AWS MediaConvert CMAF format HLS not working

Question

I'm using AWS Elemental MediaConvert to encode to CMAF, which as I understand will allow for a single format to stream to all devices. However I'm having issues getting HLS streaming to work with any player.

DASH is working:

https://bitmovin.com/demos/stream-test?format=dash&manifest=https%3A%2F%2Fstream-test1234.s3.amazonaws.com%2Fpreview%2F05f3e320-c5b6-11e9-97ce-35297279db3d.mpd

HLS is not:

https://bitmovin.com/demos/stream-test?format=hls&manifest=https%3A%2F%2Fstream-test1234.s3.amazonaws.com%2Fpreview%2F05f3e320-c5b6-11e9-97ce-35297279db3d.m3u8

Getting manifest errors:

1210/SOURCE_HLS_STREAM_ERROR
1202/SOURCE_MANIFEST_INVALID

I had similar problems with the shaka player that advertises CMAF support:

https://codesandbox.io/s/pedantic-haze-y6qxq (un-comment the manifestUri to test HLS)

Errors also seem to be related to the manifest:

HLS playlist has both Master and Media/Segment tags.

Contents of .m3u8 file:

#EXTM3U
#EXT-X-VERSION:6
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-STREAM-INF:BANDWIDTH=1231785,AVERAGE-BANDWIDTH=1214202,VIDEO-RANGE=SDR,CODECS="avc1.4d401f,mp4a.40.2",RESOLUTION=1280x720,FRAME-RATE=25.000,AUDIO="program_audio_0"
05f3e320-c5b6-11e9-97ce-35297279db3d.m3u8
#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="program_audio_0",LANGUAGE="eng",NAME="Alternate Audio",AUTOSELECT=YES,DEFAULT=YES,URI="05f3e320-c5b6-11e9-97ce-35297279db3d.m3u8"

Any ideas as to whats wrong? I just used the default CMAF settings provided by MediaConvert.

Look at the file name, and look at the url in the manifest. They are the same. — szatmary, Sep 03 '19 at 01:55
Yes but what should it be? Again this was generated using MediaConverts default settings for CMAF @szatmary — Bill Johnston, Sep 03 '19 at 18:50
It should be the URL for the media playlist, not the master playlist. — szatmary, Sep 03 '19 at 19:06

score 6 · Accepted Answer · answered Jan 12 '21 at 17:24

6

I know this is really old, but I just had the same problem and figured it out...

It turns out, when doing just HLS, MediaConvert requires Output Groups > Apple HLS > Output Settings > Name modifier which adds a name modifier to the file names and, most importantly, the HLS media manifest. However, when using CMAF output that same field exists at Output Groups > CMAF > H.254 (or whatever you choose) > Output Settings > Name modifier, but it is NOT required. So if you don't enter a name modifier the HLS master manifest and the HLS media manifest are given the same name. This results in the HLS master manifest overriding the HLS media manifest and then also referring to itself, since they both were given the same name.

I've reported this bug to AWS feedback, but who knows how long that will take or if they will get to it. I encourage anyone else who has this problem to do the same.

answered Jan 12 '21 at 17:24

zbauman

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After an entire day of debugging this solved it for me. Thank you so much @zbauman. – user1558646 Feb 25 '21 at 16:13
No worries @user1558646. I spent WEEKS working around MediaConvert issues. They really need to invest more time into that service. – zbauman Apr 12 '21 at 14:45
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Thank you for this, just ran into this issue earlier today – Festus Yuma Dec 09 '22 at 16:05
@FestusYuma no problem! Glad to see this is helping others – zbauman Dec 11 '22 at 16:37
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Thank you for this solution. This is still relevant. Although being optional in the API, the Web-GUI clearly states: "When you create multiple outputs in the same output group, Name modifier is required." – mana Aug 28 '23 at 14:35

AWS MediaConvert CMAF format HLS not working

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