gstreamer-rs/examples/src/bin/launch.rs

extern crate gstreamer as gst;
use gst::*;

use std::u64;
use std::env;

fn main() {
    let pipeline_str = env::args().collect::<Vec<String>>()[1..].join(" ");

    gst::init().unwrap();

    let pipeline = gst::parse_launch(&pipeline_str).unwrap();
    let bus = pipeline.get_bus().unwrap();

    let ret = pipeline.set_state(gst::State::Playing);
    assert_ne!(ret, gst::StateChangeReturn::Failure);

    loop {
        let msg = match bus.timed_pop(u64::MAX) {
            None => break,
            Some(msg) => msg,
        };

        match msg.view() {
            MessageView::Eos => break,
            MessageView::Error(err) => {
                println!(
                    "Error from {}: {} ({:?})",
                    msg.get_src().get_path_string(),
                    err.get_error(),
                    err.get_debug()
                );
                break;
            }
            _ => (),
        }
    }

    let ret = pipeline.set_state(gst::State::Null);
    assert_ne!(ret, gst::StateChangeReturn::Failure);
}