# How to setup a support frame ?

**URL:** <https://community.wowza.com/t/how-to-setup-a-support-frame/42986>\
**Category:** Wowza Streaming Engine\
**Created:** [May 15, 2014, 6:41pm UTC](https://community.wowza.com/t/how-to-setup-a-support-frame/42986 "2014-05-15T18:41:48Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Oleg\_Artemov](https://avatars.discourse-cdn.com/v4/letter/o/b4bc9f/32.png) [@Oleg\_Artemov](https://community.wowza.com/u/Oleg_Artemov)\
**Post date:** [May 15, 2014, 6:41pm UTC](https://community.wowza.com/t/how-to-setup-a-support-frame/42986/1 "2014-05-15T18:41:48Z")

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Greeting!

How can i add the support frame (B-frame or keyframe) in WOWZA VOD app?

when i move to the forward or to the back of VOD-file, i see something like this:

![](http://savepic.net/5478153.jpg)

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**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\
**Post date:** [May 15, 2014, 3:56pm UTC](https://community.wowza.com/t/how-to-setup-a-support-frame/42986/2 "2014-05-15T15:56:16Z")

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Is this what you see in rtsp playback using VLC when the stream does contain b-frames? Or are you asking how to add b-frames to solve this playback issue?

Do you see the problem in Flash RTMP playback?

b-frames in Wowza can be problematic. They are not necessarily a problem, but they can be.

Richard

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**Author:** ![Richard\_Lanham](https://avatars.discourse-cdn.com/v4/letter/r/c68b51/32.png) [@Richard\_Lanham](https://community.wowza.com/u/Richard_Lanham)\
**Post date:** [May 15, 2014, 5:31pm UTC](https://community.wowza.com/t/how-to-setup-a-support-frame/42986/3 "2014-05-15T17:31:52Z")

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You have to do this with your file encoder, but this is adding complexity to the stream which might make playback more difficult in some players. You’ll have to test. We do have a [guide for file encoding for vod here](https://www.wowza.com/docs/how-to-encode-video-on-demand-content).

Richard

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**Author:** ![Oleg\_Artemov](https://avatars.discourse-cdn.com/v4/letter/o/b4bc9f/32.png) [@Oleg\_Artemov](https://community.wowza.com/u/Oleg_Artemov)\
**Post date:** [May 15, 2014, 6:58pm UTC](https://community.wowza.com/t/how-to-setup-a-support-frame/42986/4 "2014-05-15T18:58:44Z")

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I am asking how to add b-frames to solve this playback issue.