Low-bandwidth podcasts?

Allow me, just for a moment, to geek out about the Spark podcast. Each 27-minute podcast episode of Spark is about 13 megabytes. The files (like most other CBC podcasts) are 64kbps constant-bit-rate MP3s.

On my broadband connection to the internet, downloading a 13 megabyte file takes a couple of seconds, and it’s a drop in the bucket towards my 60 gigabyte/month internet plan.

But if you’re on dial-up, or if you have bandwidth cap on your internet connection, 13 megabytes per episode may be a lot. According to Jackie, bandwidth in northern Canada can be very expensive:

Because of this, the WAY we use the internet is very different. Limited bandwidth (and its costs: $60 for 2 gigabytes, $120 for 5 gigabytes, $400 for 20 gigabytes) rules your usage. Once you hit your monthly limit, you get knocked down to dial-up speeds (though the max speed on the lowest plan up here is 256 kbps).

So with that in mind, we’re planning to launch a more compressed version of Spark for the bandwidth-conscious. I ran a few tests today, and I think I can make a reasonable-sounding 32kbps MP3s that’s half the size of a regular Spark episode.

Perhaps down the line, someone will develop an online MP3 transcoding service with this in mind. Enter a podcast feed, and it would spit out a new feed with links to more highly compressed MP3s. I’d gladly use such a service :)

Do you know someone who doesn’t listen to podcasts because they’re on dial-up? Would low-bandwidth podcasts help? Also, to the podcasters and MP3 geeks out there: suggested encoding settings?

[Original image by stshank]