Plex Transcoding and glitchy artificacts

General Discussions
1

Hi

A little confused here

I make my own drone videos and originally had an issue where my 4k TV ( Samsung Q80T) would be transodiing my 4k drone videos

Got some help here and found a good format that allows it to play directly without issue which is:

H265 ( HEVC), Main 10, 5.2 - they are mp4 files

I got some movies that are mkv files and they are:

H265 ( HEVC), Main 10, 5.1 (10bit colour)

The Plex app should still be able to play these directly right?

Tried to transcode one in Adobe media encoder but it wont accept mkv files

Not sure what to do here. It transcodes and wont play.

I did have the early access new version of the plex app. The MKV movie plays in ( Direct Stream) but it plays all glitchy with artifacts, and freezes which is just as bad as buffering with the previous version

( I have rolled back due to this )

I downloaded ffmpeg ( first time using it so dont have much experience)
Tried to do a lossless convert just from mkv to mp4

But getting this error:
mp4 @ 00000212cafaacc0] truehd in MP4 support is experimental, add ‘-strict -2’ if you want to use it.

Could not write header for output file #0 (incorrect codec parameters ?): Experimental feature

added ‘strict -2’

I do and it just repeats the same error

2

Generally speaking, Level 5.1 media should be easier to play than Level 5.2 media, all things being equal - but often all things aren’t equal.

It sounds like these movies are from a different source and have TrueHD audio.

I’m not specifically familiar with that TV or the Samsung app. But it’s my understanding that the Samsung Tizen app does support the MKV container.

https://support.plex.tv/articles/203810286-what-media-formats-are-supported/

The file might need some massaging, but usually going from MKV to MP4 isn’t enough to resolve playback issues.

Can you share the Plex XML info from that file, or perhaps even better, the mediainfo output?

https://mediaarea.net/en/MediaInfo

3

Hi Volts
Thanks for your reply
here is a cut and past of the mediainfo info:

Format/Info : Meridian Lossless Packing FBA with 16-channel presentation
Commercial name : Dolby TrueHD with Dolby Atmos
Codec ID : A_TRUEHD
Duration : 1 h 45 min
Bit rate mode : Variable
Bit rate : 4 697 kb/s
Maximum bit rate : 7 896 kb/s
Channel(s) : 8 channels
Channel layout : L R C LFE Ls Rs Lb Rb
Sampling rate : 48.0 kHz
Frame rate : 1 200.000 FPS (40 SPF)
Compression mode : Lossless
Stream size : 3.45 GiB (14%)
Title : Ip.Man.4.The.Finale.2019.CHINESE.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos
Language : Chinese
Default : Yes
Forced : No
Number of dynamic objects : 11
Bed channel count : 1 channel
Bed channel configuration : LFE

Audio #2
ID : 3
Format : DTS XLL
Format/Info : Digital Theater Systems
Commercial name : DTS-HD Master Audio
Codec ID : A_DTS
Duration : 1 h 45 min
Bit rate mode : Variable
Bit rate : 4 534 kb/s
Channel(s) : 8 channels
Channel layout : C L R LFE Lb Rb Lss Rss
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 24 bits
Compression mode : Lossless
Stream size : 3.33 GiB (14%)
Title : Ip.Man.4.The.Finale.2019.CHINESE.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos
Language : Chinese
Default : No
Forced : No

Audio #3
ID : 4
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 1 h 45 min
Bit rate mode : Constant
Bit rate : 640 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 482 MiB (2%)
Title : Ip.Man.4.The.Finale.2019.CHINESE.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos-
Language : Chinese
Service kind : Complete Main
Default : No
Forced : No

Audio #4
ID : 5
Format : DTS XLL
Format/Info : Digital Theater Systems
Commercial name : DTS-HD Master Audio
Codec ID : A_DTS
Duration : 1 h 45 min
Bit rate mode : Variable
Bit rate : 2 445 kb/s
Channel(s) : 6 channels
Channel layout : C L R Ls Rs LFE
Sampling rate : 48.0 kHz
Frame rate : 93.750 FPS (512 SPF)
Bit depth : 16 bits
Compression mode : Lossless
Stream size : 1.80 GiB (7%)
Title : Ip.Man.4.The.Finale.2019.CHINESE.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos
Language : English
Default : No
Forced : No

Audio #5
ID : 6
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 1 h 45 min
Bit rate mode : Constant
Bit rate : 640 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 482 MiB (2%)
Title : Ip.Man.4.The.Finale.2019.CHINESE.2160p.BluRay.x265.10bit.SDR.DTS-HD.MA.TrueHD.7.1.Atmos
Language : English
Service kind : Complete Main
Default : No
Forced : No

Text #1
ID : 7
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Duration : 1 h 40 min
Bit rate : 26 b/s
Count of elements : 815
Stream size : 19.8 KiB (0%)
Title : English-SRT
Language : English
Default : Yes
Forced : Yes

Text #2
ID : 8
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 40 min
Bit rate : 20.3 kb/s
Count of elements : 1634
Stream size : 14.6 MiB (0%)
Title : English-PGS
Language : English
Default : No
Forced : No

Text #3
ID : 9
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 38 min
Bit rate : 30.2 kb/s
Count of elements : 2706
Stream size : 21.2 MiB (0%)
Title : Chinese-PGS
Language : Chinese
Default : No
Forced : No

Text #4
ID : 10
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 38 min
Bit rate : 28.3 kb/s
Count of elements : 2706
Stream size : 19.9 MiB (0%)
Title : Chinese-PGS
Language : Chinese
Default : No
Forced : No

Text #5
ID : 11
Format : PGS
Muxing mode : zlib
Codec ID : S_HDMV/PGS
Codec ID/Info : Picture based subtitle format used on BDs/HD-DVDs
Duration : 1 h 40 min
Bit rate : 30.3 kb/s
Count of elements : 2060
Stream size : 21.8 MiB (0%)
Title : French-PGS
Language : French
Default : No
Forced : No

Menu
00:00:00.000 : en:Chapter 1
00:11:01.207 : en:Chapter 2
00:21:05.416 : en:Chapter 3
00:31:38.832 : en:Chapter 4
00:40:56.541 : en:Chapter 5
00:50:02.457 : en:Chapter 6
00:58:48.124 : en:Chapter 7
01:10:40.291 : en:Chapter 8
01:18:20.082 : en:Chapter 9
01:29:57.874 : en:Chapter 10
01:41:41.374 : en:Chapter 11

4

I think you chopped off the first part with the container and video info. Can you check?