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melapple

macrumors regular
Original poster
Aug 29, 2013
183
20
Just noticed YouTube has pushed an update on the Apple TV app with a “5.1 surround” button but it’s not working on my Apple TV. Did any of you check?
 

-Gonzo-

macrumors 65816
Nov 14, 2015
1,003
468
I still see only 2.06.22.00 - June 13, 2021 YouTube app on tvOS via App Store. How about a photo of this?
They don’t necessarily need to update the actual app itself as an App Store update, they can just push certain functions to the existing app version.
They did the same recently with the new press and hold function that gives further options on the thumbnails.
I haven’t checked mine for this 5.1 button yet, but will be doing so when I finish work.
 
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melapple

macrumors regular
Original poster
Aug 29, 2013
183
20
They don’t necessarily need to update the actual app itself as an App Store update, they can just push certain functions to the existing app version.
They did the same recently with the new press and hold function that gives further options on the thumbnails.
I haven’t checked mine for this 5.1 button yet, but will be doing so when I finish work.
That’s correct. For the past several months they’ve been pushing “silent” updates. I believe the update I mentioned is the same one that introduced the press and hold feature.
 
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-Gonzo-

macrumors 65816
Nov 14, 2015
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That’s correct. For the past several months they’ve been pushing “silent” updates. I believe the update I mentioned is the same one that introduced the press and hold feature.
I must say though I’ve not seen any sign of the 5.1 button you speak of.
 

Gator5000e

macrumors 6502
Jan 27, 2018
489
431
I did not see any buttons, but I played A video by movie music composer, Hans Zimmer, doing a live version of a portion of the Dune soundtrack. Fantastic clip, by the way. My AVR indicated that the video was playing Dolby surround and there was music coming out of my rear speakers. It wasn’t particularly mixed for surround sound, but it was playing surround sound. So maybe YouTube did push out an update.
 

priitv8

macrumors 68040
Jan 13, 2011
3,939
595
Estonia
I did not see any buttons, but I played A video by movie music composer, Hans Zimmer, doing a live version of a portion of the Dune soundtrack. Fantastic clip, by the way. My AVR indicated that the video was playing Dolby surround and there was music coming out of my rear speakers. It wasn’t particularly mixed for surround sound, but it was playing surround sound. So maybe YouTube did push out an update.
Can you share the link to that clip, please?
To the best of my knowledge, YouTube does only sport low-bitrate stereo audio, so surround would be a surprise.
Are you sure, your AVR was not simply set to Dolby Surround mode (meaning it was running a Dolby upmixer on stereo source)??
 
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-Gonzo-

macrumors 65816
Nov 14, 2015
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I did not see any buttons, but I played A video by movie music composer, Hans Zimmer, doing a live version of a portion of the Dune soundtrack. Fantastic clip, by the way. My AVR indicated that the video was playing Dolby surround and there was music coming out of my rear speakers. It wasn’t particularly mixed for surround sound, but it was playing surround sound. So maybe YouTube did push out an update.
That’s quite interesting as the only time I see any mention of Dolby on mine is when I play something with Atmos, any other and it just displays as being PCM unless I physically change the sound output to Dolby rather than Auto for Atmos.
Seems a bit odd how you’re seeing it when using YouTube.
 
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Gator5000e

macrumors 6502
Jan 27, 2018
489
431
This is the link I played through my ATV 4K that came through as Dolby. I had to change the quality to 1080P manually but it showed as DD Surround.

 

melapple

macrumors regular
Original poster
Aug 29, 2013
183
20
This is the link I played through my ATV 4K that came through as Dolby. I had to change the quality to 1080P manually but it showed as DD Surround.

When I play this video it’s not showing the 5.1 surround button so I don’t believe this video has surround sound.

By the way, this is the button I’m talking about and the app version section says I’m on version 2.06.22.00/web_20220320_10_RC00
So apparently a release canditate version from March 20th
 

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-Gonzo-

macrumors 65816
Nov 14, 2015
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When I play this video it’s not showing the 5.1 surround button so I don’t believe this video has surround sound.

By the way, this is the button I’m talking about and the app version section says I’m on version 2.06.22.00/web_20220320_10_RC00
So apparently a release canditate version from March 20th
I’ve not seen that button on anything I’ve tried.
Hopefully 5.1 is going to be an option.
 

