Mon, 3 Dec 2007, 17:00
My music is playing back too fast - it sounds like Chipmunks!
Do the MP3s on your site sounding like Chip and Dale (the chipmunks) are doing covers of your favourite songs? The reason is down to how you initially encoded your songs. It doesn't happen often, but it does happen.
Files encoded using 'standard' MP3 format at CONSTANT bit rate will normally play without issue, provided the sample rate is a multiple of 44.1kHz - other 'interpolating' sample rates cause Flash Player to speed up the playback.
So, how do you fix this problem? You have two choices...
IMPORTANT Update 21 Dec 07: Especially if your page lengths remain constant throughout your site in IE7: Please just go to Adobe and download the latest Flash player and this should fix get the chipmunks out of your site and give you variable page lengths back. If you downloaded the beta version (in article below) you will find a fix with instructions in comment #2 beneath this post.
You can fix it now: Sample rates of 96000, 44100, 22050 and 11025 samples/second at 8, 16 and 32 bit depth will all work fine. So if you wish to remove the chipmunks from your site you will have to re-encode the offending files using the sample rates given above with one of the constant bit rates. If you are interested there is more information about this bug available.
Adobe will fix it later: This bug will be fixed soon by the release of Flash Player Update 3 which is currently at the Beta 2 stage which will play back any MP3 sampling rate. So, no more chipmunks. Ever. But this will require all your visitors to have downloaded the soon to be released Flash update for this to work, i.e. your visitors must have the update to hear your music correctly.
So you have an option. You can re-encode your music and remove the chipmunks now, or you can wait for the fix to hit the masses.