pass AV_DICT_MULTIKEY to av_dict_set() to make sure all such entries are
returned.
---
libavutil/opt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavutil/opt.c b/libavutil/opt.c
index 0a909a8b22..0908751752 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -1752,7 +1752,7 @@ int av_opt_set_dict2(void *obj, AVDictionary **options,
int search_flags)
while ((t = av_dict_iterate(*options, t))) {
ret = av_opt_set(obj, t->key, t->value, search_flags);
if (ret == AVERROR_OPTION_NOT_FOUND)
- ret = av_dict_set(&tmp, t->key, t->value, 0);
+ ret = av_dict_set(&tmp, t->key, t->value, AV_DICT_MULTIKEY);
if (ret < 0) {
av_log(obj, AV_LOG_ERROR, "Error setting option %s to value
%s.\n", t->key, t->value);
av_dict_free(&tmp);
--
2.35.1
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