bytedeco/javacv

CvCapture_MSMF::initStream Failed to reset streams

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#1,486 opened on Aug 7, 2020

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Description

My device has multiple cameras, identified by camera IDs. VideoCapture videoCapture = new VideoCapture(WEBCAM_DEVICE_INDEX); Although they can be started, they start up very slow. It usually takes about 20 seconds in total.

These error CvCapture_MSMF::initStream Failed to reset streams will be reported 6-7 times.

Also the LED light next to my camera will flash.

Contributor guide

Research direction
Examine the JavaCV source code for the MSMF backend, particularly the CvCapture MSMF::initStream method, to understand why resetting streams fails. Investigate how camera indices are handled and check for possible race conditions or device enumeration issues. Consider testing with a simpler camera setup to isolate the problem.
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.
1-3 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
JavaOpenCV basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60