diff --git a/backend/encoding.toml b/backend/encoding.toml
index 7314700..c0ca89a 100644
--- a/backend/encoding.toml
+++ b/backend/encoding.toml
@@ -1,14 +1,14 @@
-processes = 2
+processes = 6
 
 [[encoders]]
 name = "H264 Full VBR35"
-cmd = "ffmpeg -i {{INPUT}} -nostdin -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}}"
+cmd = "ffmpeg -i {{INPUT}} -nostdin -c:v h264_nvenc -cq:v 35 -rc:v vbr -c:a libmp3lame -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 {{INPUT}} -nostdin -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]]
+#name = "AV1 Full CRF38"
+#cmd = "ffmpeg -i {{INPUT}} -nostdin -c:v libsvtav1 -crf 38 -c:a libmp3lame -pix_fmt yuv420p -color_primaries 1 -color_trc 1 -colorspace 1 -movflags +faststart {{OUTPUT}}"
+#suffix = "av1-crf38.mp4"
 
 #[[encoders]]
 #name = "x264 Full CRF32"
diff --git a/backend/src/generator.rs b/backend/src/generator.rs
index b405a99..492bd1b 100644
--- a/backend/src/generator.rs
+++ b/backend/src/generator.rs
@@ -10,6 +10,7 @@ use std::io::{BufReader};
 use xdg_mime::{SharedMimeInfo};
 use anyhow::{Context, Result};
 use rayon::prelude::*;
+use rayon::ThreadPoolBuilder;
 use serde::{de, ser};
 use walkdir::{WalkDir, DirEntry};
 use crate::encoder::Encoders;
@@ -103,6 +104,10 @@ impl Generator {
 
     /// Process a directory
     pub fn encode_dir(&self, dir: &PathBuf) -> Result<()> {
+        // Set number of threads
+        ThreadPoolBuilder::new().num_threads(self.encoders.processes).build_global()?;
+        info!("Activating {} threads", self.encoders.processes);
+
         // Found file
         let videos: Vec<PathBuf> = self.list_video_files(dir).collect();
         info!("Found {} videos", videos.len());