Resize Video for TikTok via API

Automatically resize and format videos for TikTok's 9:16 vertical format at 1080x1920. Process thousands of videos for multi-account publishing workflows.

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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} -vf \"scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:-1:-1:color=black\" -c:v libx264 -crf 23 -c:a aac {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

Center crop to fill (no bars)

-i input.mp4 -vf "scale=1080:1920:force_original_aspect_ratio=increase,crop=1080:1920" -c:v libx264 -crf 23 -c:a aac output.mp4

Blurred background fill

-i input.mp4 -filter_complex "[0]scale=1080:1920:force_original_aspect_ratio=increase,crop=1080:1920,boxblur=20[bg];[0]scale=1080:1920:force_original_aspect_ratio=decrease[fg];[bg][fg]overlay=(W-w)/2:(H-h)/2" -c:v libx264 -crf 23 -c:a aac output.mp4

With max duration limit (10 min)

-i input.mp4 -t 600 -vf "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:-1:-1:color=black" -c:v libx264 -crf 23 -c:a aac output.mp4

High quality for ads

-i input.mp4 -vf "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:-1:-1:color=black" -c:v libx264 -crf 18 -preset slow -c:a aac -b:a 192k output.mp4

Platform Specs

Width

1080px

Height

1920px

Aspect Ratio

9:16

Max Duration

10min

Related Operations

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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