#  `unpause`

Remove 'pause' frames from a slide deck
## Usage
> pdftl `<input>` `unpause` `[dpi=<val>]` `[ink=<val>|auto]` `[survival=<val>]` `output` `<file>`

## Details
The `unpause` operation removes intermediate animation frames from PDF
slide decks, such as those produced by LaTeX Beamer with `\pause` or
`\uncover` directives.

The algorithm renders each page at low resolution and checks whether all
ink pixels from the previous page are still present on the current page.
If they are, the previous page is considered an intermediate animation
frame and is discarded. Only pages where ink disappears or moves are
kept, plus the final page.

The `dpi=<val>` argument controls render resolution for comparison
(default: 72). Higher values are slower but more accurate for fine detail.

The `ink=<val>` argument is the pixel darkness threshold (0-255) below
which a pixel is considered ink (default: auto). In auto mode, Otsu's
method is used per page.

The `survival=<val>` argument is the minimum fraction (0.0-1.0) of ink
pixels from the previous page that must survive on the current page for
it to be considered a continuation (default: 0.98). Genuine Beamer
transitions produce survival=1.00; new slides typically produce <0.20.
## Examples

> Remove animation frames from a Beamer PDF
```
pdftl slides.pdf unpause output stripped.pdf
```

> Use stricter survival threshold
```
pdftl slides.pdf unpause survival=0.99 output stripped.pdf
```

> Higher resolution comparison for fine detail
```
pdftl slides.pdf unpause dpi=150 output stripped.pdf
```


**Tags**: pages, images, slides

*Source: pdftl.operations.unpause*

*Read online: [https://pdftl.readthedocs.io/en/latest/operations/unpause.html](https://pdftl.readthedocs.io/en/latest/operations/unpause.html)*

*Type: Operation*