smartfilming

Exploring the possibilities of video production with smartphones

#19 Stabilizing shaky video footage on your smartphone (Android/iOS/WindowsMobile) — 5. October 2019

#19 Stabilizing shaky video footage on your smartphone (Android/iOS/WindowsMobile)

The fact that nowadays pretty much everyone owns a smartphone and shoots video with it has brought a gigantic wave of shaky handheld footage along. While some folks are actually allergic to any kind of shakiness in video, I personally think that depending on the amount and context it can work just fine – but definitely not all the time and under any circumstances. So there is a need to stabilize shaky handheld footage. Now the best thing to get smooth n’ stable footage is to avoid shakiness in the first place while shooting. While there are techniques for shooting (more) stable video handheld, the most common thing would be putting the phone on a tripod (using any kind of rig or clamp for mounting it). But maybe you want to move around a bit? More and more smartphones do have internal stabilization, be it on the hardware side with OIS (optical image stabilization) or on the software side with EIS (electronic image stabilzation). Over the last years there has also been a considerable and increasingly affordable influx of (motorized) gimbals that allow smooth camera movements. But let’s be honest: Unless you’re going to a planned shoot, you probably won’t carry around a tripod or gimbal (if you have one) – as compact as they have become over time, they are still too big and clunky to just put in your pocket. So it’s likely that you will find yourself in situations where you shoot video handheld and want to smooth out some distracting jitter afterwards. While most desktop video editing software has a built-in stabilizer function these days, things don’t look quite as bright on mobile but there are still a few (good) options.

Android

Google Photos
The easiest way to stabilize a pre-recorded video clip on your mobile phone is probably to use a little known feature of an immensely popular (and completely free!) app: Google Photos. Select any video clip and open the edit panel (sliders icon in the middle), then choose „Stabilise“. When I first used it I was really surprised how well it worked! The stabilization process doesn’t alter the resolution and frame rate but you will have to live with a lower video bitrate (sample clip: 17 to 11 Mbit/s) while the audio bitrate remains the same. Google Photos is basically available for all Android devices which is great. I have however found that very ancient pre-Android 5 devices (I tested it with two devices running Android 4.4) do not have the stabilization feature baked into the app. “What about iOS?” you may ask as Google Photos is also available on the Apple Appstore. Unfortunately, just like with the ancient Androids, the stabilization feature is not available in the iOS version of the app. Maybe at some point in the future.

PowerDirector
If you are looking for a stabilization feature already built into an advanced mobile video editing app with which you can produce your final edit, then Cyberlink’s PowerDirector is currently your only choice across platforms. Select the clip in your timeline, open the editing panel by tapping the pen icon on the left side bar and choose „Stabilizer“. Unlike with Google Photos where the stabilization is basically a one-button operation, PD does give you a 0-100 slider to increase or decrease the level of correction (default value is 50). The higher the level of correction, the more the image will be cropped. PD can keep the footage’s fps as long as it is a frame rate that is supported for export within the app. That means 24, 30 and 60fps – no PAL frame rates unfortunately. Resolution on the other hand shouldn’t be a problem at all, PD supports export up to UHD/4K resolution. You also get to choose between three bitrate options (Smaller Size/Standard/Better Quality), the actual bitrate will be depending on your export resolution. In the case of the sample clip used here the bitrate of 17Mbit/s remained unaltered when using „Better Quality“ but that seems to be the maximum for projects with FHD resolution. If you use a clip recorded in a higher bitrate it will be compressed upon export. The audio bitrate is reduced (sample clip 320 to128 Kbit/s). PD is free to download with watermark and some restrictions regarding certain features – watermark-free export and the complete feature set are only available with a paid subscription. KineMaster, which I generally regard as the best video editing app on Android, is still missing this feature by the way.

Microsoft Hyperlapse Mobile
There’s a third option on Android. Microsoft Hyperlapse Mobile shouldn’t be confused with Instagram’s „Hyperlapse“ app (which is only available on iOS so far). They are actually somewhat similar in that their main purpose is to speed up and stabilize video but while Instagram’s app can only do this for footage shot „live“ within the app, Microsoft’s version allows importing pre-recorded clips. By default, the result you get will be a 4x sped up clip but if you want the original speed, you can move the speed slider to „1x“ instead. As for the resolution, Microsoft Hyperlapse only supports import of clips with up to FHD resolution and you have to activate FHD export in the settings as the default setting is HD (720p). The frame rate remains the same, the video bitrate is seriously crunched (sample clip: 17 to 8 Mbit/s), the audio bitrate is kept intact. The stabilization result isn’t as good as Google’s Photos and while the app is free, you do get a Microsoft Hyperlapse branded bumper screen. There are no in-app purchases to get rid of this so you will probably have to trim it off using another app.

iOS (iPhone/iPad)

Emulsio
As mentioned above, while Google Photos is available for iOS, the stabilization feature from the Android version is not. And neither is PowerDirector or Microsoft Hyperlapse Mobile. Also, none of iOS’s best video editing apps including the likes of Luma Fusion, KineMaster, Adobe Rush, Videoleap or Splice feature a stabilization tool at this point. The only (fairly good) option to stabilize pre-recorded video that I was able to find was an app called Emulsio. The interesting thing about Emulsio is that unlike all other apps for stabilizing mentioned here, there’s a whole bunch of controls over the stabilization process at your fingertips. Just like PD it gives you a 0-100% scale for the strength of the correction, cropping more of the frame the higher the % is. But on top of that, you get control over which axes (X,Y,XY) are corrected, you can switch rotation compensation and wobble removal on or off and even reduce rolling shutter. Emulsio does keep resolution and frame rate intact but reduces both video bitrate (sample clip 17 to 15Mbit/s) and audio bitrate (320 to 256Kbit/s). It’s free with watermark, you can get rid of the watermark by purchasing a 8.99€ pro upgrade.

Windows Mobile

Microsoft Hyperlapse Mobile
Before I wrap this up let me tell you that while Microsoft Hyperlapse Mobile isn’t available for iOS, it (still) is for their own (now quasi-dead) mobile platform Windows Mobile. So just for the highly unlikely case that you are a die-hard Windows Phone enthusiast still holding on to your Lumia: You can join the stabilization fun! It basically works like the Android version described above but only supports import/export of HD (720p) clips, higher resolution clips will be transcoded to 720p. So when the resolution is reduced it shouldn’t come as a surprise that video bitrate (17 to 7 Mbit/s) and audio bitrate (320 to 192 Kbit/s) are as well. The frame rate remains the same as the original source clip.

And here’s a video presenting the deliberately shaky sample clip (shot on a Motorola Moto Z in 1080p 30fps handheld) in stabilized versions by each mentioned app (in the case of Power Director and Emulsio the default settings were used):

Have I missed something important? Did a new app or new feature for an established app just come out? Let me know in the comments or hit me up on the Twitter (@smartfilming).