For the best results please follow these steps when exporting from Premiere:
- File > Export > Media…
- For resolutions up to full HD 1920 x 1080...
- Set Format to ‘H.264’
- Set Preset to ‘Match Source - Adaptive High Bitrate’
- For 4K resolution...
- Set Format to ‘HEVC (H.265)’
- Set Preset to '4K UHD'
- Select the Output Name to change the name of the output file and location.
- Select ‘Queue’ (to queue in Adobe Media Encoder) or ‘Export’ (to export immediately from Premiere).