How to stream downloaded files from your smartphone to your Chromecast

Google's tiny media streamer can be used to play downloaded files on a big screen

Use LocalCast to stream locally stored files to Chromecast.

Use LocalCast to stream locally stored files to Chromecast.

The Chromecast has just hit Australia, and plenty of people are excited about it. But one question we keep getting asked is whether the Chromecast can be used to stream videos that have been downloaded from the Internet. The short answer is ‘yes’. The long answer is ‘you need an app to do it’.

The way Chromecast works, your smartphone, tablet, and laptop, all act as remote controls of sorts to get content flowing through the Chromecast, which is plugged in to an HDMI port on a TV. While the Chromecast is designed specifically to very easily stream YouTube and other Google content on a big screen, it can also be used to stream regular, downloaded movies and TV shows. However, in order to do so, you need to have a third-party app installed that can act as a media server, and which supports Chromecast, of course.

One of the best apps we’ve found for the job so far is LocalCast. It’s available on Google Play and it’s ad supported, so you get a few ads showing up on your phone screen now and then while a video is playing. What’s good about it is that it can stream files that are stored directly on your phone, or even ones that are stored and shared in network locations. All you have to do is browse the location that you’re interested in and fire up the files you want to watch.

If you store all your media on a NAS device at home, then LocalCast can be used to browse all that content and stream it to your Chromecast. You can use DLNA if your NAS supports it, or just SMB, which we prefer as it allows you to easily browse folders to find specific content. To add your NAS device, you have to know its IP address, and you have to supply your login credentials if you have your folders password protected.

In this scenario, your smartphone or tablet becomes the ‘remote control’, since you are using it as the interface to browse and play files from the NAS to the Chromecast -- you can still use your phone for other things while files play in the background. We found the performance of the streams to be a mixed bag, but overall think it’s a good solution. For example, standard definition files streamed perfectly across our network. Full HD files also streamed well enough, but there was some stuttering at the start and also during random intervals in the playback.

We should note that not all files can be streamed through the Chromecast using LocalCast. In fact, it will only support files that are encoded using the H.264 codec, and which have either an MP4 or MKV file type extension. You won’t be able to play back other files types, such as AVI, through LocalCast. For those types of files, another way to play them is to use a media server such as Plex on your laptop, and then run those files to the Chromecast through the Chrome Web browser.

Your wireless network needs to be fast enough and stable enough to support streaming these types of files, otherwise you will experience poor playback. We used a Billion BiPAC 8800AXL for our tests. The NAS device was connected via Gigabit Ethernet, our phone was connected via the 5GHz wireless network, and the Chromecast was connected via the 2.4GHz network. The router was next to the Chromecast. If your router is too far away from your TV and Chromecast, then you might need to look into boosting the wireless signal by using a wireless extender.

If you use another app to stream files, leave a comment below to let us know.

Join the newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.
Elias Plastiras
Show Comments

Cool Tech

Breitling Superocean Heritage Chronographe 44

Learn more >

SanDisk MicroSDXC™ for Nintendo® Switch™

Learn more >

Toys for Boys

Family Friendly

Panasonic 4K UHD Blu-Ray Player and Full HD Recorder with Netflix - UBT1GL-K

Learn more >

Stocking Stuffer

Razer DeathAdder Expert Ergonomic Gaming Mouse

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles


PCW Evaluation Team

Edwina Hargreaves

WD My Cloud Home

I would recommend this device for families and small businesses who want one safe place to store all their important digital content and a way to easily share it with friends, family, business partners, or customers.

Walid Mikhael

Brother QL-820NWB Professional Label Printer

It’s easy to set up, it’s compact and quiet when printing and to top if off, the print quality is excellent. This is hands down the best printer I’ve used for printing labels.

Ben Ramsden

Sharp PN-40TC1 Huddle Board

Brainstorming, innovation, problem solving, and negotiation have all become much more productive and valuable if people can easily collaborate in real time with minimal friction.

Sarah Ieroianni

Brother QL-820NWB Professional Label Printer

The print quality also does not disappoint, it’s clear, bold, doesn’t smudge and the text is perfectly sized.

Ratchada Dunn

Sharp PN-40TC1 Huddle Board

The Huddle Board’s built in program; Sharp Touch Viewing software allows us to easily manipulate and edit our documents (jpegs and PDFs) all at the same time on the dashboard.

George Khoury

Sharp PN-40TC1 Huddle Board

The biggest perks for me would be that it comes with easy to use and comprehensive programs that make the collaboration process a whole lot more intuitive and organic

Featured Content

Product Launch Showcase

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?