Does Twitch Support AV1? Choosing a Streaming Codec
Learn whether Twitch supports AV1 streaming, what to use instead, and how codec choice affects your camera, encoder, and viewer experience.
Does Twitch support AV1?
Twitch does not currently offer AV1 ingest for standard streamers. The platform's published broadcasting requirements list H.264 as the supported video codec for sending a stream from your encoder or broadcasting software. Support information can change, so check Twitch's current help documentation before committing to a new encoder or workflow. For now, do not expect to select AV1 in OBS Studio and have Twitch accept that stream.
Why codec support matters for streaming
A video codec is the method your streaming software uses to compress camera video and audio into a signal that can travel to a platform. H.264 and AV1 are two different compression standards. AV1 can often deliver similar picture quality at a lower bitrate, which is useful when uploading video to a file-based service or when a platform explicitly accepts AV1 input. Streaming is different: the platform must decode and process the incoming format in real time, so the ingest codec has to match what the service supports.
Twitch expects H.264 video with AAC audio in an RTMP-based workflow, or through a supported broadcasting tool that handles that format behind the scenes. Your camera may record or send other formats locally, but the stream signal that reaches Twitch still needs to meet the platform's ingest requirements.
What this means for your streaming setup
If you are evaluating AV1 for a Twitch stream, the practical decision is to keep the encoder set to H.264. In OBS Studio, use the x264 software encoder when you want broad compatibility, or choose a hardware H.264 encoder from your GPU if it is available. This applies even if your camera itself can output or record AV1: the final stream sent to Twitch should use the codec Twitch accepts.
For other destinations, AV1 may be relevant. Some video platforms or upload workflows have separate AV1 support, and some recording tools can save local AV1 files for later editing or delivery. Check the requirements of each destination separately instead of assuming that AV1 support in one place means the same support everywhere.
Limits and related questions
The main constraint is compatibility. Even when an encoder offers AV1, choosing it for a Twitch stream can cause the connection to fail or the platform to reject the stream. Encoding AV1 also tends to require more processing power than H.264, which may reduce the resources available for your camera, overlays, or other applications during a live broadcast.
Viewers may also be affected by the format delivered by Twitch, but that is separate from the format you send. Ingest support and playback support are not the same setting. A streamer should verify the ingest codec in their broadcasting software, while the platform manages what viewers receive.