WebM is the open-source container designed for web video. AV1-in-WebM is supported natively by Chrome, Firefox, Edge, and Opera — without plugins or licenses. Converting your MP4 to WebM with AV1 gives you the best compression ratio available in a browser-native format.
Convert MP4 to WebM (AV1) for web streaming — royalty-free, smaller files, native browser support.
You’ve tried our free online encoder — but if you need larger files, bulk jobs, or enterprise-grade throughput, Convertrilo has you covered. GPU-powered encoding, predictable pricing, and instant scaling when you need it most.
Upload your MP4 file using the tool above, make sure the output codec is set to AV1 and the container to WEBM, then click Convert. No software installation required — encoding runs on our GPU servers.
Yes. No sign-up is required for the free tool. You get up to 720p output and files up to 200 MB. Create a free account to unlock 1080p, larger files, and 1,000 free encoding minutes.
Encoding speed depends on file length and selected resolution. Most short clips (under 5 minutes) finish in under 60 seconds on our GPU infrastructure.
AV1 is a modern video codec with significantly better compression than H.264 and H.265, reducing file size by 30–50% at the same quality. Converting to WebM (AV1) is ideal for web streaming, archiving, and platforms like YouTube that support AV1 delivery.
Yes. By default the tool re-encodes audio to AAC at 192 kbps for MP4/MKV/MOV, or Opus at 128 kbps for WebM. You can also choose to copy the original audio stream unchanged or strip it entirely using the Audio selector.