From 07440f359e3183114f1a0e3fa49a7c0e6868fd3b Mon Sep 17 00:00:00 2001
From: Alexey Khit <alexey.khit@gmail.com>
Date: Sat, 8 Jul 2023 09:34:00 +0300
Subject: [PATCH] Update MP4 codecs detection

---
 pkg/mp4/helpers.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkg/mp4/helpers.go b/pkg/mp4/helpers.go
index fc2a9cf9..34bd394d 100644
--- a/pkg/mp4/helpers.go
+++ b/pkg/mp4/helpers.go
@@ -55,6 +55,7 @@ func ParseCodecs(codecs string, parseAudio bool) (medias []*core.Media) {
 	var videos []*core.Codec
 	var audios []*core.Codec
 
+loop:
 	for _, name := range strings.Split(codecs, ",") {
 		switch name {
 		case MimeH264:
@@ -66,6 +67,10 @@ func ParseCodecs(codecs string, parseAudio bool) (medias []*core.Media) {
 		case MimeAAC:
 			codec := &core.Codec{Name: core.CodecAAC}
 			audios = append(audios, codec)
+		case "null":
+			// this means that the browser is lying about the codecs it can play
+			// and we are not supposed to believe that it can flac or opus
+			break loop
 		case MimeFlac:
 			audios = append(audios,
 				&core.Codec{Name: core.CodecPCMA},