[ci skip] Add convert utility script

.coveragerc

@@ -13,6 +13,7 @@ omit =
     teleop/teleop_client.py
     # Needs an input video
     train/split_video.py
+    train/convert_video.py
 
 [report]
 exclude_lines =

README.md

@@ -132,7 +132,7 @@ python -m train.test -f path/to/dataset/folder -w cnn_model_tmp.pth
 #### Recommended : Use an image with everything already installed
 
 0. You need a 16GB micro sd card (warning, all data on that card will be overwritten)
-WARNING: for a smaller sd card, you need to resize the image before writing it (this [link](https://github.com/billw2/rpi-clone) may help)
+WARNING: for a smaller sd card, you need to resize the image before writing it (this [link](https://softwarebakery.com/shrinking-images-on-linux) and [repo](https://github.com/billw2/rpi-clone) may help)
 
 1. Download the image [here](https://drive.google.com/open?id=1CUmSKOQ7i_XTrsLCRntypK9KcVaVwM4h)
 

train/convert_video.py

@@ -0,0 +1,11 @@
+"""
+Convert h264 videos (in the current folder) to mp4 using MP4Box
+"""
+import os
+import subprocess
+
+files = [f for f in os.listdir(".") if f.endswith(".h264")]
+
+for f in files:
+	print("Converting {}".format(f))
+	ok = subprocess.call(['MP4Box', '-add', f, f[:-4] + "mp4"])