To do that, I had to turn off this Dark Side of the Moon 5.1 mix, and that’s harder than I thought it would be.
Just loaded a 24.000 fps movie that shows this, 4K, SDR, in Plex for Mac, checked the XML info while it was playing and there was no requiredBandwidth lines. So I’m still looking into it.
I found another 4K Matroska file, with frame rate 25.0 and eac3_at audio, no issue… I’ll try to do more comparisons between those two files.
Try to find a 24.000 fps video. I’m looking at video bitrate viewers.
Here’s the XML Media excerpt for my trouble file, there is no ‘RequiredBandwidths’ tag in it:
In can however see RequiredBandwidths in the other 4K Matroska 25.000 fps file I just found. I reran 'Analyze' from the Plex desktop, but nothing changed on the XML (except timestamp/thumbnail) for the 'bad' file.<Media id="11126" duration="3269568" bitrate="18636" width="3840" height="2160" aspectRatio="1.78" audioChannels="2" audioCodec="aac" videoCodec="hevc" videoResolution="4k" container="mkv" videoFrameRate="PAL" audioProfile="lc" videoProfile="main 10"> <Part accessible="1" exists="1" id="11305" key="/library/parts/11305/1651576232/file.mkv" duration="3269568" file="blahblahblah.mkv" size="7616660404" audioProfile="lc" container="mkv" videoProfile="main 10"> <Stream id="36641" streamType="1" default="1" codec="hevc" index="0" bitrate="18636" language="English" languageTag="en" languageCode="eng" bitDepth="10" chromaLocation="left" chromaSubsampling="4:2:0" codedHeight="2160" codedWidth="3840" colorPrimaries="bt2020" colorRange="tv" colorSpace="bt2020nc" colorTrc="arib-std-b67" frameRate="25.000" height="2160" level="153" profile="main 10" refFrames="1" width="3840" displayTitle="4K HLG (HEVC Main 10)" extendedDisplayTitle="4K HLG (HEVC Main 10)"> </Stream> <Stream id="36642" streamType="2" selected="1" default="1" codec="aac" index="1" channels="2" bitrate="189" language="English" languageTag="en" languageCode="eng" audioChannelLayout="stereo" profile="lc" samplingRate="48000" displayTitle="English (AAC Stereo)" extendedDisplayTitle="English (AAC Stereo)"> </Stream> </Part> </Media>
Other posts on this forum say that the detailed bandwidth information is only found during scheduled maintenance and depending on whether analysis is enabled in your settings.
There are ways to trigger it. I’m messing around with those atm.
Where it says <Media id="11126" do you know if that’s the main ID that Plex uses for everything related to that movie on your system? I need the ID to query the sql database.
Could you answer a question. It appears I need to initiate a scan with --analyze-deeply but I need the Item ID. Seems you were in on a similar discussion here:
Use the number in Video → ratingKey in the XML as your -o value
The value in seeing requiredBandwidths is just that it will show the analyzed peak bitrates in the file. It will probably be 100% to 300% higher than the average. It’s not going to explain slow playback framerate though.
PM a sample or a link to the file! Lol.
When I get 99% of the way there but Plex Media Scanner crashes every time I run it from the command line, things go off the rails. Now I’m checking my db 
[/] $ "/share/CACHEDEV1_DATA/.qpkg/PlexMediaServer/Plex Media Scanner" --list
libc++abi: terminating with uncaught exception of type soci::soci_error: sqlite3_statement_backend::prepare: no such column: library_sections.content_changed_at for SQL: select library_sections.id as 'library_sections_id', library_sections.library_id as 'library_sections_library_id', library_sections.name as 'library_sections_name', library_sections.name_sort as 'library_sections_name_sort', library_sections.section_type as 'library_sections_section_type', library_sections.language as 'library_sections_language', library_sections.agent as 'library_sections_agent', library_sections.scanner as 'library_sections_scanner', library_sections.user_thumb_url as 'library_sections_user_thumb_url', library_sections.user_art_url as 'library_sections_user_art_url', library_sections.user_theme_music_url as 'library_sections_user_theme_music_url', library_sections.created_at as 'library_sections_created_at', library_sections.updated_at as 'library_sections_updated_at', library_sections.scanned_at as 'library_sections_scanned_at', library_sections.user_fields as 'library_sections_user_fields', library_sections.query_xml as 'library_sections_query_xml', library_sections.query_type as 'library_sections_query_type', library_sections.uuid as 'library_sections_uuid', library_sections.changed_at as 'library_sections_changed_at', library_sections.content_changed_at as 'library_sections_content_changed_at' from library_sections
****** PLEX MEDIA SCANNER CRASHED, CRASH REPORT WRITTEN: /root/Library/Application Support/Plex Media Server/Crash Reports/1.27.2.5929-a806c5905/PLEX MEDIA SCANNER/ae0b16d5-6ed9-4b0b-f91a9096-09792051.dmp
Aborted
[/] $ Error in command line:the argument for option '--serverUuid' should follow immediately after the equal sign
Here is the XML output of a 24.000 fps 4K HEVC Main10@L5@Main SDR that stutters.
313.xml.zip (1.7 KB)
I was able to run Plex Media Scanner --analyze-deeply on the film so that the XML includes requiredBandwidth. We can see it’s not high in that film, yet it stutters.
bitrate="12586" container="mkv" deepAnalysisVersion="6" requiredBandwidths="17442,14991,12890,12871,12871,12871,12871,12871" videoProfile="main 10">
I’ll find another.
Are you guys gonna share a sample or a link to a file?
I’ll get you one right now and PM it, thanks.
I used to put them on my github and share the link, but I haven’t tested it in a while.
After finding this post of yours too late, I am humbled.
Hahah that post came after a significant amount of self-inflicted pain, personal failure to read docs, and general confusion.
Cool! I’ll look at them tonight.
lol I spent an hour on that scanner error, repaired my database, then started a new topic
Frame by Frame Analysis:
Given a 24fps 4K HEVC stuttering film cut down to the first 30sec,
I thought I would post a bitrate graph I made. The bitrate inspection script records the number of bytes in every frame, then graphs that. It uses ffprobe and runs at 32fps off an NVME.
The HEVC was listed as Main 10@L5@Main by mediainfo.
That specification supports 4K30fps with 25 Mbps peaks according to wikipedia
This video is 4K24 with the following peaks:
which is interesting; however the Jellyfish 140Mbps is much greater than 24 Mbps, and it plays.
This is about where my knowledge is capped atm.
Plex team please look into this problem we all have 
Signing into community for the first time to say that I think this is an issue that I am also having. Started with the last update, possibly the one before.
Definitely an issue specifically with the AppleTV Plex app. No issues playing the same videos on other devices, or through the VLC AppleTV app.
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