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Data Rates
See the attached browser window. You can see the various compressor codec used and the corresponding data rates. I am confused because, for example, the 01042001.mov was recorded in 50Mb/s which doesn’t correspond to 17MB (17 MB equals around 130Mb…unless the conversion tool online was incorrect). Is there any way to change the data rate column to Mb. I just want to make sure I am not losing data during compression (even thought that first file was straight off the CF card. Any insight would be great. Thanks
0_screenshot2011-01-26at10.55.08pm.jpg
macbook pro 17″ i7, 8GB RAM
esata external HD 7200RPM
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canon 5D mark II, 24-70mm, 50mm, 15mm fisheye, juicedink DT454, zacuto striker -
3 Replies
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Hi Adam,
I think that file is coming from a NANO-Flash.
NANO-Flash uses the SONY XDCAM HD-422 codec, but is not restricted to the official 50Mbps data rate. It can records from 25 to 280 Mbps. However, whatever the real data-rate, it will shows only 50Mbps.
Nothing wrong.
Open the file with QT Player and have a look to the Info window.
Cheers
Rafael -
You mentioned an online conversion tool.. Remember that the conversion between B (bytes) and b (bits) is simply a factor of 8. There are 8 bits in 1 byte. You can easily multiple or divide as appropriate and not need to hunt down any other tool that may give you doubt.
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Is not a matter of tools. Is that an standard XDCAM HD-422 file can’t make 17 MB/s files because is 50Mbps. As you know 50Mbps should make 6.25 MB/s files.
I bet that is a NANO-Flash 140Mbps.
rafael
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