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@ -40,15 +40,10 @@ Take for example a signal graph that looks like this:
The corresponding command-line arguments are pretty gnarly:
```bash
ffmpeg -i input.mp4 \
-filter_complex "\
[0]trim=start_frame=10:end_frame=20[v0];\
[0]trim=start_frame=30:end_frame=40[v1];\
[v0][v1]concat=n=2[v2];\
[1]hflip[v3];\
[v2][v3]overlay=eof_action=repeat[v4];\
[v4]drawbox=50:50:120:120:red:t=5[v5]"\
-map [v5] output.mp4
ffmpeg -i input.mp4 -filter_complex "[0]trim=start_frame=10:end_frame=20[v0];\
[0]trim=start_frame=30:end_frame=40[v1];[v0][v1]concat=n=2[v2];[1]hflip[v3];\
[v2][v3]overlay=eof_action=repeat[v4];[v4]drawbox=50:50:120:120:red:t=5[v5]"\
-map [v5] output.mp4
```
Maybe this looks great to you, but if you're not an FFmpeg command-line expert, it probably looks alien.
@ -140,13 +135,22 @@ Or fluently:
)
```
When in doubt, refer to the [existing filters](https://github.com/kkroening/ffmpeg-python/blob/master/ffmpeg/_filters.py) and/or the [official ffmpeg documentation](https://ffmpeg.org/ffmpeg-filters.html).
Arguments with special names such as `-qscale:v` can be specified as a keyword-args dictionary as follows:
```python
(ffmpeg
.input('dummy.mp4')
.output('dummy2.mp4', **{'qscale:v': 3})
.run()
)
```
When in doubt, refer to the [existing filters](https://github.com/kkroening/ffmpeg-python/blob/master/ffmpeg/_filters.py), [examples](https://github.com/kkroening/ffmpeg-python/tree/master/examples), and/or the [official ffmpeg documentation](https://ffmpeg.org/ffmpeg-filters.html).
## Contributing
<img align="right" src="https://raw.githubusercontent.com/kkroening/ffmpeg-python/master/doc/logo.png" alt="ffmpeg-python logo" width="20%" />
Feel free to report any bugs or feature requests.
Feel free to report any bugs or submit feature requests.
It should be fairly easy to use filters that aren't explicitly built into `ffmpeg-python` but if there's a feature or filter you'd really like to see included in the library, don't hesitate to open a feature request.