Edit source size and improve video quality

[Jonas5FFC]

Hey, I am a beginner in working with Premiere Pro. 

I wanted to export a video but the quality seems super bad after the export. Also text/titels are blurry.

Here you can see my export settings:

I know that the size of the source is smaller than the output size. But how can I change the size of the source? All pictures, clips and files i use in this project have a size of 1920x1080 minimum. As I said: also text items and titles seem blurry after the export and i guess it is also because of the source size.

Can you help me with this?

Thanks!

[Richard M Knight · Accepted solution]

You will need to change your source sequence settings. These settings are found at the top of the sequence menu tab.

[Jonas5FFC]

Thanks!