Slow motion percentage
20.0%
Playback speed when conformed to timeline.
Free video tool
Frame Rate and Slow Motion Calculator
Calculate slow motion percentage, playback speed, recommended shutter speed, shutter angle, timeline compatibility, and flicker warnings for video work.
Example
120→24
Speed
20%
Slow motion
5x
Slow motion result
120fps on a 24fps timeline
Capture fps is how many frames the camera records. Timeline fps is how many frames the edit plays each second.
Playback speed
5.00x slow
How much slower the clip becomes.
Recommended shutter
1/240
180 degree shutter rule at capture fps.
10 sec capture plays
50.0s
1200 timeline frames.
Visual timeline comparison
5.00 capture frames per timeline frameCapture frames stretched across the edit
Capture stream120fps
Timeline playback24fps
The capture row represents frames recorded during the same moment. When conformed to the timeline, those frames are spread out, creating slower playback.
Motion blur explanation
120fps conformed to 24fps plays at 20.0% speed. Your shutter is 1/240, which behaves like a 180 degree shutter. That is close to the familiar 180-degree motion blur look many filmmakers use.
Flicker warning
Looks safe for 60Hz lighting: 1/240 is near 1/240. Still test LEDs, dimmers, signage, and practical lights.
Timeline compatibility
Clean conform: 5 capture frames map to each timeline frame interval. Best mainstream delivery balance, but high fps may crop or reduce bit depth.
Video-capable cameras
Research cameras for high frame rates
Actual high-fps modes can depend on resolution, codec, crop, bit depth, autofocus, overheating limits, and media type.
Fujifilm X100VI
40MP X-Trans 5 HR sensor · 5-axis in-body stabilisation
View product
Sony A7R V
61MP full-frame sensor · Dedicated AI processing unit
View product
Sony A1
50MP stacked full-frame · 30fps blackout-free
View productFind video-capable cameras
Research bodies with high frame rates, video codecs, stabilization, autofocus, and heat management.
OpenBitrate/storage calculator
Estimate bitrate, card capacity, record time, and storage needs after choosing frame rate and resolution.
OpenPlan a video shoot
Turn frame-rate choices into a practical camera, lens, audio, battery, and storage checklist.
OpenVideo camera examples
Cameras to research for slow motion
Frame-rate specs are only the start. Compare recording limits, crop, codec, autofocus, rolling shutter, stabilization, heat, and media requirements before buying.
Fujifilm
In high demand
Fujifilm X100VI
The cult compact, now with IBIS and 40MP
4.8(1,240)96% resale
$2,190.63
+2.1% 30d
Sony
Fairly priced
Sony A7R V
61MP resolution monster with AI AF
4.8(1,100)85% resale
$5,066.26
-1.1% 30d
Sony
Fairly priced
Sony A1
The no-compromise stacked flagship
4.8(700)86% resale
$8,281.65
0.0% 30d
Canon
Fairly priced
Canon EOS R5 Mark II
8K hybrid flagship with eye-control AF
4.8(520)85% resale
$5,480
0.0% 30d
Nikon
Fairly priced
Nikon Z8
The mini-Z9 that stole the show
4.8(1,300)86% resale
$5,096.40
0.0% 30d
Nikon
Fairly priced
Nikon Z9
Nikon's integrated-grip flagship
4.8(900)85% resale
$7,007.55
0.0% 30d
Frame rate FAQ
Slow motion, shutter angle, and flicker without guesswork
Use the calculator for planning, then confirm exact camera recording modes and test under the actual lights you will shoot with.
How do I calculate slow motion percentage?
Divide the timeline frame rate by the capture frame rate, then multiply by 100. For example, 120fps on a 24fps timeline plays at 20% speed, or 5x slow motion.
What shutter speed should I use for slow motion?
A common starting point is the 180-degree shutter rule: shutter speed is roughly 1 divided by double the capture frame rate. At 120fps, that is about 1/240.
What is shutter angle?
Shutter angle describes motion blur relative to frame rate. A 180-degree shutter is open for half of each frame interval, creating a familiar cinematic motion blur.
Why do lights flicker in slow motion?
Artificial lights pulse with local power frequency or electronic drivers. Certain shutter speeds and frame rates can capture that pulsing as flicker or banding.
Do all cameras support 120fps or 240fps?
No. High frame rates often depend on resolution, codec, crop, bit depth, autofocus, overheating limits, and card speed. Always verify a camera's exact recording modes.
Continue from Slow Motion
Related tools, product categories, and buying paths
GearAtlas connects each tool into comparison, product discovery, account saves, wishlists, kit planning, and tailored recommendations.
Bitrate / Storage Calculator
Estimate memory card, SSD, and backup storage needs from resolution, codec, bitrate, and shoot days.
Open toolShoot Planning Assistant
Turn a shoot type, location, lighting, duration, weather, and deliverable into a packing checklist.
Open toolAI Gear Advisor
Ask for camera, lens, kit, upgrade, compatibility, used buying, and workflow advice with product cards.
Open toolBuying guides
Personalize this tool
Save results to your gear locker, wishlist, kits, price alerts, and advisor history.