diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f9606a3
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/venv
diff --git a/decode.py b/decode.py
index 96a1cc1..e92b564 100644
--- a/decode.py
+++ b/decode.py
@@ -99,5 +99,5 @@ assert list(equations)[0] == 'T=(-1.665884e-08)*X^4+(1.347094e-05)*X^3+(-4.39626
 assert df.shape[0] == 6372
 
 # produce a video
-system('ffmpeg -f image2 -framerate 25 -i %04d.png -s 288x384 thermal.avi')
-print('to play: ffplay thermal.avi')
+system('ffmpeg -f image2 -framerate 25 -i %04d.png -s 288x384 thermal.mp4')
+print('to play: ffplay thermal.mp4')
diff --git a/in.pcap b/in.pcap
new file mode 100644
index 0000000..92df16a
Binary files /dev/null and b/in.pcap differ
diff --git a/thermal.avi b/thermal.avi
new file mode 100644
index 0000000..9b94bad
Binary files /dev/null and b/thermal.avi differ
diff --git a/thermal.mp4 b/thermal.mp4
new file mode 100644
index 0000000..4867cfe
Binary files /dev/null and b/thermal.mp4 differ