add add audio to video tutorial

x4nth055 · x4nth055 · commit 8674489bec17 · 2021-12-19T12:00:50.000+01:00
diff --git a/README.md b/README.md
@@ -182,6 +182,6 @@ This is a repository of all the tutorials of [The Python Code](https://www.thepy
     - [How to Reverse Videos in Python](https://www.thepythoncode.com/article/reverse-video-in-python). ([code](python-for-multimedia/reverse-video))
     - [How to Extract Video Metadata in Python](https://www.thepythoncode.com/article/extract-media-metadata-in-python). ([code](python-for-multimedia/extract-video-metadata))
     - [How to Record a Specific Window in Python](https://www.thepythoncode.com/article/record-a-specific-window-in-python). ([code](python-for-multimedia/record-specific-window))
-    
+    - [How to Add Audio to Video in Python](https://www.thepythoncode.com/article/add-audio-to-video-in-python). ([code](python-for-multimedia/add-audio-to-video))
 
 For any feedback, please consider pulling requests.
diff --git a/python-for-multimedia/add-audio-to-video/Directed-by-Robert.mp3 b/python-for-multimedia/add-audio-to-video/Directed-by-Robert.mp3
diff --git a/python-for-multimedia/add-audio-to-video/README.md b/python-for-multimedia/add-audio-to-video/README.md
@@ -0,0 +1,4 @@
+# [How to Add Audio to Video in Python](https://www.thepythoncode.com/article/add-audio-to-video-in-python)
+To run this:
+- `pip3 install -r requirements.txt`
+- `python add_audio_to_video_moviepy.py --help`
diff --git a/python-for-multimedia/add-audio-to-video/add_audio_to_video_moviepy.py b/python-for-multimedia/add-audio-to-video/add_audio_to_video_moviepy.py
@@ -0,0 +1,42 @@
+from moviepy.editor import VideoFileClip, AudioFileClip, CompositeAudioClip
+import argparse
+
+# make a command-line argument parser & add various parameters
+parser = argparse.ArgumentParser(description="Python script to add audio to video clip")
+parser.add_argument("-v", "--video-file", help="Target video file")
+parser.add_argument("-a", "--audio-file", help="Target audio file to embed with the video")
+parser.add_argument("-s", "--start", help="Start duration of the audio file, default is 0", default=0, type=int)
+parser.add_argument("-e", "--end", help="The end duration of the audio file, default is the length of the video file", type=int)
+parser.add_argument("-c", "--composite", help="Whether to add to the existing audio in the video", action="store_true", default=False)
+parser.add_argument("-f", "--volume-factor", type=float, default=1.0, help="The volume factor to multiply by the volume of the audio file, 1 means no change, below 1 will decrease volume, above will increase.")
+# parse the arguments
+args = parser.parse_args()
+video_file = args.video_file
+audio_file = args.audio_file
+start = args.start
+end = args.end
+composite = args.composite
+volume_factor = args.volume_factor
+# print the passed parameters, just for logging
+print(vars(args))
+# load the video
+video_clip = VideoFileClip(video_file)
+# load the audio
+audio_clip = AudioFileClip(audio_file)
+# use the volume factor to increase/decrease volume
+audio_clip = audio_clip.volumex(volume_factor)
+# if end is not set, use video clip's end
+if not end:
+    end = video_clip.end
+# make sure audio clip is less than video clip in duration
+# setting the start & end of the audio clip to `start` and `end` paramters
+audio_clip = audio_clip.subclip(start, end)
+# composite with the existing audio in the video if composite parameter is set
+if composite:
+    final_audio = CompositeAudioClip([video_clip.audio, audio_clip])
+else:
+    final_audio = audio_clip
+# add the final audio to the video
+final_clip = video_clip.set_audio(final_audio)
+# save the final clip
+final_clip.write_videofile("final.mp4")
diff --git a/python-for-multimedia/add-audio-to-video/requirements.txt b/python-for-multimedia/add-audio-to-video/requirements.txt
@@ -0,0 +1 @@
+moviepy
diff --git a/python-for-multimedia/add-audio-to-video/zoo.mp4 b/python-for-multimedia/add-audio-to-video/zoo.mp4
