bytedeco/javacv

FFmpegFrameRecorder how to record each frame from RTMP streams of dynamic frames

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#2,219 opened on Apr 23, 2024

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Description

the rtmp streams some time 20fps , some time 30fps，My application uses JavaCV to pull the RTMP stream and process each frame, and also saves it to the local video to record the processing of frames X to Y. Due to the dynamic frame rate, the video I save with the recorder has a fixed frame rate, which may result in some frames being lost, making it impossible to accurately locate the frames

Contributor guide

Research direction
Investigate FFmpegFrameRecorder's handling of variable frame rates. Consider setting the frame rate dynamically based on input stream timestamps or using a constant frame rate and adjusting frame duplicates/drops to match desired output parameters.
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.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Needs investigation
Prerequisites
JavaJavaCV
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40