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[Bug]: The iOS client version 0.9.75-beta plays very slowly for the first time. But the web playback is very fast #2176

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opened 2026-04-25 00:04:39 +02:00 by adam · 10 comments
adam commented 2026-04-25 00:04:39 +02:00
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Originally created by @thsrite on GitHub (Aug 14, 2024).

What happened?

The iOS client version 0.9.75-beta plays very slowly for the first time. It takes about tens of seconds, and the more audiobooks there are, the slower the playback. I have tried both internal and external networks, as well as connecting to other people's servers.
The conclusion is that the iOS client plays very slowly, while the web or Android client plays very fast

What did you expect to happen?

IOS client version 0.9.75-beta accelerates playback speed

Steps to reproduce the issue

  1. Open the iOS client
  2. Find audiobooks with over 2000 episodes that have never been played before
  3. Click on the streaming playback of audiobooks

Audiobookshelf version

server：v2.12.3， iOS：0.9.75-beta

How are you running audiobookshelf?

Docker

What OS is your Audiobookshelf server hosted from?

Linux

If the issue is being seen in the UI, what browsers are you seeing the problem on?

None

Logs

No response

Additional Notes

https://github.com/user-attachments/assets/68e3ad05-ece5-485b-b1e3-88db60a65f5a

Originally created by @thsrite on GitHub (Aug 14, 2024). ### What happened? The iOS client version 0.9.75-beta plays very slowly for the first time. It takes about tens of seconds, and the more audiobooks there are, the slower the playback. I have tried both internal and external networks, as well as connecting to other people's servers. The conclusion is that the iOS client plays very slowly, while the web or Android client plays very fast ### What did you expect to happen? IOS client version 0.9.75-beta accelerates playback speed ### Steps to reproduce the issue 1. Open the iOS client 2. Find audiobooks with over 2000 episodes that have never been played before 3. Click on the streaming playback of audiobooks ### Audiobookshelf version server：v2.12.3， iOS：0.9.75-beta ### How are you running audiobookshelf? Docker ### What OS is your Audiobookshelf server hosted from? Linux ### If the issue is being seen in the UI, what browsers are you seeing the problem on? None ### Logs _No response_ ### Additional Notes https://github.com/user-attachments/assets/68e3ad05-ece5-485b-b1e3-88db60a65f5a
adam added the bug label 2026-04-25 00:04:39 +02:00
adam commented 2026-04-25 00:04:40 +02:00
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@thsrite commented on GitHub (Aug 14, 2024):

The same audiobook will start playing within 3 seconds when it is first played on the web, but it will take about 40 seconds on the iOS client. The above video is the result of the iOS client's 0.9.7-beta test

@thsrite commented on GitHub (Aug 14, 2024): The same audiobook will start playing within 3 seconds when it is first played on the web, but it will take about 40 seconds on the iOS client. The above video is the result of the iOS client's 0.9.7-beta test
adam commented 2026-04-25 00:04:40 +02:00
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@thsrite commented on GitHub (Aug 14, 2024):

I test on these device， the same result， LAN and Internet are tested

  1. ipad pro ios17.1.1 0.9.7-beta
  2. iphone 12 ios16.6.1 0.9.7-beta
  3. iphone x ios16.7 0.9.7-beta

server have two line logs，when i played on ios

start play
[2024-08-14 09:59:10.018] INFO: [PlaybackSessionManager] startSession: Closing open session "中国民间故事" for user "root" (Device: iPhone13,2 / v0.9.75)
end play
[2024-08-14 09:59:48.198] INFO: [SocketAuthority] Socket JBPdB8DjyVAC2m7VAAA9 disconnected from client "root" after 52707ms (Reason: transport close)

@thsrite commented on GitHub (Aug 14, 2024): I test on these device， the same result， LAN and Internet are tested 1. ipad pro ios17.1.1 0.9.7-beta 2. iphone 12 ios16.6.1 0.9.7-beta 3. iphone x ios16.7 0.9.7-beta server have two line logs，when i played on ios `start play` [2024-08-14 09:59:10.018] INFO: [PlaybackSessionManager] startSession: Closing open session "中国民间故事" for user "root" (Device: iPhone13,2 / v0.9.75) `end play` [2024-08-14 09:59:48.198] INFO: [SocketAuthority] Socket JBPdB8DjyVAC2m7VAAA9 disconnected from client "root" after 52707ms (Reason: transport close)
adam commented 2026-04-25 00:04:40 +02:00
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@nichwall commented on GitHub (Aug 14, 2024):

Can you try app version 0.9.76?

