Feature Suggestion: Validate Bitrate

Patch's Avatar

Patch

26 Aug, 2019 12:24 PM

So, I’ve found some .mp3 files in my collection that have tags showing one bitrate, but that have actually been encoded at a lower bit rate.

I’d love a feature in BeaTunes that would allow for checking/validating the stored bitrate vs. the actual bitrate of the encoded audio.

That would allow playlists to be created to allow me to replace low bitrate files with new, high quality files.

I’m sure I have a bunch of files like this, but there’s no watch batch identify them...

  1. Support Staff 1 Posted by hendrik on 29 Aug, 2019 06:05 AM

    hendrik's Avatar

    Hey there,

    have tags showing one bitrate, but that have actually been encoded at a lower bit rate.

    Typically the bit rate is not encoded in tags, but in the mp3 frame. Is it that what you meant? How can you tell that the "tags" are wrong?
    Also, there is of course variable bit rate (VBR), which means there isn't really one bitrate.

    Cheers,

    -hendrik

  2. 2 Posted by Patch on 29 Aug, 2019 10:29 AM

    Patch's Avatar

    Yes - I meant the frame (not tag).

    I’ve played some 320kbps .mp3s on great speakers and found they sounded really bad.

    So, I ran a spectrum analysis on that .mp3, and the results showed that it was actually 96kbps. A-ha! I knew it...!

    So this 96kbps file had been converted to 320kbps, but, obviously, retained the sound quality of the original 96kbps file.

    So, short of spectrum analysing my whole library one at a time, I looked into batch verifying the bitrate. There is a piece of software which does this called “Fakin’ The Funk”, and I wondered if, seeing as BeaTunes can batch analyse tempo and key, it could also very the actual bitrate of the file (original encoding) against the displayed bitrate, to identify those files that had been re-encoded/converted to give the illusion of a hi-quality .mp3...

  3. 3 Posted by Patch on 29 Aug, 2019 10:30 AM

    Patch's Avatar

    “...could also very the actual bitrate of the file...”

    That should be “verify”...

  4. Support Staff 4 Posted by hendrik on 29 Aug, 2019 11:08 AM

    hendrik's Avatar

    What Fakin' The Funk does not seem trivial and would require some R&D.
    For the moment, I unfortunately cannot put that on the roadmap.

  5. 5 Posted by Patch on 29 Aug, 2019 11:45 AM

    Patch's Avatar

    Understood. Thanks for the heads-up.

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