Is this problem solved?
I uploaded some files .MP4 (h264 – aac audio) and did ask NOT to re-encode. I got the files as .flv and playing stuttering, because the bitrate is too high…
I suspect that the option buttons on the 1st upload screen are inverted.
To be sure I am doing a test: uploading twice the same mp4-file once asking to re-encode and twice asking NOT to re-encode. I am waiting to see the results. I’ll report back.