diff --git a/README.md b/README.md
index 2bec09d..1d6b285 100644
--- a/README.md
+++ b/README.md
@@ -145,7 +145,7 @@ Edit specs are Javascript / JSON objects describing the whole edit operation wit
 | `fast` | `--fast`, `-f` | Fast mode (low resolution and FPS, useful for getting a quick preview) | `false` | |
 | `defaults.layer.fontPath` | `--font-path` | Set default font to a .ttf | System font | |
 | `defaults.layer.*` | | Set any layer parameter that all layers will inherit | | |
-| `defaults.duration` | | Set default clip duration for clips that don't have an own duration | `4` | sec |
+| `defaults.duration` | `--clip-duration` | Set default clip duration for clips that don't have an own duration | `4` | sec |
 | `defaults.transition` | | An object `{ name, duration }` describing the default transition. Set to **null** to disable transitions | | |
 | `defaults.transition.duration` | `--transition-duration` | Default transition duration | `0.5` | sec |
 | `defaults.transition.name` | `--transition-name` | Default transition type. See **Transition types** | `random` | |
diff --git a/cli.js b/cli.js
index 673201c..0a9134d 100644
--- a/cli.js
+++ b/cli.js
@@ -26,6 +26,7 @@ const cli = meow(`
     --json  Use JSON edit spec
     --transition-name  Name of default transition to use (default: random)
     --transition-duration  Default transition duration
+    --clip-duration  Default clip duration
     --width  Width which all media will be converted to
     --height  Height which all media will be converted to
     --fps  FPS which all videos will be converted to
@@ -46,6 +47,7 @@ const cli = meow(`
     verbose: { type: 'boolean', alias: 'v' },
     fast: { type: 'boolean', alias: 'f' },
     transitionDuration: { type: 'number' },
+    clipDuration: { type: 'number' },
     width: { type: 'number' },
     height: { type: 'number' },
     fps: { type: 'number' },
@@ -90,7 +92,7 @@ const cli = meow(`
     params.clips = clips.map((clip) => ({ layers: [clip] }));
   }
 
-  const { verbose, transitionName, transitionDuration, width, height, fps, audioFilePath, fontPath, fast, out: outPath } = cli.flags;
+  const { verbose, transitionName, transitionDuration, clipDuration, width, height, fps, audioFilePath, fontPath, fast, out: outPath } = cli.flags;
 
   if (transitionName || transitionDuration != null) {
     params.defaults.transition = {};
@@ -98,6 +100,8 @@ const cli = meow(`
     if (transitionDuration) params.defaults.transition.duration = transitionDuration;
   }
 
+  if (clipDuration) params.defaults.duration = clipDuration;
+
   if (fontPath) {
     params.defaults.layer = {
       fontPath,