-Gonzo-

macrumors 65816
Nov 14, 2015
1,003
468
They must be definitely be doing something with the app as just noticed some of my movies are now showing a 4K icon, and this is via my ATVHD in my bedroom.
Not able to check my ATV4K at the moment.
80C8855C-5FC9-44C2-8AD7-596D5FD06FAB.jpeg


Edit:
Just tried playback of some movies showing as 4K and the max resolution is still 1080p.
Am also seeing the 5.1 toggle but doesn’t seem to do anything.
This is using the 1st Gen.
 
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priitv8

macrumors 68040
Jan 13, 2011
3,939
595
Estonia
This is the link I played through my ATV 4K that came through as Dolby. I had to change the quality to 1080P manually but it showed as DD Surround.

Unless you are referring to a paid YouTube service (like YouTube TV), then on the free YT, this video only has low bitrate stereo soundtracks, like every other YT video (on free service):

$ youtube-dl -F https://www.youtube.com/watch?v=_j5GgGdSwjE [youtube] _j5GgGdSwjE: Downloading webpage [info] Available formats for _j5GgGdSwjE: format code extension resolution note 249 webm audio only tiny 47k , webm_dash container, opus @ 47k (48000Hz), 1.07MiB 250 webm audio only tiny 62k , webm_dash container, opus @ 62k (48000Hz), 1.40MiB 251 webm audio only tiny 122k , webm_dash container, opus @122k (48000Hz), 2.74MiB 140 m4a audio only tiny 129k , m4a_dash container, mp4a.40.2@129k (44100Hz), 2.91MiB 160 mp4 256x144 144p 66k , mp4_dash container, avc1.4d400c@ 66k, 24fps, video only, 1.49MiB 394 mp4 256x144 144p 70k , mp4_dash container, av01.0.00M.08@ 70k, 24fps, video only, 1.58MiB 278 webm 256x144 144p 88k , webm_dash container, vp9@ 88k, 24fps, video only, 1.99MiB 133 mp4 426x240 240p 114k , mp4_dash container, avc1.4d4015@ 114k, 24fps, video only, 2.57MiB 395 mp4 426x240 240p 119k , mp4_dash container, av01.0.00M.08@ 119k, 24fps, video only, 2.68MiB 242 webm 426x240 240p 142k , webm_dash container, vp9@ 142k, 24fps, video only, 3.19MiB 134 mp4 640x360 360p 219k , mp4_dash container, avc1.4d401e@ 219k, 24fps, video only, 4.92MiB 396 mp4 640x360 360p 234k , mp4_dash container, av01.0.01M.08@ 234k, 24fps, video only, 5.27MiB 243 webm 640x360 360p 256k , webm_dash container, vp9@ 256k, 24fps, video only, 5.75MiB 135 mp4 854x480 480p 341k , mp4_dash container, avc1.4d401e@ 341k, 24fps, video only, 7.65MiB 244 webm 854x480 480p 393k , webm_dash container, vp9@ 393k, 24fps, video only, 8.83MiB 397 mp4 854x480 480p 414k , mp4_dash container, av01.0.04M.08@ 414k, 24fps, video only, 9.30MiB 136 mp4 1280x720 720p 642k , mp4_dash container, avc1.4d401f@ 642k, 24fps, video only, 14.42MiB 247 webm 1280x720 720p 706k , webm_dash container, vp9@ 706k, 24fps, video only, 15.86MiB 398 mp4 1280x720 720p 836k , mp4_dash container, av01.0.05M.08@ 836k, 24fps, video only, 18.77MiB 399 mp4 1920x1080 1080p 1472k , mp4_dash container, av01.0.08M.08@1472k, 24fps, video only, 33.06MiB 248 webm 1920x1080 1080p 1780k , webm_dash container, vp9@1780k, 24fps, video only, 39.96MiB 137 mp4 1920x1080 1080p 2387k , mp4_dash container, avc1.640028@2387k, 24fps, video only, 53.57MiB 18 mp4 640x360 360p 585k , avc1.42001E, 24fps, mp4a.40.2 (44100Hz), 13.15MiB (best) $
 

Gator5000e

macrumors 6502
Jan 27, 2018
489
431
Does it make a difference that I am a premium subscriber? But I will take your word for it. All I know is the display showed D Surround and I had sound coming out of my rear speakers. As I said it might now have been true surround but a virtual 4 channel stereo.
 

bozzykid

macrumors 68020
Aug 11, 2009
2,229
263
That’s correct. For the past several months they’ve been pushing “silent” updates.
Actually, they push an update about once a week remotely. This is nothing new. You can see the build date in the app's settings under "App version" (look at the date in the version number).
 

911jason

macrumors member
Apr 28, 2020
77
64
Simi Valley, California
I can confirm that 5.1 is indeed available on some video content, although the volume level compared to the stereo track is very low.

