Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
06-10-2013, 09:31 AM   #1
Pentaxian
JinDesu's Avatar

Join Date: Jun 2011
Location: New York City
Photos: Gallery
Posts: 5,626
What is limiting my k-01's video recording?

I've recently been using my k-01 to record video, and I've been having some trouble with recording length.

I am using a Sandisk 32gb Ultra (30mbps). I searched on this forum, and this thread suggest that the 30mbps is sufficient. I am shooting Full HD, 30fps. When I press the shutter button, it shows me an available recording time of ~16 minutes. This varies of course, but it's been my experience. What happens is that, as it records, it eventually stops itself around the 8-10 minute mark. This is confusing to me, and a little random as well. When it stops, it shows the hourglass symbol. Based on that, I am assuming it has to do with the write-speed/buffer available.

Now, the confusing part to me is that - I haven't seen this issue pop up on this forum. I'll admit, I haven't really paid too much attention to the k-01 forum until recently, but looking back 4 pages I still don't see anything about this subject. So, my question is:

Is the soft limit of 8-10 minutes of recording my SD card? Or is the sensor overheating? Or is it the natural buffer limitations of the Prime M engine? Or am I doing something wrong?

Thanks,
Jin

06-10-2013, 09:37 AM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 43,182
QuoteOriginally posted by JinDesu Quote
I've recently been using my k-01 to record video, and I've been having some trouble with recording length.

I am using a Sandisk 32gb Ultra (30mbps). I searched on this forum, and this thread suggest that the 30mbps is sufficient. I am shooting Full HD, 30fps. When I press the shutter button, it shows me an available recording time of ~16 minutes. This varies of course, but it's been my experience. What happens is that, as it records, it eventually stops itself around the 8-10 minute mark. This is confusing to me, and a little random as well. When it stops, it shows the hourglass symbol. Based on that, I am assuming it has to do with the write-speed/buffer available.

Now, the confusing part to me is that - I haven't seen this issue pop up on this forum. I'll admit, I haven't really paid too much attention to the k-01 forum until recently, but looking back 4 pages I still don't see anything about this subject. So, my question is:

Is the soft limit of 8-10 minutes of recording my SD card? Or is the sensor overheating? Or is it the natural buffer limitations of the Prime M engine? Or am I doing something wrong?

Thanks,
Jin
The maximum file size in your SD card's filesystem is 4gb. So once the camera can no longer write to the card, it will stop recording. Other manufacturers, such as Canon, will automatically split the video file into multiple parts, but Pentax doesn't have this feature yet, so you have to manually re-start the recording.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

06-10-2013, 09:43 AM   #3
Pentaxian
JinDesu's Avatar

Join Date: Jun 2011
Location: New York City
Photos: Gallery
Posts: 5,626
Original Poster
Oh I see! I didn't even bother checking for that. Thanks - seems like a simple enough answer. I'll confirm my files are 4gb when I get home.
06-10-2013, 11:46 AM   #4
Pentaxian
RonHendriks1966's Avatar

Join Date: Jan 2009
Photos: Gallery
Posts: 8,714
Strange, you should get 16 minutes 23 seconds (or around that).

06-10-2013, 12:41 PM   #5
Pentaxian
JinDesu's Avatar

Join Date: Jun 2011
Location: New York City
Photos: Gallery
Posts: 5,626
Original Poster
QuoteOriginally posted by RonHendriks1966 Quote
Strange, you should get 16 minutes 23 seconds (or around that).
It would be nice if it did. I'll run a few tests when I get home.

I am not really complaining about the length recording, but rather that mine stops between 8 to 10 minutes. Not knowing the exact time it will stop is very annoying - if my camera would stop at 16 minutes give or take 20 seconds, that would be a lot better than give or take a minute.
06-14-2013, 12:28 AM   #6
Pentaxian
PiDicus Rex's Avatar

Join Date: May 2013
Location: Melbourne, Australia
Posts: 1,126
16+ minutes would be about right for HD 30fps, it's a bit over 19 minutes for HD 25fps.

I'm having no problems recording up to the full time, whereas you say it's dropping out at around half that Jin ?
I'd think if that's the case, maybe check that the card is formatted to FAT32, and not FAT16 -> The 'SD' standard calls for FAT16, 'SDHC' specifies FAT32.
The 32Gb card you mention should be SDHC and FAT32

Oddly enough, when recording to FAT32 formatted cards (as formatted in the camera), the 19+ minutes I get, only appears to be 2.6Gb in file size. Will have to double check this with a test recording.
06-14-2013, 12:34 AM   #7
Pentaxian
PiDicus Rex's Avatar

Join Date: May 2013
Location: Melbourne, Australia
Posts: 1,126
One other thing to check, and this applies to all of us as consumers, and that is to verify that you've got a genuine Sandisk card - there have been fakes in the past, with lower performance levels, or with half or less the space claimed on the label.

IIRC, the 'H2' memory card test app will do speed and space checks to see how well the card performs.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
forum, k-01, k01, minutes, mirrorless, pentax k-01, video
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
What speed SD card for K-01 video recording in full HD? raider Pentax K-01 24 02-23-2014 11:12 PM
Working with two K-01's! (video) RonHendriks1966 Pentax K-01 10 03-03-2013 11:28 AM
My K-01 Test video baholbrook Pentax K-01 24 04-16-2012 04:39 PM
What Android player for K-01 video? rfortson Pentax K-01 12 04-06-2012 03:18 PM
World's First K-01 Hands-On Video TCSJordan Pentax K-01 31 02-03-2012 12:23 AM



All times are GMT -7. The time now is 03:58 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top