# Custom video players + mp4s

**URL:** <https://forum.kirupa.com/t/custom-video-players-mp4s/283662>\
**Category:** flash\
**Created:** [March 9, 2009, 7:55pm UTC](https://forum.kirupa.com/t/custom-video-players-mp4s/283662 "2009-03-09T19:55:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![wolcotter](https://avatars.discourse-cdn.com/v4/letter/w/6bbea6/32.png) [@wolcotter](https://forum.kirupa.com/u/wolcotter)\
**Post date:** [March 9, 2009, 7:55pm UTC](https://forum.kirupa.com/t/custom-video-players-mp4s/283662/1 "2009-03-09T19:55:21Z")

</div>

I’m having issues getting mp4s to load correctly locally when I test for a custom video player I’m building. The same code loads flvs just fine. Are there differences in the way you code for the two formats I should know about?

Thanks/help appreciated