Every time I try to import media, in this case an mp4 video using AVC, Vegas Pro freezes permanently and has to be manually shut down. As a test I tried importing the same media into an old version of Vegas 13 where it was imported fine with no problems. Any help would be appreciated. For more info, please find attached the dxdiag output as well as information about the source media's encoding: https://filebin.net/na375fdrj651msoe
It was suggested to me that the issue may be the fact the source video has a variable bit rate, but after waiting 45 minutes for ffmpeg to convert one video to a constant bitrate, which is still hasn't finished doing, I'm hoping the solution is something simpler as converting all the source material in this way would be unfeasible.