Here's video proof:

And this is the video I was watching:
 

911jason

macrumors member
Apr 28, 2020
77
64
Simi Valley, California
Does it make a difference that I am a premium subscriber? But I will take your word for it. All I know is the display showed D Surround and I had sound coming out of my rear speakers. As I said it might now have been true surround but a virtual 4 channel stereo.
Dolby Surround is not from a 5.1 source. It is upmixed stereo. If you're using a Denon AVR, press the info button and it will show you on the left which channels are being received from the source, and on the right which channels are being output.
 

priitv8

macrumors 68040
Jan 13, 2011
3,939
595
Estonia
I can confirm that 5.1 is indeed available on some video content, although the volume level compared to the stereo track is very low.

Here's video proof:

And this is the video I was watching:

Yes, it looks like there are changes happening.
New audio formats that I can recognise are the 256, 380, 328 and 258
The YT app on my appleTV receives nicely the EC-3 stream.
Screen Shot 2022-04-13 at 20.38.57.png
Code:
Priits-i9Mac:Downloads priit$ youtube-dl -F https://www.youtube.com/watch?v=CT7arxQoxoQ
[youtube] CT7arxQoxoQ: Downloading webpage
[youtube] CT7arxQoxoQ: Downloading player 1e29bfc0
[info] Available formats for CT7arxQoxoQ:
format code  extension  resolution note
249          webm       audio only tiny   57k , webm_dash container, opus @ 57k (48000Hz), 12.77MiB
250          webm       audio only tiny   74k , webm_dash container, opus @ 74k (48000Hz), 16.58MiB
140          m4a        audio only tiny  129k , m4a_dash container, mp4a.40.2@129k (44100Hz), 28.92MiB
251          webm       audio only tiny  141k , webm_dash container, opus @141k (48000Hz), 31.59MiB
256          m4a        audio only tiny  195k , m4a_dash container, mp4a.40.5@195k (24000Hz), 43.59MiB
380          m4a        audio only tiny  384k , m4a_dash container, ac-3 @384k (48000Hz), 85.81MiB
328          m4a        audio only tiny  384k , m4a_dash container, ec-3 @384k (48000Hz), 85.81MiB
258          m4a        audio only tiny  387k , m4a_dash container, mp4a.40.2@387k (48000Hz), 86.56MiB
160          mp4        256x144    144p   77k , mp4_dash container, avc1.4d400c@  77k, 30fps, video only, 17.31MiB
278          webm       256x144    144p   85k , webm_dash container, vp9@  85k, 30fps, video only, 19.09MiB
133          mp4        426x240    240p  163k , mp4_dash container, avc1.4d4015@ 163k, 30fps, video only, 36.51MiB
242          webm       426x240    240p  164k , webm_dash container, vp9@ 164k, 30fps, video only, 36.70MiB
134          mp4        640x360    360p  319k , mp4_dash container, avc1.4d401e@ 319k, 30fps, video only, 71.29MiB
243          webm       640x360    360p  343k , webm_dash container, vp9@ 343k, 30fps, video only, 76.74MiB
135          mp4        854x480    480p  510k , mp4_dash container, avc1.4d401f@ 510k, 30fps, video only, 114.06MiB
244          webm       854x480    480p  602k , webm_dash container, vp9@ 602k, 30fps, video only, 134.54MiB
136          mp4        1280x720   720p  851k , mp4_dash container, avc1.4d401f@ 851k, 30fps, video only, 190.24MiB
247          webm       1280x720   720p 1135k , webm_dash container, vp9@1135k, 30fps, video only, 253.55MiB
248          webm       1920x1080  1080p 1989k , webm_dash container, vp9@1989k, 30fps, video only, 444.50MiB
137          mp4        1920x1080  1080p 2513k , mp4_dash container, avc1.640028@2513k, 30fps, video only, 561.43MiB
18           mp4        640x360    360p  632k , avc1.42001E, 30fps, mp4a.40.2 (44100Hz), 141.20MiB
22           mp4        1280x720   720p  980k , avc1.64001F, 30fps, mp4a.40.2 (44100Hz) (best)
 
Last edited:

JeffPerrin

macrumors 6502a
Jul 21, 2014
562
535
Tried this video out on ATV4K tvOS 15 as well as the Android YouTube app on my Sony Bravia (connected to my AVR). Not seeing any signs of 5.1 here...

To be clear, YouTube 5.1 is for their YouTube TV subscription service. I haven't heard any chatter about 5.1 being enabled for standard YouTube user content. Correct me if I'm wrong...
 
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