Why is Plex transcoding?

Plex Players Smart TVs
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1

Using Plex client on my brand new Samsung QLED QE49Q60R. I was expecting to work out of the box but I got lots of buffering. After an investigation I found that the movie is transcoding. Why is this? I thought in 2019 all the model support x265 even 10bit natively? How can i find the reason why this is transcoding?

Thanks

General
Unique ID : 141658372491183121021728035837636430232 (0x6A9268FF49D9D1AB03236697B1E6C998)
Complete name : … 1080p.mkv
Format : Matroska
Format version : Version 4
File size : 1.86 GiB
Duration : 3 h 5 min
Overall bit rate : 1 431 kb/s
Released date : 1963-03-28
Encoded date : UTC 2019-10-25 16:11:36
Writing application : HandBrake 1.2.2 2019022300
Writing library : Lavf58.20.100
ErrorDetectionType : Per level 1

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main@L4@Main
Codec ID : V_MPEGH/ISO/HEVC
Duration : 3 h 5 min
Width : 1 920 pixels
Height : 752 pixels
Display aspect ratio : 2.553
Frame rate mode : Constant
Frame rate : 23.976 (24000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Default : Yes
Forced : No
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709

Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : A_AAC-2
Duration : 3 h 5 min
Channel(s) : 1 channel
Channel layout : C
Sampling rate : 48.0 kHz
Frame rate : 46.875 FPS (1024 SPF)
Compression mode : Lossy
Delay relative to video : -1 ms
Title : Mono
Language : Italian
Default : Yes
Forced : No

Text
ID : 3
Format : ASS
Codec ID : S_TEXT/ASS
Codec ID/Info : Advanced Sub Station Alpha
Duration : 3 h 4 min
Compression mode : Lossless
Language : English
Default : No
Forced : No

2

The manual says the TV does support h265, but doesn’t says anything about 10-bit; info starts on p135. You could try putting the movie on a USB and seeing if it will work directly on the tv.

1 Like
3

doesn’t appear that file has HD audio, I would suggest try disable subtitles.

post screenshot of your server now playing @ Plex Web > settings > dashboard

also, logs with the problem reproduced are the only way to know for sure.

1 Like
4

You also have ASS subtitles. The Plex app cannot play these as is. Check your subtitle settings and make sure it’s set to “image only” or these gets transcoded into the video.

1 Like
5

the 10 bit was a consideration of mine.after re-checking the video properties it’s clear that this is an 8 bit depth

6

I’m not sure what this HD audio reference means, can you please elaborate?

I will try what you suggested regardless. Thanks!

7

good point about the ASS. I will try also to change the subtitles settings and feed back!

8

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