mirror of
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96 lines
3.2 KiB
Markdown
96 lines
3.2 KiB
Markdown
# Examples
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## [Get video info](https://github.com/kkroening/ffmpeg-python/blob/master/examples/video_info.py#L15)
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```python
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probe = ffmpeg.probe(args.in_filename)
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video_stream = next((stream for stream in probe['streams'] if stream['codec_type'] == 'video'), None)
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width = int(video_stream['width'])
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height = int(video_stream['height'])
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```
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## [Generate thumbnail for video](https://github.com/kkroening/ffmpeg-python/blob/master/examples/get_video_thumbnail.py#L21)
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/examples/graphs/get_video_thumbnail.png" alt="get-video-thumbnail graph" width="30%" />
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```python
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(
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ffmpeg
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.input(in_filename, ss=time)
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.filter_('scale', width, -1)
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.output(out_filename, vframes=1)
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.run()
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)
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```
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## Process audio and video simultaneously
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/examples/graphs/av-pipeline.png" alt="av-pipeline graph" width="80%" />
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```python
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in1 = ffmpeg.input('in1.mp4')
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in2 = ffmpeg.input('in2.mp4')
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v1 = in1['v'].hflip()
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a1 = in1['a']
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v2 = in2['v'].filter_('reverse').filter_('hue', s=0)
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a2 = in2['a'].filter_('areverse').filter_('aphaser')
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joined = ffmpeg.concat(v1, a1, v2, a2, v=1, a=1).node
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v3 = joined[0]
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a3 = joined[1].filter_('volume', 0.8)
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out = ffmpeg.output(v3, a3, 'out.mp4')
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out.run()
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```
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## [Convert video to numpy array](https://github.com/kkroening/ffmpeg-python/blob/master/examples/ffmpeg-numpy.ipynb)
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/examples/graphs/ffmpeg-numpy.png" alt="ffmpeg-numpy graph" width="20%" />
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```python
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out, _ = (
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ffmpeg
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.input('in.mp4')
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.output('pipe:', format='rawvideo', pix_fmt='rgb24')
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.run(capture_stdout=True)
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)
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video = (
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np
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.frombuffer(out, np.uint8)
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.reshape([-1, height, width, 3])
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)
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```
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## [Read single video frame as jpeg through pipe](https://github.com/kkroening/ffmpeg-python/blob/master/examples/read_frame_as_jpeg.py#L16)
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/examples/graphs/read_frame_as_jpeg.png" alt="read-frame-as-jpeg graph" width="30%" />
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```python
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out, _ = (
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ffmpeg
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.input(in_filename)
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.filter_('select', 'gte(n,{})'.format(frame_num))
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.output('pipe:', vframes=1, format='image2', vcodec='mjpeg')
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.run(capture_output=True)
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)
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```
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## [Convert sound to raw PCM audio](https://github.com/kkroening/ffmpeg-python/blob/master/examples/transcribe.py#L23)
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/examples/graphs/transcribe.png" alt="transcribe graph" width="30%" />
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```python
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out, _ = (ffmpeg
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.input(in_filename, **input_kwargs)
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.output('-', format='s16le', acodec='pcm_s16le', ac=1, ar='16k')
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.overwrite_output()
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.run(capture_stdout=True)
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)
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```
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## [Jupyter Frame Viewer](https://github.com/kkroening/ffmpeg-python/blob/master/examples/ffmpeg-numpy.ipynb)
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/doc/jupyter-screenshot.png" alt="jupyter screenshot" width="75%" />
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## [Jupyter Stream Editor](https://github.com/kkroening/ffmpeg-python/blob/master/examples/ffmpeg-numpy.ipynb)
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<img src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/doc/jupyter-demo.gif" alt="jupyter demo" width="75%" />
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