Function input 

pub fn input<P: AsRef<Path> + ?Sized>(path: &P) -> Result<Input, Error>

Opens a media file for reading (demuxing).

This is the primary function for opening input files. It automatically detects the container format and probes all streams to gather codec information.

Parameters

• path - Path to the media file (supports various protocols: file://, http://, rtsp://, etc.)

Returns

An context::Input that can be used to access streams and read packets.

Errors

• File not found or inaccessible
• Unsupported or corrupted format
• Permission denied

Example

let mut input = ffmpeg::format::input(&"video.mp4")?;

// Find the best video stream
let stream = input.streams().best(Type::Video).ok_or(Error::StreamNotFound)?;
let stream_index = stream.index();

// Create decoder for this stream
let decoder = stream.codec().decoder().video()?;