user16354: Most photo-cameras (canon or whatever) has the limit, as most of them stop the video-recording after 12 minutes. AFAIK, it is related to SD-CARD limits (as FAT format can hold max 4gb file). However, how to force it to auto-continue recording in the same moment, when overgoes 12 minutes? 
So, we no longer need to MANUALLY push the record button again? very annoying...

user23732: Well, if your camera doesn't support it natively your out of luck. Some Magiclantern Versions for Canon support this feature.
For every other camera, the only way I found sofar is to buy an external timer, set it to 12min and the camera that it starts recording via the external trigger.
Keep in mind though,that this will result short breake.
You need to test it, as some cameras need q few seconds of cool down.
Safest way if pauses are no problem is to set timer to 12.5 minutes

user23975: Alternatives:
Depending on the camera model used, one could expand the recording time a 4GB file can take up by reducing the recording quality (compression, bit rate, resolution...) of your video.
With SOME cameras, you might be able to use an SDHC card forcibly formatted to a file system that does not have a 4G file size limit, eg exFAT or NTFS. If you can make it work, test THOROUGHLY.
Be aware that certain cameras also have a hard coded 30 minute video limit, which is there for reasons all unrelated to file size: In some markets, video cameras are taxed higher than still cameras, and the definition of a video camera in the relevant tax codes is continuous video recording capability beyond 30 minutes. In some cases, the camera might also not be THERMALLY designed to handle more than 30 minutes uninterrupted recording load.

16354: <p>Most photo-cameras (canon or whatever) has the limit, as most of them stop the video-recording after 12 minutes. AFAIK, it is related to SD-CARD limits (as FAT format can hold max 4gb file). However, how to force it to auto-continue recording in the same moment, when overgoes 12 minutes? </p>

<p>So, we no longer need to MANUALLY push the record button again? very annoying...</p>
 23732: <p>Well, if your camera doesn't support it natively your out of luck. Some Magiclantern Versions for Canon support this feature.</p>

<p>For every other camera, the only way I found sofar is to buy an external timer, set it to 12min and the camera that it starts recording via the external trigger.</p>

<p>Keep in mind though,that this will result short breake.
You need to test it, as some cameras need q few seconds of cool down.
Safest way if pauses are no problem is to set timer to 12.5 minutes</p>
 23975: <p>Alternatives:</p>

<p>Depending on the camera model used, one could expand the recording time a 4GB file can take up by reducing the recording quality (compression, bit rate, resolution...) of your video.</p>

<p>With SOME cameras, you might be able to use an SDHC card forcibly formatted to a file system that does not have a 4G file size limit, eg exFAT or NTFS. If you can make it work, test THOROUGHLY.</p>

<p>Be aware that certain cameras also have a hard coded 30 minute video limit, which is there for reasons all unrelated to file size: In some markets, video cameras are taxed higher than still cameras, and the definition of a video camera in the relevant tax codes is continuous video recording capability beyond 30 minutes. In some cases, the camera might also not be THERMALLY designed to handle more than 30 minutes uninterrupted recording load.</p>
