---
title: Create image slideshow with ffmpeg
date: 2019-12-06
tags: [bash, ffmpeg]
---

# Create image slideshow with ffmpeg

Following will take all `*.jpg` images from current folder and create mp4 image slideshow.
Images can have different sizes, [ffmpeg](https://www.ffmpeg.org/ffmpeg.html) will rescale or pad them.

```shell script
ffmpeg -framerate 1/3 \
       -pattern_type glob -i '*.jpg' \
       -vf "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1" \
       -c:v libx264 -crf 14 -r 25 -pix_fmt yuv422p \
       output.mp4
```

* `-framerate 1/3` image will be change each 3 sec
* `-pattern_type glob -i '*.jpg'` will use all *.jpg images from current folder
* `-vf "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1"` rescale or pad image to 1280x720
* `-c:v libx264 ` use H.264 codec
* `-crf 14` CFR (Constant Rate Factor) is betweemn 0–51, where 0 is lossless, 23 is the default, and 51 is worst quality possible.
* `-r 25` set frame rate.
* `-pix_fmt` pixel output format


 With background music:

```shell script
ffmpeg -framerate 1/3 \
       -pattern_type glob -i '*.jpg' \
       -i audiofile.mp3 \
       -vf "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,setsar=1" \
       -c:v libx264 -crf 14 -r 25 -pix_fmt yuv422p \
       -shortest \
       output.mp4
```

* `-shortest` will take shorten source images or mp3 as length limit for video