F3: Why is my footage so small?

pfista

pfista

Well-known member
I'm using an external PIX recorder and have SDI out with 1.5G YPbPr422 & SLog 1920x1080 24fps (using a single SDI cable)

The PIX is set to 23.98PsF and the codec is DNxHD 4:2:2 10bit 220mb/s but my actual files are way smaller than 220 mb/s. A minute of footage is only showing up as about 1.2 gigs. Does this mean I'm actually not shooting in 10 bit 4:2:2 Slog?

Thanks
 
pfista said:
I'm using an external PIX recorder and have SDI out with 1.5G YPbPr422 & SLog 1920x1080 24fps (using a single SDI cable)

The PIX is set to 23.98PsF and the codec is DNxHD 4:2:2 10bit 220mb/s but my actual files are way smaller than 220 mb/s. A minute of footage is only showing up as about 1.2 gigs. Does this mean I'm actually not shooting in 10 bit 4:2:2 Slog?

Thanks
Click to expand...

Usually bitrates on codecs are for the 29.97 version, so at 24 things are at about 80%.

I'm not clear on what file size you're expecting? Off top of my head your numbers seem right. Were you expecting 220 megaBYTES per second?
 
Wow, you're right I was thinking in bytes rather than bits, thanks for pointing that out!
 
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