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How many minutes 32gb at 1080

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August 22, 2011 10:17:51 PM

how many minutes will you get on a 32gb sd sdhc card if you are videoing on full 1080p hd

More about : minutes 32gb 1080

a b G Storage
August 23, 2011 12:20:07 AM

Depends on the compression algorithm. RAW 1080p is about 7GB/min so about 4.5 minutes, highly compressed (ex: mp4), it can go down to ~120MB/min so about 4-4.5hr of video.
a c 415 G Storage
August 23, 2011 12:25:16 AM

The AVCHD standard for 1080p specifies a peak data rate of 24Mbit/sec, equivalent to 8MByte/sec. At that rate 32GB would hold about 66 minutes of video. But it's unusual for a video clip to require such a high rate continuously, so you'll almost certainly get a lot longer than that. As an example, camcorder manufacturers indicate a capacity of about 3 hours when recording high-quality 1080p to a 32GB card.
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August 23, 2011 12:28:00 AM

Are you sure of that info sminlal ? I don't use FullHD so I went on the web and found that article:
https://secure.wikimedia.org/wikipedia/en/wiki/1080p

Here's a quote taken from that article:
Quote:
... 1080p50/p60 production format will require a whole new range of studio equipment including cameras, storage and editing systems,[6] and contribution links (such as Dual-link HD-SDI and 3G-SDI) as it has doubled the data rate of current 50 or 60 fields interlaced 1920 × 1080 from 1.485 Gbit/s to nominally 3 Gbit/s using uncompressed RGB encoding...
In the page they tell of 1080p that can use more than 3Gb/s for data streaming. So if we assume that you will need 3Gb/s, you divide bits by 8 to get bytes: 375MB/s. So we can assume that your 32GB will last about 90 seconds before runnning out of memory. Well we need some pro advice on that!!
a c 87 G Storage
August 23, 2011 12:55:45 AM

Your camera's manual should tell you exactly. I assume you would choose the best quality.

My guess is a maximum of 4GB per hour so that makes 8 hours of 1080p high quality video at least.

"So we can assume that your 32GB will last about 90 seconds before runnning out of memory"
... uh, no...

BluRay:
BluRay movies average about 32GB or less for two hours. Avatar was 43GB for 2.4 hours.

However if we compress a 32GB movie to 8GB it looks almost identical (that's 24Frames Per Second).

*Anyway, again your manual usually tells you these exact specs.
a c 415 G Storage
August 23, 2011 4:07:56 PM

MrBig55 said:
Are you sure of that info sminlal ? I don't use FullHD so I went on the web and found that article:
https://secure.wikimedia.org/wikipedia/en/wiki/1080p


The high bitrates you quoted come from the video production section of the article. That's because the people who create films capture video using lossless recording formats. Those formats require very high bandwidths and a lot of storage because they literally keep every bit intact. But once those movies are edited and distributed, they have been transcoded into lossy formats that require far less storage and bandwidth.

Consumer video cameras generally use the AVCHD standard which is a lossy compression format. It specifies a maximum bitrate of 24Mbit/sec for 1080p30 and 28Mbit/sec for 1080p60. See: http://www.avchd-info.org/format/index.html

The content recorded on Bluray discs has similar data rates.
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