Windows中的递归ffmpeg批处理脚本

Question

彻底改变问题！

我现在有以下脚本：

@echo off
REM keep a counter for files converted
set /A nfile=0
REM do not copy empty folders or any files
@echo Copying directory structure from %0 to %1 ...
xcopy /T %1 %2
REM walk directory structure and convert each file in quiet mode
for /R %1 %%v in (*.mp4, *.aac, *.flv, *.m4a, *.mp3) do (
    echo converting "%%~nxv" ...
    ffmpeg -v quiet -i "%%v" -vcodec libx264 "%2\%%~nv-converted.mp4"
    set /A nfile+=1
)
echo Done! Converted %nfile% file(s)

取自：http://mostlybuggy.wordpress.com/2012/09/25/windows-batch-file-how-to-copy-and-convert-folders-recursively-with-ffmpeg/

当我运行以下命令时，视频正在按预期转换：

convert ..\..\folder ..\..\converted\

但是，转换后的文件最终会出现在“已转换”中，而不是在它们各自的子文件夹中。

有什么想法吗？

Answer 1

您需要将每个源文件的相对路径合并到您的目标中。如果您希望脚本是防弹的，这并非易事。

下面未经测试的代码使用批处理函数来确定字符串的长度。 There are many techniques for computing string length in batch.

一旦知道了根源路径的长度，就很容易对源文件的全路径进行子串操作，得到相对路径。

@echo off
setlocal disableDelayedExpansion

REM get absolute path of source and destination roots
for %%F in ("%~1\x") do set "src=%%~dpF"
for %%F in ("%~2\x") do set "dst=%%~dpF"

REM get length of root source path
call :strlen src srcLen

REM keep a counter for files converted
set /A nfile=0
REM do not copy empty folders or any files
@echo Copying directory structure from %1 to %2 ...
xcopy /T "%src%\." "%dst%\."

REM walk directory structure and convert each file in quiet mode
for /R "%src%" %%F in (*.mp4, *.aac, *.flv, *.m4a, *.mp3) do (
  set "file=%%~fF"
  set "file2=%%~dpnF"
  echo converting "%%~nxF" ...
  setlocal enableDelayedExpansion
  ffmpeg -v quiet -i "!file!" -vcodec libx264 "!dst!!file2:~%srcLen%!-converted.mp4"
  endlocal
  set /A nfile+=1
)
echo Done! Converted %nfile% file(s)
exit /b


:strlen  strVar  [rtnVar]
setlocal EnableDelayedExpansion
set "s=!%~1!#"
set "len=0"
for %%P in (4096 2048 1024 512 256 128 64 32 16 8 4 2 1) do (
  if "!s:~%%P,1!" NEQ "" (
    set /a "len+=%%P"
    set "s=!s:~%%P!"
  )
)
(
  endlocal
  if "%~2" equ "" (echo %len%) else set "%~2=%len%"
  exit /b
)

如果您有两个未分配的驱动器号可以映射到您的根源文件夹和目标文件夹，那么有一个非常简单的解决方案。这将允许您使用完整的绝对路径（没有驱动器号）。我假设 X: 和 Y: 可用

@echo off
setlocal disableDelayedExpansion

REM map unused drive letters to source and destination
for %%F in ("%~1\.") do subst x: "%%~fF"
for %%F in ("%~2\.") do subst y: "%%~fF"

REM keep a counter for files converted
set /A nfile=0
REM do not copy empty folders or any files
@echo Copying directory structure from %1 to %2 ...
xcopy /T x:\ y:\

REM walk directory structure and convert each file in quiet mode
for /R x:\ %%F in (*.mp4, *.aac, *.flv, *.m4a, *.mp3) do (
  echo converting "%%~nxF" ...
  ffmpeg -v quiet -i "%%F" -vcodec libx264 "y:%%~pnF-converted.mp4"
  set /A nfile+=1
)
echo Done! Converted %nfile% file(s)
exit /b

REM release mapped drive letters
subst /d x:
subst /d y:

Answer 2

试试这个：

@echo off &setlocal
set /a nfile=0
echo Copying directory structure from %1 to %2 ...
xcopy /T "%~1" "%~2"
REM walk directory structure and convert each file in quiet mode
set "sourcefolder=%~1"
set "targetfolder=%~2"
for /R "%sourcefolder%" %%a in (*.mp4 *.aac *.flv *.m4a *.mp3) do (
    echo converting "%%~nxa" ...
    set "sourcefile=%%~fa"
    set "sourcepath=%%~dpa"
    set "targetfile=%%~na-converted.mp4"
    setlocal enabledelayedexpansion
    set "targetfolder=%targetfolder%!sourcepath:%sourcefolder%=!"
    ffmpeg -v quiet -i "!sourcefile!" -vcodec libx264 "!targetfolder!!targetfile!"
    endlocal
    set /A nfile+=1
)
echo Done! Converted %nfile% file(s)