diff --git a/backend/encoding.toml b/backend/encoding.toml
index eb0a445..02ee85b 100644
--- a/backend/encoding.toml
+++ b/backend/encoding.toml
@@ -2,12 +2,12 @@ processes = 2
 
 [[encoders]]
 name = "H264 Full VBR35"
-cmd = "ffmpeg -i %i -c:v h264_nvenc -cq:v 35 -rc:v vbr -c:a aac -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart %o"
+cmd = "ffmpeg -i {{INPUT}} -c:v h264_nvenc -cq:v 35 -rc:v vbr -c:a aac -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart {{OUTPUT}}"
 suffix = "h264-vbr35.mp4"
 
 [[encoders]]
 name = "AV1 Full CRF38"
-cmd = "ffmpeg -i %i -c:v libsvtav1 -crf 38 -c:a aac -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart %o"
+cmd = "ffmpeg -i {{INPUT}} -c:v libsvtav1 -crf 38 -c:a aac -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart {{OUTPUT}}"
 suffix = "av1-crf38.mp4"
 
 #[[encoders]]
diff --git a/backend/src/encoder.rs b/backend/src/encoder.rs
index 5a21415..bffb45f 100644
--- a/backend/src/encoder.rs
+++ b/backend/src/encoder.rs
@@ -1,6 +1,9 @@
 use std::{env, fs};
+use std::path::Path;
+use std::process::{Command, Output};
 use serde::{Deserialize};
-use anyhow::{Result};
+use anyhow::{Context, Result};
+use crate::utils::run_cmd;
 
 #[derive(Deserialize, Debug)]
 pub struct Encoder {
@@ -15,6 +18,14 @@ pub struct Encoders {
     encoders: Vec<Encoder>
 }
 
+impl Encoder {
+    pub fn execute(&self, orig: &str, out: &str) -> Result<Output> {
+        run_cmd(&*self.cmd
+            .replace("{{INPUT}}", &*shlex::quote(orig))
+            .replace("{{OUTPUT}}", &*shlex::quote(out)))
+    }
+}
+
 impl Encoders {
     pub fn load() -> Result<Encoders> {
         let file = env::var("MEOW_ENCODING_FILE").unwrap_or("encoding.toml".to_string());