Merge 9f12f4e into 576fb1a

moviepy/video/VideoClip.py

@@ -209,6 +209,7 @@ def write_videofile(
         audio_codec=None,
         audio_bitrate=None,
         audio_bufsize=2000,
+        audio_ffmpeg_params=None,
         temp_audiofile=None,
         temp_audiofile_path="",
         remove_temp=True,
@@ -286,6 +287,11 @@ def write_videofile(
           Note that it mainly an indicative goal, the bitrate won't
           necessarily be the this in the final file.
 
+        audio_ffmpeg_params
+          Any additional ffmpeg audio parameters you would like to specify
+          as a list of terms, like ['-af', 'acrusher=.1:1:64:0:log',
+           '-option2' 'value2' ]
+
         preset
           Sets the time that FFMPEG will spend optimizing the compression.
           Choices are: ultrafast, superfast, veryfast, faster, fast, medium,
@@ -372,6 +378,7 @@ def write_videofile(
                 audio_nbytes,
                 audio_bufsize,
                 audio_codec,
+                ffmpeg_params=audio_ffmpeg_params,
                 bitrate=audio_bitrate,
                 write_logfile=write_logfile,
                 logger=logger,

tests/test_PR.py

@@ -132,3 +132,15 @@ def make_textclip(txt):
 
 if __name__ == "__main__":
     pytest.main()
+
+
+def test_PR_1493_audio_params():
+    """Test support for additional audio parameters for VideoClip."""
+    with VideoFileClip("media/chaplin.mp4") as clip:
+        with pytest.raises(IOError) as e:
+            clip.write_videofile(
+                "my_new_video.mp4",
+                audio_ffmpeg_params=["nonexistentparam", "acrusher=.1:1:64:0:log"],
+            )
+
+        assert "Invalid argument" in str(e.value)