[Stress]Video freeze when using VLC and FFPLAY to playback the streaming SVT-HEVC clip with DASH

[liweki]

Describe the bug
While using local stream as input to do SVT-HEVC transcoding with ffmpeg, and config output as streaming with DASH, then use VLC or FFPLAY to playback the generated segment file index.mpd, we found video freeze after playing some time with VLC or FFPLAY.

We tried 3 times with VLC about this issue：
1st time used about 3 minutes
2nd time used about 5 minutes
3rd time used about 5+ hours

While the issue happened, both VLC and FFPLAY print error info in terminal, please see below pictures for detail.
VLC error info:

FFPLAY error info:

To Reproduce
Steps to reproduce the behavior:

1. Setup the test environment based on the guide.
2. Run below command line to do transcoding to SVT-HEVC (make sure add parameter "-stream_loop -1" to loop input stream):
   ffmpeg -re -stream_loop -1 -i Nature.mp4 -s 40962160 -c:a copy -c:v libsvt_hevc -b:v 20M -f flv rtmp://nginx_ip1/dash/4kCamera -s 40962160 -c:a copy -c:v libsvt_hevc -f flv rtmp://nginx_ip2/dash/2kCamera
3. Run below command to use VLC and FFPLAY playback:
   ffplay http://host_ip:port_ID/dash/4kCamera/index.mpd
   vlc http://host_ip:port_ID/dash/4kCamera/index.mpd

Expected behavior
Video playback should be smooth, no freeze and no error.

[TangZhiZhen]

it looks like svt-hevc issue, will submit issue into svt-hevc.

[chuchenyan]

@TangZhiZhen , what's the status? please add SVT-HEVC link here.

[xinglongx]

still exist in the lastest code.
commit id: 9512773