CLI Entry Application (src/main.rs)

The entry point uses clap to parse command line arguments and dispatch execution to either the Encoder or Decoder.

Structure

#[derive(Subcommand)]
enum Commands {
    Encode { ... },
    Decode { ... },
}

User Experience

We use indicatif to ensure the user always knows what's happening.

• Progress Bars: Show MB/s and ETA.
• Feedback: Clear "Success" or "Hash Mismatch" messages.

Error Handling

We use anyhow to propagate errors up to main(). If something fails (e.g., FFmpeg crashes, disk full), the user gets a pretty error message instead of a panic.