Download of book with a lot of mp3s not working #407

New Issue

2026-04-24T23:19:59+02:00

adam commented

2026-04-24 23:19:59 +02:00

Originally created by @stiefelus on GitHub (Jan 18, 2023).

Trying to download a book consisting of a huge number of mp3s (over 500 in my Case) is actually killing the Download function entirely right now. The phones download notifications go crazy, but the (Android) app itself shuts down and never starts showing that a download is in Progress after reopening. In fact only about 370 of the 500+ parts really get downloaded in the end and never really arive in the destination folder nor is the finished but incomplete download linked anywhere.
The only way to then remove this partial Download is to go into the apps preferences, deleting all app data.
Would bei great If there could be an fix for this one.

Thank you!

Originally created by @stiefelus on GitHub (Jan 18, 2023). Trying to download a book consisting of a huge number of mp3s (over 500 in my Case) is actually killing the Download function entirely right now. The phones download notifications go crazy, but the (Android) app itself shuts down and never starts showing that a download is in Progress after reopening. In fact only about 370 of the 500+ parts really get downloaded in the end and never really arive in the destination folder nor is the finished but incomplete download linked anywhere. The only way to then remove this partial Download is to go into the apps preferences, deleting all app data. Would bei great If there could be an fix for this one. Thank you!

adam added the bug label 2026-04-24 23:19:59 +02:00

adam closed this issue

2026-04-24 23:20:00 +02:00

adam commented

2026-04-24 23:20:01 +02:00

@gh0sti commented on GitHub (Jan 22, 2023):

Would it make sense at this point to use the convert to m4b which merges all the tracks into one file?

@gh0sti commented on GitHub (Jan 22, 2023): Would it make sense at this point to use the convert to m4b which merges all the tracks into one file?

adam commented

2026-04-24 23:20:02 +02:00

@advplyr commented on GitHub (Jan 22, 2023):

I'm working on a new download manager that should hopefully handle this. It is a big rewrite so I can't give an ETA.

@advplyr commented on GitHub (Jan 22, 2023): I'm working on a new download manager that should hopefully handle this. It is a big rewrite so I can't give an ETA.

adam commented

2026-04-24 23:20:03 +02:00

@stiefelus commented on GitHub (Jan 22, 2023):

Would it make sense at this point to use the convert to m4b which merges all the tracks into one file?

Tried this also, strangely did not finish the Job. There was a correct m4b file consisting of all the content, but the book was now displayed as empty in the shelf. Rescan of the folder did not solve the issue.
In this case had to remove and then re-deploy the folder and it then was fine.
Maybe I try this again, cant definetly say If there was a shutdown of the Server at the end of this Task which would explain the result on this end

@stiefelus commented on GitHub (Jan 22, 2023): > Would it make sense at this point to use the convert to m4b which merges all the tracks into one file? Tried this also, strangely did not finish the Job. There was a correct m4b file consisting of all the content, but the book was now displayed as empty in the shelf. Rescan of the folder did not solve the issue. In this case had to remove and then re-deploy the folder and it then was fine. Maybe I try this again, cant definetly say If there was a shutdown of the Server at the end of this Task which would explain the result on this end

adam commented

2026-04-24 23:20:03 +02:00

@stiefelus commented on GitHub (Jan 22, 2023):

I'm working on a new download manager that should hopefully handle this. It is a big rewrite so I can't give an ETA.

Thank you! Great Work by the way. Love audiobookshelf so far despite some little hickups!

@stiefelus commented on GitHub (Jan 22, 2023): > I'm working on a new download manager that should hopefully handle this. It is a big rewrite so I can't give an ETA. Thank you! Great Work by the way. Love audiobookshelf so far despite some little hickups!

adam commented

2026-04-24 23:20:04 +02:00

@gh0sti commented on GitHub (Jan 23, 2023):

Would it make sense at this point to use the convert to m4b which merges all the tracks into one file?

Tried this also, strangely did not finish the Job. There was a correct m4b file consisting of all the content, but the book was now displayed as empty in the shelf. Rescan of the folder did not solve the issue. In this case had to remove and then re-deploy the folder and it then was fine. Maybe I try this again, cant definetly say If there was a shutdown of the Server at the end of this Task which would explain the result on this end

There's a windows/mac app called Audiobookconverter that is a local app that can merge all the tracks into a .m4b

I have used this to convert multi-track mp3 books into one file. https://github.com/yermak/AudioBookConverter

@gh0sti commented on GitHub (Jan 23, 2023): > > Would it make sense at this point to use the convert to m4b which merges all the tracks into one file? > > Tried this also, strangely did not finish the Job. There was a correct m4b file consisting of all the content, but the book was now displayed as empty in the shelf. Rescan of the folder did not solve the issue. In this case had to remove and then re-deploy the folder and it then was fine. Maybe I try this again, cant definetly say If there was a shutdown of the Server at the end of this Task which would explain the result on this end There's a windows/mac app called Audiobookconverter that is a local app that can merge all the tracks into a .m4b I have used this to convert multi-track mp3 books into one file. https://github.com/yermak/AudioBookConverter

adam commented

2026-04-24 23:20:07 +02:00

@advplyr commented on GitHub (Jan 28, 2023):

Downloader has been re-done. I've tested with hundreds of files and it is working well. Also, it will only download 1 audio file at a time so there will be only 1 notification. The notification will automatically go away once the download is finished.

A currently downloading files page is added by pressing the download icon in the app bar.

@advplyr commented on GitHub (Jan 28, 2023): Downloader has been re-done. I've tested with hundreds of files and it is working well. Also, it will only download 1 audio file at a time so there will be only 1 notification. The notification will automatically go away once the download is finished. A currently downloading files page is added by pressing the download icon in the app bar.

adam commented

2026-04-24 23:20:10 +02:00

@advplyr commented on GitHub (Jan 31, 2023):

This should be fixed now in v0.9.61-beta but let me know how it goes.

@advplyr commented on GitHub (Jan 31, 2023): This should be fixed now in [v0.9.61-beta](https://github.com/advplyr/audiobookshelf-app/releases/tag/v0.9.61-beta) but let me know how it goes.

adam commented

2026-04-24 23:20:14 +02:00

@stiefelus commented on GitHub (Feb 9, 2023):

@advplyr The new release is a great improvement in terms of reliability! Thanks for that. In a perfect scenario I would like to have the option of activating simultaneous downloads of 3 mp3s or something similar. This would increase the download speed a bit, which is much slower with only one simultaneous mp3 download.

@stiefelus commented on GitHub (Feb 9, 2023): @advplyr The new release is a great improvement in terms of reliability! Thanks for that. In a perfect scenario I would like to have the option of activating simultaneous downloads of 3 mp3s or something similar. This would increase the download speed a bit, which is much slower with only one simultaneous mp3 download.

adam commented

2026-04-24 23:20:15 +02:00

@ooii commented on GitHub (Nov 25, 2025):

Has this been implemented? I'm on the iOS version and it's still downloading all the files at the same time.
Also, downloaded percentage of files may decrease a lot, like from 70 to 9.

@ooii commented on GitHub (Nov 25, 2025): Has this been implemented? I'm on the iOS version and it's still downloading all the files at the same time. Also, downloaded percentage of files may decrease a lot, like from 70 to 9.

adam referenced this issue

2026-04-24 23:38:33 +02:00

Volume boost/equalizer #788

adam referenced this issue

2026-04-25 00:00:40 +02:00

[PR #1776] Audio equalizer for Android #1695

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Reference: starred/audiobookshelf-app#407