GopInvalidData: invalid difference between gop start and end time: 0

[zarej]

I am trying to monitor encoder stats with example from here: https://github.com/appmodule/video-quality-tools#processframesencoderstatsframes

Image from debugger: https://i.imgur.com/r1SNTR7.png

Why I am alweys get invalid difference between gop start and end time: 0 ?
If you can explain me how to fix this I am eager to contribute with pull request

[zarej]

This issue occurs if HLS has multiple bitrates and in ffprobe command is not selecting stream. When I put HLS with a single bitrate it works.

Need improvement to support adaptive streams, or to put chunk playlist instead of a master playlist.

[WoZ]

Thank you for the issue!

May you provide HLS stream (master playlist, ts chunks) you've tested? I see in your screenshot from the debugger that startTime and endTime in gop is the same. So, I see 2 options:

1. the lack of adaptive bitrate may cause a merge of frames and both frames have the same pkt_pts_time
2. the stream is broken because technically it's impossible to have two frames with the same pkt_pts_time.

It will be great to provide stram data, ffprobe output for the
ffprobe -hide_banner -v info -fflags nobuffer -show_frames -show_entries frame=pkt_size,pkt_pts_time,media_type,pict_type,key_frame,width,height -i %URL%