bytedeco/javacv

How to Implement Transcoding-only Audio in javacv ffmpeg Conversion

Open

#1,125 opened on Jan 18, 2019

View on GitHub
 (2 comments) (0 reactions) (0 assignees)Java (1,583 forks)batch import
enhancementhelp wanted

Repository metrics

Stars
 (6,985 stars)
PR merge metrics
 (No merged PRs in 30d)

Description

If both audio and image are coded and decoded, the CPU occupies too much. It is desirable to choose only coded and decoded audio, and the image is directly pushed forward. Is there any good way?

Contributor guide

Research direction
Investigate how to set FFmpeg options in javacv to copy the video stream and re encode only the audio stream. Look at FFmpegFrameRecorder and its options like 'videoCodec' set to 'copy' and audioCodec set to desired codec. Test with a sample program.
Tech stack
java
Domain
backend
Issue type
Feature
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.
Mostly clear
Prerequisites
JavaGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60