# ModuleAVMix
**URL:** https://community.wowza.com/t/moduleavmix/475
**Category:** Wowza Developer Dojo
**Tags:** wowza-streaming-server-java-api
**Created:** [May 12, 2016, 10:34am UTC](https://community.wowza.com/t/moduleavmix/475 "2016-05-12T10:34:18Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@system](https://community.wowza.com/u/system)
#### Post date: [May 12, 2016, 10:34am UTC](https://community.wowza.com/t/moduleavmix/475/1 "2016-05-12T10:34:18Z")
Hi,
I have a video and audio available in two different locations and I would like to mux together the sources to produce a single AV stream. Since the encoders arent shared the timecodes will be very different.
I intended to use FFmpeg to inject timecodes into the stream at the source (before it gets to wowza) so that i can then tie together the sources as closely as possible. I can also make adjustments in the ffmpeg codes to allow for any delays that I need to introduce.
My question is, what “timecode” does Wowza listen to? There are lots of different ways of doing that…
Thanks,
Joe
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### Author:  [@Jason\_Hatchett](https://community.wowza.com/u/Jason_Hatchett)
#### Post date: [May 17, 2016, 3:06am UTC](https://community.wowza.com/t/moduleavmix/475/2 "2016-05-17T03:06:42Z")
Hello Joe,
First I woudl point you to this section in relation to how timecodes are used within Wowza:
[https://www.wowza.com/docs/how-to-debug-aac-or-mp3-timecode-issues-with-apple-hls-packetization](https://www.wowza.com/docs/how-to-debug-aac-or-mp3-timecode-issues-with-apple-hls-packetization)
I would also like to point you to the following article on FFmpeg:
[https://www.wowza.com/docs/how-to-use-ffmpeg-with-wowza-media-server-mpeg-ts](https://www.wowza.com/docs/how-to-use-ffmpeg-with-wowza-media-server-mpeg-ts)
Please let me know if you have any remaining questions after reviewing these articles.
Regards,
Jason Hatchett