# mpegts audio packets aligned problem

**URL:** <https://community.wowza.com/t/mpegts-audio-packets-aligned-problem/45295>\
**Category:** Wowza Streaming Engine\
**Created:** [August 28, 2015, 2:16am UTC](https://community.wowza.com/t/mpegts-audio-packets-aligned-problem/45295 "2015-08-28T02:16:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![zheng\_leo](https://avatars.discourse-cdn.com/v4/letter/z/c67d28/32.png) [@zheng\_leo](https://community.wowza.com/u/zheng_leo)\
**Post date:** [August 28, 2015, 2:16am UTC](https://community.wowza.com/t/mpegts-audio-packets-aligned-problem/45295/1 "2015-08-28T02:16:56Z")

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Hi,

I have a multicast mpegts stream with mpeg2 video + ac3 audio sending to wowza transcoder, ac3 passthrough already setup, but it will have about 10 seconds with no audio of the transcoder output when start transcoding, so i set the property “mpegtsAudioIsAligned” to “true”, it worked. But it will cause another problem, the player needed waiting about 10 seconds to play the stream, i’m confused about it, but have no idea how to deal with the problem.

anything i can do to debug this problem?

thanks very much!

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**Author:** ![Michelle\_B](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/michelle_b/32/394_2.png) [@Michelle\_B](https://community.wowza.com/u/Michelle_B)\
**Post date:** [August 28, 2015, 4:14pm UTC](https://community.wowza.com/t/mpegts-audio-packets-aligned-problem/45295/2 "2015-08-28T16:14:57Z")

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Hi Leo,

Have you tried adding a [server-side buffer](https://www.wowza.com/docs/how-to-fix-unaligned-video-and-audio-with-a-server-side-sort-buffer) to the stream?

Michelle