Question about video on DSLR

[treeman]

I know nothing about video at all, so this question could be complete rubbish

But I'm curious to know if you shoot video on a DSLR does that mean the shutter is firing to capture the video, and if so, wouldn't that have a massive impact on the actuation count?

 

[Kerioak]

If I remember rightly the number just goes up by one but with a different file extension for each video

 

[treeman]

If I remember rightly the number just goes up by one but with a different file extension for each video

But presumably the shutter is firing as it would for a still photo? So how many times does the shutter fire per minute of video?

 

[boyfalldown]

no it just remains open for the entire period of shooting, more like recording live view then shooting a whole sequence of stills

Hugh

 

[andrewc]

The shutter fires once, like a bulb exposure, but records multiple frames per second rather than just one for the duration of the exposure.

 

[RaphaelSamad]

The shutter will be open for the whole time. The actual output video data, as captured by the CCD sensor, is handled in an entirely different way when shooting video. This is also much more feasible as video resolutions are much smaller than a still - a full bandwidth, non-compressed high defintion video frame is only just over 2Mbytes in size.

 

[treeman]

Ah, thanks folks. That all makes sense now