Convert AV1 to MP4 (H.264) via API

AV1 content needs transcoding to H.264 for compatibility with older devices and platforms. Convert AV1 to widely supported H.264 MP4 format.

Try it in your browser

Loading FFmpeg engine... (~31 MB)

Use the API

curl -X POST https://renderio.dev/v1/commands \
  -H "X-API-KEY: ffsk_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
  "ffmpeg_command": "-i {in_video} -c:v libx264 -crf 23 -c:a aac -movflags +faststart {out_video}",
  "input_files": {
    "in_video": "https://example.com/input.mkv"
  },
  "output_files": {
    "out_video": "output.mp4"
  }
}'

Need an API key? Get your free API key to start processing files programmatically.

Common Variations

High quality output

-i input.mkv -c:v libx264 -crf 18 -preset slow -c:a aac -b:a 192k output.mp4

From WebM AV1 source

-i input.webm -c:v libx264 -crf 23 -c:a aac -movflags +faststart output.mp4

H.265 output instead

-i input.mkv -c:v libx265 -crf 28 -c:a aac -movflags +faststart output.mp4

Related Operations

Convert MP4 to AV1 via API | RenderIO Convert H.265 to H.264 via API | RenderIO Convert VP9 to MP4 (H.264) via API | RenderIO Convert MKV to MP4 via API | RenderIO

Need to process at scale?

Automate this with the RenderIO FFmpeg API. Process thousands of files programmatically or through no-code video automation.

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