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Authoring Blu-Ray with subtitles gives error on build
I have a 90 minute feature that I’m trying to author as a Blu-Ray in Encore CS5 (Mac OS 10.5.8). I have encoded my elements separately and have imported them successfully (one .264 and one .ac3). I have created my subtitle track, which has 1639 subtitles over the course of the 90 minute film. I found something in the documentation that said that subtitles for Blu-Ray projects must be spaced at least 5 frames apart, which I have done. The subtitles are using the default subtitle font (Myriad Pro) at a size of 32, center justified, just inside title-safe for 16×9. I can play through all of it perfectly with the simulator. My disc name is ROSE. Now when I go to build my disc image, I first click “Check Project”. This passes and I receive no errors. Then I click “Build”, and it spends a lot of time importingmy source files and also some black and silence files for step 1. Then step 2, the ‘building streams’ goes and gets to 13.79GB out of 19.49GB and fails. I get an error: “Fatal Error – Code 6 – Graphics Buffer Underflow”. Keep in mind I am not burning a disc, just writing a disc image (to a drive that has terabytes free space). I have tried finding what is causing this error and am unsuccessful. I know however that it is something to do with the subtitle track, because I removed the subtitle track and the build was fine. There is nothing in the subtitle track that is problematic that I can see. I can even export the subtitles to a text file and I parsed it without finding anything out of the ordinary. I have tried removing the contents of the AuthorScriptHDMVSessions folder and building again, and again it fails in the exact same spot. I have tried writing the disc image to different drives and different folders – all times failed exactly the same way. There is nothing in the documentation, or on this site, about a ‘graphics buffer underflow’ error, what it means, or how to get around it. So I’m stumped.