I hope you will support the .ts container. 90+% of my videos have been recorded with the HDPVR and they are all .ts files, they should meet all the other specs, h.264/ac3 and should fit in the recommended bitrate.
Thanks for the update and support with subtitles! I'll give it a try.
I'd recommend keeping the average bitrate below 8mbps or so with peaks no higher than 12 or 14mpbs.
If you have problems with high-bitrate mkv ( peaks up to 15 or 16mpbs) , rest assured that an update is coming to help with this.
I guess I'm going to be the first one out here to express extreme disapointment at these bitrates. 8mbps is about standard for DVD. Why would a great box like this, which can support 1080p, only be able to handle an average of 8mpbs???
The brain surgeons at Apple use H.264 in .mp4/.m4v with two audio tracks, the first being Stereo AAC and the second being Dolby Digital 5.1. To play ball with Apple TV and get 5.1, this is how many encode their content... and it's playback compatible with other devices like iPhone 4, iPad, etc., too, since the stereo track is first.
Since the Roku can currently only play the first track, this content only plays in stereo and it won't output the Dolby Digital track. The Apple TV 2, on the other hand, automatically uses the Dolby Digital 5.1 track if you've set the player to output 5.1. So, my feature request: Similar behavior on the Roku, or just the ability to switch between audio tracks...