Widthisteğe bağlı
Target width in pixels. If only width is provided, height is auto-calculated to preserve aspect ratio. At least one of width or height must be provided.
Heightisteğe bağlı
Target height in pixels. If only height is provided, width is auto-calculated to preserve aspect ratio. At least one of width or height must be provided.
Modeisteğe bağlı
Scaling mode. 'stretch' scales the video to the exact target dimensions (may distort aspect ratio). 'pad' scales to fit within the target dimensions while preserving aspect ratio, then pads with the chosen color to fill the remaining space (letterbox/pillarbox). 'crop' scales to cover the target dimensions while preserving aspect ratio, then center-crops to the exact target size.
Pad Coloristeğe bağlı
Padding color when mode is 'pad'. Ignored for other modes.
Codecisteğe bağlı
Video codec to use for encoding. libx264 (H.264) is widely compatible, libx265 (H.265/HEVC) offers better compression.
Presetisteğe bağlı
Encoding speed preset. Slower presets give better compression but take longer.
Crfisteğe bağlı
Constant Rate Factor for quality (0-51). Lower values mean better quality and larger files. 18 is visually lossless for most content.
