# can not play streaming on player (video js, vlc player)

**URL:** <https://community.wowza.com/t/can-not-play-streaming-on-player-video-js-vlc-player/54937>\
**Category:** Wowza Streaming Engine\
**Created:** [April 3, 2020, 4:09pm UTC](https://community.wowza.com/t/can-not-play-streaming-on-player-video-js-vlc-player/54937 "2020-04-03T16:09:58Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![solution\_webinars](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@solution\_webinars](https://community.wowza.com/u/solution_webinars)\
**Post date:** [April 3, 2020, 4:09pm UTC](https://community.wowza.com/t/can-not-play-streaming-on-player-video-js-vlc-player/54937/1 "2020-04-03T16:09:58Z")

</div>

Hi

my trouble status is as below

(wowza version is 4.7.7)

encoder -\> wowza server is ok ( incoming source is normal)

but can not play in plyaer(video js, vlc - hls streaming)

i use aws ec2 c9.5xlarge (elastic ip, streamlock url)

more than 2 years, streaming service has no problem, but suddenly i got trouble

please guide me

here is my error log

ERROR server comment 2020-04-01 05:21:40 - - - - - 3.453 - - - - - - - - Zero sized function (client:2038259963:FMLE/3.0): type:20 size:0:

WARN server comment 2020-04-01 05:21:40 - - - - - 3.453 - - - - - - - - TranscodingSession.handlePacket[live/_definst_]: Video codec is not supported by transcoder. Can only be used as PassThru: UNKNOWN[0]

WARN server comment 2020-04-01 06:44:25 - - - - - 136.101 - - - - - - - - Missing function: xsbwtest

---

<div class="post-metadata">

**Author:** ![Karel\_Boek](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/karel_boek/32/454_2.png) [@Karel\_Boek](https://community.wowza.com/u/Karel_Boek)\
**Post date:** [April 3, 2020, 4:31pm UTC](https://community.wowza.com/t/can-not-play-streaming-on-player-video-js-vlc-player/54937/2 "2020-04-03T16:31:27Z")

</div>

The warning message gives you a hint: “Video codec is not supported by transcoder”, so check which video codec you’ve set up on the encoder. Maybe there’s been a change in your encoder setup lately? If not please specify which video codec and transport protocol you use to publish the stream.