Premiere Pro 2024 vs Premiere Pro 2021: what is different?
Premiere Pro 2024 (24.x, released Oct 2023) saves projects with internal schema version 42. Premiere Pro 2021 (15.x, released Mar 2021) only understands up to 39, which is why opening the file shows “This project was saved in a newer version of Adobe Premiere Pro”. The message is a gate, not a judgement about the content.
| Premiere Pro 2024 | Premiere Pro 2021 | |
|---|---|---|
| Release | Oct 2023 | Mar 2021 |
| App build | 24.x | 15.x |
| Project Version attribute | 42 | 39 |
| XML serialisation | Dense (full fields) | Dense (full fields) |
What the converter changes in your file
A .prproj is gzip-compressed XML. The tool decompresses it, edits the root Project element, and compresses it again:
- <Project ObjectID="1" ClassID="62ad66dd-0dcd-42da-a660-6d8fbde94876" Version="42"> + <Project ObjectID="1" ClassID="62ad66dd-0dcd-42da-a660-6d8fbde94876" Version="39">
Both 2024 and 2021 use the dense serialisation, so no fields need rebuilding. Changing the version is the only edit required.
What you may lose going from 2024 to 2021
Features below were introduced after Premiere Pro 2021. Their data may stay in the XML, but Premiere Pro 2021 has no code to interpret it, so expect them to be ignored, flattened or missing:
Added in Premiere Pro 2024
- Text-Based Editing and transcript-driven cuts
- Enhance Speech and filler-word detection
- Redesigned Lumetri Color interface
- Background auto-save
Added in Premiere Pro 2023
- Speech-to-Text upgraded to 18 languages
- Mask colour visualisation and improved masking tools
- Sequence locking for Team Projects
- Faster hardware-accelerated export
Added in Premiere Pro 2022
- Speech-to-Text transcripts and rebuilt captions tracks
- New workspace layouts and enhanced proxy workflow
- Remix tool and Apple silicon support
Why this jump is rated medium risk
- 3 major releases separate these versions, so more newer features are unsupported.
Step-by-step: open a 2024 project in 2021
- Duplicate your
.prproj. Never convert your only copy. - Drop it into the panel above and choose Premiere Pro 2021 as the target.
- Download the converted file and open it in Premiere Pro 2021. Expect a prompt about converting an older project, which is normal.
- Create a brand new empty project in Premiere Pro 2021 and import the converted project into it, rather than continuing in it.
- Scrub every sequence. Relink media if drive letters or paths differ.
Don't have Premiere Pro 2021? Open the Creative Cloud desktop app, choose All apps → Premiere Pro → Other versions and install it alongside your current version.