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Jhuster avatar Jhuster commented on July 20, 2024 1

@yizuochengchi pcm 混音,需要保证采样率、通道数等参数一致,如果不一致,则需要以其中一个为标准,转换为一致。
混音算法,可以参考这篇文章:http://blog.csdn.net/momo0853/article/details/50509790

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Jhuster avatar Jhuster commented on July 20, 2024

pcm -> aac,用 mediacodec 硬编,或者用 fdk-aac 软编

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CodeK1988 avatar CodeK1988 commented on July 20, 2024

嗯 谢谢你的建议 我现在通过ffmpeg pcm 转 aac ,aac 转pcm 都可以了。我现在遇到一个问题。多段pcm 指定位置插入 一段背景音中 aac(格式) 中 我用ffmpeg 没办法 直接对pcm 进行混合 或者说 我没找到命令行。我尝试着 将多段pcm 转码 aac 这个过程是很快的 但是 多段aac指定位置混合 一段完整的aac 是比较耗时的 请问有什么好的解决方法 或者建议吗? 再次谢过,

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nicech6 avatar nicech6 commented on July 20, 2024

@yizuochengchi ffmpeg怎么把pcm和aac互转啊 命令是什么

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