TeamNewPipe/NewPipe

[YouTube] Out of sync audio and video in download (muxing issue)

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#12,640 创建于 2025年9月17日

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 (1 评论) (0 反应) (0 负责人)Java (38,153 star) (3,577 fork)batch import
YouTubebugdownloaderhelp wanted

描述

Checklist

  • I am able to reproduce the bug with the latest version given here: CLICK THIS LINK.
  • I made sure that there are no existing issues - open or closed - which I could contribute my information to.
  • I have read the FAQ and my problem isn't listed.
  • I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
  • This issue contains only one bug.
  • I have read and understood the contribution guidelines.

Affected version

0.28.0

Steps to reproduce the bug

Download https://m.youtube.com/watch?v=sRTPiFzXxYQ in either 480p or 720p. You will see that the resulting video file has out of sync video (i.e. the video lags behind the audio). This is most likely a downlaoder muxing issue, related to #12443.

It would be good if someone who has some experience with the MP4 format (standard ISO/IEC 14496-12) could work on this.

贡献者指南

技术栈
javaandroid
领域
mobile
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。
4
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。
3-5 days
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。
fresh
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
MP4/ISO 14496-12 knowledgeJavaAndroidMedia muxing
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。
25
研究方向
Investigate the downloader muxing component in the NewPipe codebase, likely in the 'downloader' or 'extractor' modules. Examine the related issue #12443 for context. Focus on the MP4 muxing process to identify why audio and video streams become out of sync. Consider testing with the provided YouTube video at 480p or 720p.