diff --git a/Cargo.lock b/Cargo.lock
index 3e345a3..b8c2982 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -965,6 +965,12 @@ dependencies = [
  "litrs",
 ]
 
+[[package]]
+name = "dotenv"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
+
 [[package]]
 name = "downcast-rs"
 version = "1.2.0"
@@ -2892,6 +2898,7 @@ dependencies = [
  "anyhow",
  "crossbeam",
  "crossbeam-channel",
+ "dotenv",
  "eframe",
  "egui",
  "indicatif",
diff --git a/Cargo.toml b/Cargo.toml
index 07fc41b..49dabc1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,7 @@ crate-type = ["rlib", "cdylib"]
 anyhow = "1.0.77"
 crossbeam = "0.8.4"
 crossbeam-channel = "0.5.11"
+dotenv = "0.15.0"
 eframe = "0.26.2"
 egui = "0.26.2"
 indicatif = "0.17.7"
diff --git a/examples/live.rs b/examples/live.rs
index b936e10..a0d6701 100644
--- a/examples/live.rs
+++ b/examples/live.rs
@@ -1,4 +1,4 @@
-use indicatif::ProgressBar;
+use dotenv::dotenv;
 use std::fs::File;
 use std::io::Write;
 use thermaldecoder::{Frame, Header, HDR_SIZE};
@@ -37,11 +37,27 @@ use thermaldecoder::{Frame, Header, HDR_SIZE};
 // }
 
 fn main() -> anyhow::Result<()> {
+    dotenv().ok();
+    let device = match std::env::var("THERMALCAM_IFACE=enp1s0f0") {
+        Ok(d) => {
+            let device = pcap::Device::list()
+                .expect("device list failed")
+                .into_iter()
+                .find(|x| x.name == d)
+                .expect(&format!("could not find device {}", d));
+            device
+        }
+        Err(_) => pcap::Device::lookup()
+            .expect("device lookup failed")
+            .expect("no device available"),
+    };
     // get the default Device
-    let device = pcap::Device::lookup()
-        .expect("device lookup failed")
-        .expect("no device available");
+
     println!("Using device {}", device.name);
+    let output = std::env::args()
+        .nth(1)
+        .expect("required output file argument");
+    println!("Using output {}", output);
 
     // Setup Capture
     let mut cap = pcap::Capture::from_device(device)
@@ -52,8 +68,7 @@ fn main() -> anyhow::Result<()> {
 
     // get a packet and print its bytes
     let mut parts = vec![];
-    let pb = ProgressBar::new(1024);
-    let mut out = File::create("output.raw")?;
+    let mut out = File::create(&output)?;
     while let Ok(p) = cap.next_packet() {
         let data = p.data;
         if data.len() != 6972 {
@@ -72,7 +87,6 @@ fn main() -> anyhow::Result<()> {
             };
             if frame.raw.len() == 384 * 288 * 2 {
                 out.write_all(&frame.raw)?;
-                pb.inc(1);
             }
             parts.clear();
         }
diff --git a/replay.py b/replay.py
index a45f57e..995d4c4 100755
--- a/replay.py
+++ b/replay.py
@@ -4,6 +4,10 @@
  
 import base64
 from scapy.all import *
+from dotenv import load_dotenv
+import os
+
+load_dotenv()
  
 # Base64 encoded packet data 
 encoded_packet = "////////AAFsWfAKCABFAAA4KB0AAIARkEfAqAABwKgA/x+bH5wA2QAAASABgBtAACAAAAAAAAAADwAAAAEAAAEAACArAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAP//////////////////////////////////////////AAAAAAAAAAIBAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
@@ -16,5 +20,8 @@ decoded_packet = base64.b64decode(encoded_packet)
 packet = Ether(decoded_packet)
 #print(packet.show(dump=True))
  
+iface = os.environ.get('THERMALCAM_IFACE', 'enp1s0f0')
+print(f'using interface {iface}')
+
 # (packet)
-sendp(packet, iface="enp1s0f0")
\ No newline at end of file
+sendp(packet, iface=iface)
diff --git a/run_live.sh b/run_live.sh
index 5974e66..495575d 100755
--- a/run_live.sh
+++ b/run_live.sh
@@ -1,3 +1,14 @@
 #!/bin/bash
 cd $(dirname $0)
-sudo ./venv/bin/python ./decode.py --live
+
+set -e
+
+# Python works but stutters
+#sudo ./venv/bin/python ./decode.py --live
+cargo build --release --example live
+sudo ./target/release/examples/live /dev/stdout | gst-launch-1.0 filesrc location=/dev/stdin \
+ ! rawvideoparse use_sink_caps=false height=384 width=288 format=gray16-le \
+ ! videoconvertscale \
+ ! v4l2sink device=/dev/video0
+#	! videoconvertscale
+