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• FFMPEG pipe input filenames from command line on windows

  6 novembre 2019, par Andrew Harris

  I am concatenating a bunch of files on a windows 10 box into a single file using "ffmpeg -f concat -safe 0 -i list.txt -c copy output.mp4". This works fine when I generate list.txt in the required format.

  What I am wanting is to not have to generate the file first and instead pipe the filenames in as the examples here show for *nix.

  I have tried as follows "ffmpeg -f concat safe 0 -i <(for %i in (*.ts) do @echo file ’%i’) -c copy output.mp4" but I get "The system cannot find the file specified.".

  Any idea’s how to make this work ?

• Windows CMD Batch Script FFmpeg

  1er mars 2021, par Tobias

  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).&#xA;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).

  &#xA;

  @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%
)


  &#xA;

  But this script does not work as expected, i.e. nothing happens.&#xA;Do you perhaps have an idea how to fix this ?&#xA;Thanks in advance !

  &#xA;

• How to save video recording(webcam) and screen recording to directly Mp4 in windows ?

  10 juillet 2019, par SaddamBinSyed

  I have an applicaiton which running as a windows service which is responsible for Recording the video/audio and screen capture as well.

  now I am using DirectX lib and Aforge dll to save recorded file to AVI format which is not supported by HTML 5 so I am then converting the same to mp4 using NVideoConverter dll.

  now I am facing high CPU utilization (30% -recording service) FFmpeg (30% conversion task).

  So I wanting a solution/method to directly record as an MP4 format to get rid of conversion part as well as CPU utilization.

  I couldn’t use FFmpeg directly to the record since when user logoff/signout the current recording will get corrupted.

  So How can I record as an Mp4 in windows 7 and 10 ?

  also, I came across that win10 default camera application is saving the recording directly as Mp4 file which is playing well in both IE and chrome.

  so it means there is a way in windows 10.

  If anyone implemented/knows about the same please advise me.

  help highly appreciated.

  thanks.