bytedeco/javacv

Lossless conversion from an image to a video

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#2,322 创建于 2025年3月8日

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 (13 评论) (0 反应) (0 负责人)Java (6,985 star) (1,583 fork)batch import
help wantedquestion

描述

I'm trying to convert an image to a video using the following settings:

  recorder.videoCodec = avcodec.AV_CODEC_ID_FFV1
  recorder.pixelFormat = AV_PIX_FMT_RGB24;
  recorder.videoCodecName = "libx264rgb";
  recorder.videoQuality = 0.0;
  recorder.format = "avi"
  recorder.frameRate = 1.0
  recorder.videoBitrate = 2000000

The result came out is blurry and have different colours compare to the original image. The original image is a JPEG with RGB colour format, its size is about 67KB. May anyone suggest why this is the case? Thanks in advance

贡献者指南

技术栈
java
领域
backenddata
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
active
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
JavaFFmpeg basicsvideo encoding
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
40
研究方向
Investigate the interaction between pixel format RGB24 and the chosen codecs (FFV1, libx264rgb). Check the FFmpeg documentation for color space conversion and the default settings in JavaCV's recorder. Compare the output video frame to the original image to identify color shifts and blurring. Look at the JavaCV issue comments for suggested fixes or workarounds.