# live stream with multiple audio language

**URL:** <https://community.wowza.com/t/live-stream-with-multiple-audio-language/34343>\
**Category:** Wowza Streaming Engine\
**Created:** [April 10, 2013, 10:27am UTC](https://community.wowza.com/t/live-stream-with-multiple-audio-language/34343 "2013-04-10T10:27:09Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![kv\_pham](https://avatars.discourse-cdn.com/v4/letter/k/7bcc69/32.png) [@kv\_pham](https://community.wowza.com/u/kv_pham)\
**Post date:** [December 9, 2015, 11:08pm UTC](https://community.wowza.com/t/live-stream-with-multiple-audio-language/34343/4 "2015-12-09T23:08:54Z")

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> You can do it with FFMPEG outside of Wowza – just combine separate video and audio streams into one new stream for each language you want:
> 
> [Wowza multiple Live audio with video streaming.](http://community.wowza.com/t/-/35752)
> 
> You may also be able to use FFMPEG to combine your video stream and multiple audio streams into one single MPEG-TS stream, then just select different audio tracks for playback with different “.stream” files in Wowza (as described in wifisolution’s second link above). I have not tried this method, though. Instructions for FFMPEG as Wowza MPEG-TS encoder here:
> 
> [Use FFmpeg to live stream with Wowza Streaming Engine](https://www.wowza.com/docs/how-to-use-ffmpeg-with-wowza-media-server-mpeg-ts)

the latter solution works very well:

1. ingest mpeg-ts over udp ==\> to wowza

e.g. free solution is to use ffmpeg:

ffmpeg -i input -map 0:0 (encoding parameters for video) -map 0:1 (encoding parameters for audio) language=eng -map 0:2 language=fre (as many -map as audio tracks) -f mpegts udp://[server IP]:[port]?pkt\_size=1316

1. create stream files for each language specifying the video PID, audio PID or language, with URI: udp://localhost:[port]

The stream files can then be called by a player.

If the player loads a playlist with the streams, one can then select each language.

wowza has options for improving the udp (jitter buffer etc, search for tutorials for mpeg-ts among the articles).

We have devised another solution since we’re not interested in real time applications but rather on the reliability of the streams;

we encode with ffmpeg in tcp.

Then on the server we start an ffmpeg listener per:

ffmpeg -i tcp://[server IP]:[ingest port] -map 0:0 -vcodec copy -map 0:1 -acodec copy (etc for each audio channel) - mpegts udp://localhost:[port indicated in stream files on wowza, may differ from ingest port]?pkt\_size=1316

The listener must be started before the encoder.

Since the tcp listener is on the same server as wowza, this minimizes packet loss.

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_[View the full topic](https://community.wowza.com/t/live-stream-with-multiple-audio-language/34343)._