we have been using FFMPEG as well as Microsoft Expression Encoder 4 PRO and both files (streamed via HLS) do not maintain the 4:3 aspect ratio. however, pointing the ROKU directly to the MP4 file (with streamformat = "mp4") works perfectly.
if you have any other suggestions, i'd be happy to try.
btw, we also tried to stream a LIVE webcast to the ROKU via HLS (using adobe flash live encoder) and it also does not maintain the 4:3 aspect.
all of the videos in the above tests were encoded at 320x240 size.
thanks,
steven
"RokuKevin" wrote:
How was this encoded? We use the resolution headers in the transport stream to determine what resolution to display.
--Kevin