@nichwall commented on GitHub (Aug 14, 2024): Can you try app version 0.9.76?
adam commented 2026-04-25 00:04:40 +02:00
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@thsrite commented on GitHub (Aug 14, 2024):

Can you try app version 0.9.76?

I have already tried, the same problem

@thsrite commented on GitHub (Aug 14, 2024): > Can you try app version 0.9.76? I have already tried, the same problem
adam commented 2026-04-25 00:04:40 +02:00
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@nichwall commented on GitHub (Aug 14, 2024):

What file format and what codec is the file? If it is not supported by direct play by the client (in this case iOS), then you will need to wait for the server to start transcoding the file. For example, opus requires transcoding on iOS but not Android or most web browsers.

@nichwall commented on GitHub (Aug 14, 2024): What file format and what codec is the file? If it is not supported by direct play by the client (in this case iOS), then you will need to wait for the server to start transcoding the file. For example, opus requires transcoding on iOS but not Android or most web browsers.
adam commented 2026-04-25 00:04:41 +02:00
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@thsrite commented on GitHub (Aug 14, 2024):

.m4a .mp3 AAC
---- Replied Message ----
FromNicholas @.>Date08/14/2024 21:06 @.> @.>,
@.>SubjectRe: [advplyr/audiobookshelf] [Bug]: The iOS client version 0.9.75-beta plays very slowly for the first time. But the web playback is very fast (Issue #3283)
What file format and what codec is the file? If it is not supported by direct play by the client (in this case iOS), then you will need to wait for the server to start transcoding the file. For example, opus requires transcoding on iOS but not Android or most web browsers.
—
Reply to this email directly, view it on GitHub, or unsubscribe.
You are receiving this because you authored the thread.Message ID: @.***>

@thsrite commented on GitHub (Aug 14, 2024): .m4a .mp3 AAC ---- Replied Message ---- FromNicholas ***@***.***>Date08/14/2024 21:06 ***@***.***> ***@***.***>, ***@***.***>SubjectRe: [advplyr/audiobookshelf] [Bug]: The iOS client version 0.9.75-beta plays very slowly for the first time. But the web playback is very fast (Issue #3283) What file format and what codec is the file? If it is not supported by direct play by the client (in this case iOS), then you will need to wait for the server to start transcoding the file. For example, opus requires transcoding on iOS but not Android or most web browsers. — Reply to this email directly, view it on GitHub, or unsubscribe. You are receiving this because you authored the thread.Message ID: ***@***.***>
adam commented 2026-04-25 00:04:41 +02:00
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@advplyr commented on GitHub (Aug 14, 2024):

The audiobook has 2000 audio files?

@advplyr commented on GitHub (Aug 14, 2024): The audiobook has 2000 audio files?
adam commented 2026-04-25 00:04:41 +02:00
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@thsrite commented on GitHub (Aug 14, 2024):

The audiobook has 2000 audio files?

Yes, fewer files play faster, and more files play slower. The same format of audio files, if audio books only dozens, hundreds of episodes play quickl

@thsrite commented on GitHub (Aug 14, 2024): > The audiobook has 2000 audio files? Yes, fewer files play faster, and more files play slower. The same format of audio files, if audio books only dozens, hundreds of episodes play quickl
adam commented 2026-04-25 00:04:41 +02:00
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@advplyr commented on GitHub (Aug 14, 2024):

I know that part of the problem will be the amount of data that Abs stores and sends for each audio file is way too much. That will be improved over time since we are working on that.
I doubt that is the full issue though. It may be that the iOS audio player is loading too much into memory.

@advplyr commented on GitHub (Aug 14, 2024): I know that part of the problem will be the amount of data that Abs stores and sends for each audio file is way too much. That will be improved over time since we are working on that. I doubt that is the full issue though. It may be that the iOS audio player is loading too much into memory.
adam commented 2026-04-25 00:04:42 +02:00
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@thsrite commented on GitHub (Aug 14, 2024):

I know that part of the problem will be the amount of data that Abs stores and sends for each audio file is way too much. That will be improved over time since we are working on that.
I doubt that is the full issue though. It may be that the iOS audio player is loading too much into memory.

Yes, if there are too many files, the playback will stall, and there is a probability that the ios client will crash

@thsrite commented on GitHub (Aug 14, 2024): > I know that part of the problem will be the amount of data that Abs stores and sends for each audio file is way too much. That will be improved over time since we are working on that. > I doubt that is the full issue though. It may be that the iOS audio player is loading too much into memory. Yes, if there are too many files, the playback will stall, and there is a probability that the ios client will crash
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