The easiest way to fix the Premiere Pro not import MTS files error is to convert the unrecognized MTS files to other Premiere Pro compatible formats. Hence, firstly, we need to figure out what Premiere-supported formats are.
From Adobe’s official support, we can know that Premiere Pro natively supports:
3GP, Apple ProRes, ProRes HDR, ProRes RAW, ASF, AVI (DV-AVI, Microsoft AVI Type 1 and Type 2), HEVC (H.265), MOV, MPEG, MPE, MPG (MPEG-1, MPEG-2), MXF, WMV…
To transcode your MTS files smoothly, a powerful video converter is essential. Here we highly recommend WonderFox HD Video Converter Factory Pro, an all-in-one transcoder equipped with 500+ output presets. Not only can you convert MTS to MPEG, AVI, 3GP, WMV, Apple ProRes, etc., and vice versa, but it also allows you to tweak parameters like resolution, frame rate, bitrate, sample rate, aspect ratio, and so on.
Other impressive features include compressing, editing, recording, downloading, and so forth.
Download this robust, Windows-based converter and follow the steps to transcode MTS files to a Premiere Pro edit-friendly codec E.g. ProRes.
Launch HD Video Converter Factory Pro after installation and enter the Converter module. Then hit the Add Files or Add Video Folder button, or execute a drag-and-drop action to import your MTS files.
Click on the Down Arrow icon at the bottom of the conversion window to set an output folder.
Click the output profile image to enter the full list of 500+ configured presets. Then either go to the Video category and select MP4 profile for better compatibility, or navigate to Device > Apple icon and select Apple ProRes profile for a smoother editing experience.
Advanced users can go to the Parameter settings section to tweak video bitrate, resolution, frame rate, aspect ratio, deinterlacing, and whatever at will.
Finally, hit the Run button to start the MTS transcoding process. Thanks to the batch mode, you can process a bulk of MTS files in one go.
When the process is end, open Premiere Pro and load the converted MTS files again to check if the MTS file Premiere Pro import failure error is fixed now.
If the video import failure still exists after transcoding, there could be something wrong with the file(s), software, or your computer. Then you can keep trying the following solutions:
1. Upgrade to the latest version of Premiere Pro and update your computer’s graphics driver to have a try.
2. Too much media cache may render you fail to import an MTS file to Premiere Pro so you can clear the cache or reset the preferences to give it a shot.
3. Open MTS files with other editors or players to check if the MTS file is playable. If the file is broken, repair it with a file repair tool.
If your MTS file is not corrupt and you can load other MTS files except for the very one, it is most likely related to the codecs or video settings, then transcode the MTS files with a video converter like HD Video Converter Factory Pro.