How do I go about removing the audio track(s) from video files? I have tried it by disabling the audio track, but for some reason the resulting file ends up being about four times bigger than the original.
1. If you just want to remove one or more audio streams from a container I'd use MKVToolNix GUI.
2. The latest ADM nightly build had no problems extracting just the video stream: Copy / Copy / Video Only. However the steam is in the raw format and some video editors may not accept them. (Vegas wouldn't.)
3. You can easily do this using FFMPEG using a command line in this format:
ffmpeg -i input.mp4 -c:v copy -an output.m4v
Where:
-i specifies the input clip.
-c:v copy copies the first video stream without recompression.
-an indicates no audio stream is to be included.
output.m4v is the output filename/container format.
Vegas accepted the m4v.
(https://dl.dropbox.com/s/dqokb7j8ec4ej2l/Video_extraction.jpg)
You can see the sizes are almost the same. Only the original MP4 has an audio stream.
Dan.
Quote from: Gandalf on January 18, 2019, 05:36:57 PM
for some reason the resulting file ends up being about four times bigger than the original.
Most likely you have re-encoded the video instead of using the copy mode.