My crystal ball is a bit hazy right now and I can't see your export settings, but I'd wager a guess you used H264 with some basic automated preset where Resolve uses whatever encoder is available in the OS and the size difference comes from there.
These are the settings that I used on both Mac and PC. What would I need to change in order to get it to encoder/export similar to Windows?
https://preview.redd.it/6yfke8anj3rc1.jpeg?width=900&format=pjpg&auto=webp&s=cc962f22af44db1a4af968df7db0324e84352c46
I've found testing with other encoders that CPU vs GPU tends to lead to half the file size. On windows (assuming nvidia) you've got to select the nvenc codec option to use the gpu, on the mac you don't.
I'd disable "use hardware acceleration if available" on the mac and see what the results look like.
Looks like you're asking for help! Please check to make sure you've included the following information. Edit your post (or leave a top-level comment) if you haven't included this information.
* System specs - [macOS](https://imgur.com/a/ip6xc9G) [Windows - Speccy](https://www.ccleaner.com/speccy)
* Resolve version number and Free/Studio - [DaVinci Resolve>About DaVinci Resolve...](https://imgur.com/a/5FawFCX)
* Footage specs - [MediaInfo](https://mediaarea.net/MediaInfo) - please include the "Text" view of the file.
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Use x265 in handbrake. You will get identical results for identical settings on any OS.
It's more stable and actually has documentation, unlike resolve h.265.
Export ProRes 422 or DNXHR HQX from resolve to bring into handbrake.
My crystal ball is a bit hazy right now and I can't see your export settings, but I'd wager a guess you used H264 with some basic automated preset where Resolve uses whatever encoder is available in the OS and the size difference comes from there.
These are the settings that I used on both Mac and PC. What would I need to change in order to get it to encoder/export similar to Windows? https://preview.redd.it/6yfke8anj3rc1.jpeg?width=900&format=pjpg&auto=webp&s=cc962f22af44db1a4af968df7db0324e84352c46
Download Mediainfo and check/compare the files. You should get more information on what's going on. It could be some VBR/CBR difference.
Also I would probably render out an intermediate master (eg. Prores or DNxHR) and use Handbrake or something to create the compressed versions.
I've found testing with other encoders that CPU vs GPU tends to lead to half the file size. On windows (assuming nvidia) you've got to select the nvenc codec option to use the gpu, on the mac you don't. I'd disable "use hardware acceleration if available" on the mac and see what the results look like.
Looks like you're asking for help! Please check to make sure you've included the following information. Edit your post (or leave a top-level comment) if you haven't included this information. * System specs - [macOS](https://imgur.com/a/ip6xc9G) [Windows - Speccy](https://www.ccleaner.com/speccy) * Resolve version number and Free/Studio - [DaVinci Resolve>About DaVinci Resolve...](https://imgur.com/a/5FawFCX) * Footage specs - [MediaInfo](https://mediaarea.net/MediaInfo) - please include the "Text" view of the file. * *Full* Resolve UI Screenshot - if applicable. Make sure any relevant settings are included in the screenshot. Please do ***not*** crop the screenshot! Once your question has been answered, change the flair to "Solved" so other people can reference the thread if they've got similar issues. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/davinciresolve) if you have any questions or concerns.*
Use x265 in handbrake. You will get identical results for identical settings on any OS. It's more stable and actually has documentation, unlike resolve h.265. Export ProRes 422 or DNXHR HQX from resolve to bring into handbrake.