AAC 7.1 audio causing video skips and no sound

Server Version#: 1.16.5.1554
Player Version#: 7.20.0.11992 (a0514e20)
TV: Philips 55POS9002

I have a bunch of movies that have 7.1 AAC audio and all of them cause my Android TV to not output any sound and to fast forward the video every 10 secs. If I start playing a video I’ll have 5 seconds of normal video with no sound, it will then skip 30 seconds, play for 5 more seconds without sounds, maybe skip 1 minute and so on.

The movies direct play on the TV. If I cast them to the TV’s built in Chromecast then the audio is transcoded and I get sound and normal playback. If I switch another audio track (like the 2.0 commentary track) then the movies play fine.

I can PM logs and samples. Here’s media info for one of the movies:

Media

  • Duration 2:29:21
  • Bitrate 11569 kbps
  • Width 3840
  • Height 1608
  • Aspect Ratio 2.35
  • Video Resolution 4K
  • Container MKV
  • Video Frame Rate 24p
  • Audio Profile lc
  • Video Profile main 10

Part

  • Duration 2:29:21
  • Size 12.07 GB
  • Audio Profile lc
  • Container MKV
  • Video Profile main 10

Video

  • Codec HEVC
  • Bitrate 11569 kbps
  • Bit Depth 10
  • Chroma Subsampling 4:2:0
  • Color Primaries bt2020
  • Color Range tv
  • Color Space bt2020nc
  • Color Trc smpte2084
  • Frame Rate 23.976 fps
  • Height 1608
  • Level 5.0
  • Profile main 10
  • Ref Frames 1
  • Width 3840
  • Display Title 4K (HEVC Main 10 HDR)

Audio

  • Codec AAC
  • Channels 8
  • Language English
  • Audio Channel Layout 7.1
  • Profile lc
  • Sampling Rate 48000 Hz
  • Display Title English (AAC 7.1)

I have the same problem. Also with a Philips TV (55PUS7354).
VLC (on the same device) plays the files just fine.

Would appreciate some help here. A good chunk of my library is unplayable because of this.

Found the reason for me. Audio over optical cable and HDMI Arc only supports up to 5.1 channels and not 7.1.
But then Plex should convert down to 5.1 and doesn’t do that.

When the new ShieldTV is released, I will buy one (even if it’s one more device again)

@Benni-chan is your problem that you’re just not getting audio? My problem is that it makes the video skip + no audio. My audio output is just the TV speakers.

video skips and no audio.
i haven’t tried with tv speakers yet.

Anyone? Still happening with latest client and latest server.

I can play the files just fine if I cast them to a Chromecast or to the TV, but some of them are HDR and I lose that when casting.

Bump.

Still not fixed.

Am I in the wrong part of the forum? No replies from the devs in 2 months?

You have to post logs if they’re going to be able to help you. Get logging started, recreate the issue, and then upload them here. Link to instructions:

Thanks for the link, but I already mentioned in the first post that I have logs and samples that I can PM to a dev. This is a public forum so I’m not going to post them here for privacy reasons.

So I got new information: with the latest player update there’s a new option when I select Optical Passthrough where I can uncheck EAC3 and DTS. Doing that forces a transcode on the audio and the movies play fine with the video stream being copied. However, if I choose subtitles both audio and video are being transcoded due to the known bug. I don’t have any home theater or receiver connected to the TV, just using the builtin speakers.

I’ve got the exact same bug!

Philips 9002. Should play HEVC just fine, but in combination with 7.1 AAC, I’m also facing skips and no audio. When I let Plex transcode, everything works just fine.

Still buggy tho, Plex shouldn’t be transcoding at all, since the Philips supports HEVC fine.

I’ve attached logs. If more are neccesary, I’d be more than willing to retest.

*Edit: on second thought, the standard logs contain way too much information, like plaintext email-adresses… If any dev wants detailed logs, happy to provide!

Plex_Transcoder_Statistics[1].log (46.0 KB)

1 Like

Still happening. No reply from devs in 4 months. This is disappointing.

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