# Wowza chunk duration differs between Live and DVR

**URL:** <https://community.wowza.com/t/wowza-chunk-duration-differs-between-live-and-dvr/53329>\
**Category:** Wowza Streaming Engine\
**Created:** [May 14, 2019, 4:23pm UTC](https://community.wowza.com/t/wowza-chunk-duration-differs-between-live-and-dvr/53329 "2019-05-14T16:23:53Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Alex\_Knurenko1](https://avatars.discourse-cdn.com/v4/letter/a/b3f665/32.png) [@Alex\_Knurenko1](https://community.wowza.com/u/Alex_Knurenko1)\
**Post date:** [May 14, 2019, 4:23pm UTC](https://community.wowza.com/t/wowza-chunk-duration-differs-between-live-and-dvr/53329/1 "2019-05-14T16:23:53Z")

</div>

Hi,

I have a Live + DVR application, where cupertinoChunkDurationTarget is set to 10 seconds,

cupertinoMaxChunkCount = 10 and cupertinoPlaylistChunkCount = 3, all default values (i changed it temporarily to 2 sec., but returned to the default values shortly after).

What I see is the follows: the chunk duration of the live stream when I download and play the .ts file is 10 seconds, but if I add the DVR switch, the chunk size becomes 2 seconds. The encoder is set to send a keyframe every 2 seconds, 25 FPS, Baseline 3.1

Is there a different configuration for Live vs DVR chunk duration? My goal in general is not to lower latency, but to create a most “stable” solution with Wowza and Brightcove player

Thanks,

Alex

---

<div class="post-metadata">

**Author:** ![Gustavo\_Villegas](https://avatars.discourse-cdn.com/v4/letter/g/57b2e6/32.png) [@Gustavo\_Villegas](https://community.wowza.com/u/Gustavo_Villegas)\
**Post date:** [May 14, 2019, 7:18pm UTC](https://community.wowza.com/t/wowza-chunk-duration-differs-between-live-and-dvr/53329/2 "2019-05-14T19:18:10Z")

</div>

Check this doc

[https://www.wowza.com/docs/how-to-do-advanced-configuration-for-wowza-ndvr](https://www.wowza.com/docs/how-to-do-advanced-configuration-for-wowza-ndvr)