Single MKV file causes audio skipping, but only specific audio track, and only on Shield

[thrillcat 12]

So I have a certain .mkv rip from a blu-ray in my library. For whatever reason, when playing on my Shield, if I select the 5.1 DTS HD audio track, the video appears to skip, almost as if it's trying to play a 24p track at 29.97 or something. It seems to be a steadily timed skip throughout. Switch to the DTS or Uncompressed 2.0 track and it plays fine. It does the same thing in Plex on the Shield.

 

It plays fine in Plex and Infuse on the AppleTV.

 

It's not a bandwidth thing, as I am hardwired to the network, and have zero problem playing any other content - UHD, HD, DTSX, DTSHDMA, etc., nothing else seems to demonstrate this issue.

 

Is there anything in the file specs that looks odd? I didn't see anything. It's almost like the DTS-HD 5.1 track is looking for a 29.97 video file to lock to, while the other two are fine with the 23.98 track, and the Shield is the only device that can't handle it.

 

Log attached, looks like playback attempts were around 20:53:57.890.

Media Info

 

 

Video

Title1080p H264

CodecH264

AVCYes

ProfileHigh

Level41

Resolution1920x1080

Aspect ratio16:9

AnamorphicNo

InterlacedNo

Framerate23.976

Bitrate37,908 kbps

Color primariesbt709

Color spacebt709

Color transferbt709

Bit depth8 bit

Pixel formatyuv420p

Ref frames1

NAL4

 

Audio

Title English PCM_S24LE 2 ch (Default)

LanguageEnglish

CodecPCM_S24LE

Channels2 ch

Bitrate4,608 kbps

Sample rate96,000 Hz

Bit depth24 bit

DefaultYes

 

Audio

Title English DTS 5.1

LanguageEnglish

CodecDTS

ProfileDTS-HD MA

Layout5.1

Channels6 ch

Sample rate96,000 Hz

Bit depth24 bit

DefaultNo

 

Audio

Title English DTS 5.1

LanguageEnglish

CodecDTS

ProfileDTS

Layout5.1

Channels6 ch

Bitrate1,536 kbps

Sample rate48,000 Hz

DefaultNo

 

Container mkv

PathE:\Concert Films\Pink_Floyd_The_Later_Years_Delicate_Sound_of_Thunder\BD_DISC7_t00.mkv

Size31303 MB

embyserver-63716889599.txt

Edited February 10, 2020 by thrillcat

[Luke 37143]

Was there an ffmpeg log as well?

[thrillcat 12]

Was there an ffmpeg log as well?

I didn’t see one. Will look again tonight.

 

 

Sent from my iPhone using Tapatalk

[Luke 37143]

Thanks.

[FrostByte 5055]

The sample rate is a little higher than normal.  All of my DTS including DTS-HD is all 48,000

[thrillcat 12]

The sample rate is a little higher than normal. All of my DTS including DTS-HD is all 48,000

Yeah, it’s a hi-res audio track, and doing a little research it seems like it’s definitely just a shortcoming of the Shield. It doesn’t play surround hi-res.

 

Perhaps Emby could flag these files when playback on a Shield is attempted and transcode to DTSHDMA at 48, so we’re at least not forced into the lossy DTS if we want surround?

 

 

Sent from my iPhone using Tapatalk

Edited February 10, 2020 by thrillcat

[Luke 37143]

Does that other server convert the audio when that track is selected?

[thrillcat 12]

Does that other server convert the audio when that track is selected?

The other server on Shield has the same stutter, direct play.

 

On AppleTV, every app and server coverts to 48k PCM.

 

 

Sent from my iPhone using Tapatalk

[Luke 37143]

Yea it's a difficult situation, where probably it may technically support it but in this case it's just not playing it well. 

 

We'll see what @@ebr thinks. Thanks.

[ebr 14944]

We can't transcode to a downsampled DTS HD.  If the app can see that the sample rate is over spec, then we'd have to transcode to DD.