mediastreamvalidator complaints about sourcestream frame rate

Wowza Streaming Engine
1

Hi, I’m testing Wowza 4.3.0 for live streaming service.

To prepare for Apple review, I’ve checked my HLS playback stream by Apple Media Tool(mediastreamvalidator), and got the result as follows.

ERROR>

ERROR: (-1) Failed to match track frame rate to common frame rates

–> Framerate: 27.7179

WARNINGS>

WARN

#EXT-X-ALLOW-CACHE has been deprecated

–> Line: #EXT-X-ALLOW-CACHE:NO

WARN

extra characters at end of line

–> Line: #EXT-X-ALLOW-CACHE:NO

My environment details:

  • Broadcasting client: OBS(Open Broadcaster Software) 0.11.1 by default settings (H.264/AAC)

  • source frame rate : 29.97

  • Wowza Input protocol: RTMP

  • Wowza Output protocol: HLS

  • Wowza Transcode options

  • Video: H.264/800000 bps/default encoding impl./Baseline profile/30, 60 or 90 key frame interval

  • Frame: letterbox/1280x720/no crop

  • Audio: AAC/64000 bps

  • No overlay image

  • HLS options (cupertino streaming packetizer)

  • cupertinoBitrateAdjustmentFactor: 110

  • cupertinoCalculateCodecs : false

  • cupertinoPacketizeAllStreamsAsTS : true

  • httpOriginMode : on

  • Apple Media Tool
  • mediastreamvalidator: Beta Version 1.1(150923)

As I know, ERROR must fix before IOS provisioning.

How can I solve this errors?

Regards,

Jingene

2

Hello there.

Make sure you are testing a rendition from the Transcoder and not the source stream itself. And you might try setting template /KeyFrameInterval /FollowSource to “false”, so the /Interval setting (default is 60) is used.

Regards,

Salvadore