Unspecified error "[ERROR] Couldn't write to:" when handling .m4a files

[Sammala]

I'm currently adding RG tags to my entire audio library. For most files this worked fine, but I can't add RG tags to any .m4a files using rsgain v3.5.3.

ffprobe output of an example file that I get the error [ERROR] Couldn't write to: [Filepath] with (ignore the existing RG tags, I checked to see if MusicBee was able to add tags and it worked just fine):

ffprobe -i "Now We Are Free - Gladiator.m4a"

ffprobe version 7.1-essentials_build-www.gyan.dev Copyright (c) 2007-2024 the FFmpeg developers
  built with gcc 14.2.0 (Rev1, Built by MSYS2 project)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-libfreetype --enable-libfribidi --enable-libharfbuzz --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-dxva2 --enable-d3d11va --enable-d3d12va --enable-ffnvcodec --enable-libvpl --enable-nvdec --enable-nvenc --enable-vaapi --enable-libgme --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-librubberband
  libavutil      59. 39.100 / 59. 39.100
  libavcodec     61. 19.100 / 61. 19.100
  libavformat    61.  7.100 / 61.  7.100
  libavdevice    61.  3.100 / 61.  3.100
  libavfilter    10.  4.100 / 10.  4.100
  libswscale      8.  3.100 /  8.  3.100
  libswresample   5.  3.100 /  5.  3.100
  libpostproc    58.  3.100 / 58.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Now We Are Free - Gladiator.m4a':
  Metadata:
    major_brand     : M4A
    minor_version   : 512
    compatible_brands: isomiso2
    encoder         : Lavf58.29.100
    replaygain_track_gain: +0.17 dB
    replaygain_track_peak: 1.011301
    replaygain_album_gain: +0.17 dB
    replaygain_album_peak: 1.011301
  Duration: 00:04:14.12, start: 0.000000, bitrate: 255 kb/s
  Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 253 kb/s (default)
      Metadata:
        handler_name    : SoundHandler
        vendor_id       : [0][0][0][0]
      Side data:
        replaygain: track gain - 0.170000, track peak - 0.000024, album gain - 0.170000, album peak - 0.000024,

The .bat file I'm using to run rsgain:

@echo off
setlocal

cd /d "%~dp0"
set "currentDir=%cd%"

"C:\Users\user\Programme\RSGain\rsgain.exe" easy -p "C:\Users\user\Programme\RSGain\presets\EigeneStandard.ini" "%currentDir%"

pause
endlocal

(The error also happens when I run the rsgain command directly.)

The output I get is:

[OK] Applying preset 'C:\Users\user\Programme\RSGain\presets\EigeneStandard.ini'...
[OK] Building directory tree...
[OK] Found 1 directory...
[OK] Scanning directory for files..._
[OK] Scanning 'E:\Daten\Eigene Musik\test\Now We Are Free - Gladiator.m4a'
[OK] Container: QuickTime / MOV [mov,mp4,m4a,3gp,3g2,mj2]
[OK] Stream #0: AAC (Advanced Audio Coding), 44.100 Hz, 2 ch
 100% [================================================]
[ERROR] Couldn't write to: E:\Daten\Eigene Musik\test\Now We Are Free - Gladiator.m4a

Track: E:\Daten\Eigene Musik\test\Now We Are Free - Gladiator.m4a
  Loudness:   -18.16 LUFS
  Peak:     1.000000 (0.00 dB)
  Gain:         0.00 dB  (adjusted to prevent clipping)

Album:
  Loudness:   -18.16 LUFS
  Peak:     1.000000 (0.00 dB)
  Gain:         0.00 dB  (adjusted to prevent clipping)

Scanning Complete
Time Elapsed:      00:00:00
Files Scanned:     1
Clip Adjustments:  1 (100.0% of files)
Average Gain:      0.00 dB
Average Peak:      1.000000 (0.00 dB)
Negative Gains:    0 (0.0% of files)
Positive Gains:    1 (100.0% of files)

My .ini looks like this:

[Global]
TagMode=i
Album=true
TargetLoudness=-18
ClipMode=p
MaxPeakLevel=0.0
TruePeak=false
Lowercase=false
ID3v2Version=keep
OpusMode=s
PreserveMtimes=true

MusicBee and foobar2000 tag the file without any errors or warnings. The file is also not set to read-only, and the problem occurs with any .m4a file that I have. I'm on Windows 10 and the E: drive is a local NTFS-formatted SSD.

Let me know if you'd like any more infos.

[complexlogic]

I'm unable to reproduce this. Can you upload the file so I can inspect it?

[Sammala]

@complexlogic Sure! Password is your username; the link expires in 3 days

[complexlogic]

I can't access the file. Are you sure the password is correct?