These bits are utilized by channel layouts such as 22.2. If those
are dropped, the returned channel layout is no longer a match
against the AV_CH_LAYOUT define when returned from this function.
return 0;
}
-static int clean_layout(void *s, int64_t layout){
+static int64_t clean_layout(void *s, int64_t layout){
if(layout && layout != AV_CH_FRONT_CENTER && !(layout&(layout-1))) {
char buf[128];
av_get_channel_layout_string(buf, sizeof(buf), -1, layout);