Fix slow transcoder (use mediainfo id instead of sha1)

transcoder/Cargo.lock

@@ -1112,17 +1112,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "sha-1"
-version = "0.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f5058ada175748e33390e40e872bd0fe59a19f265d0158daa551c5a88a76009c"
-dependencies = [
- "cfg-if",
- "cpufeatures",
- "digest",
-]
-
 [[package]]
 name = "sha1"
 version = "0.10.5"
@@ -1317,7 +1306,6 @@ dependencies = [
  "rand",
  "reqwest",
  "serde",
- "sha-1",
  "tokio",
  "utoipa",
 ]

transcoder/Cargo.toml

@@ -13,4 +13,3 @@ derive_more = "0.99.17"
 reqwest = { version = "0.11.16", default_features = false, features = ["json", "rustls-tls"] }
 utoipa = { version = "3", features = ["actix_extras"] }
 json = "0.12.4"
-sha-1 = "0.10.1"

transcoder/src/identify.rs

@@ -1,6 +1,5 @@
 use json::JsonValue;
 use serde::Serialize;
-use sha1::{Digest, Sha1};
 use std::{
 	collections::HashMap,
 	fs, io,
@@ -103,6 +102,7 @@ pub struct Chapter {
 }
 
 async fn extract(path: String, sha: &String, subs: &Vec<Subtitle>) {
+	println!("Extract subs and fonts for {}", path);
 	let mut cmd = Command::new("ffmpeg");
 	cmd.current_dir(format!("/metadata/{sha}/att/"))
 		.args(&["-dump_attachment:t", ""])
@@ -141,16 +141,13 @@ pub async fn identify(path: String) -> Result<MediaInfo, std::io::Error> {
 	assert!(mediainfo.status.success());
 	let output = json::parse(str::from_utf8(mediainfo.stdout.as_slice()).unwrap()).unwrap();
 
-	let mut file = fs::File::open(&path)?;
-	let mut hasher = Sha1::new();
-	io::copy(&mut file, &mut hasher)?;
-	let sha = format!("{:x}", hasher.finalize());
-
 	let general = output["media"]["track"]
 		.members()
 		.find(|x| x["@type"] == "General")
 		.unwrap();
 
+	let sha = general["UniqueID"].to_string();
+
 	let subs: Vec<Subtitle> = output["media"]["track"]
 		.members()
 		.filter(|x| x["@type"] == "Text")