Hello MP4tools users. As some of you may know, MP4tools is going through a conversion from applescript to obj-c. As part of this complete re-write, the latest beta includes a new encoder (ffmpeg) which may eventually become the primary tool for creating MP4/M4V files. Initial testing has shown improvements in speed, sync, codec compatibility and the handling of large files. Subtitles are still proving problematic, but we'll see how that goes . There is a "Try New Encoder" checkbox in the main window that must be ticked to override the old encoder (mencoder). If interested, give it a try and let me know how it goes via the beta e-mail address on the download page. And don't forget it's still beta . Feel free to include any feature requests in your e-mails. Cheers.