Download Airflow for macOS

You’ve got a film sitting in a folder on the desktop and a Chromecast plugged into the lounge TV. Open Airflow, drop the file onto its window, pick the lounge Chromecast and hit play. The video appears on the big screen a moment later, with the Mac acting as a quiet remote control.

Drag, pick a cast target, play

• Quick local playback — drag a video file straight into the window
• Picking any Chromecast on the network from a tidy device list
• Keeping things simple — the interface doesn’t bury controls in menus

Intel Mac and English only

• Needs an Intel Mac running macOS 10.12 or later
• Interface is English only
• Version 3.3.10 is a maintenance update with no new feature notes

Plays only what Chromecast handles natively

Will it play every file I throw at it? Airflow leans on Chromecast's own playback, so formats the Chromecast handles natively — MP4, most MKV containers — are the safest bet. If a file stutters or refuses to start, converting it to H.264 in an MP4 container usually sorts it out.

Do I need to keep my Mac awake the whole time? Yes. The Mac does the heavy lifting, so sleep mode stops the stream. Set Energy Saver to keep the Mac awake while Airflow is running, or just nudge the trackpad now and then during a long film.

Can I control playback from the sofa? Not directly. Airflow runs on the Mac, so pause and seek happen from the keyboard or trackpad. The Chromecast remote won't talk to it. That's the trade-off for keeping the app simple.

Does it work with multiple Chromecasts? Yes — every Chromecast on the network shows up in the device list, so you can pick the bedroom stick for one video and the lounge for the next without re-pairing anything. The app remembers the last device you used, which saves a click on repeat sessions.

Is the setup messy? The installer asks for a Gatekeeper bypass — you mount the disk image, run the Open Gatekeeper friendly command, press Enter in Terminal to confirm, then drag the app into Applications. Once that's done, it launches like any other Mac app.

Quieter connections on busy networks

Version 3.3.10 is a quiet maintenance release. Day-to-day use feels the same as 3.3.9 — same device list, same drag-and-drop flow, same English-only interface. What the update brings is under-the-hood stability: fewer dropped connections when the network gets crowded, and smoother recovery if a stream hiccups mid-video. Users coming from earlier 3.x builds may notice the app holds onto a Chromecast connection a little more stubbornly before giving up, which helps on Wi-Fi with patchy signal. No new buttons, no redesigned windows — just a more predictable evening of playback.

Direct cast path vs VLC’s buried menu

Airflow vs VLC. VLC plays everything locally and can stream to Chromecast as a secondary trick, but the casting path is buried in menus and feels bolted on. Airflow does one job — local file to Chromecast — and the whole interface is built around that. For pure casting, Airflow is faster to use. For watching on the Mac screen, VLC wins outright.

Airflow vs Soda Player. Soda Player casts local files and torrents, which sounds handy until you deal with its ads and heavier interface. Airflow keeps the window free of clutter and doesn't try to be a download manager. If you want a torrent client that also casts, Soda Player fits; if you want a focused casting app, Airflow feels lighter.

Airflow vs JustStream. JustStream lives in the menu bar and streams to Chromecast, Apple TV and smart TVs, with subtitle and transcode options. Airflow is a single-window app aimed squarely at Chromecast owners. JustStream covers more devices, Airflow covers one device with fewer distractions — and fewer settings to fiddle with before the film starts.

• macOS 10.12 or newer
• Intel-based Mac
• Chromecast device on the same network