# HLS Problem

**URL:** <https://community.wowza.com/t/hls-problem/39711>\
**Category:** Wowza Streaming Engine\
**Created:** [March 15, 2014, 5:40am UTC](https://community.wowza.com/t/hls-problem/39711 "2014-03-15T05:40:08Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Zoran](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/zoran/32/385_2.png) [@Zoran](https://community.wowza.com/u/Zoran)\
**Post date:** [March 16, 2014, 2:58pm UTC](https://community.wowza.com/t/hls-problem/39711/4 "2014-03-16T14:58:59Z")

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Hi,

Yes, you will need to make sure that the VOD files are properly key-frame aligned during the encoding process.

You can take a look at this forum post for an example on how to use FFMPEG to generate properly key-frame aligned VOD files:

> [@Frequently requested FFMPEG command examples for Wowza](http://community.wowza.com/t/-/36326):
>
> Example commands and information for using FFmpeg as a live video/audio encoder with Wowza Media Server. Updated for FFmpeg Build git-a85b4a5 64-bit Static (2012-07-30) Note: Wowza Media Systems provides these instructions on as “AS-IS” basis. FFmpeg is not a Wowza Media Systems product. If you have problems getting FFmpeg to work properly it is best to contact FFmpeg support through their forums or wiki. The information collected here is a brief overview of common FFmpeg solutions. It is int…

Zoran

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