I’m just looking for consistencies for troubleshooting purposes, 
not advocating for disabling match rate. That does appear to be the common denominator though.
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100%. I can’t believe this problem has been plaguing the ATV for this long unaddressed. I joined the beta to help plex get whatever it needs to correct this problem. The plex frame dropping been the biggest fly the Apple TVos ointment. I kind of wish from time to time for Nvidia to release a new shield or that maybe I should go back to Roku.
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Not all the time, but occasionally I will get frame drops while watching Live TV.
Usually a 50fps channel will run at 40fps.
Also if a channel is already being watched and I press “Watch from live” to join the stream. It will start from the beginning of the cache and live recorded mpegts files, will not be ‘seekable’.
I’m a bit confused here with your statement of a 50fps Channel, then run at 40fps. Are we talking DVR? Where does this have anything to do with Apple player Beta testing update? Please explain?
So are you saying there are dedicated 50fps Channels in your area? Huh…
@Craig_Holliday
Could you please update the server MKV to MP4 remux engine to support Dolby Atmos:
The output mp4 needs complexity_index_type_a in the EC3SpecificBox
This will allow the TV (and AirPods) to switch to Atmos mode when playing those files in AVPlayer
Thank You!
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On topic: Yes I have 50fps live tv channels that run at 50fps using the regular mpv player - but not with the new experimental player, it drops frames and runs about 40fps. Thought it was a given in this thread that I was reporting my playback feedback for the experimental player.
Off Topic: Feed my HDHR through threadfin/xteve so I can pipe it through ffmpeg and deinterlace all the channels to 50fps.
Highly recommend as plex does not deinterlace live tv at this stage, and transcoding will only deinterlace to 25p.
Using my M2 Pro Mac I can deinterlace to 50p using the hevc_videotoolbox or h264_videotoolbox encoder with the yadif_videotoolbox filter with almost no CPU usage.
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Has anyone reported issues with the experimental player and DVD ripped content? I have tested a gen2 ATV4k with a basic Samsung TV with 9470 a few times, and the result is pretty bad. While the release Plex app with new player renders a stable image, the experimental player shows an unstable picture, where the picture cycles every second or so through a fuzzy blocked image and a sharper image. So the (say) face is fuzzy and smeared, then OK, then back to blocky, etc.
I’ve tried 1080p content and it looks ok. I’ve tried the experimental player with match framerate on or off, doesn’t make a difference.
The playback shows as direct play (codec MPEG2VIDEO).
-Alan
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Are you able to share a sample clip?
https://support.plex.tv/articles/201035968-generating-sample-files-from-media/
Here’s a 5-minute clip that shows the rendering issue on the above. Let me know if I’ve done the sample wrong.
-Alan
@webminster I’m able to replicate the issues with the new experimental player, and the Old Player forces a transcode (MPEG2video isn’t supported by Apple’s AVPlayer).
What’s interesting is that I do not see a similar issue with MPEG2Video for LiveTV. I wonder if it is because your content wasn’t de-interlaced on ingest? I don’t have any other 480i@29.97 content to test with.
