I just received this email from Apple:
Apple TV is here, and podcasts are making a big move into the living room. We want all of them to look as good as possible, so we have three video formatting recommendations for you… Recommendations for Formatting Video Podcasts 1. If you’re encoding your video podcast at 320×240, please increase the resolution to either 640×480 or 640×360 (depending on the aspect ratio of your source files). Why? Because video podcasts at this resolution look great on Apple TV and still port to video iPods. Lower resolution podcasts might also work on both platforms, but they don’t look nearly as good on a widescreen TV. As always, make sure to test any encoding changes you make to ensure device compatibility. QuickTime 7.1’s “Export to iPod” function will ensure that a video file is encoded at a width of 640 and is iPod-compatible. 2. It’s best not to create two different podcast feeds for different resolutions. By doing so, you dilute the popularity of your podcast and reduce exposure in our charts. It’s better to have one feed high in the charts than two that are lower. 3. If your source files are 16:9, stick with that aspect ratio. Don’t add letterboxing to make them 4:3. By doing so, you prevent the video from expanding to fill a 16:9 widescreen TV and instead end up with black space on all four sides. Also, your original source files should be at least 640 pixels wide. Of course these are just recommendations. We understand that there are good reasons for 320×240 (bandwidth bills) and 720p (looks fantastic). Do whatever makes the most sense for your show. For more information on formatting video, see the recently updated spec: http://www.apple.com/itunes/store/podcaststechspecs.htmlPodcasts are no longer handcuffed to computer screens and ipods. Now anyone with a camera, a computer, and a great idea can be broadcast on TV sets in living rooms globally. If you’re considering getting into video podcasting, keep these specs in mind as you produce your show. Television-accessibility opens up a lot of doors for podcasting, and will help bring it even more into the media big leagues. What’s more, online communities are creating entertainment together. Check out this fantastic piece of kids’ programming that Charlie is working on with the Vimeo community: We live in a time where you can create your own TV show with people thousands of miles away that you’ve never met and distribute it to audiences across the globe. Heck. Yes.