批处理：遍历文件夹和子文件夹并将其放入脚本

Question

我想使用ffmpeg将.flac文件从X:\\Music\\flac\\flacfolder\\name.flac为X:\\Music\\mp3\\flacfolder\\name.mp3 ，但在传递目录时找不到循环方法到另一个命令并进行操作。

Answer 1

Usually, to process files recursively, I would suggest to use the for /R loop . However, in this situation, since I guess you want to copy the directory hierarchy from the source to the target folder, I do not use it, because it resolves to absolute paths only. Instead I use xcopy /L , which does not copy anything (due to /L ), but lists all applicable items as paths relative to the source folder; then I wrap around a for /F loop to read the list of relative paths and to resolve them related to the target folder; in the loop body finally, the ffmpeg needs to be placed (define the options to your needs and remove the preceding upper-case ECHO after having tested; the ffmpeg tool does not receive any relative paths but absolute ones only for both input and output files):

@echo off
setlocal EnableExtensions DisableDelayedExpansion

rem // Define constants here:
set "_SOURCE=X:\Music\flac\flacfolder" & rem // (absolute source path)
set "_TARGET=X:\Music\mp3\flacfolder"  & rem // (absolute target path)
set "_PATTERN=*.flac" & rem // (pure file pattern for input files)
set "_FILEEXT=.mp3"   & rem // (pure file extension of output files)

pushd "%_TARGET%" || exit /B 1
for /F "delims=" %%F in ('
    cd /D "%_SOURCE%" ^&^& ^(rem/ list but do not copy: ^
        ^& xcopy /L /S /Y /I ".\%_PATTERN%" "%_TARGET%" ^
        ^| find ".\" ^& rem/ remove summary line;
    ^)
') do (
    2> nul mkdir "%%~dpF."
    rem // Set up the correct `ffmpeg` command line here:
    ECHO ffmpeg -i "%_SOURCE%\%%~F" "%%~dpnF%_FILEEXT%"
)
popd

endlocal
exit /B

---

If you want the destination files in a flat folder structure instead, a for /R loop workes fine:

@echo off
setlocal EnableExtensions DisableDelayedExpansion

rem // Define constants here:
set "_SOURCE=X:\Music\flac\flacfolder" & rem // (absolute source path)
set "_TARGET=X:\Music\mp3\flacfolder"  & rem // (absolute target path)
set "_PATTERN=*.flac" & rem // (pure file pattern for input files)
set "_FILEEXT=.mp3"   & rem // (pure file extension of output files)

for /R "%_SOURCE%" %%F in ("%_PATTERN%") do (
    rem // Set up the correct `ffmpeg` command line here:
    ECHO ffmpeg -i "%_SOURCE%\%%~F" "%_TARGET%\%%~nF%_FILEEXT%"
)

endlocal
exit /B

Answer 2

I have an example I used in the past. I tried adding your structure to it.

@echo off
cd X:\Music\flac\flacfolder

for /F "tokens=1 delims=" %%i IN ('dir /s /b ^| findstr .flac') do (
  call :process_code "%%i"
)

goto end


:process_code
echo Running conversion for %1
:: Run your process here

goto :eof

:end

echo done!

I hope this helps

Answer 3

Try something like:

@echo off
setlocal
set FLAC_FOLDER=c:\temp\flacfolder
set MP3_ROOT_FOLDER=c:\temp\mp3folder
echo Processing folder [%FLAC_FOLDER%]...
for /f "tokens=*" %%F in ('dir "%FLAC_FOLDER%\*.flac" /a-d /b') do call :PROCESS_FLAC_FILE "%FLAC_FOLDER%" "%%F"
goto END

:PROCESS_FLAC_FILE
set PFF_FOLDER=%1
set PFF_FILE=%2
set PFF_FOLDER=%PFF_FOLDER:"=%
set PFF_FILE=%PFF_FILE:"=%
for /f %%I in ("%PFF_FILE%") do set PFF_MP3_FILE=%%~nI.mp3
echo Processing FLAC file [%PFF_FILE%] in folder [%PFF_FOLDER%]; output file is [%PFF_MP3_FILE%]...

REM Now call ffmpeg using the approriate variables.  Enclose the variables in double-quotes, e.g.:
REM (note, I don't know the syntax for ffmpeg, so I'm making this up as an example)

ffmpeg.exe -source "%PFF_FOLDER%\%PFF_FILE%" -target "%MP3_ROOT_FOLDER%\%PFF_MP3_FILE%"

goto END

:END