How to completely remove audio channels from video

Question

Telegram displays soundless MP4s as GIFs.
How can I completely remove audio from my MP4 files? I tried Filmora but it only detaches audio. While exporting it still includes silenced audio channels.

Solution 1

Using FFmpeg its really simple:

ffmpeg -i videoAndAudio.mp4 -c copy -an onlyVideo.mp4

-i path/to/input_file: give the path to your file

-c copy: tell FFmpeg to copy codecs (prevent transcoding)

-an: disables audio

Solution 2

As ffmpeg alternative, use Virtual dub:

• open the target file
• set video to 'direct stream copy'
• set audio to none
• save as new file

The process should be almost as fast as a direct file copy.