Facebook Reels displays full-screen vertical video, same as TikTok, Instagram Reels and YouTube Shorts. Meta operates Facebook and Instagram together, so their technical handling of Reels tends to be similar, but Facebook has its own help pages and its own current duration and file-size limits, which can differ from Instagram's at any given time. Check Facebook's current Reels specifications before an upload where the exact limit matters, rather than assuming Instagram's numbers apply directly.
Aspect ratio and resolution
9:16 vertical is what the Facebook Reels player is built around, so export your ReelWorkshop compilation at 1080x1920 for the best result, or 720x1280 if file size is more of a concern for your connection or your remaining export minutes for the month. Facebook re-encodes uploaded video for delivery across its network of devices, so, as with the other platforms here, your exported bitrate is a starting point, not the final delivered quality.
Setting up the export
- Choose your edit length
A 60-second ReelWorkshop plan is a safe starting point for Reels; longer edits (75 or 90 seconds) also upload fine as vertical video, but confirm Facebook's current Reels length limit if you're aiming specifically for the Reels placement rather than a regular Facebook video post.
- Set resolution to 1080x1920
Gives the sharpest playback in the Reels player.
- Decide on audio
Keep the audio from your source clips if it's usable, or mute in ReelWorkshop if you'll add music inside Facebook's own Reels composer.
- Render, download, upload
Download the finished MP4 from the ReelWorkshop Exports page and upload it through the Facebook app's Reels creation flow.
Safe areas in the Facebook Reels UI
Facebook overlays the caption text, page or profile name, and the like/comment/share icon column, generally along the bottom and right edge of the screen, similar to Instagram's layout since both are Meta products. Keep any burned-in captions or logos away from those edges. It's also worth remembering that a video posted as a Facebook Reel can sometimes be reshared or viewed in non-fullscreen contexts like a regular feed post, so avoid packing essential information into the extreme edges even when you're confident it will only ever appear as a Reel.
Even though Meta operates both platforms, Facebook Reels' current duration and file-size limits aren't guaranteed to match Instagram's at any given time. Check each app's own current specs separately.
Mistakes to avoid
- Copying Instagram's specs onto Facebook without checking Facebook's own current Reels limits.
- Uploading a compilation with text tight against the bottom edge, where the caption and page name usually sit.
- Exporting a long edit (90s) intended for the Reels shelf without confirming Facebook currently allows that length there.
- Skipping the preview step in ReelWorkshop and only noticing framing problems after the export minutes are already spent.
When this isn't the right workflow
ReelWorkshop won't add Facebook's in-app music, stickers, polls or auto-captions — add those after uploading. It also doesn't do multi-track audio mixing, so if you need a voiceover layered over background music, that mixing has to happen before you import clips, or in a separate audio tool. ReelWorkshop's role is turning your own clips into a well-paced vertical MP4 ready for Facebook's uploader.
Do I need a Facebook Page to post Reels?
That depends on Facebook's current posting rules for personal profiles versus Pages, which is outside what ReelWorkshop controls — check Facebook's own help pages for current policy.
Can I reuse the same export for Facebook and Instagram Reels?
Often yes, since both expect vertical 9:16 MP4 with H.264/AAC, but double-check each app's current duration and size limits before assuming one export satisfies both.