ffmpeg-video-filter

You can apply ffmpeg video filters by using built-in presets like scale-720p or watermark, or by supplying a custom filter chain to resize, crop, pad, and overlay watermarks on your video streams.

Yes, you can stack multiple video clips horizontally or vertically using the hstack and vstack presets, which automate multi-input workflows through ffmpeg's filter_complex functionality.

Yes, you need ffmpeg installed and accessible on your system PATH to run any video filtering presets like deinterlace, 2x-speed, or custom -vf chains for color correction.

The best way to deinterlace and color correct video streams is by using automated ffmpeg filter presets that validate inputs and apply the correct -vf or filter_complex chains in a single command.

Yes, you can supply a custom -vf chain to transform your video, allowing you to bypass built-in presets like scale-1080p-letterbox and apply specialized ffmpeg video filters directly.

Multi-input ffmpeg video filter commands fail if inputs are not properly validated or if ffmpeg is not on your PATH, as the filtering process requires strict input validation for hstack and vstack workflows.