improve readme

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Mikael Finstad 11 months ago
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- **Can LosslessCut crop, resize, stretch, mirror/flip, overlay text/images, watermark, blur, redact, re-encode, create GIF, slideshow, burn subtitles, color grading, fade/transition between video clips, fade/combine/mix/merge audio tracks or change audio volume?**
- No, these are all lossy operations (meaning you *have* to re-encode the file), but in the future I may start to implement such features. [See this issue for more information.](https://github.com/mifi/lossless-cut/issues/372). See also [#643](https://github.com/mifi/lossless-cut/issues/643).
- Can LosslessCut be batched/automated using a CLI or API?
- While it was never designed for advanced batching/automation, it does have a [basic CLI and a HTTP API](./cli.md), and there are a few feature requests regarding this: [#980](https://github.com/mifi/lossless-cut/issues/980) [#868](https://github.com/mifi/lossless-cut/issues/868).
- Can LosslessCut be batched/automated using a CLI or API or do external post-processing?
- While it was never designed for advanced batching/automation, it does have a [basic CLI and a HTTP API](./cli.md). More info: [#980](https://github.com/mifi/lossless-cut/issues/980) [#868](https://github.com/mifi/lossless-cut/issues/868).
- Is there a keyboard shortcut to do X?
- First check the Keyboard shortcuts dialog. If you cannot find your shortcut there, [see this issue.](https://github.com/mifi/lossless-cut/issues/254)
- When will you implement feature X?
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## EXIF / metadata
EXIF/metadata can be preserved (see Export Options dialog), but it doesn't always output compliant files, so use it carefully. Alternatively you can use [exiftool](https://exiftool.org/) after exporting with LosslessCut to transfer metadata, for example:
It is a known problem that FFmpeg will not always preserve metadata correctly. More info [#1027](https://github.com/mifi/lossless-cut/issues/1027). Some metadata can be preserved (see Export Options dialog), but it doesn't always output compliant files, so use it carefully. Alternatively you can use [exiftool](https://exiftool.org/) after exporting with LosslessCut to transfer metadata, for example:
```bash
exiftool -tagsFromFile original-source-file.mp4 -all:all -overwrite_original exported-from-losslesscut.mp4
exiftool -tagsFromFile Original-Source-File.mp4 -all:all -overwrite_original Exported-From-LosslessCut.mp4
```
More info [#1027](https://github.com/mifi/lossless-cut/issues/1027)
## Proprietary data tracks list
When exporting, LosslessCut may be unable to process certain proprietary tracks. For example `tmcd`, `fdsc` and `gpmd` added by GoPro. These can however be losslessly exported to separate files if you want to keep this data for later.

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