Playlist HLS Streaming issue with missing of TS chunks

Wowza Streaming Engine
1

Hi,

We are identifying issue in Video playback for HLS live stream of a Playlist in wowza.

Can you please assist us in resolving the issue. Attached are the logs from Apple mediastreamvalidator Tool.

We have tried different options as well in modifying the settings in Cupertino Streaming Packetizer

cupertinoChunkDurationTarget :2000

cupertinoMaxChunkCount :10

cupertinoPlaylistChunkCount :2

Log details:

Jul 16 2015 12:38:00.912: Processing transport stream

Jul 16 2015 12:38:00.912: New track id: 1, media type vide

Jul 16 2015 12:38:00.912: New track id: 2, media type soun

Jul 16 2015 12:38:00.912: New track id: 3, media type meta

Jul 16 2015 12:38:00.912: New format description for track id: 1, media type vide, sub type avc1

Jul 16 2015 12:38:00.912: Parsed H.264 profile 100 and level 2.1

Jul 16 2015 12:38:00.919: New format description for track id: 2, media type soun, sub type aac

Jul 16 2015 12:38:00.921: Validation completed: /StreamCast/Channel12187/media_w973359751_3774.ts [301.56 kbits/sec]

Jul 16 2015 12:38:00.921: Size: 75388 bytes Duration: 2.0010 sec Bitrate: 301.25 kbits/sec

Jul 16 2015 12:38:00.921: Validation starting: /StreamCast/Channel12187/media_w973359751_3775.ts [301.56 kbits/sec]

Jul 16 2015 12:38:00.921: Download requested: /StreamCast/Channel12187/media_w973359751_3775.ts [301.56 kbits/sec]

Jul 16 2015 12:38:01.928: Download completed: /StreamCast/Channel12187/media_w973359751_3775.ts [301.56 kbits/sec]

Jul 16 2015 12:38:01.929: New format description for track id: 2, media type soun, sub type aac

Jul 16 2015 12:38:01.930: Validation completed: /StreamCast/Channel12187/media_w973359751_3775.ts [301.56 kbits/sec]

Jul 16 2015 12:38:01.930: Size: 68244 bytes Duration: 2.0010 sec Bitrate: 272.70 kbits/sec

Here we are not able find the media_w973359751_3776.ts

Here we are not able find the media_w973359751_3776.ts

Jul 16 2015 12:38:07.681: Validation starting: /StreamCast/Channel12187/media_w973359751_3778.ts [301.56 kbits/sec]

Jul 16 2015 12:38:07.681: Download requested: /StreamCast/Channel12187/media_w973359751_3778.ts [301.56 kbits/sec]

Jul 16 2015 12:38:09.395: Download completed: /StreamCast/Channel12187/media_w973359751_3778.ts [301.56 kbits/sec]

Jul 16 2015 12:38:09.395: Processing transport stream

Jul 16 2015 12:38:09.395: New track id: 1, media type vide

Jul 16 2015 12:38:09.395: New track id: 2, media type soun

Jul 16 2015 12:38:09.395: New track id: 3, media type meta

thanks,

Raghava

2

Hi,

In your application’s LiveStreamPacketizer properties (the same section where you configured the cupertinoChunkDurationTarget property), can you also add the “maxChunkLogCount” property with an Integer value of “0”.

This will log all TS chunks created on your Wowza server and you can check in your Wowza logs when a particular TS chunk is created and becomes available.

This way you can check if the actual TS chunk requested was created (or not) on your Wowza server.

Zoran