Copies the contents for the given tag into the value, possibly merging
multiple values into one if multiple values are associated with the tag.
Use gst_tag_list_get_string_index (list, tag, 0, value) if you want
to retrieve the first string associated with this tag unmodified.
The resulting string in value should be freed by the caller using g_free
when no longer needed
Copies the contents for the given tag into the value, possibly merging multiple values into one if multiple values are associated with the tag. Use gst_tag_list_get_string_index (list, tag, 0, value) if you want to retrieve the first string associated with this tag unmodified. The resulting string in value should be freed by the caller using g_free when no longer needed