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Sorry, but your script fails with ffmpeg 3.0.1, with inputs #0 to #4 it returns:"Invalid file index 5 in filtergraph description"
– Krzysztof Bociurko
Commented May 18, 2016 at 12:30
TobySpeight: good point, I've edited the answer to be more clear. Basically the main idea is already given by @LordNeckbeard above. This script just generalizes to many images.
– anh_ng8
Commented Sep 21, 2016 at 12:54

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Correct minor typos or mistakes
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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

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