HD ATSC filesize question...

[8ace]

hello - I am getting varying filesizes for my recordings ... What is the usual filesize for ATSC for an hour?

thanks!

[sub]

They do vary wildly. The size depends entirely on the bitrate the broadcaster is using.

[whurlston]

It depends on the bitrate that the channel is using for the broadcast. If a channel is broadcasting at 12Mbps, the filesize will be smaller than one broadcasting at 15Mbps. Also, the bitrates are variable so that can account for different filesizes as well.

Edit: sub beat me to it.

[pcostanza]

Most of the 1 hour programs I record in QAM are 8gb's in size as an average. Don't know if that would be the same as ATSC or not.

[zed]

Mine seem to run a little less than 5 G/hr. That's my local PBS station at 720p, I believe. I use a Twinhan ATSC card for OTA capture.

[johnsonx42]

It does vary by station, but my experience is approx. 4-5GB/hr for 720p broadcasts, and 6-8GB/hr for 1080i. standard def (480i) seems to be about 1 to 1.4GB per hour.