Check the HLS Validation Results

[mekya]

Issue

There are some issues in HLS validation

• https://developer.apple.com/documentation/http_live_streaming/about_apple_s_http_live_streaming_tools
• mediastreamvalidator
• hlsreport

Short description

There are numerous warnings and errors (as usual with ffmpeg HLS output), but the “passthrough” rendition is the most problematic one I’d say, and will probably cause issues in players

• target duration different from other playlists
• target duration below the actual duration of segments

Environment

• Operating system and version: Ubuntu 18.04
• Java version: 11
• Ant Media Server version: 2.4.1

Steps to reproduce

1. Add several adaptive bitrates
2. Publish stream through OBS with default settings
3. Validate the HLS Output with the tools above

Expected behavior

There should not be any varying issues. validation_data_illegal_change_in_tag_data_loss.html.zip validation_data.html.zip

Actual behavior

Varying durations and target durations in variant playlists, which can cause interoperability issues in the player