File size of 1 minute in XDCAM HD422 50mbps codec at 1920×1080 @ 59.94i?

[Rafael Amador]

[Thomas Yong] “I am trying to convert a test of a film by sending it from Final Cut Pro 7.0.3 via Compressor to a quicktime in XDCAM HD422 50mbps at 1920×1080@59,94i? But my file size has become huge and unplayable in my Quicktime viewer. It is app 37 gig. Something says there is a problem?
“
Open the clip in QT and Cmd-I to see what kind of codec is that. 37 GB is OK if your clip is one hour and a half (too long for a test, I guess). Whatever the length and file size, should be playable by QT in most computers.
BTW, why don’t just convert in FC or QT?
rafael

http://www.nagavideo.com

[Jeff Meyer]

I’m sending half hour TV shows in XDCAM hd422 1080i (in MXF not MOV) that are coming in between 10 and 13gb depending on how much black the network requests for commercial breaks. If your one minute test is 37gb there’s a problem.

Is XDCAM HD422 50mbps 1080i in a Quicktime your deliverable?
• If so change your Final Cut sequence settings to match. Field dominance should be upper. If you have to change the frame size or pixel aspect ratio be sure to check ALL of your clips to ensure they’re properly conformed to the new sequence settings, then export at current settings.
• If not please tell us what your deliverable is so we can advise what changes you need to make.

[Bouke Vahl]

Of course there is a problem
50 Mb says 50 Mbits per second.
That is 50 / 8 = about 7 megabyte per second (including sound)
So 60 seconds times 7 MB = 420 megabyte for your output file.

Bouke

https://www.videotoolshed.com/
smart tools for video pros

[Jason Brown]

aja makes a great app for iphone called “AJA DataCalc”

It gives you great calculations for multiple codecs at various frame rates and dimensions as you set the length. I routinely use it to determine what size XDCAM disc to use when shooting something…or when planning a shoot or transcode. It’s a very useful tool.