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Re: NX5u dropping 4 frames of audio after 30 minutes

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Ian Cook
Re: NX5u dropping 4 frames of audio after 30 minutes
on May 5, 2011 at 4:00:41 pm

I checked this again and saw no difference in behavior between LPCM and D-Digital clips. See attached images. Each 20 minute clip in the Media Browser spans two MTS files on the FMU128 drive. I included the Finder window showing the spans on the card in the screen shots. Both clips display in PPro as single 20 min files in the Media Browser and on the timeline. Even if I file-->import 0001 (the first half of a spanned clip comprised of two files) the entire span comes in as one clip. This was in Premiere Pro 5.0.2 (075(MC:218798)).

As far as Log and Transfer and long clips I believe this has to do with memory management/allocation within FCP. FCP will often have issues with long transcodes of any format (NXCAM, HDV, XDCAM) as the ProRes output files can stretch into the hundreds of gigabytes and from all indications FCP simply runs out of available memory. Remember that transcoding to ProRes 422 HQ will increase the file size nearly 10x. If you look at the crash logs you will probably see memory allocation issues in the "crashed" thread. In my experience this is somewhat normal for FCP and will not change until FCP 10 is released with 64 bit memory addressing and access to more than 3-4 GB of RAM.

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