Switch between A-roll and B-roll

[Mark-Antoniy]

Hello guys! I have a problem. After export my video and play it looks good, but when b-roll start or end and switch to a-roll it looks like a jump cut and sometimes looks choppy. How I can fix it and make my video smoothly. I would not like this to be noticed. But I don't want to use always transitions. I know there are many professionals who would help. Thanks in advance for your help! I appreciate it! 

[RobShultz]

Is your footage variable frame rate? If so you may want to convert it to a fixed frame rate before bringing it into Premiere. Media Encoder may have a preset that you can use.

[Mark-Antoniy]

I think that is the problem. But I'm not sure how to fix it. 

[Peru Bob]

I think that is the problem. But I'm not sure how to fix it. 

By @Mark-Antoniy

Please use the free MediaInfo and post a screenshot of 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 Handbrake 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

Shutter Encoder may also be used to convert to Constant Frame Rate:
https://www.shutterencoder.com/en/

[smrpix]

I'm not seeing any technical glitches on the sequence you've posted.  What I am seeing is what appears to be really ugly use of auto-reframe on the b-roll material which bangs to a stop pretty harshly at some of the tails.  If you're using auto-reframe, turn it off and adjust your reformatting manually.