Exported sequence is shorter in length

[Michael5DC3]

AN EXAMPLE OF MY ISSUE: My sequence is 30 seconds in length. When I export the sequence, the length of the file ends up being 4 seconds short. I have tried different sequence and export settings, with the same result. The only setting that seems to keep the file length to the composition is "Format: H264  Preset: Match Source - High bitrate" 

My timeline settings are: Canon XF MPEG2 1080i/p

Timebase: 29.97 frames/sec

[Peru Bob]

Please use the free MediaInfo and post a screenshot the properties of your media in tree view:
https://mediaarea.net/en/MediaInfo

Many users are having issues with VFR. If the file is variable frame rate, use Hand brake to convert to constant frame rate:
https://handbrake.fr/downloads.php
Here is a tutorial:
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y

[Michael5DC3]

So, I have ran a bunch of test. I've tried various sequence settings and export settings. There was one or two solutions that worked when I tested it. But when I attempted those same settings the next day, they didn't work. I also imported the file, that I had exported, back into Premiere. Sometimes they were the correct length. Sometimes, they were a few frames short.

This problem that I am going though is with Premiere Pro 2020.

I still have the Premiere Pro 2019. I re-created my original settings and experimented with what worked initially (as I had stated above), and everything was fine. The file's lengths were not clipped. I think there is a glitch somewhere within the Premiere Pro 2020 version.

[Peru Bob]

Was the project started in 2019 or 2020?

If 2019, try opening a new project in 2020 and import the 2019 project into it.