HOW TO INCREASE AUDIO VOLUME IN A AVI FILE USING VIRTUAL DUB

[fgtan]

HOW TO INCREASE AUDIO VOLUME IN A AVI FILE USING VIRTUAL DUB, WITHOUT HAVING TO DEMU N MULTIPLEX???

THANXS

[Anonymoususer]

Ok Im not sure but you can try doing this. Load of your AVI or Mpeg in VDub . In the AUdio'sTab select Full Processing mode. Then an option Called Volume is highlighted. Clikc on Adjust Audio Of Volume Channels and raise it HIGH !. OK and Save As. Make sure your Video setting is set to Direct Stream Copy.

[bunyip]

1. Select Audio Settings.
2. Tick 'Full Processing Mode'
3. Select Audio settings again.
4. Select 'Volume'.
5. Tick 'Adjust volume' and set the desired volume with the slider control.

[fgtan]

Thanxs once more my friends!!!!

[Anonymoususer]

No pro lem moi frend...

(Spanish accent)

[pmf123]

Sorry to dig up this years old thread, but i'm wondering how to increase volume on just one of three audio channels? thanks!

[redwudz]

Drop the video file into Audacity, change the volume levels as desired, then mux back into your video with VirtualDub.
This works for most AVI type video files.

Other types/formats, demux the audio, add to Audacity, combine or 'remux' back with the original video.

[pmf123]

I just found an ffmpeg command that will pull the video and just that track, boost it by x db and save as an mp4.

Testing it now, thanks!

[sambat]

Can you post the script, I have the same issue with intrusive left and right channel levels on some TV recordings.

[pmf123]

Here's what I am using... this assumes the video is track#0 and the only audio track you want is #3 and you want to increase its volume x30 (multiples of 256):

ffmpeg -i 000.ts -map 0:0 -map 0:3 -vol 7680 000fixed.mp4

This starts with a .TS file and produces a .MP4 with the video and one audio channel

I am sure you can select many different source and destination file types.

[sambat]

I've misunderstood.
What I was looking for was not to boost the track, but to pick out the centre channel of the track boost it then use that centre channel as a new stereo track.
I've been doing this with a convoluted bat file using ffmpeg and eac3to.

Rem convert 5.1 audio track to a 6 channel wav
ffmpeg -i grimm.mpg -acodec pcm_s16le -ac 6 audio.wav
Rem convert wav to individual channels
eac3to audio.wav somefile.wavs
Rem boost centre channel
ffmpeg -i somefile.C.wav -acodec ac3 -ar 48000 -ab 128k -ac 2 -vol 2560 test.ac3
Rem create temp video with no audio
ffmpeg -i grimm.mpg -map 0:0 -vcodec copy testv.mpg
Rem combine centre channel with video
ffmpeg -i test.ac3 -i testv.mpg -acodec copy -vcodec copy grimm_.mpg
Rem cleanup
del somefile*.*
del test.ac3
del testv.mpg
del audio.wav

[pmf123]

i don't know how to pull channels from within an audio track, but i'll check out your script and see how it works. sounds interesting.

[sambat]

I think it's like the code below, the only (?) advantage to the original is that it doesn't call eac3to

Rem https://trac.ffmpeg.org/wiki/AudioChannelManipulation
Rem track 0:3 is 5.1 audio, convert to 6 channel wav
ffmpeg -i titanic.mpg -map 0:3 -c:a pcm_s16le -ac 6 titanic.wav
Rem select FC channel from 6 channels
ffmpeg -i titanic.wav -map_channel 0.0.2 front_center.wav
Rem convert FC channel to stereo ac3
ffmpeg -i front_center.wav -acodec ac3 -ar 48000 -ab 128k -ac 2 -vol 2560 front_center.ac3

[pmf123]

Id love to keep audio track 1 and just increase volume on track 3 but cant figure that one out

[sambat]

I'm assuming that it's the actual audio track you refer to - not individual channels making up the track?
This bat keeps two of three audio tracks , boosts 1 and discards 1.
I couldn't figure any other way of doing it.

Rem from ffmpeg information titanic.mpg
Rem map 0:0 is video
Rem map 0:1 is Spanish, discard
Rem map 0:2 is stereo French, keep
Rem map 0:3 is 5.1 English, keep and boost
::
Rem Demux video
ffmpeg -i titanic.mpg -map 0:0 -vcodec copy titanic_.mpg
Rem demux French audio
ffmpeg -i titanic.mpg -map 0:2 -c:a copy french.ac3
Rem convert English to 6 channel wav
ffmpeg -i titanic.mpg -map 0:3 -c:a pcm_s16le -ac 6 t3.wav
Rem convert and boost English wav to 6 channel ac3
ffmpeg -i t3.wav -acodec ac3 -ar 48000 -ab 384k -ac 6 -vol 2560 new.ac3

Rem combine video and audio; map in sequence

ffmpeg -i titanic_.mpg -i french.ac3 -i new.ac3 -map 0 -map 1 -map 2 -codec copy t3.mpg