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An occasional series expressing some of my own thoughts and opinions on aspects of digital photography
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A good way to fill up your HD

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Posted 18-11-10 at 01:26 PM by Stephen

I've never been much of a one for using in camera video. When I had my G9 I used it a bit just to see what it could do, and had great fun and some pleasing results with it. The file sizes always seemed reasonable so I was happy with the outcomes. The Mac has built in movie progs, which were a revelation to me. However, I am now using the Canon 5DMkII with great success, I love what its capable of, both in low light and regular photo output.

I was recently asked to give the movie mode a go on a job I was doing. It was essentially just a 360 degree sequence. The camera was on a tripod and slowly moved round in a complete circle. The result was impressive, 1.42min at a resolution of 1920x1080. The file size however was 599MB which I was surprised at, but it made me realise just how much space you would need for creating anything with any length.

My 8GB CF card would last no time and the HD drive would soon get full. Even using DVDs to put resulting movies on would not take that many minutes, and blu ray would no doubt have to be considered.

I've not tried the Mac movie prog on it yet, there was really little need on this occasion, but I imagine there will be some way of compressing or reducing the size in some way. Out of interest though I'd be interested to know what sort of filesizes other people get for a 1080p movie sequence

In the past I have stitched 360 degree panoramas to create a Quicktime VR movie sequence, and I've used iPix camera systems which take 2 180 degree images which are stitched in iPix software. However, it seems to me that those days are maybe gone now and the movie mode in modern dSLR's does just as good if not a better job, without all the hassle, and of course it comes with sound and action if you want it.

I'm beginning to warm to the idea
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Comments

  1. Old Comment
    Caz's Avatar

    HD Movie mode on DSLR'S

    I bought my 550d back in February, and have used the HD movie mode several times when I've been at a gig (by request, I hasten to add) but the file sizes are horrendous! The largest to date is 1.09gb for a 3 minute movie in HD.

    Nowadays I use the crop mode but if the band do two songs together it can still end being a very large file - at my last gig I clocked up 1.49gb when they segued from one song into another. However, that video is over 9 minutes long. I'm not happy with the quality, but they seem to like it.

    The other thing I've noticed with movie mode if you've got the 18-55mm or 50mm lens on is that you have to be a lot farther away or you're looking up their nostrils! This isn't always possible if you're in a bar or club so handheld the videos can be a bit on the wobbly side because it's not always possible to set up a tripod when the club is heaving.
    Posted 18-11-10 at 02:19 PM by Caz Caz is offline
  2. Old Comment
    Stephen's Avatar
    Thanks for that Caz, its good to know there are similar issues with your camera.

    I have just put my movie I referred to above into iMovie on my iMac, and exported it at 1280x720, the file has become 134MB. At 640x360 it becomes 20.8MB and at 480x272 its 11MB

    So it seems to me that a client wanting a movie sequence for web use only would have no problem with small versions
    Posted 18-11-10 at 03:33 PM by Stephen Stephen is offline
  3. Old Comment
    Ian's Avatar
    The Olympus Pens I use offer little video compression as they use Motion JPEG. They shoot at 720 HD resolution (1280x720) at 30P (30 frames per second, progressive) and are encapsulated in an AVI file format. This is limited to 2GB in size per clip, and that contains just 7 minutes of video, or 293MB per minute.
    Posted 24-11-10 at 01:03 PM by Ian Ian is offline
 

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