"Just installed Premiere Pro CS6(PC)on a new machine.I can see and play the AVI files in bridge but when I try to import it says there's a file issue and won't import. Are these files I need to convert to a different format or do I need to add a specific codec to the new machine?"
As far as I know, AVI is container file format rather than a specific audio, video, or image data format. It can contain data encoded using various compression and encoding schemes. Unfortunately, the Premiere Pro (Premiere CC included) cannot edit with all CODEC's, and especially the delivery-only CODEC's, like Xvid and DivX (MJPEG-AVI, 3ivX-AVI included). Some users have had luck with importing and editing the very latest versions of those CODEC's, in the latest versions of Pr, but that is uncommon. Usually, the file will not Import, but if it does, then there is usually Audio with no Video, or the Video is so bad, as to not be useful.
In fact, it's easy to fix the issue if you end in failure or encounter some audio or video problem when opening AVI files within Adobe Premiere Pro CC, CS6, CS5 or CS4. You just need to adjust those unsupported AVI to a more editing-friendly format, such an Adobe Premiere's MPEG-2 or WMV codec. This article would show you how to convert AVI to Adobe Premiere file on Mac step by step with a professional Video Converter for Mac (macOS Mojave compatible), by running it, there's no need to set the codec by yourself: the Mac program has three optimized presets for Adobe Premiere. If you're using Windows users, please get the Video Converter. Just get the right program and follow the step-by-step guide to transcode AVI for editing in Premiere Pro.
How to convert AVI to an Adobe Premiere-compatible format
Step 1. Import AVI files to the Mac converter
Download EaseFab Video Converter for Mac and install in your Mac. Launch it when installation complete. Two options provided to get started: drag & drop AVI files to the Mac app directly, or you can Click "Add Video" button to locate the AVI files you want to add.
Batch conversion is available here, so you are allowed to import several files at one time.
Step 2. Choose the optimized preset for Premiere
The program has three already optimized the video settings for Adobe Premiere Pro. You can select MOV (Entitled Premiere), WMV or MPEG-2 from "Editing Software" as the output format. All output videos will keep the original quality of AVI video and seamlessly fit Adobe Premiere Pro CC, CS6, CS4, CS4 and more. Here we recommend you choose MPEG-2.
Tips: The default setting works well. Of course, if you want to customize video and audio encoding settings, just click the "Settings" button to customize these settings. You can adjust the output video/audio resolution, frame rate, bit rate, etc. to customize the output files to get the best quality you want.
Step 3. Start AVI to Premiere conversion
Hit the "Convert" button and this Video Converter for Mac will convert your AVI to MPEG-2 rapidly. After the conversion, you can import the output files to Adobe Premiere Pro (the latest Premiere Pro CC included) for further editing smoothly.