Windows CMD 批处理脚本 FFmpeg

Question

I have created a batch file (.bat) that uses FFmpeg to transcode various videos (with *.mov or *.mp4 file name extension) from an input folder to an output folder (with extension *.mkv) as batch process (Windows 10 environment). File names (without extension) from the input folder should be copied to the newly created output file names (that have the new file extension *.mkv).

@echo off

set CMD=ffmpeg -c:v ffv1 -level 3 -g 1 -coder 1 -context 1 -pix_fmt + -slices 24 -slicecrc 1 -report -c:a pcm_s24le

FOR /R input_folder %%G IN (*.mov,*.mp4) DO (
   echo %%G
   call set outputfile=%%~nG%.mkv
   call set inputfile=%%~nG%%~xG
   echo %CMD% -y output_folder/%outputfile% -i %inputfile%
)

But this script does not work as expected, ie nothing happens. Do you perhaps have an idea how to fix this? Thanks in advance!

Answer 1

Here's an example showing my suggestions from the comments, with the addition of the file deletion as requested in the comments too. This assumes that ffmpeg returns an errorlevel of 0 upon success, (you don't want to delete them if the processing failed), and that there is an existing directory named output_folder , in the current working directory.

@Echo Off
SetLocal EnableExtensions
Set "CMD=ffmpeg.exe -c:v ffv1 -level 3 -g 1 -coder 1 -context 1 -pix_fmt +"
Set "CMD=%CMD% -slices 24 -slicecrc 1 -report -c:a pcm_s24le"

For /R "input_folder" %%G In (*.mov *.mp4) Do (
    Echo %%G
    %CMD% -y "output_folder\%%~nG.mkv" -i "%%G"
    If Not ErrorLevel 1 Del /A /F "%%G"
)