diff --git a/mkvchapters.sh b/mkvchapters.sh
new file mode 100755
index 0000000..d02134b
--- /dev/null
+++ b/mkvchapters.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+# needs: mkvtoolnix (for mkvmerge)
+# chapters.txt:
+# CHAPTER1=00:01:02.00
+# CHAPTER1NAME=chapter 1
+# ...
+# CHAPTER23=01:02:03.00
+# CHAPTER23NAME=chapter 23
+
+mkvmerge --chapters chapters.txt -o ${1}_chapters.mkv $1
diff --git a/mp4chapters.sh b/mp4chapters.sh
new file mode 100755
index 0000000..519aa52
--- /dev/null
+++ b/mp4chapters.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+# needs: MP4Box
+
+MP4Box -chap chapters.txt -out ${1}_chapters.mp4 $1