From 46a94fa5256ba002692ae140e520bb198b8f16d7 Mon Sep 17 00:00:00 2001
From: Matthew Haughton <3flex@users.noreply.github.com>
Date: Sat, 2 Nov 2024 18:01:30 +1100
Subject: [PATCH] Request mp4 container when transcoding HLS video

Shaka player 4.8 and up always remuxes TS to MP4, while the Jellyfin Cast
client always requests a TS container. This means any transcoded MP4 stream
will be remuxed to TS on the server then remuxed again on the device.

As Cast clients (particularly older ones) are low-powered devices, it's
important to reduce load on the device when possible. It also avoids
unnecessary remuxing on the server in some scenarios.

In local testing the Shaka player version is 4.3.4 but this will be updated
automatically to 4.9.2 in future. This change is still useful for earlier
Shaka player versions since TS remuxing was identified as a problem area
anyway, so using MP4 should improve streaming reliablity to Cast devices
regardless of the Shaka version.
---
 src/components/deviceprofileBuilder.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/components/deviceprofileBuilder.ts b/src/components/deviceprofileBuilder.ts
index c535114..d1a24b8 100644
--- a/src/components/deviceprofileBuilder.ts
+++ b/src/components/deviceprofileBuilder.ts
@@ -333,7 +333,7 @@ function getTranscodingProfiles(): TranscodingProfile[] {
         TranscodingProfiles.push({
             AudioCodec: hlsAudioCodecs.join(','),
             BreakOnNonKeyFrames: false,
-            Container: 'ts',
+            Container: 'mp4',
             Context: EncodingContext.Streaming,
             MaxAudioChannels: audioChannels.toString(),
             MinSegments: 1,