# About the crossdomain question

**URL:** <https://forum.kirupa.com/t/about-the-crossdomain-question/273293>\
**Category:** flash\
**Created:** [October 14, 2008, 2:21am UTC](https://forum.kirupa.com/t/about-the-crossdomain-question/273293 "2008-10-14T02:21:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![zhangxiaorui](https://avatars.discourse-cdn.com/v4/letter/z/e495f1/32.png) [@zhangxiaorui](https://forum.kirupa.com/u/zhangxiaorui)\
**Post date:** [October 14, 2008, 2:21am UTC](https://forum.kirupa.com/t/about-the-crossdomain-question/273293/1 "2008-10-14T02:21:31Z")

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In the docs from [Adobe.com](http://Adobe.com),  
it says: Cross-domain policy files affect access to a number of assets, including the following:

- Data in bitmaps, sounds, and **[COLOR=red]videos [/COLOR]**
- Loading XML and text files
- Access to socket and XML socket connections
- Importing SWF files from other security domains into the security domain of the loading SWF file

But when I tried to access the videos on Youtube, I found it possible to load and play, seek completely. But checked this file, [http://www.youtube.com/crossdomain.xml](http://www.youtube.com/crossdomain.xml) it did not put my domain on it. (not only locally but also when putting my swf on a server) So why sometimes we can access the flv files but sometimes we cannot do that with XML files? It’s really weird Thanks