HEVC stream Find ref with POC error with ffplay

[Wu Yongkai]

Summary of the bug:
Hi all, I'm trying to support sending the HEVC stream to SRS server by RTMP protocol. And I used ffplay to get the stream from SRS. The command is:

ffplay rtmp://192.168.1.189:1935/app/rtmpstream0

(192.168.1.189:1935/ is my SRS server IP and port)
The stream source which I send to SRS is created using the China hisiv high video embeded system. I've modified the code of ffplay to support HEVC by RTMP protocol. And I'm sure that the data from SRS is correct,but I just got the problem :[hevc @ 0xad240480] Could not find ref with POC 14
[swscaler @ 0xbbceb40] deprecated pixel format used, make sure you did set range correctly
and the video shows nothing but grey.What could make this happen?

The ffmpeg release is ffmpeg-4.1.

[Wu Yongkai]

ffplay version 4.1 Copyright (c) 2003-2018 the FFmpeg developers

built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.4)
configuration:
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100

Input #0, flv, from 'rtmp://192.168.1.189:1935/app/rtmpstream0':

Duration: N/A, start: 0.019000, bitrate: N/A

Stream #0:0: Video: hevc (Main), yuvj420p(pc, bt709), 3840x2160, 100 tbr, 1k tbn

[Steven Liu]

FLV/RTMP have not support hevc yet. there have no specification support that.

You can goto ​https://github.com/CDN-Union/H265 to find the solutions.