Issues with Plex (on Chromecast w/Google TV) transcoding files containing EAC3 audio tracks

Plex Players Streaming Devices
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1

Server Version#: 1.30.1.6562
Player Version#: Don’t have access right now, but it’s on the latest update - non-beta channel

Looking to see if anyone help. It seems like every file with an EAC3 track is transcoding to OPUS.

Player: Chromecast w/ Google TV 4K (has support for DD+/EAC3)

App: Plex through the Google Play Store, and I have the HDMI passthrough setting enabled

TV: Sony X900F (has support for DD+/EAC3)

File #1:

Codec HEVC
Bitrate 5414 kbps
Bit Depth 10
Chroma Location left
Chroma Subsampling 4:2:0
Coded Height 1088
Coded Width 1920
Color Primaries bt709
Color Range tv
Color Space bt709
Color Trc bt709
Frame Rate 23.976 fps
Height 1080
Level 4.0
Profile main 10
Ref Frames 1
Width 1920
Display Title 1080p (HEVC Main 10)
Extended Display Title 1080p (HEVC Main 10)

Codec EAC3
Channels 6
Bitrate 256 kbps
Language English
Language Tag en
Audio Channel Layout 5.1(side)
Sampling Rate 48000 Hz
Display Title English (EAC3 5.1)
Extended Display Title English (EAC3 5.1)

Tautulli result for file #1: https://i.imgur.com/WdlHFi1.png

File #2:

Codec H264
Bitrate 9011 kbps
Bit Depth 8
Chroma Location left
Chroma Subsampling 4:2:0
Coded Height 1088
Coded Width 1920
Color Primaries bt709
Color Range tv
Color Space bt709
Color Trc bt709
Frame Rate 23.976 fps
Height 1080
Level 4.0
Profile high
Ref Frames 4
Scan Type progressive
Width 1920
Display Title 1080p (H.264)
Extended Display Title 1080p (H.264)

Codec EAC3
Channels 6
Bitrate 768 kbps
Language English
Language Tag en
Audio Channel Layout 5.1(side)
Original true
Sampling Rate 48000 Hz
Display Title English (EAC3 5.1)
Extended Display Title English (EAC3 5.1)

Tautulli result for file #2: https://i.imgur.com/4bQRz6J.png

This doesn’t seem to have anything do with the profiles that Plex uses to determine what players can/cannot play, because I had two friends play the same file on their Chromecast w/Google TV 4K and they had different results. One of them direct played, and the other had the same issue as me - audio transcoding to OPUS.

Would love any help I can get here, it’s been driving me crazy.

1 Like
2

Just wanted to add that this file (with DTS audio) plays direct without issue on the same player. As do AC3 files.

File #3:

Codec H264
Bitrate 9200 kbps
Language English
Language Tag en
Bit Depth 8
Chroma Location left
Chroma Subsampling 4:2:0
Coded Height 816
Coded Width 1920
Frame Rate 23.976 fps
Height 802
Level 4.1
Profile high
Ref Frames 5
Scan Type progressive
Width 1920
Display Title 1080p (H.264)
Extended Display Title 1080p (H.264)

Codec DCA
Channels 6
Bitrate 1509 kbps
Language English
Language Tag en
Audio Channel Layout 5.1(side)
Bit Depth 24
Profile dts
Sampling Rate 48000 Hz
Display Title English (DTS 5.1)
Extended Display Title English (DTS 5.1)

Tautulli result for file #3: https://i.imgur.com/jUN81Uj.png

3

do you have DD+ enabled in the devices own audio settings?

4

Whoops!

No, for some reason my supported audio formats was set to Manual on my Chromecast, and after setting it to automatic and double checking that DD+ was enabled, it direct plays perfectly.

Thanks!

5

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