[REGRESSION] [7023] Apple TV Audio Bitrade downgrade

kingeilert

With SF 7.0.2.2 and 7.0.2.3 audio bitrade is 448 with 7.0.1.9 i get audio bitrade 768

Germania

I can confirm that the same for me (7019=768, 7023=448) ..
.. with same selection: English Atmos 5.1

I noticed different selection in log (atmos vs atmos_vod)
7023 "Record add to queue -- Audio:{\"bandwidth\":0,\"channel\":16,\"codecs\":\"atmos\"
7019 "Record add to queue -- Audio:{\"bandwidth\":0,\"channel\":16,\"codecs\":\"atmos_vod\"

0xFeedBeef

Germania does hacking the tasklist work? I’d try it myself but not near my dl computer…

Germania

0xFeedBeef does hacking the tasklist work?

Nope - if I add to queue, close SF and add _vod manually ..

.. I get unchanged Atmos 448 with SF 7023

To ensure nothing was missed, I added with 7019 to the queue
and started it with 7023: This also results in 448

On that occasion, I noticed that 7019 offers German Atmos:

I can’t see this offer with 7023 (same account/connection):

Perhaps 7023 get the offer from US - why is the bitrate differently?
Maximum H265 SDR with 7023 = 30390 kbps
Maximum H265 SDR with 7019 = 30710 kbps

0xFeedBeef

Germania hmmm… doesn’t the log file log what manifest (the exact URL) it fetches?

0xFeedBeef

Germania

Interesting, with 7019, I get:

[Info]: [default] videotrackinfos size : 468
[Info]: [default] audiotrackinfos size : 324
[Info]: [default] subtitle trackinfos size : 270

with 7023:

[Info]: [default] videotrackinfos size : 159
[Info]: [default] audiotrackinfos size : 324
[Info]: [default] subtitle trackinfos size : 90

Germania Perhaps 7023 get the offer from US - why is the bitrate differently?
Maximum H265 SDR with 7023 = 30390 kbps
Maximum H265 SDR with 7019 = 30710 kbps

It’s probably down to the audio track bitrate

Edit: or maybe not, don’t know if Apple’s bandwidth requirement applies only to video or to combined video+audio:-

7019:
Resolution: "{\"bandwidth\":30913221...
7023:
Resolution: "{\"bandwidth\":30593221

Germania

0xFeedBeef doesn’t the log file log what manifest (the exact URL) it fetches

The only difference (apart from the token) is: &webbrowser=true&xapsub=accepts-css

7019
https://play-edge.itunes.apple.com/WebObjects/MZPlayLocal.woa/hls/subscription/playlist.m3u8?cc=IN&svcId=tvs.vds.4054&a=1869180647&isExternal=true&t=...&brandId=tvs.sbd.4000&id=1313627994&l=en-GB&aec=UHD
7023
https://play-edge.itunes.apple.com/WebObjects/MZPlayLocal.woa/hls/subscription/playlist.m3u8?cc=IN&svcId=tvs.vds.4054&a=1869180647&isExternal=true&t=...&brandId=tvs.sbd.4000&id=1313627994&l=en-GB&aec=UHD&webbrowser=true&xapsub=accepts-css

Germania

3840×1606 hvc1.2.20000000.H150.B0 regular avg: 24.5 Mbps max: 30.2 Mbps

0xFeedBeef don’t know if Apple’s bandwidth requirement applies
only to video or to combined video+audio

combined - the info in my m3u8 is the same with 7019+7023:

Video + Atmos AVERAGE-BANDWIDTH=24944105,_AVG-BANDWIDTH=24944105,BANDWIDTH=30611512 Video + AC3 AVERAGE-BANDWIDTH=24880102,_AVG-BANDWIDTH=24880102,BANDWIDTH=30549120 Video + AAC AVERAGE-BANDWIDTH=24662853,_AVG-BANDWIDTH=24662853,BANDWIDTH=30392133

0xFeedBeef Resolution: "{\“bandwidth\”:30593221

It’s DoVi + Atmos (atmos_vod !)
AVERAGE-BANDWIDTH=25067721,_AVG-BANDWIDTH=25067721,BANDWIDTH=30593221

0xFeedBeef

Germania so it computes the correct bitrate for _vod, but fetches regular atmos without the _vod?

Germania

0xFeedBeef so it computes the correct bitrate for _vod, but fetches regular atmos without the _vod?

recorded correctly

0xFeedBeef

Germania so that”s even more confusing: why wasn’t SF fetching the correct audio after a hack when it’s there in the manifest where it gets the literal bandwidth requirement from? What’s inside the linked manifest?

Germania

0xFeedBeef why wasn’t SF fetching the correct audio after a hack

I can only say that atmos_vod is ignored with 7023 (that’s why you can’t get 768)

0xFeedBeef What’s inside the linked manifest?

Where can I find the used ?? - You see the relevant part of m3u8 above ..
.. the 7023 log is full of bullsh*t (4x larger then 7019)

example: >50 lines with
[ENTER] parseAudioChannelCount, channels= "2"
has no added value

0xFeedBeef

Germania I meant what’s inside this:

Germania

0xFeedBeef I meant what’s inside this:

This playlist contain only the 14,4 GB DoVi Video ..
.. Audio is separate and the only en atmos_vod in playlist above is the used 448

0xFeedBeef

Germania hmmm… the size of audiotracksinfo in 7019 and 7023 is the same… 😕

Germania

My 7019 dl is 200MB larger then with 7023

et voilá

0xFeedBeef

Germania I’m not disputing that, and it’s quite obvious given the bitrate difference. What I was saying was that audiotrackinfos size in the logs is the same for both, and I hazard a guess that’s the size of the audio track info in the manifest file

Wilson.Wang

I will ask the dev to check it again.

Wilson

0xFeedBeef

For what it’s worth: with 7024, Atmos bitrate for purchased content is 768 kb/s (finally got around to testing)