70D really excels is in its Live View mode, where the Dual Pixel CMOS AF system comes into play and delivers fast and accurate focusing for both stills and movie recording in most types of lighting, from bright sunlight to artificially-lit indoor situations. The combination of Dual Pixel CMOS AF and an STM lens also provides smooth focus transitions and excellent focus tracking for video recording, making the 70D a worthy contender for video enthusiasts and independent movie makers

http://photoreview.com.au/reviews/dslr-cameras/advanced/canon-eos-70d#Full_Review

Test at DPreview

The Canon EOS 70D's Dual-pixel AF is ideal for focus tracking during movie recording, and it also works well with built-in touch-to-focus feature.

Using the 18-135mm STM kit lens, the Canon EOS 70D managed to track our subject, but did so in steps, not quite as evenly as we'd have hoped.

Video quality is very good, made better primarily by the 70D's Dual Pixel AF.

Image quality appears to have improved, with a lower noise floor and lower noise overall than the 60D, and good image quality in both bright and low light

http://www.dpreview.com/reviews/canon-eos-70d

While the 60D didn't offer continuous AF for video capture, the 70D does. Continuous AF shooting video with the 70D is the best DSLR performance I have saw, regardless of camera brand. AF system of the 70D has the potential to make even a video novice like me look like they know what they're doing. Canon has had good video image quality for a while now in their DSLRs, but the introduction of this AF system raises their video performance to another level.

http://www.digitalcamerareview.com/default.asp?newsID=5430&reviews=canon+EOS+70D+DSLR+awesome+video+star

70D is still the best all-around DSLR in this price segment, pending our test of the Pentax K-3. The video quality is top notch, the still image quality only suffers in extreme low light, and Dual Pixel AF offers a usability advantage that nobody else can match. For a consumer-level shooter or hobbyist that wants a durable, control-laden DSLR that can do video and stills equally well, the 70D is the choice to beat. That said, the 70D still feels like a bit of a missed opportunity; had Canon simply matched their competition and included a headphone jack and a second card slot, this would be a slam dunk selection across the board.

http://cameras.reviewed.com/content/canon-eos-70d-digital-camera-review

Short film shot on 70D - http://usa.canon.com/cusa/consumer/standard_display/eos_70d_tips_of_our_fingers

@MikeLinn looked very good to me , lot better than the other stuff i seen from it

In autofocus, the 70D proved equal to or marginally faster than the 60D at most of the light levels in our test. Both focus extremely fast, even down to the equivalent of a moonlit field.

The EOS 70D marks a big achievement for Canon when it comes to live-view shooting and video capture. If you don’t commonly engage in these, there’s not much here that would make a 60D user want to upgrade

http://www.popphoto.com/gear/2013/11/camera-test-canon-eos-70d

The best part about the 70D's on-sensor phase-detect is the incredible video autofocus opportunities it creates. Most DSLRs (like the D7100) use contrast-detect focusing during video, which can hunt back and forth for focus while recording. In contrast, the 70D video AF gives videographers smooth focus transitions -- 'racking' between near and far subjects like a pro. Additionally, use of the 70D's touchscreen LCD -- not found on the D7100 -- makes it simple to change the camera's focus during video recording.

http://www.imaging-resource.com/cameras/canon/70d/vs/nikon/d7100/