library

ffmpeg

The ffmpeg module (Python wrapper around the powerful FFmpeg command-line tool) is used to manipulate audio/video files and streams. Here's a breakdown of all common use cases of the ffmpeg module (such as ffmpeg-python):

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🔧 1. Transcoding (Convert Format)

import ffmpeg

ffmpeg.input('input.mp4').output('output.avi').run()

✅ Convert between formats like .mp4, .avi, .mkv, .mp3, .wav, etc.

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🗜️ 2. Compress Video/Audio

ffmpeg.input('input.mp4').output('output.mp4', video_bitrate='800k', audio_bitrate='128k').run()

✅ Reduce file size by adjusting bitrate.

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📐 3. Resize / Scale Video

ffmpeg.input('input.mp4').output('output.mp4', vf='scale=1280:720').run()

✅ Resize video resolution.

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✂️ 4. Trim / Cut Audio or Video

ffmpeg.input('input.mp4', ss=10, t=5).output('clip.mp4').run()

✅ Trim 5 seconds starting at 10 seconds.

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🔈 5. Extract Audio from Video

ffmpeg.input('input.mp4').output('output.mp3').run()

✅ Save only the audio track.

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🎞️ 6. Extract Frames from Video

ffmpeg.input('input.mp4').output('frame_%03d.jpg', vf='fps=1').run()

✅ Extract 1 frame per second.

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🧵 7. Merge Videos

ffmpeg.input('input1.mp4').output('input2.mp4').concat(v=1, a=1).output('merged.mp4').run()

✅ Merge two video files (both must have same codec and resolution).

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🔇 8. Remove Audio from Video

ffmpeg.input('input.mp4').output('no_audio.mp4', an=None).run()

✅ Strip out audio track.

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🖼️ 9. Convert Images to Video

ffmpeg.input('images/frame_%03d.jpg', framerate=24).output('slideshow.mp4').run()

✅ Create video from image sequence.

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🔤 10. Burn Subtitles into Video

ffmpeg.input('input.mp4').output('output.mp4', vf='subtitles=subtitle.srt').run()

✅ Add hardcoded subtitles.

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🔁 11. Loop Video or Audio

ffmpeg.input('input.mp4', stream_loop=3).output('looped.mp4').run()

✅ Repeat media multiple times.

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🔉 12. Adjust Volume

ffmpeg.input('input.mp3').output('output.mp3', af='volume=1.5').run()

✅ Increase or decrease volume.

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👨‍🎤 13. Add Background Audio to Video

video = ffmpeg.input('video.mp4')
audio = ffmpeg.input('music.mp3')
ffmpeg.output(video, audio, 'output.mp4', vcodec='copy', acodec='aac').run()

✅ Overlay music or narration.

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🏷️ 14. Read Metadata

import ffmpeg
probe = ffmpeg.probe('input.mp4')
print(probe['format']['duration'])

✅ Get video duration, bitrate, etc.

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📡 15. Stream to Server (RTMP, HLS)

ffmpeg.input('input.mp4').output('rtmp://server/app/stream_key').run()

✅ Use for live streaming to YouTube, Twitch, etc.

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🔤 16. Add Watermark

ffmpeg.input('input.mp4').output('output.mp4', vf="movie=logo.png [watermark]; [in][watermark] overlay=10:10 [out]").run()

✅ Add image watermark on video.

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📁 Common File Formats Handled

• Video: .mp4, .avi, .mkv, .mov, .flv

• Audio: .mp3, .wav, .aac, .ogg, .flac

• Image sequences: .jpg, .png, .bmp

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Would you like examples with CLI commands, more advanced filtering, or automation scripts?