ffmpeg

Convert HIK mp4

cd I:\Conv
dir

for %%i in (*.mp4) do "C:\ffmpeg\bin\ffmpeg" -err_detect ignore_err -i %%i -c copy %%~ni_fixed.mp4
pause


Convert and Stich
cd I:\Stich
dir

for %%i in (*.mp4) do "C:\ffmpeg\bin\ffmpeg" -err_detect ignore_err -i %%i -c copy %%~ni_fixed.mp4


:: Create File List
for %%i in (*_fixed.mp4) do echo file '%%i'>> "I:\Stich\mylist.txt"

:: Concatenate Files
"C:\ffmpeg\bin\ffmpeg"  -f concat -safe 0 -i "I:\Stich\mylist.txt" -c copy "I:\Stich\Output\output.mp4"
pause

ffmpeg -i video.mp4 -f mp3 -ab 192000 -vn music.mp3