Hi, I have no trouble creating DVDs, including converting some of my PAL DVDs to NTSC. I encode using AC3 video. Is it possible to re-encode the video back to AC3 5.1 surround?? I only can get 2 channel stereo. Here is what I do: 1) Use DVD Decryptor to rip off all the files 2) Use DVD Shrink to capture only the main feature, trim the credits off the end, and capture only the 5.1 channel AC3 English soundtrack. 3) Use DVD2AVI to convert video to AVI and to convert the AC3 audio to WAV format, the necessary format for TMPGENC. 4) I then use TMPGENC to convert the video and audio to NTSC, with 2 elementary streams: MP2 audio and M2V video. 5) I use ffmpeggui to convert the new MP2 audio back to AC3. But it is only in 2 channel stereo. 6) Use DVD-Builder to reencode and remux the video and audio to a useable DVD format. Please give me any suggestions.