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I just ... I know this exists in a lot of different posts already, but I need to vent somewhere because I am just at my wit's end.
Using OSX (latest), and the latest version of Premiere, I have switched my graphics rendered multiple times, and am I am now having issues simply stitching two clips together with transitions.
Both clips are truncated versions of longer ones (manually cut in the timeline and shortened). The first clip has it's speed reduced to 50%, and the second is normal. When I use a cross dissolve between the two (<1 sec), I see, in the cross dissolve, additional 'tail' from the first clip that I cut, which I understand (the nature of a cross dissolve), however, it doesnt seem like the speed reduction is applied to that part, so there's this weird acceleration in the clip during the transition
Even more frustratingly, once I deleted the transition, the clip had been inexplicably altered, to where the very last few frames of the truncated clip now suddenly "reset" to the beginning few frames. So there's this awkward jump at the end of the clip as if the playhead rewound back to the beginning.
I'm pressed against a deadline, and now im battling with software over something that used to be objectively simple, and im about to flip out.
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Please tell us your system specs: OS version, Premiere version, amount of RAM, Hardware specs including graphics card
Have you checked that you have the latest driver for your graphics card? There have been serious issues with Nvidia cards that were solved by either updating to the latest driver or rolling back to an earlier one.
And by any chance are any of your sources from a smart phone or screening recording program like OBS? If so, the issue is probably that they have a variable frame rate.
Here's an article about it.
And here's how to solve the problem
use mediainfo to determine whether your source is variable or constant frame rate
https://mediaarea.net/en/MediaInfo/Download
if it's variable use handbrake to convert to constant frame rate
https://handbrake.fr
and here's a tutorial on how to use handbrake
https://www.youtube.com/watch?time_continue=34&v=xlvxgVREX-Y