Keep the sound separate and convert your H264 video to Quicktime MJPEGA(50-75% quality) or PhotoJPEG(medium to high quality). This will make it much easier for you.
Use the MPEG Streamclip tool from squared5.com to convert your clip and export your audio.
That's the safest way right now. If you have the means, Quicktime Prores Proxy is good too for high resolution video(720p and higher) but you may need FinalCutPro to produce that. However, I haven't tested that with Reaper yet. It is great for Protools and since Protools is happy with Quicktime MJPEGA and PhotoJPEG, I figure it's good with Reaper too.
Last edited by airon; 07-31-2011 at 06:37 AM.
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