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04-24-2010, 02:35 AM   #1
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HELP! My Pentax K-X Videos Stop Automatically

I love my Pentax K-X, but found myself in some unique situations which would have been awesome to capture on video. When I start up my HD videos (720, 3 stars), I find that around 50 seconds to a 1:10 minutes, my video automatically shuts off.

When I go back home, I have to recover the file through VLC and the .avi that I have works just fine. I just want to know what I can do to prevent my camera from shutting off automatically so that I can record a whole event.

I know that there is an auto shut-off feature with the K-X, but it's not supposed to be this bad. Also, I have plenty of space on my 16GB SDHC card (Class 6).

Any help would be great...

04-24-2010, 03:03 AM   #2
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Get a faster card. eg, Sandisk Extreme class 10 30MB/s
04-24-2010, 03:14 AM   #3
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It looks like the video stops when the buffer memory is full. I would recommend to try another card: a faster card would help definitely. You may also consider a lower HD video resolution (1 star or 2 star).

Hope that it will help ....
04-24-2010, 03:59 AM   #4
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The other thing to try (if you haven't) is to update your firmware. I know that when the K7 was released it tended to falter with slower cards, but with firmware updates, it does much better and can video for longer with slower cards. If that doesn't help, a faster card is what you will need...

04-24-2010, 04:21 AM   #5
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Update the firmware if you hadn't done before and give it another try.
If that doesn't work then probably, as stated by other users, the SD card you have is too slow to handle writing of video files.

QuoteOriginally posted by sledger Quote
Get a faster card. eg, Sandisk Extreme class 10 30MB/s
Why a class 10? tha sandisk ultra III are quite expensive.
I'm using a Fujifilm 8GB SDHC class 6 that work with video and contiuous shooting without problem, and it's quite cheap (paid 20€ for it).

Last edited by matam; 04-24-2010 at 04:55 PM.
04-24-2010, 12:41 PM   #6
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Alright. All very good suggestions. I was already on the 1.01 firmware for the Pentax k-x. I thought that the Class 6 speed should have been sufficient for HD video. I used the same card on my Canon HF100 and that recorded at 1080p. I'll look into a Fujifilm 8GB because that seems reasonable and report back.
04-24-2010, 05:02 PM   #7
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sorry i was wrong, my card is class 6 not 8 and i've recorded clip longer than 10 minutes without problem.
04-24-2010, 06:00 PM   #8
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Class 6 should be fast enough. But the card itself may have defect. Trying another card is the easiest way to isolate the problem.

04-24-2010, 07:33 PM   #9
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Thanks everyone for responding. I did more research on my SDHC card and I found that people were having similar problems with the A-DATA 16GB SDHC Class 6 card. It seems like it does come down to the buffer problem. I have ordered an SanDisk 8GB SDHC Class 6 card Extreme II. It was $30 and I'll check back to report my findings.
04-24-2010, 08:23 PM   #10
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I asked at a store about why the SLR's shut down and apparently they arnt allowed to go more than 29mins and 59 seconds without stopping without being classed as a video camera. Who would have one going that long anyway. They said one of the Canons stops just short of 30 mins for that reason. Without looking again in the manual of my wife's KX, i think it says in there that the video will shut down after 10 mins. Just start it again.
04-25-2010, 04:44 AM   #11
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as long as i konw, there isn't a time limit for K-X, but there's fat32 max file limit of 4gb and that translate to about 20 minutes max clip lenght @720p *** quality. (searching from previous test, the biggest video file i've got is almost 4gb)
i didn't try to lower the quality or resolution to see if it can record more than 20 minutes, or format the card in ntfs (dunno if the camera will ever recognize it) so it doesn't have filesize limit.
i'm gonna make a quick test later to see if it can be done.
04-25-2010, 05:06 AM   #12
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I'd be surprised if the camera will recognize NTFS. That's an awful lot of additional code in the firmware so that the camera can read files greater an 4gb when you consider that the limit of 30 minutes video is to stop the camera being classed as a video camera. There aren't any photos that are 4gb in size so no need for NTFS.
04-28-2010, 02:33 PM   #13
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Thanks for all the help. I can confirm now that my camera does go past the one minute marker without any problem. I sold my A-DATA 16GB Turbo SDHC card (class 6) for a 8GB Sandisk Extreme III SDHC card (class 6). It must have been a buffer problem like hcc said before.
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