The upside down in the screenshot is just an iOS 18 bug, playback is correct side up.
I went ahead and pushed a build with some of my work from the week.
8.39 (9127)
Here’s what changed:
- I rolled back some of the audio changes I previously made which seemed to cause playback issues. I had to disable audio offset though because that added to the issues.
- Dolby Vision Profile 5 should now automatically use AVPlayer just like previous builds.
- It was reported internally that there were scenarios where the display was not switching to the correct framerate and dynamic range. That should now work a bit better.
- The iOS aspect ratio issue should be fixed and the double tap to “zoom in/out” functionality has been re-enabled.
- The issue where when a video ended the app would navigate back to the episode selection and the audio would play in the background should be fixed.
I’m still working on other feedback but I thought these small improvements would be helpful.
Can confirm that P5 content now plays using the AVplayer
On a side note, you said you was working on DV compatibility, does this include profile 8 support? and will we see profile 5 supported in the new player rather then relying on AV Player?
This does indeed appear to be fixed for me, thanks Craig!
I rolled back some of the audio changes I previously made which seemed to cause playback issues. I had to disable audio offset though because that added to the issues.
Looks to have resolved the audio sync issues I was having on the Apple TV 4K with match framerate on.
Audio levels on the TrueHD to FLAC multichannel transcode on the AppleTV 4K also are better. No longer need to max out the volume.
On iOS, looks to still be transcoding to FLAC 2.0 instead of multichannel FLAC.
The iOS aspect ratio issue should be fixed and the double tap to “zoom in/out” functionality has been re-enabled.
Can confirm this has been resolved for me.
The issue where when a video ended the app would navigate back to the episode selection and the audio would play in the background should be fixed.
Looks to be resolved for me.
@Craig_Holliday - Latest experimental player beta 8.39 (9127) plays my “reference” DoVi Prof 8 file as SDR, reverting to “regular” beta 8.38.1 brings back the Dolby Vision.
Hi Craig, no issues installing 8.39 (9127)
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Have not being using Audio offset, So no comment
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Some Dolby Vision Profile 5 , returns a Error. What is a
segmented Subtitle?
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Dynamic Range seems to return a better Picture. Agree, it is noticeable
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TV series
Nextworks as intended foroffandOn. So good…
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SRT subs looking good in 4k Titles.
With 4k titles odd Technical Details of trans coding instead of Direct play have gone. Is this a result of Dynamic Range and Frame rate?
This Update is a great improvement for my viewing requirements, thank you job well done. 
To add, I have yet to find a DoVi Profile 8in my Library to confirm the reported issue of SDR, if someone has a sample to test it would be much appreciated.
AppleTV is entirely the wrong device if you want Profile 7. There is no carrot to lure apple to support disc formats.
Profile8 AFAIK on the ATV/Plex app, has been dv headers, but playback of the HDR10 compatibility layer. Look into an Infuse subscription.
If you want AppleTV and DV, make sure you conform to profile5.
If you want DV as a wide cast blanket, get another device.
I agree with @Xhaka. Profile 7 should fall back to HDR10. I spent this morning writing a script to extract all HDR format and DV profile data so i could do some thorough testing of different formats, profile and levels. I should have that wrapped up shortly. But i am seeing a big regression in the latest version in that so far any DV profile 7 or 8 file, which used to either trigger fake DV but but still fallback to HDR, or just fail to HDR10, are now failing to SDR. I’m doing a bit more testing but that’s my early finding. Will post back later with my analysis and sample clips.
@rcork Yes, that confirms what I’m seeing for Profile 8 files at least.
FYI, TrueHD is transcoding to FLAC (server-side) on the latest build. This wasn’t the case for me on previous builds. I do appreciate the fix(es) for audio sync issues! Keep up the stellar work :-).
How close are we on a release date for the new version that should solve my lingering audio sync issues when Match Framerate is enabled?
Build 8.39 (9127) has broken frame rate matching on my system. I can see that the tv changes mode but then reverts back when the video starts playing.
any update on this? Plex app on appletv has been very buggy! Infuse app plays with no issues! DTS, TrueHD and ATMOS!
I’ve been doing a little more testing over the weekend. I wrote a script to extract the HDR metadata from my files to determine what mix of HDR content I have. My HDR library consists of HDR10, DV profile 7 and DV profile 8 media files (no DV profile 5). With the latest experimental player build (8.39-9127), none of my HDR content plays back in HDR mode. I went back and tested the same files on the last three experimental builds (8.39-9127, 8.39-9106, 8.39-8915) as well as the latest production version (8.38.1) to compare results. I tested on two different setups that have not changed.
- Apple TV 4K → Onkyo TX-NR6050 → LG OLED CX
- Apple TV 4K → Vizio P659-G1
On both Apple TVs i have Match Dynamic Range set to On and Match Frame Rate set to Off
When i attempt to play back any of the test files (samples below) on version 8.39-9127, it appears as if the TV attempts to enable HDR mode but after a few seconds, fails back to SDR mode. This happens on both TV setups. This issue is not present in 8.39-9106 or 8.39-8915. Here’s a table with my test results.
| File | DV / HDR | Version | Profile | Level | 8.39-9127 | 8.39-9106 | 8.39-8915 | prod - 8.38.1 |
|---|---|---|---|---|---|---|---|---|
| Kingdom of the Planet of the Apes (2024) | Dolby Vision | Version 1.0 | Profile 8.1 | dvhe.08.06 | fail - plays in SDR | success - plays in HDR | success - plays in DV but dark | success - plays DV |
| Avatar (2009) | Dolby Vision | Version 1.0 | Profile 7.6 | dvhe.07.06 | fail - plays in SDR | success - plays in HDR | success - plays in DV but dark | success - plays DV |
| 2001 A Space Odyssey (1968) | SMPTE ST 2086 | HDR10 compatible | fail - plays in SDR | success - plays in HDR | success - plays in HDR | success - plays HDR |
And sample files:
Log file:
com.plexapp.plex 2024-08-18–23-12-33-472.log (42.1 KB)
Another bug to report in iOS for 8.39(9217)…
When direct playing multichannel audio of any codec without headphones (using iPhone speakers), center channel audio is barely audible and sounds like it’s under water.
Forcing a transcode corrects the issue (as audio is transcoded to stereo). I’m also not encountering the issue with AirPod Pros.
Tested with EAC3 5.1, DTS 5.1, AAC 5.1
@rcork I attempted to download your sample files to verify your findings on my setup but unless I’m mistaken the Avatar and 2001 links both point to the same Avatar file? Can you check your links please and correct if you concur?
Cheers Mate!
I have a bug on tvOS 8.39 (9127) on Apple TV 4k A1842. Playback of xvid video (mediainfo says the codec is mp4v-20) in avi and mp4 containers is broken, the screen is entirely green with pixelated flashes. I have the same content in an avi and an mp4, and I confirmed that both work when played by 8.36 (8457). Interestingly, if I turn off the “new” player on 8.39 the avi file works but the mp4 continues to be green.
Let me know if I need to upload the avi and mp4 files or the logs.
FYI, my lip sync issues with HDR content are fixed by 8.39 (9127).
It would be interesting if MultiPlexing to mkv would resolve the issue.
MKVToolNix
Thanks for that, I thought xvid was incompatible with mkv, but I guess it’s just incompatible with ffmpeg (or my version of ffmpeg).
I muxed the avi into an mkv with mkvmerge, and the mkv is green on the new player, but plays fine in the old player on 8.39.
