Can't upload videos to Premier Pro

Try basic video editing techniques |

That is correct you cannot upload files to Premiere,

you can however import or ingest clip by first copying the entire memory card to hdd first.

The ingest via Media Browser.

Peru Bob & John have good info.

To add a bit, the iPhone media is VFR ...variable frame rate, meaning that although you may have the camera set for say "30fps", what it records will vary between a range of 18fps to 32.4 fps, depending on how much 'detail' of the image is changing per frame. Makes it easier for the camera to record smaller files, but keeping that video in sync with the audio (which is recorded at a constant sample rate) in PrPro is not going to work well.

For that, the main suggestion around here is to download/install Handbrake, and use it to convert your phone/device/screen-recorded media to constant frame rate (CFR) before (as noted above) importing or ingesting into PrPro via the Media Browser. In Handbrake, on the Video tab, set it to CFR and also select a specific number frame-rate to get CFR out.

As another Handbrake note, it looks at my phone's 4k/49Mbps media, and the preset it chose initially would convert that to 1920/1080 at around 18Mbps ... NOT what I wanted! So I made a preset that (besides converting to CFR) 1) keeps the original media frame-size and 2) uses the "Placebo" quality settings so that the bitrate I get out is nearly exactly what went in.

HandBrake download page:  https://handbrake.fr/downloads.php

Next ... depending on which format/codec you're using for the GoPro and the DSLR, you could be dealing with long-GOP media, which especially in 4k is hard on the CPU for playback while editing. If you're using a decent Cineform from the GoPro, it might be pretty decent to work with, but the Canon ... probably long-GOP. For best playback on most computers, use the Media Browser's ingest feature, and set the preferences for ingesting (clicking on the wrench icon) to "Create Proxies" and from the dialog box for that, select the Cineform preset offered.

Neil

Somewhat dated now, but still some good information about the basics

PPro/Encore tutorial list http://forums.adobe.com/thread/1448923 has lots of tutorial links to help learn

Copy the files to your internal hard drive and then import them (not drag and drop) into Premiere Pro.