Adding Subtitles to QuickTime movie

I'm trying to find a good method for burning in subtitles to picture without using Final Cut or DVD Studio Pro.

If by "burning in subtitles to picture" you mean burning the text into the video track using QT 7 Pro, then the normal workflow would be to create a standard enabled "Text Track" (i.e., does Jubler allow you to export the project text as as TXT file?) and merge it with your source video. If the merged source video-Text Track file is then transcoded to an intermediate file before authoring as a DVD (or other use), the video track and text track will automatically be flattened together.

My workflow is to open the TXT file using Quicktime, copy and then go to the original video file and click EDIT > ADD TO MOVIE. The track comes in, but just as Chinese characters and only lasting about 30 minutes (the file should last the full 72 minutes of the program). Any ideas for what could be going wrong here?

Sounds like the text data is not being opened as a TXT file, file contains improper descriptors, and/or the the end of file/turn off text display time entry does not match the actual end-of-file/or time to turn off the final display of text. (Will probably have to download and test Jubler sometime to see just what it can and can not do for such a "burn-in" workflow.)

subler app! download the app> open it(it doesn't have a GUI)> file>open>select you movie file>"open">drag your srt file to the metadata area>save as or send to iTunes to save. i did it for an mp4 copy of pans labyrinth it took me 5 min start to finish(including conversion time) as opposed to the almost hour it took trying other sites and apps. subler is literally 1.2.3. and done.