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23 lines
1.2 KiB
Markdown
23 lines
1.2 KiB
Markdown
---
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title: "Transforming Videos into GIFs for Slides"
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date: 2019-12-04T10:13:35-05:00
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draft: false
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tags: ["Audio-Video"]
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medium_enabled: true
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---
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I like using GIFs in Google Slides because it doesn't require any interaction to start playing right away. Therefore, I looked at a couple resources to add a GIF from a video into my presentation. Of course this is all using one of my favorite terminal tools `ffmpeg`.
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First of all, I wanted to include a video of a bot playing Pong. The video was a little long, so I decided speed it up for a more time-lapse type feel.
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[From the FFMPEG website](https://trac.ffmpeg.org/wiki/How%20to%20speed%20up%20/%20slow%20down%20a%20video): To 10x the speed `ffmpeg -i input.mkv -filter:v "setpts=0.1*PTS" output.mkv`
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You just need to replace the `0.1` with the appropriate decimal number to change the speed.
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Giphy has a great [writeup](https://engineering.giphy.com/how-to-make-gifs-with-ffmpeg/) describing the commands to use in order to make your GIF look nice.
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```bash
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ffmpeg -i inputvideo.mp4 -filter_complex "[0:v] palettegen" palette.png
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ffmpeg -i inputvideo.mp4 -i palette.png -filter_complex "[0:v][1:v] paletteuse" output.gif
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```
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