WebM is a video-audio format for delivering video on HTML 5 websites. Offering high definition video quality, WebM files save much space with the smaller file size than other web video files including FLV. But the WebM format is only for HTML 5 websites to stream videos online and few portable devices and players currently support playing this kind of files. That’s to say, if you have downloaded some WebM videos on your Mac OS X (El Capitan included), you can neither transfer WebM to iPhone, iPad or other devices for playing on the move, nor import WebM into iMovie, Final Cut Pro etc. for editing.

Simple Way to Convert WebM Files on Mac

To convert WebM on Mac, UniConverter is a good choice with high reputation. It can convert WebM to all popular video and audio formats like AVI, MP4, MOV, M4V, FLV, MKV, MPG and more. As an easy-to-use Mac app, the program can finish your WebM conversions within only 3 steps.

Step-by-step Guide to Convert WebM Videos with iSkysoft

Step 1. Add the WebM files

You can directly drag and drop your original WebM HTML 5 videos to the Mac or head to "File" menu and choose "Load Media Files".

Step 2. Set your output format

Open the output formats list and choose any available one according to your needs. For instance, if you are about play your WebM videos on iPhone, choose the preset for iPhone offered.

Step 3. Start to convert WebM on Mac

After making all settings, please click the "Convert" button to start converting your WebM files.

This Mac WebM Converter app keeps updating to expand your digital enjoyment like support the new released devices like iPhone 7, expand output formats and provides more optimized presets for phones, tablets and so on to simplify the conversions. The UniConverter for Mac also makes all-out efforts to save your time like speed up the conversion by using the latest decoding and encoding techniques, convert several videos and audios at the same time etc. In addition, the WebM Converter for Mac provides some useful edition functions like cropping, trimming, video adjustment, adding watermark & subtitle and more. Detailed info: User Guide of UniConverter.

Optional: Free Online WebM Converter

You can also try online video converter to convert your WebM HTML 5 files to different format as needed, if you don't want to install a computer program. Try it below:

Note: Because the online tool doesn't support "https", so if the content below was blank, please manually click the "Shield" icon on the right of your browser address bar to load the script. This action is secure without any harm to your data or computer.