I'm not sure what you have tried already but one thing this could be is a mistranslated clip. First off, could you give more information about the format/codec of the media, etc. Here is one thing you can try in the meantime:
Right-click one of your imported clips in the Project window, and go to MODIFY > INTERPRET. If your clip was imported incorrectly by Premiere, you may be able to correct a handful of properties. Make sure that the frame rate you intended for the clip is correctly selected as well. If it is incorrect, click on Assume this frame rate and enter in the correct value.
Like you had mentioned, there could be a problem with the latest update and that particular media. I have not run into any issues in the last update and would like to know more about your issue. Thx for your question and we look forward to getting more info about your issue.
Thank you for getting back to me. I'm going to be honest and say that I
don't know where I can find the media and code for the video. I'm not too
good with technology. I tried your recommendation and sadly nothing worked.
On Thu, May 24, 2018, 12:06 AM Kristian Gabriel <email@example.com>
Sorry for the trouble. Is the footage from Elgato capture device. If yes and using Premiere Pro CC 12.1 or 12.1.1 version, it is a known issue. The only known workaround is to use previous version of the app. Here are the steps: FAQ: How do I reinstall a previous version of Premiere Pro?