iPhone Frame Rate - Errors & Fixes Playing iPhone 4K 60FPS, Slow-mo, Time-lapse Videos

By Reuben Zaback , Updated: Feb.26, 2019

iPhone used to capture videos at 30fps, just before the release of iPhone 6 (6 Plus). The arrival of newer iPhone models makes things confused with various more shooting choices, including Time-lapse mode, 240-fps Ultra Slow-mo mode, and 4K 60-fps capture. Here's the best place to start. Before you shoot at 30fps, 60fps, or 120fps, we will give you a rough idea of the different iPhone video frame rates, the size of iPhone video fps, why iPhone variable frame rate is causing problems in Premiere Pro, other editors, and any iPhone frame rate converter can help change the iPhone recording fps.

iPhone Frame Rate Recording Capability

* 720p at 120 FPS (slow motion) - iPhone 5s, iPhone 6/6 Plus

* 720p at 240 FPS (ultra slow motion) - iPhone 6/6 Plus, iPhone 6s/6s Plus, iPhone 7/7 Plus 

* 1080p HD at 30 FPS (default) - iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6/6 Plus, iPhone 6s/Plus, iPhone 7/7 Plus, iPhone 8/8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

* 1080p HD at 60 FPS (smoother) - iPhone 6/6 Plus, iPhone 6s/6s Plus, iPhone 7/7 Plus, iPhone 8/ 8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

* 1080p HD at 120 FPS (slow motion) - iPhone 6s/6s Plus, iPhone 7/7 Plus, iPhone 8/8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

* 1080p HD at 240 FPS (ultra slow motion) - iPhone 8/8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

* 4K at 24 FPS (higher resolution, film style) - iPhone 8/8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

* 4K at 30 FPS (higher resolution) - iPhone 6s/6s Plus, iPhone 7/7 Plus, iPhone 8/8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

* 4K at 60 FPS (higher resolution, smoother) - iPhone 8/8 Plus, iPhone X, iPhone XR, and iPhone XS/XS Max

If you ask "which iPhone camera fps is the best or should I use iPhone 4K 60fps?" the answer depends. Higher frame rate means smoother motions and better video recordings. But different 4K/HD iPhone frame rates are causing problems.

Errors Playing iPhone Videos with Different Frame Rates

1. iPhone Variable Frame Rate - iPhone MOV not Load to Premiere Pro

Unlike DSLR and other cameras, iPhone uses variable frame rate to shoot videos instead of constant frame rate. This makes no different on VLC, QuickTime Player, and WMP as most video players support VFR. However, VFR is not supported by most editing software. Unless you convert VFR to CFR, iPhone variable frame rate will cause problems like audio out of sync with video, only audio no video, iPhone videos won't import to Premiere Pro, unable to view iPhone videos in Lightworks, etc.

2. iPhone 4K 60FPS Videos Freezes/Stutters

Editing or playing iPhone videos in high frame rate and high resolution is a challenge sometimes. For example, there are users noticing frequent fps drop (like from 60fps to 10fps) during the playback of iPhone 4K 60FPS videos on Apple TV, VLC. The edit of iPhone 60fps videos won't go properly without stutters and jumps on editors like iMovie and LumaFusion. High iPhone video frame rate and resolution is a burden for both software and hardware. In this case, switch 4K 60fps down to 1080P/30fps.

3. iPhone Slow Motion FPS Problem on Instagram, YouTube

iPhone slo-mo videos at 240fps/120fps is not welcome by social sites. For example:

Instagram: Frame rate of 29.96 fps (max 30fps, but should be fixed not variable)

YouTube: 24, 25, 30, 48, 50, 60 are the common frame rate supported

Facebook: maximum frame rate of 30fps for regular videos and 60fps for 360 video

Twitter: maximum frame rate 40fps

Then you will find the 120/240fps iPhone frame rate will causing problem as the service won't correctly recognize and read the video. For example, slow-motions videos on YouTube may play with no audio/sound; when you upload the video to AppStore Connect, it may give you the error "The frame rate of your app video preview is too high."... Then you will need to convert iPhone VFR to CFR and adjust the fps first. (Tips: if you don't want the slow motion part plays as normal video, you may try the email, save and upload trick.)

4. iPhone High FPS Videos Are Too Large

Frame rate is also a factor that decides the final size of a video and higher frame rates will lead to large file size. For example, one minute of iPhone footages at 1080p HD@ 30fps and 60fps take space of 60MB and 90MB. The video sizes of a 4K iPhone video@ 24fps, 30fps and 60fps are respectively 135MB, 170MB and 400MB (in HEVC format). If you're concern about the file size for Email, Instagram or other social media, you can compress iPhone video or record at lower 1080P 60fps.

Process iPhone Videos in High Frame Rate/Resolution without Error

Having a rough idea of iPhone video frame rate and its possible error you may meet, now what you may need to do is:

* Convert iPhone VFR to CFR

* Change iPhone frame rate/resolution

* Resize iPhone 4K 60fps videos

* Edit VFR/HFR iPhone footages

Normally, you can use iMovie or Handbrake to handle video tasks. iMovie won't give you the ability to adjust video settings and offer 4K 60fps output. And the editing features in Handbrake are limited. Accordingly, we recommend VideoProc.

1. Convert VFR to CFR, adjust frame rate, resolutions, aspect ratio, bit rate, etc.

2. Trim, crop, cut, rotate, merge, deshake, denoise, and add affects, etc, easily.

3. Reduce iPhone video size by up to 90% without noticeable quality loss.

4. Convert iPhone HEVC/H.264 videos to mp4, avi, mkv, flv, 3gp, more formats & devices.

5. Unique Levele-3 Hardware Acceleration offers world's fastest speed processing 4K/HD videos.

Free download the frame rate converter on computer.

download videoproc Free download VideoProc on Windows

download videoproc Free download VideoProc on Mac

Step 1: Click Video on the interface > click +Video and import the iPhone videos. Or you can do it by drag and drop.

Step 2: Select an output format from the tab at the bottom.

Tip: To ensure the smallest possible file size, select MP4 HEVC; to ensure the maximum compatibility, select MP4 H.264.

iPhone frame rate converter

Step 3: Click the Option button with a gear icon beside the video info from the video tab to adjust the parameter.

• To convert iPhone variable frame rate to constant frame rate, select the frame rate same as the original and it will be converted into CFR.

• To lower the frame rate, select a frame rate one level lower than the source video is recommended.

• To reduce iPhone video size, adjust the bit rate and resolution. Check the detailed guide on how to resize iPhone videos

adjust iphone slow motion fps

Step 4: At the bottom of the video info tab, there are some basic video editing features available. You can click and trim, cut, crop, cut, rotate, add effects, etc. You can also find a Toolbox button. Click it and you can further process the iPhone videos.

edit iphone 4k 60fps videos

Step 5: After all the settings, click Run and it will start change iPhone frame rate and process the video.

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Reuben Zaback

Hi, I'm Reuben Zaback and I've been an award-winning editor of Digiarty for four years. Writer by day and reader by night, I share programs reviews & tutorials, multimedia solutions, latest tech trends, devices tips, etc. I geek out over Apple products, sports cameras, drones, gadgets and always look to learn something new. My spare time is dominated by sports rehab and part-time study.

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