github.com/iawia002/lux

Lux is primarily designed as a command-line video downloader rather than a library for programmatic use. While you can import it as a Go package, the API surface is sparse and clearly optimized for CLI usage. The core extraction logic lives in site-specific extractors, but there's minimal documentation on how to use these programmatically. You'll spend time reading the CLI command implementation to understand how to wire things together.

Error handling is inconsistent - some extractors return errors properly while others panic or print to stdout/stderr directly, making it difficult to build robust applications around. There are no exported interfaces or clear extension points if you need custom behavior. Type definitions exist but lack meaningful documentation comments, so IDE tooltips won't help much. The codebase is structured around CLI flags and commands, not library consumers.

If you need to embed video downloading in a Go application, expect to write significant wrapper code. It works reliably for the CLI use case, but treating it as a reusable library requires navigating undocumented patterns and working around CLI-centric assumptions.

Lux is primarily designed as a CLI tool for downloading videos from various platforms, with a Go API that's somewhat exposed for library usage. In production scenarios, you'll quickly hit limitations around resource management and observability. The library performs blocking I/O operations without built-in timeout controls or context support in most critical paths, making it difficult to implement proper cancellation or deadline propagation.

Error handling is inconsistent—some failures return errors while others panic or write directly to stdout/stderr, which is problematic when embedding in services. There's no connection pooling configuration for HTTP clients, and you can't easily inject your own transport for custom retry logic or circuit breaking. The extractor implementations vary widely in quality and error verbosity, making debugging production issues challenging without diving into source code.

For simple batch processing or worker tasks where you can afford process-level isolation and restarts, it works adequately. However, the lack of structured logging hooks, metrics integration points, and memory usage controls (particularly during concurrent downloads) means you'll need significant wrapper code to make this production-ready in a high-throughput environment.

Lux is a video downloader library that works across many platforms, but using it in production requires careful security consideration. The library makes extensive network calls to third-party services with minimal configuration of TLS settings or certificate pinning. Error messages frequently expose full URLs and request details, which can leak sensitive tokens or cookies if not carefully handled in your logging.

Input validation is a major concern - the library accepts arbitrary URLs and executes network requests without robust sanitization. There's no built-in rate limiting or timeout configuration that's obvious from the API. The extraction logic relies on parsing HTML/JavaScript from external sites, which means breaking changes happen frequently as sites update their code. Authentication handling for sites requiring login passes credentials through without clear documentation of how they're stored or transmitted.

Dependency management is problematic with a large transitive dependency tree that includes older versions of HTTP and networking libraries. CVE response has been slow historically, and the project doesn't follow semantic versioning strictly. If you must use this, isolate it behind strict input validation, run it in a sandboxed environment, and implement comprehensive error handling that strips sensitive data before logging.