写了个批处理,试了很多次,只要路径没有英文名或奇怪字符都能正常使用
@ECHOOFF
color f0
CD/D "%~dp0"
:loop
IF "%~1"=="" GOTO :STOP
ffmpeg -i "%~1" -f wav - | neroAacEnc.exe -br 32000 -hev2 -if - -ignorelength -of "%~dpn1_audio.m4a"
shift/1
goto :loop
:stop
但是,当-br 32000 -hev2 -if - -ignorelength -of "%~dpn1_audio.m4a"这里加上2pass变成
-br 32000 -2pass -hev2 -if - -ignorelength -of "%~dpn1_audio.m4a"之后,就会显示：
Stream mapping:
Stream
#0.1 -> #
0.0
Press [q] to stop encoding
av_interleaved_write_frame(): Operation not permitted
求问如何编写才能2pass

用q 0.15，没必要2pass

Note that two-pass more requires a physical file as input, rather than stdin.
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So 出个中间wav文件算了