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Fade Video Online (Free, No Upload)
Add fade-in and fade-out effects to any video right in your browser. Nothing gets uploaded to a server. Smooth transitions at the start and end of your video make it look more polished. The processing runs locally using FFmpeg compiled for your browser.
Try it in your browser
Loading FFmpeg engine... (~31 MB)
Use the API
curl -X POST https://renderio.dev/api/v1/run-ffmpeg-command \
-H "X-API-KEY: ffsk_your_api_key" \
-H "Content-Type: application/json" \
-d '{
"ffmpeg_command": "-i {in_video} -vf \"fade=t=in:st=0:d=1,fade=t=out:st=9:d=1\" -af \"afade=t=in:st=0:d=1,afade=t=out:st=9:d=1\" {out_video}",
"input_files": {
"in_video": "https://example.com/input.mp4"
},
"output_files": {
"out_video": "output.mp4"
}
}'Need an API key? Get your free API key to start processing files programmatically.
Common Variations
Fade in only (2 seconds)
-i input.mp4 -vf "fade=t=in:st=0:d=2" -af "afade=t=in:st=0:d=2" output.mp4Fade out only (last 3 seconds)
-i input.mp4 -vf "fade=t=out:st=7:d=3" -af "afade=t=out:st=7:d=3" output.mp4Fade to white instead of black
-i input.mp4 -vf "fade=t=out:st=9:d=1:color=white" output.mp4Related Operations
Need to process at scale?
Automate this with the RenderIO FFmpeg API. Process thousands of files programmatically or through no-code video automation.