Enhancement: Extract audio technical properties (bitrate, sample rate, duration) #21
Description
Summary
exiftool extracts technical audio properties that imx currently doesn't expose.
Missing Properties (MP3)
| Property | exiftool Value | imx |
|---|---|---|
| MPEGAudioVersion | 1 |
- |
| AudioLayer | 3 |
- |
| AudioBitrate | 192 kbps |
- |
| SampleRate | 44100 |
- |
| ChannelMode | Single Channel |
- |
| Duration | 5.07 s (approx) |
- |
Use Cases
- Media library applications need bitrate/sample rate info
- Duration is essential for audio players
- Channel mode (mono/stereo) affects playback
Technical Approach
MP3 frame header contains: bitrate, sample rate, channel mode
Duration = file size / bitrate (approximate)
Acceptance Criteria
- Extract audio properties from MP3 frame headers
- Add similar support for FLAC (sample rate, channels from StreamInfo)
- Consider adding to MP4/M4A as well
- Unit tests
Priority
Low - Enhancement, not a bug. Marking as such.
Note
This is an enhancement, not a bug fix. Lower priority than the decoding issues.