How to Convert AV1 Video to H.264

Before you start

You need a source file recorded or encoded with AV1, enough free storage for the H.264 output, and a local converter or editing tool that includes an H.264 encoder. A web-based AV1 to H.264 converter is an option, but it means uploading the file to a service. A local tool keeps the original recording on your machine and gives you more control over bitrate and frame rate. Confirm whether the capture source, such as a webcam, already has an option to record directly in H.264; if it does, recording again in the required format may be simpler than converting an existing file.

Step-by-step instructions

Open the video in a local converter that supports AV1 input and H.264 output. Many desktop encoding tools include both codecs. Add the source file and choose an output preset or format field that names H.264 or AVC. Keep the original file untouched until the conversion and output check are complete.

Set the output properties to match the source where possible. Match the frame rate to the original unless you have a specific reason to change it. Keep the resolution unchanged to avoid unnecessary scaling. For bitrate, choose a value that fits the destination: H.264 often needs a higher bitrate than AV1 to retain similar quality, especially for high-detail or fast-moving footage. If the tool exposes encoding settings, select a slower or higher-quality profile when quality matters more than speed.

Choose the audio settings separately if the tool separates video encoding from audio. Copy or convert the audio to a widely supported format such as AAC. If the destination is a web or social media recording format, MP4 with H.264 video and AAC audio is usually the safest combination. Start the conversion and wait for the process to finish instead of opening the partially written output file.

Check the output

Open the converted file in a media player and play sections that include camera movement, speech and any on-screen text. Check that picture and sound remain synchronized, that movement is smooth at the expected frame rate, and that the recording starts and ends at the correct points. If the converter reports the output properties, confirm that the video codec is H.264, the container is the chosen recording format, and the audio track is present.

A converted file can look softer or show more compression artifacts because AV1 and H.264 use different encoding methods. If important details look blocky or blurred, compare the same short section with the original before disabling or deleting anything. Quality changes depend on the source, bitrate and encoding settings rather than on the converter name alone.

Common problems and next steps

If the output is much larger than the source, raise the H.264 bitrate limit only when quality is the priority. To reduce file size, lower the bitrate or use a different encoding profile, and check a short clip before converting the whole recording. If the file will not open on the target device, try a different H.264 profile or switch the container to MP4.

If the converter cannot open the AV1 file, verify the file extension, container and decoder support in the tool. Some tools accept AV1 in one container but not another. When the target platform accepts AV1, consider whether conversion is necessary at all; converting only avoids compatibility problems when the destination actually requires H.264.