Make video size smaller on Canon 70D?

The Panasonic GH3 does not have recording limits if you want to stay with a stills camera for video but a smaller sensor. The 70D, as other DSLR's, will have recording limits of less then 30 minutes regardless of codec. I would ask want you are filming that lasts over 30 minutes as well. Most of the content I can think of like that might be better suited for a camcorder as others have mentioned.

I am not a fan of shooting video with DSLR's anymore personally because there are better tools out there now. You do not need to shoot video with a consumer camcorder either though. If you are stills shooter as well as a video guy the Panasonic cameras are the best choice. These include the G6, G7, GH3, and GH4. I would recommend those over any other stills camera under $2,000 that shoots video. Above $2,000 the Sony A7S is the best choice.

Read the manual. If you don't have it, here is a link:

http://gdlp01.c-wss.com/gds/5/0300011965/03/eos70d...

"Shooting movies" starts on page 251.

Pages 261, 265 & 266 indicate video resolution and size. Note that smaller file size = reduced resolution = reduced video quality. Much better that you get more memory cards instead.

While we're here:

Page 266 tells you there are limitations related to file length/duration. This is where your 29 minute "problem" is. This limitation is by design. Your card can hold more video - you just need to press record again.

Pages 266 & 287 tell you about overheating.

Page 259 tells you about file segmentation.

There's not much more useful information about video - the 70D is designed for still image capture and happens to capture video and audio as a convenience feature. If you picked this dSLR specifically for video, you picked the wrong device. A camcorder is a much better plan. If you are convinced that a dSLR is the only way to go, then you should have gotten a dSLR designed for video capture... My definition of dSLR means the device has an interchangeable lens system, APS-C sized single imaging chip and a hot-shoe to add a flash. Examples include Sony NEX-EA50M, Canon EOS C100/C300/C500 and perhaps the Blackmagic Design cinema cam.

If your definition of a dSLR is different, please let us know so we can direct you to the correct tool for the (video capture) job.

Agree with what's been said. Your needs exceed the capabilities of the DSLR or any digital still camera for that matter. You must go with a true video camera and get yourself a camcorder.

No.

It's 29 minutes. No more.

Over 30 minutes, it'll be categorized (by almost every countries) as Video Recorder, which's subject to different tax.

29mins is an artificial limit set so that the camera does not fall into the tax band for video cameras in some dominions. You might be able to get past this using "magic lantern" on your camera. And you'll find that you should have memory space on your memory card!

That 29 minutes is the limit for all digital cameras even if you find a way to make resolution smaller. If you want longer continuous recording times, get the right tool to capture video - a digital camcorder.

Actually, in my experience, for quality purposes you shouldn't make it smaller. Just get a bigger card.