Files
ImageApi/src/video.rs
Cameron Cordes 1c7e54d355 Make playlist generation async
This should allow other requests to be answered while we wait for ffmpeg
to do its thing.
2021-02-27 11:53:29 -05:00

96 lines
2.5 KiB
Rust

use std::io::Result;
use std::path::Path;
use std::process::{Child, Command, ExitStatus, Stdio};
use actix::prelude::*;
use log::{debug, trace};
// ffmpeg -i test.mp4 -c:v h264 -flags +cgop -g 30 -hls_time 3 out.m3u8
// ffmpeg -i "filename.mp4" -preset veryfast -c:v libx264 -f hls -hls_list_size 100 -hls_time 2 -crf 24 -vf scale=1080:-2,setsar=1:1 attempt/vid_out.m3u8
pub struct StreamActor;
impl Actor for StreamActor {
type Context = Context<Self>;
}
pub struct ProcessMessage(pub String, pub Child);
impl Message for ProcessMessage {
type Result = Result<ExitStatus>;
}
impl Handler<ProcessMessage> for StreamActor {
type Result = Result<ExitStatus>;
fn handle(&mut self, msg: ProcessMessage, _ctx: &mut Self::Context) -> Self::Result {
trace!("Message received");
let mut process = msg.1;
let result = process.wait();
debug!(
"Finished waiting for: {:?}. Code: {:?}",
msg.0,
result
.as_ref()
.map_or(-1, |status| status.code().unwrap_or(-1))
);
result
}
}
pub async fn create_playlist(video_path: &str, playlist_file: &str) -> Result<Child> {
if Path::new(playlist_file).exists() {
debug!("Playlist already exists: {}", playlist_file);
return Err(std::io::Error::from(std::io::ErrorKind::AlreadyExists));
}
let result = Command::new("ffmpeg")
.arg("-i")
.arg(video_path)
.arg("-c:v")
.arg("h264")
.arg("-crf")
.arg("21")
.arg("-preset")
.arg("veryfast")
.arg("-hls_time")
.arg("3")
.arg("-hls_list_size")
.arg("100")
.arg("-vf")
.arg("scale=1080:-2,setsar=1:1")
.arg(playlist_file)
.stdout(Stdio::null())
.stderr(Stdio::null())
.spawn();
let start_time = std::time::Instant::now();
loop {
actix::clock::delay_for(std::time::Duration::from_secs(1)).await;
if Path::new(playlist_file).exists()
|| std::time::Instant::now() - start_time > std::time::Duration::from_secs(5)
{
break;
}
}
result
}
pub fn generate_video_thumbnail(path: &Path, destination: &Path) {
Command::new("ffmpeg")
.arg("-ss")
.arg("3")
.arg("-i")
.arg(path.to_str().unwrap())
.arg("-vframes")
.arg("1")
.arg("-f")
.arg("image2")
.arg(destination)
.output()
.expect("Failure to create video frame");
}