# FAQ

## Playback

**Black screen / will not play?**

Browsers do not all handle mkv or ts. Try another browser, or convert to mp4. It may also be a broken mount — test the connection.

**Seeking? Quality switching?**

You can seek. There is no quality switch: the file on the drive is what plays.

**Progress not saved?**

A flaky network can drop progress reports. Drag the slider if a spot is missing.

## Danmaku

**None at all?**

Work through this:

1. Was the video identified? If not, [identify it](/en/guide/scrape)
2. Is the match correct? A wrong match pulls the wrong pool
3. Is the danmaku network up?
4. Still nothing? [Import XML](/en/guide/danmaku)

**Too dense?**

Lower opacity and density, or turn it off.

**Can I send danmaku?**

Yes. It goes to the public pool.

## Mounts

**Test connection fails?**

- Use the WebDAV root, not a web page URL
- For OpenList, use the WebDAV endpoint
- Check username, password, and the HTTPS certificate

**Why not SMB / Emby?**

v1 is WebDAV only. More later if there is demand.

## Accounts

**Is email required?**

Depends on your deployment. Locally, the seeded admin is enough.

**Can I see what others watched?**

No. Progress is private.