I've rendered a 1920x 1080, PCM audio timeline to Sony XAVC HD 1920x 1080 Intra 29.97P. The resulting file looks and plays great. When I use Handbrake to encode an H264 file, the video looks great but the audio plays sped up. a 3:10 original to a 1:57 running time in the MP4. In Handbrake, on the audio tab, the original audio stream is identified as "unknown PCM":. Anybody know what's going on?