# CODECS attribute not added to HLS playlist generated from SMIL file

**URL:** <https://community.wowza.com/t/codecs-attribute-not-added-to-hls-playlist-generated-from-smil-file/34900>\
**Category:** Wowza Streaming Engine\
**Created:** [July 24, 2013, 10:35am UTC](https://community.wowza.com/t/codecs-attribute-not-added-to-hls-playlist-generated-from-smil-file/34900 "2013-07-24T10:35:32Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Simon\_Buckle](https://avatars.discourse-cdn.com/v4/letter/s/aeb1de/32.png) [@Simon\_Buckle](https://community.wowza.com/u/Simon_Buckle)\
**Post date:** [July 24, 2013, 10:35am UTC](https://community.wowza.com/t/codecs-attribute-not-added-to-hls-playlist-generated-from-smil-file/34900/1 "2013-07-24T10:35:32Z")

</div>

I created a SMIL file that contains a video playlist with different bitrates. When I retrieve the playlist for HLS streaming, I noticed the CODECS attribute was missing:

```auto
$ curl http://<host>/vod/smil:bigbuckbunny.smil/playlist.m3u8
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=450000
chunklist_w1013079230_b450000.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=64000
chunklist_w1013079230_b64000_ao.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=750000
chunklist_w1013079230_b750000.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1100000
chunklist_w1013079230_b1100000.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=1500000
chunklist_w1013079230_b1500000.m3u8

```

I upgraded my install to 3.6.2.07. The development builds page states that the patch contains a fix for this:

“Fixed Apple HLS streaming when using SMIL files to be sure cupertinoCalculateCodecs and cupertinoCalculateResolution is properly honored”

I’m not seeing this. I followed the instructions in README.txt to the letter and I checked that the version that is running is 3.6.2.07 but I’m not seeing the CODECS attribute being added to the generated playlist. Any thoughts?

One thing I did notice is that the README says, 'Copy contents of “bin”, “conf”, “lib” and “lib-native” folders …", but there is no “conf” folder in the download.

Thanks

---

<div class="post-metadata">

**Author:** ![Jason\_Hilton](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/jason_hilton/32/437_2.png) [@Jason\_Hilton](https://community.wowza.com/u/Jason_Hilton)\
**Post date:** [July 25, 2013, 10:35am UTC](https://community.wowza.com/t/codecs-attribute-not-added-to-hls-playlist-generated-from-smil-file/34900/2 "2013-07-25T10:35:53Z")

</div>

Hi,

Resolution and codec is something you have to add manually.

Please see the following guide,

[https://www.wowza.com/docs/how-to-add-resolution-and-codec-metadata-to-ios-streams](https://www.wowza.com/docs/how-to-add-resolution-and-codec-metadata-to-ios-streams)

Thanks for pointing this out but it’s a typo, you do not need to replace or add anything in the [Wowza-install]/conf directory for this patch.

Jason