increase volume

[loa909]

I have a short video clip .avi but the volume on it is very low, what tools do i use to extract audio then what tool to increase volume, then how do i join audio back to video again

[Baldrick]

Extract the audio with for example Virtualdubmod(under Streams) or Pazera Free Audio Extractor.
Increase the volume in for example audacity, goldwave, etc. Save as a new mp3.
Multiplex back the video with new audio with virtualdubmod.


Or use Xmedia recode, open avi, choose Format: avi, under the Video tab choose Mode: Copy, under the Audio tab choose Codec: MP3, Volume Correction, Volume change(%) and try 150, click Add to Queue and last Encode!

[hech54]

Or:
https://forum.videohelp.com/threads/370791-Question-about-reprocessing-the-audio-of-a-v...=1#post2380115

[loa909]

Extract the audio with for example Virtualdubmod(under Streams) or Pazera Free Audio Extractor.
Increase the volume in for example audacity, goldwave, etc. Save as a new mp3.
Multiplex back the video with new audio with virtualdubmod.


Or use Xmedia recode, open avi, choose Format: avi, under the Video tab choose Mode: Copy, under the Audio tab choose Codec: MP3, Volume Correction, Volume change(%) and try 150, click Add to Queue and last Encode!

Ok will give this a go first, see whats best or try what hech54 says.

many thanks to you both

[pandy]

You may use ffmpeg to do this on the fly.
For example by using this filter: http://ffmpeg.org/ffmpeg-filters.html#dynaudnorm (but there is many similar approaches).

[loa909]

You may use ffmpeg to do this on the fly.
For example by using this filter: http://ffmpeg.org/ffmpeg-filters.html#dynaudnorm (but there is many similar approaches).

I dont have a clue how to set up this ffmpeg or the filter do you have a tutorial

how do you even download the 6.38 dynaudnorm and add it to ffmpeg

[pandy]

At first look at: http://trac.ffmpeg.org/wiki/Encode/MP3

dynaudnorm is already in ffmpeg so all you need is to call this filter with some parameters.

ffmpeg -i %1 -c:v copy -c:a libmp3lame -b:a 256k -af "dynaudnorm=m=50.0:b=1:s=25.0"  -f avi %1_.avi

Hope it will work directly but sorry if not - had no time to test it.

[jagabo]

Extract the audio with for example Virtualdubmod(under Streams) or Pazera Free Audio Extractor.
Increase the volume in for example audacity, goldwave, etc. Save as a new mp3.
Multiplex back the video with new audio with virtualdubmod.


Or use Xmedia recode, open avi, choose Format: avi, under the Video tab choose Mode: Copy, under the Audio tab choose Codec: MP3, Volume Correction, Volume change(%) and try 150, click Add to Queue and last Encode!

Ok will give this a go first, see whats best or try what hech54 says.

many thanks to you both

If your audio is mono or stereo, you can use VirtualDub (not VirtualDubMod) to adjust the audio. Set Video -> Direct Stream Copy (so video is not changed), then use VirtualDub's audio filtering tools to increase the volume and recompress.

[theewizard]

Just use aviDemux
Choose copy video
Choose mp3 audio
Choose filter on audio, increase , set number of db increase
Output format avi
Save