mp3tag won't let me change the tags on my MP4 files.
I get an error message saying "Cannot write to file..."
See e.g. here:
Hey,
well, i have the same problem, since version 3.29, I have to reencode all of my .m4b files to work, I am converting the capters from quick time to nero, this fixes the problem. In the log, I can see the following:
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Mp3tag v3.29 - 03.05.2025 - 04:33:42
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OS-Version: Windows 11 (build 22631), 64-bit
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Build: Mar 28 2025 13:54:50 (64-bit)
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AppPath: 724.526.596.096 Bytes frei (C:\Program Files\Mp3tag\)
DataPath: 724.526.596.096 Bytes frei (C:\Users\chpro\AppData\Roaming\Mp3tag\data\)
TempPath: 724.526.596.096 Bytes frei (C:\Users\chpro\AppData\Local\Temp\Mp3tag v3.29\)
================================================================================
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Anthony Ryan - Der staehlerne Bund 01 - Der Paria (Ungekuerzt)\Anthony Ryan - Der staehlerne Bund 01 - Der Paria (Ungekuerzt).m4b is reported as 1299920112 from the system (it's more than 1GB)
0000B02C at 0:03.093832
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Anthony Ryan - Der staehlerne Bund 02 - Der Maertyrer (Ungekuerzt)\Anthony Ryan - Der staehlerne Bund 02 - Der Maertyrer (Ungekuerzt).m4b is reported as 1677987783 from the system (it's more than 1GB)
0000B02C at 0:03.093892
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Anthony Ryan - Der staehlerne Bund 03 - Der Verraeter (Ungekuerzt)\Anthony Ryan - Der staehlerne Bund 03 - Der Verraeter (Ungekuerzt).m4b is reported as 2398459105 from the system (it's more than 1GB)
0000B02C at 0:03.093922
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Jens Forwick - Die Kalandaha Chroniken 06 - Builder (Ungekuerzt).part1\Jens Forwick - Die Kalandaha Chroniken 06 - Builder (Ungekuerzt).part1.m4b is reported as 1172021342 from the system (it's more than 1GB)
0000B02C at 0:03.093959
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Jens Forwick - Die Kalandaha Chroniken 07 - Dealbreaker (Ungekuerzt).part1\Jens Forwick - Die Kalandaha Chroniken 07 - Dealbreaker (Ungekuerzt).part1.m4b is reported as 1094450990 from the system (it's more than 1GB)
0000B02C at 0:03.093985
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Marc Elsberg - Der Fall des Praesidenten (Ungekuerzt)\Marc Elsberg - Der Fall des Praesidenten (Ungekuerzt).m4b is reported as 1577303594 from the system (it's more than 1GB)
0000B02C at 0:03.094012
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Perry Rhodan - Silber Edition - Folge 169 - Imago.part1\Perry Rhodan - Silber Edition - Folge 169 - Imago.part1.m4b is reported as 1380501933 from the system (it's more than 1GB)
0000B02C at 0:03.094042
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file E:\Audio\temp\untagged\Sean Oswald - Willkommen im Multiversum 03 - Kollaps (Ungekuerzt).part1\Sean Oswald - Willkommen im Multiversum 03 - Kollaps (Ungekuerzt).part1.m4b is reported as 1841060574 from the system (it's more than 1GB)
0000B02C at 0:03.094118
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MESSAGE
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File: y:\projects\_audio\smp4file.cpp
Line: 589
Message: write: Manipulation of MP4 QT chapters is not supported, please remux the file to another format (E:\Audio\temp\untagged\Anthony Ryan - Der staehlerne Bund 01 - Der Paria (Ungekuerzt)\Anthony Ryan - Der staehlerne Bund 01 - Der Paria (Ungekuerzt).m4b)
000035EC at 0:22.212697
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MESSAGE
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File: y:\projects\_audio\smp4file.cpp
Line: 589
Message: write: Manipulation of MP4 QT chapters is not supported, please remux the file to another format (E:\Audio\temp\untagged\Anthony Ryan - Der staehlerne Bund 01 - Der Paria (Ungekuerzt)\Anthony Ryan - Der staehlerne Bund 01 - Der Paria (Ungekuerzt).m4b)
00009F58 at 0:30.205332
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MESSAGE
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File: y:\projects\_audio\smp4file.cpp
Line: 589
Message: write: Manipulation of MP4 QT chapters is not supported, please remux the file to another format (E:\Audio\temp\untagged\Anthony Ryan - Der staehlerne Bund 02 - Der Maertyrer (Ungekuerzt)\Anthony Ryan - Der staehlerne Bund 02 - Der Maertyrer (Ungekuerzt).m4b)
000002C4 at 0:37.938955
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MESSAGE
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File: y:\projects\_audio\smp4file.cpp
Line: 589
Message: write: Manipulation of MP4 QT chapters is not supported, please remux the file to another format (E:\Audio\temp\untagged\David Baldacci - Memory Man 04 - Downfall (Ungekuerzt).part1\David Baldacci - Memory Man 04 - Downfall (Ungekuerzt).part1.m4b)
0000AC5C at 1:55.094348
Same error for me, downgrading from 3.29 to 3.28 solved the issue.
================================================================================
Mp3tag v3.29 - 24.05.2025 - 23:43:24
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OS-Version: Windows 10 (build 19045), 64-bit
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Build: Mar 28 2025 13:54:50 (64-bit)
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AppPath: 14.452.219.904 Bytes frei (C:\Program Files\Mp3tag\)
DataPath: 14.452.219.904 Bytes frei (C:\Users\root\AppData\Roaming\Mp3tag\data\)
TempPath: 14.452.219.904 Bytes frei (C:\Users\root\AppData\Local\Temp\Mp3tag v3.29\)
================================================================================
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MESSAGE
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File: y:\projects\mp3tag\mtmainframeupdatehandlers.cpp
Line: 108
Message: Size of file Z:\Downloads\Audiobooks Processor\auto-m4b\untagged\Les Misérables [Christine Donougher] [Adeel Akhtar, Natalie Simpson, Adrian Scarborough, Emma Fielding, John Owen-Jones]\Les Misérables Penguin Classics.m4b is reported as 1877173972 from the system (it's more than 1GB)
000008E4 at 0:01.868833
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MESSAGE
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File: y:\projects\_audio\smp4file.cpp
Line: 589
Message: write: Manipulation of MP4 QT chapters is not supported, please remux the file to another format (Z:\Downloads\Audiobooks Processor\auto-m4b\untagged\From Eternity to Here - The Quest for the Ultimate Theory of Time\From Eternity to Here - The Quest for the Ultimate Theory of Time.m4b)
000012F8 at 1:48.781188
I've just released Mp3tag v3.30 and relaxed this recent change that prevents retagging of MP4 files with > 255 QT chapters to not take effect if the global tag is changed (and not the individual chapters).