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HD recordings need more storage space

Question : How much more hard drive space does it take to record a TV programme in high-definition than it takes in standard definition?

Answer : Standard-definition television signals use 480 lines on the TV screen to make up the picture, while high- definition (HDTV) signals can use 720 or 1,080 lines.

The extra lines create a much more detailed image.

But all this extra visual information takes up more space on a hard drive or disc recorder, about 9GB for an hour-long show.

An hour-long programme in standard-definition television takes one to 2GB on the hard drive.

If you're recording on a digital video recorder provided by your cable or satellite company, you can usually get a rough idea of how many hours you can store of standard-definition TV or HDTV.

Check for a Frequently Asked Questions area on the company's site and you can often get estimates along the lines of "record up to 90 hours of standard-definition programming or 20 hours of high-definition programming."

If you're using hardware and software to record HDTV on your computer's hard drive (like SnapStream's Beyond TV or Pinnacle's PCTV HD Stick Pro), you can typically find information in the support section of the site.

For instance, SnapStream's website www.snapstream.com/products/beyondtv/faq.asp, estimates about 10GB of space is needed for an hour of HDTV recording with its product.

Adding more storage space with an external hard drive is an option for computers, and some set-top digital recorders also allow you to connect an external drive to give you more room to park your recordings.


Scratch around for disk space

Refresh your Windows Explorer

Switching PC boot-up from C: to A: drive

Avoiding storms in your ports

Defragmenting in Safe Mode

iDisk on-line file storage

Rescue your hard drive

Safely removing reluctant hardware

The hard life of a hard drive

Still pining for floppies

Wiping old hard disks

Dead Drive

Spurious "Disk Full" message from USB drive

Unreadable hard drive

Drive name oddity

HD recordings need more storage space

Wipe your PC for safety's sake

Resize drives for extra room


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