## Description: 
Embedding local videos with the video shortcode fails.

## Steps to Reproduce:
- Create `index.qmd`
Where `local-video.mp4` is in the same directory as `index.qmd`.

```
---
format: 
  revealjs:
    embed-resources: true
---

{{< video local-video.mp4 >}}

```
or

```
---
format: 
  html:
    embed-resources: true
---

{{< video local-video.mp4 >}}

```

- `quarto preview index.qmd`

### Expected Result:
The video loads and is playable just like it would be if `embed-resources: false`

### Actual Result:
The video doesn't load.

reveal-js: an error message `No compatible source was found for this media.` is displayed.
html: no error message, video is not playable

#### Workaround
- Use `![](local-video.mp4)` instead of the shortcode.  The video is not responsive.
- `embed-resources: false`


----


### Bug description

Hi,

I would like to build a self contained html-revealjs with local videos. Yet, `embed-ressources: true` does not include videos added with `{{< video local-video.mp4 >}}` while it does with `background-video="local-video.mp4"` (Ubuntu 22.04, quarto v1.2).

```md
---
title: ""
format: 
  revealjs:
    embed-resources: true
---
  
##  {background-video="local-video.mp4"}

## 

{{< video local-video.mp4 >}}
```

### Checklist

- [x] Please include a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [x] Please [format your issue](https://quarto.org/bug-reports.html#formatting-make-githubs-markdown-work-for-us) so it is easier for us to read the bug report.
- [ ] Please document the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [x] Please document the operating system you're running. If on Linux, please provide the specific distribution.
cscheid
2023-01-09T10:56:41Z
Balaika
bug video
v1.4
open
Embedding local videos with the video shortcode fails.
https://github.com/quarto-dev/quarto-cli/issues/3892