Increase volume in video using ffmpeg 2

20 Ιουνίου 2020  στο Μη κατηγοριοποιημένο  επισημασμένο με ετικέτα audio / boost / ffmpeg / loud / video / volume Από Tux

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A quick note on how to boost the audio stream in a video using the volume filter in ffmpeg

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#;For newer versions of ffmpeg ffmpeg -i input.mkv -filter:a "volume=4.0" output.mkv; #For older versions of ffmpeg (we use multiples of 256) ffmpeg -i input.mkv -vol 1024 -vcodec copy output.mkv;

Using the above command we were able to make the audio LOUDER!

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ffmpeg: Cut out a part of a video

Following is a snippet we used to remove a few seconds from a video using ffmpeg ffmpeg -i 'input.mkv' -filter_complex \ "[0:v]trim=end=553,setpts=N/FRAME_RATE/TB[v0]; \ [0:a]atrim=end=553,asetpts=N/SR/TB[a0]; \ [0:v]trim=start=559,setpts=N/FRAME_RATE/TB[v1]; \ [0:a]atrim=start=559,asetpts=N/SR/TB[a1]; \ [v0][a0][v1][a1]concat=n=2:v=1:a=1[v][a]" \ -map "[v]" -map "[a]" 'output.mkv' Specifically, we removed the seconds 09:13 (second 553) to 09:19 (second 559).

15 Νοεμβρίου 2020

σε "Applications"

ffmpeg: Remove audio from several videos while preserving quality

To create audio-less copies of all the .mp4 videos in a folder, execute the following: For a single file, the command would be:

18 Αυγούστου 2020

σε "Bash"

How to create a video from an audio file and an image using ffmpeg

Recently, we had this audio file ( mp3) that we wanted to upload to youtube.com. As it is known, youtube does not allow uploading audio files. Taking that into consideration we had to create a video with a static image just to upload the audio file to youtube. To do…

3 Νοεμβρίου 2018

σε "Applications"

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