by karlo pavicic ravlic·Workflow
Images © karlo pavicic ravlic. Used for product review; image policy.
Keyframe Pro Sync stands out in the Superhive library as a focused bridge rather than a standalone player, keeping Blender and Keyframe Pro in step so reference footage follows your animation work. Note that it's built by a hobby developer, and Keyframe Pro must be obtained separately.
Keyframe Pro Sync is a studio tool for animators working with reference footage, connecting Blender and Keyframe Pro. It acts as a link between the two programs, so you don't have to switch software to start playback, readjust timelines, frames, or bookmarks. Instead, you set up footage, offsets, and playback control directly from Blender. Keyframe Pro itself is not included; you'll need to obtain it separately.
Scrubbing and playback synchronize with Keyframe Pro in both directions, and you pick the footage to sync from a dropdown menu. Actions remember which clip you used and switch to it automatically, and you can pin a clip so it stays active across actions. Bookmarks from Keyframe Pro import into Blender as frame markers in object mode or as keyframes when a bone is selected. One button matches Blender's preview range to a clip's length, and another handles timeline offsetting.
The addon includes a version check that flags whether you're on the right version for your Blender build and whether an update is available. It is distributed under CC BY-NC-SA and was tested with Blender 3.6.2, 3.6.22, and 4.1.1.
Keyframe Pro Sync is best for animators in Blender who work with reference footage in Keyframe Pro and want to control playback and syncing without switching between the two programs.
Keyframe Pro Sync is completely free to download and use.
Keyframe Pro Sync was tested with Blender 3.6.2, 3.6.22, and 4.1.1, alongside Keyframe Pro 1.15.1 and 1.15.2 and PythonClientAPI 1.14.1. It also includes a built-in version check that tells you whether you're running the correct version for your current Blender build and whether an update is available. Because it works as a link between two programs, keeping both Blender and Keyframe Pro on compatible versions matters for a stable connection. For versions outside those listed, check the developer's page before relying on it in a production project.
Keyframe Pro Sync does not include Keyframe Pro. It works purely as a link between Blender and Keyframe Pro, and the developer states that Keyframe Pro is neither included nor sold by them. You'll need to obtain Keyframe Pro separately to use the sync features, since scrubbing, playback, footage selection, and bookmark import all depend on a live connection to the running Keyframe Pro software. To try or buy Keyframe Pro, visit the Keyframe Pro website for current details.
Keyframe Pro Sync installs like a standard Blender addon. Download the zip file, then open Blender's Preferences under Addons, choose Install, and select the zipped file. Enable it with the checkbox, searching for 'Keyframe' if it doesn't appear right away. Once enabled, the Keyframe Pro Sync panel shows up under the 'Animation' section of the 'N' panel. From there you launch Keyframe with the power icon and start syncing with the link icon, which reports 'Status: Connected' when the connection succeeds.
Keyframe Pro Sync shows a 'Framerate mismatch' warning when the video's framerate differs from your project's. You can resolve it by converting the video to the desired framerate, or press the Match Framerate button, which sets Blender's playback rate to that of the video. The developer also suggests setting Blender's timeline playback to 'Frame Dropping' for the least lag, and increasing the cache size in Keyframe Pro's own General settings for smoother playback.
Keyframe Pro Sync is listed as free in this catalog. Keep in mind it is distributed under the CC BY-NC-SA license, and that it only functions as a link. Keyframe Pro, the companion software it connects to, is a separate product that isn't included here. For current licensing terms and to confirm what's covered, check the developer's page. The developer also notes they build this as a hobby, so support and fixes aren't guaranteed.
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