ffmpeg FLAC 24位96khz至16位48khz [英] ffmpeg FLAC 24 bit 96khz to 16 bit 48khz

问题描述

试图弄清楚ffmpeg，目前正致力于将24bit/96khz FLAC文件转换为16bit/48khz.

Trying to figure out ffmpeg, currently working on getting 24bit/96khz FLAC files into 16bit/48khz.

推荐答案

基本示例

ffmpeg -i input.flac -sample_fmt s16 -ar 48000 output.flac

• 列出示例格式:ffmpeg -sample_fmts
• 列出其他flac编码选项:ffmpeg -h encoder=flac
• List sample formats: ffmpeg -sample_fmts
• List additional flac encoding options: ffmpeg -h encoder=flac

ffmpeg -i input.flac -af aresample=out_sample_fmt=s16:out_sample_rate=48000 output.flac

这两个示例都将产生相同的输出:您可以使用哈希复用器.

Either example will result in the same output: you can verify with the hash muxer.

有关可用的抖动方法和其他重采样选项的列表，请参见 -dither_method选项. .示例:

See the -dither_method option for a list of available dithering methods and additional resampling options. Example:

ffmpeg -i input.flac -dither_method triangular_hp -sample_fmt s16 -ar 48000 output.flac

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SoX重采样器

FFmpeg支持两个重采样器:默认的swresample库和外部 SoX重采样器(soxr)

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SoX resampler

FFmpeg supports two resamplers: the default swresample library, and the external SoX resampler (soxr).

要使用soxr，您的ffmpeg必须使用--enable-libsoxr进行编译.然后使用-resampler选项选择它:

To use soxr your ffmpeg must be compiled with --enable-libsoxr. Then choose it with the -resampler option:

ffmpeg -i input.flac -resampler soxr -sample_fmt s16 -ar 48000 output.flac

或使用 aresample 过滤器来完成所有操作:

Or use the aresample filter to do it all:

ffmpeg -i input.flac -af aresample=resampler=soxr:out_sample_fmt=s16:out_sample_rate=48000 output.flac

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更多信息

• FFmpeg重采样器文档

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More info

• FFmpeg Resampler Documentation

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