I don't have TiVo so you'll have to give me more detail. You add the video from TiVo to the Video files setting in Popcorn's Convert window. Is that correct. Then you click the button and choose what as your convert setting? If you choose h.264 player it should not change the resolution, nor with several other settings. What format are you wanting it to be?
Does this have anything to do with the Mac-to-TiVo application?
Thanks for the reply. I use the Tivo to Mac application, which copies the .tivo file as it exists on the TiVO recorder directly over to my Mac. The copy that is on my mac is in 1280 by 720 resolution. Then I open Popcorn 4 and get ready to convert the .tivo file. With other types of files, I can click at the bottom to select the conversion type, and I have access to a "custom" option that lets me select the resolution, frame rate, etc. But if it is a .tivo file, there is no custom option; in red text, there's a statement that the file will be converted in 480 by 360, the maximum allowed by TiVO. It doesn't matter if I choose H.264, Apple TV, MP4, or whatever - there's no custom option, and the "maxiumum allowd" warning is shown.
I suppose this could be a limitation requested by TiVO. No matter whose idea it was, I am very steamed that there was no warning or any information at all that upgrading to Popcorn 4 would actually downgrade the resolution at which you can convert shows recorded on TiVO.