Mediainfo for the file you supplied shows the following:
General
Unique ID : 191201970267760746019677140524886336517 (0x8FD828F587081E6A57776404DB8B2405)
Complete name : Frasier.S06E10-001.mkv
Format : Matroska
Format version : Version 4
File size : 304 MiB
Duration : 5 min 1 s
Overall bit rate mode : Variable
Overall bit rate : 8 462 kb/s
Frame rate : 29.970 FPS
Encoded date : 2024-10-27 19:37:17 UTC
Writing application : mkvmerge v88.0 ('All I Know') 64-bit
Writing library : libebml v1.4.5 + libmatroska v1.7.1
Video
ID : 1
ID in the original source medium : 224 (0xE0)
Format : MPEG Video
Format version : Version 2
Format profile : Main@Main
Format settings : CustomMatrix / BVOP
Format settings, BVOP : Yes
Format settings, Matrix : Custom
Format settings, GOP : Variable
Format settings, picture structure : Frame
Codec ID : V_MPEG2
Codec ID/Info : MPEG 1 or 2 Video
Duration : 4 min 59 s
Bit rate mode : Variable
Bit rate : 8 305 kb/s
Maximum bit rate : 9 800 kb/s
Width : 720 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate mode : Constant
Frame rate : 29.970 (30000/1001) FPS
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Interlaced
Scan order : Top Field First
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.802
Time code of first frame : 00:59:59;00
Time code source : Group of pictures header
GOP, Open/Closed : Open
GOP, Open/Closed of first frame : Closed
Stream size : 297 MiB (98%)
Language : English
Default : No
Forced : No
Color primaries : BT.601 NTSC
Transfer characteristics : BT.601
Matrix coefficients : BT.601
Original source medium : DVD-Video
Audio
ID : 2
ID in the original source medium : 189 (0xBD)128 (0x80)
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 5 min 0 s
Bit rate mode : Constant
Bit rate : 192 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 6.87 MiB (2%)
Title : Stereo
Language : English
Service kind : Complete Main
Default : Yes
Forced : No
Original source medium : DVD-Video
Dialog Normalization : -27 dB
compr : 6.02 dB
dynrng : 6.02 dB
dsurmod : Not Dolby Surround encoded
dialnorm_Average : -27 dB
dialnorm_Minimum : -27 dB
dialnorm_Maximum : -27 dB
Text
ID : 3
ID in the original source medium : 224 (0xE0)
Format : UTF-8
Codec ID : S_TEXT/UTF8
Codec ID/Info : UTF-8 Plain Text
Duration : 4 min 52 s
Bit rate : 131 b/s
Frame rate : 0.512 FPS
Count of elements : 150
Stream size : 4.70 KiB (0%)
Language : English
Default : Yes
Forced : No
Original source medium : DVD-Video
Menu
00:00:00.000 : en:Chapter 01
00:02:55.975 : en:Chapter 02
EDIT: I did find a 480i broadcast on Live TV, and I’m not able to replicate the issue there either.
The video files are MakeMKV rips from the disks without any postprocessing.
Tried the latest Beta. Couple of issues:
- When playing 4k HDR with subtitles - I see minor frame freeze every few mins. Couple of times it was when subtitles being rendered again after certain timeframe without any text. Not too sure if they are related.
- Minor UI Bug - when changing audio track - I guess it is the third pane (Technical Details) doesn’t update with the latest track information. It still shows the audio track that was selected when the playback was initiated.
Bit late to the party but the latest experimental player build is as stuttery as the original issue, like all the fixes are gone
Same. I went back a few builds which works better. Too much stutter in the latest.
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Is it possible the notes are wrong and the build that says experimental player does not actually have it?
I am checking here, everyone is on the same page.
8.42 (9478) is a BETA release not a Experimental Player Release 8.42 (9470). If unsure, swipe down when playing a title and Go to `Technical Details’ to check.
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I have also noticed an increase in stutter on 8.42 (9470), but typically only with TrueHD audio that transcodes to FLAC.
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I’m on 9470, the notes say it is experimental player. I have NOT installed the 9478 build for that reason. The stutter is there on 9470 for every piece of content I’ve played, from 480p DVD rips through 2160p BD Rips. I don’t use anything fancy, I only use stereo audio on all my rips and I have no additional sound system.
Ok, I have yet to notice any issue on 480p, I mostly have 1080p or at times 720p content on a everyday use case. My audio goes to a LG65 OLED B8 so a few year old now ( 6 Years old). It maybe helpful to post media info of title causing issues.
ATV is a (2022) model 128GB, Gigabit Ethernet connected
It’s literally every title though. Downgrading to build 9420 immediately removes the stutter, much like when we first hit the issue with 8.18.
