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chore: update documentations

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Adrian Shum 2022-10-22 12:20:05 +08:00
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@ -41,14 +41,12 @@ imagorvideo then converts the selected frame to RGB image data, forwards to the
imagorvideo supports the following filters, which can be used in conjunction with [imagor filters](https://github.com/cshum/imagor#filters): imagorvideo supports the following filters, which can be used in conjunction with [imagor filters](https://github.com/cshum/imagor#filters):
- `frame(n)` specifying the frame index `n` for imaging. This allows skipping the default automatic selection, which involves computing root-mean-square error (RMSE) of histogram frames data. - `frame(n)` specifying the time position, duration or frame index for imaging, which skips the default automatic selection:
- Float between `0.0` and `1.0` indices position of the video. Example `frame(0.5)`, `frame(1.0)`
- Time duration indices the elasped time since the start of video. Example `frame(5m1s)`, `frame(200s)`
- Number starts from 1 indices frame index, example `frame(1)`, `frame(10)`
- `max_frames(n)` restrict the maximum number of frames allocated for image selection. The smaller the number, the faster the processing time. - `max_frames(n)` restrict the maximum number of frames allocated for image selection. The smaller the number, the faster the processing time.
Example:
```
http://localhost:8000/unsafe/300x0/7x7/filters:max_frames(70):fill(yellow)/http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4
```
### Metadata ### Metadata
imagorvideo provides metadata endpoint that extracts video metadata, including dimension, duration and FPS data. The endpoint only processes the header without extracting the frame data. imagorvideo provides metadata endpoint that extracts video metadata, including dimension, duration and FPS data. The endpoint only processes the header without extracting the frame data.