supported audio file isnt playable (mp4)

[RobinMeow]

Description of the Problem

tried to play a mp4 (codec AAC LC) file by pressing l (lowercase L)
using mpv outside of termusic works fine

Environment & Versions

❯ termusic --version
Termusic v0.12.1[c]

installed with pacman

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OS: Arch Linux x86_64
Kernel: Linux 6.19.11-arch1-1
Uptime: 11 mins
Packages: 1163 (pacman)
Shell: zsh 5.9
Display (Q27G2WG4): 2560x1440 in 27", 144 Hz [External] *
Display (Q27G2WG4): 2560x1440 in 27", 120 Hz [External]
DE: KDE Plasma 6.6.4
WM: KWin (Wayland)
WM Theme: Breeze
Theme: Breeze (Dark) [Qt]
Icons: breeze-dark [Qt]
Font: Noto Sans (10pt) [Qt]
Cursor: breeze (24px)
Terminal: kitty 0.46.2
Terminal Font: CommitMonoNF-Regular (14pt)
CPU: Intel(R) Core(TM) Ultra 7 265K (20) @ 5.60 GHz
GPU: NVIDIA GeForce RTX 4080 SUPER [Discrete]
Memory: 6.65 GiB / 46.66 GiB (14%)
Swap: 0 B / 4.00 GiB (0%)
Disk (/): 163.57 GiB / 1.78 TiB (9%) - ext4
Local IP (enp129s0): 192.168.178.25/24
Locale: en_US.UTF-8

Logs:
tui log
there were alot of these (the file i tired to play which was listed in the tui is not in the log)

[2026-04-19T22:53:26.599+02:00 WARN termusiclib::new_database]: Error scanning path "/home/ribyn/Music/some tracks/Peter Fox - Haus Am See.mp3": Io(Error { kind: UnexpectedEof, message: "failed to fill whole buffer" })

server log

[2026-04-19T22:53:31.537+02:00 INFO termusicplayback::playlist]: Trying to add 1 tracks to the playlist
[2026-04-19T22:53:31.537+02:00 ERROR termusicplayback::playlist]: unsupported filetype: "/home/ribyn/Music/KPop Demon Hunters mix/Free.mp4"
[2026-04-19T22:53:31.537+02:00 WARN termusicplayback::playlist]: Error adding track: Failed to add to playlist because of: Unsupported File type "Some(mp4)" at "/home/ribyn/Music/KPop Demon Hunters mix/Free.mp4"
[2026-04-19T22:53:31.537+02:00 INFO termusicplayback::playlist]: Added 0 tracks with 1 errors
[2026-04-19T22:53:31.537+02:00 ERROR termusic_server]: Error adding tracks: There are 1 Errors adding tracks to the playlist: [
  Failed to add to playlist because of: Unsupported File type "Some(mp4)" at "/home/ribyn/Music/KPop Demon Hunters mix/Free.mp4",
]

mediainfo

Complete name                            : Free.mp4
Format                                   : dash
Codec ID                                 : dash (iso6/mp41)
File size                                : 2.90 MiB
Overall bit rate                         : 130 kb/s
ID                                       : 1
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 3 min 8 s
Bit rate                                 : 128 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 44.1 kHz
Frame rate                               : 43.066 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 2.87 MiB (99%)

Further notes

just installed it freshly, looking for tui music player, looks promising. dont have any custom configuration.
i did try rebooting after install

[hasezoey]

The issue is simply that we do a quick file extension check (instead of checking with the actual backend if it is supported), and mp4 is currently not allowed as a filetype (though mp3, m4a and aac are). See this code
Note that if that check is ignored, mp4 files are actually supported, though unless you modify code there is currently no bypass.

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On a unrelated note, could you provide a sample file which has the following error:

[2026-04-19T22:53:26.599+02:00 WARN termusiclib::new_database]: Error scanning path "/home/ribyn/Music/some tracks/Peter Fox - Haus Am See.mp3": Io(Error { kind: UnexpectedEof, message: "failed to fill whole buffer" })

To be able to investigate and fix the error?

[RobinMeow]

sample file meaning, you want the music file or the log file?
i dont have termusic installed anymore, remind me kindly where do i find the log file?
should it still exist ill gladly provide it

[hasezoey]

sample file meaning, you want the music file or the log file?

Sample music file, so that it can be tested against.

[RobinMeow]

Peter Fox - Haus Am See.mp3

file seems to be invalid, tried emailing it to you, but apparently its zero bytes. which would kind of explain why its not playable.

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Update: looked for a non-corrupted file but could not find it. dont think it is worth pursuing for you