bytedeco/javacv

avformat_write_header error() error -22: Could not write header to 'null'

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#1,501 opened on Sep 8, 2020

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Description

hello: When I deploy the service to a Linux system, the following error occurs: org.bytedeco.javacv.FrameRecorder$Exception: avformat_write_header error() error -22: Could not write header to 'null' at com.junction.entity.FFmpegFrameRecorder.startUnsafe(FFmpegFrameRecorder.java:946) at com.junction.entity.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:425) at com.junction.entity.FFmpegFrameRecorder.start(FFmpegFrameRecorder.java:420) at com.junction.entity.RtmpPush.push(RtmpPush.java:191) at com.junction.entity.RtmpPush.push(RtmpPush.java:304) at com.junction.entity.RealPlay.run(RealPlay.java:225)

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Research direction
Inspect why the output URL is 'null' in the FFmpegFrameRecorder setup. Check the configuration for the output path and ensure that FFmpeg is properly installed and accessible on the Linux system.
Tech stack
java
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
JavaLinux
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60