# TTML captions with overlapped cues

**URL:** <https://community.wowza.com/t/ttml-captions-with-overlapped-cues/52776>\
**Category:** Wowza Streaming Engine\
**Created:** [February 1, 2019, 11:33pm UTC](https://community.wowza.com/t/ttml-captions-with-overlapped-cues/52776 "2019-02-01T23:33:58Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Brian\_Laske1](https://avatars.discourse-cdn.com/v4/letter/b/ee7513/32.png) [@Brian\_Laske1](https://community.wowza.com/u/Brian_Laske1)\
**Post date:** [February 1, 2019, 11:33pm UTC](https://community.wowza.com/t/ttml-captions-with-overlapped-cues/52776/1 "2019-02-01T23:33:58Z")

</div>

I am constructing VOD HLS streams out of S3 with captions. The captions are loaded from a TTML file and converted to WebVTT format in the HLS stream. We are seeing a problem when the TTML contains captions with overlapping begin/end times, but with different positions. For example:

```auto
<p begin="01:01:39.491" xml:id="p8" end="01:01:43.704" region="pop1" xml:space="preserve"tts:origin="15.00% 79.33%"style="basic">
  <span tts:fontStyle="italic">Line One</span>
</p>

<p begin="01:01:39.491" xml:id="p9" end="01:01:43.704" region="pop2" xml:space="preserve"tts:origin="12.50% 84.67%"style="basic">
  <span tts:fontStyle="italic">Line Two</span>
</p>

```

In the above, I would expect to see “Line One” placed above “Line Two” on the screen.

When Wowza converts this to VTT, it looks like this:

```auto
00:01:35.491 --> 00:01:39.704
<i>Line One</i>
00:01:35.491 --> 00:01:39.704
<i>Line Two</i>

```

The result is that players show only “Line Two”. In order for this to be rendered properly, I would expect the output to look more like this:

```auto

00:01:35.491 --> 00:01:39.704
<i>Line One</i>
<i>Line Two</i>

```

Does Wowza support conversion of TTML captions this way? Is there anything we can do to work around this problem?