complexlogic
commented
2 years ago This was a feature request in loudgain too, see loudgain/7. There is some good discussion there of benefits and drawbacks.
Adding a simple check if ReplayGain tags exist is relatively straightforward. Verifying that the ReplayGain tags are complete, correct, and match the requested settings is much more complicated. I would prefer not to validate the correctness of the tags due to the large amount of additional logic required, and potential to introduce bugs.
We could have a simple option to check if tags exist only. The user would be responsible to ensure that their files with with pre-existing ReplayGain tags are valid and and match their current settings (e.g. target loudness).
I made a quick experimental branch for the feature skip_existing and pushed it. Get it with:
git clone -b skip_existing https://github.com/complexlogic/rsgainYou can invoke the feature with -S or --skip-existing in Easy Mode. It works by checking if the REPLAYGAIN_TRACK_GAIN tag exists before scanning. If it exists, the scan is skipped for that file. I've only implemented it for MP3 and FLAC/Ogg/Opus for now. I can extend it to the other formats later if this feature is successful.
Please let me know what you think.
diizzyy
A nice feature would be if rsgain could offer an option to skip files that already have tagging instead of rescanning everything