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Blu-ray authoring difficulty



I have a Hauppauge HD-PVR, Toast 10, EyeTV 3, latest software and firmware updates for all. I can make Blu-ray discs without reencoding in Toast if I click the Toast button in EyeTV and select "Never" in the encoding settings in Toast. The problem is that the output of the HD-PVR never maintains sync between audio and video, so I've developed a method incorporating ffmpeg and Sox to make slight adjustments in tempo for the AC3 audio. That means, of course, that I have to work with audio and video separately, which isn't a problem, except that I can't seem to find a way to remux the audio and video so that Toast will accept the results without reencoding. I've successfully remuxed with both ffmpeg and MP4Box to .mp4 files that play just fine in VLC and mplayer, but can't be accepted by Toast (error "unsupported format and cannot be imported"). When I use QuickTime Player Pro, I can create a .mov file, but I can't create a .mp4 file unless I convert audio to aac in audio export options (passthrough choice isn't available for audio), so Toast insists on reencoding any file produced by QuickTime Player. Is there any way for me to put the adjusted AC3 audio back together with the h.264 video so that Toast can author my Blu-ray disc without reencoding the way it does when I click the Toast button in EyeTV? Thanks.

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