Meta Brings AV1 Codec to Real-Time Calls, Video Quality Takes a Leap

For most people, a video call either looks good or it doesn't, and the reasons usually feel invisible. Behind that simple experience sits a codec, the piece of software that decides how every frame is squeezed down to fit through a network connection and reassembled on the other end. Meta has now confirmed that it is rolling out AV1, the royalty-free codec backed by the Alliance for Open Media, across its real-time communication systems at scale. The shift matters because AV1 promises noticeably better image quality at the same bandwidth, or the same quality at lower bandwidth, which in the messy reality of mobile networks can be the difference between a sharp call and a smear of compression artifacts.

The appeal of AV1 has never been in doubt; the difficulty has always been in deployment. Real-time communication is unforgiving in ways that streaming video is not. A movie can be encoded once, carefully, hours before anyone watches it, but a live call has to be encoded and decoded in milliseconds, on devices that range from the latest flagship phones to years-old budget hardware. Meta's engineers describe wrestling with exactly this spread of capability, deciding when a device is powerful enough to handle AV1 in software, when hardware acceleration is available and trustworthy, and when the system should quietly fall back to an older codec rather than drain a battery or stutter a call. Codec selection, in other words, became less a one-time decision than a continuous negotiation with whatever device happens to be on the other end.

The harder problems showed up in the details of keeping a call stable. Real-time bitrate control means constantly guessing how much data the network can carry from one moment to the next and adjusting the encoder to match, because overshooting causes freezes and undershooting wastes the quality headroom AV1 was supposed to deliver. Error resilience is its own discipline: when packets drop, as they always eventually do, the system has to recover without the picture dissolving or the call collapsing. Meta walked through how it tuned AV1's encoding tools to degrade gracefully under loss rather than fail catastrophically, a kind of engineering that rarely gets noticed precisely because, when it works, nothing appears to happen.

What makes Meta's account worth reading is that it treats this as an infrastructure story rather than a marketing one. Adopting a codec across a platform used by billions is not a feature toggle but a multi-year campaign touching encoders, decoders, network logic, and device telemetry all at once. By publishing the messy specifics, including the compatibility gaps and the fallback paths, the company is offering a fairly honest map of what it actually takes to modernize real-time video at this scale. For an industry that increasingly runs on live calls and video-first communication, the lesson is that the next leap in quality comes not from a single breakthrough but from grinding through thousands of edge cases until the experience finally feels effortless.