Options to increase the audio volume on .avi or mpg4 files?

krs · Aug 31st, 2008, 12:19 PM

Thanks for the suggestion MM but I don't think that will work.
Whenever I convert using VisualHub, VH automatically uses audio track 1 and ignores audio track 2 (which is the one I need).

VH will allow you to increase the volume and that works fine, Streamclip also lets you increase the volume and that worked fine on the old version I had but for some reason I got no audio at all when I did the conversion with the latest release. But it also only picks up track 1 and ignores track 2.
ffmpegX is the only software so far that lets you chose the audio track you want to convert, starts the numbering with 0 instead of 1, however with ffmpegX increasing the audio level doesn't work. I found out from the ffmpegX forum that this is actually a bug in ffmpegX.
I really wanted to avoid going through two conversions because the video quality suffers each time but I may have to.
What should work is to use ffmpegX to encode the file with audio track 2 and then use VH to boost the volume.

But I came across another thread last night where one can supposedly add some code somewhere on VH to get VH to select audio track 2 when encoding. I'll see if I can find that again and figure out what to do.
If that works and I can somehow force VH to pick audio track 2 I might be all set.

MACenstein'sMonster · Sep 1st, 2008, 01:00 AM

Please be sure to post back here with the final verdict.

As frustrating as this stuff can be I found there's an addictive problem solving element to it too. Keeps some of us locked on far longer than others are willing to tolerate.

Vexel · Sep 1st, 2008, 04:58 AM

Have you tried Quicktime Pro? I'm pretty sure that will allow you to adjust track volumes.

chas_m · Sep 1st, 2008, 06:51 AM

Simple solution:

DEMUX the audio(s) and the video. Take the resulting audio file(s) into the audio editor of your choice, raise the volume.

REMUX the two tracks back together.

Voila.

Ottawaman · Sep 1st, 2008, 10:42 AM

	Quote:			Originally Posted by Vexel
	Have you tried Quicktime Pro? I'm pretty sure that will allow you to adjust track volumes.

Yes it does.

krs · Sep 1st, 2008, 11:19 AM

	Quote:			Originally Posted by chas_m
	Simple solution: DEMUX the audio(s) and the video. Take the resulting audio file(s) into the audio editor of your choice, raise the volume. REMUX the two tracks back together. Voila.

More steps than I really wanted to go through, buy hey - beggars can't be choosers.

But please give me a hint which software to use to demux the avi file.

In Streamclip the demux option is grayed out, ffmpegX will only demux MPG and VOB files and Visual Hub doesn't seem to have a demux option.

And QT Pro requires a few dollars which I didn't really want to spend for just a one-time use of that software

Sep 1st, 2008, 04:58 AM	#13
Vexel Digital DJ Join Date: Jan 2005 Location: Sydney, Nova Scotia Posts: 5,284	Have you tried Quicktime Pro? I'm pretty sure that will allow you to adjust track volumes. __________________ 2.0Ghz '09 Mac Mini www.radioaddix.net

Sep 1st, 2008, 06:51 AM	#14
chas_m Honourable Citizen Join Date: Dec 2007 Location: Victoria BC Posts: 11,323	Simple solution: DEMUX the audio(s) and the video. Take the resulting audio file(s) into the audio editor of your choice, raise the volume. REMUX the two tracks back together. Voila. __________________ Cheers chas_m Evangelist, ACDSee Pro for Mac: Get the beta! Join the community! Help us build the next great Mac photo manager! Our life in Victoria BC • Music blog • My Podcast • Film blog Victoria Macintosh Users Group

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Aug 31st, 2008, 12:19 PM	#11
krs Honourable Citizen Join Date: Mar 2005 Location: Belleville, Ontario Posts: 5,973	Thanks for the suggestion MM but I don't think that will work. Whenever I convert using VisualHub, VH automatically uses audio track 1 and ignores audio track 2 (which is the one I need). VH will allow you to increase the volume and that works fine, Streamclip also lets you increase the volume and that worked fine on the old version I had but for some reason I got no audio at all when I did the conversion with the latest release. But it also only picks up track 1 and ignores track 2. ffmpegX is the only software so far that lets you chose the audio track you want to convert, starts the numbering with 0 instead of 1, however with ffmpegX increasing the audio level doesn't work. I found out from the ffmpegX forum that this is actually a bug in ffmpegX. I really wanted to avoid going through two conversions because the video quality suffers each time but I may have to. What should work is to use ffmpegX to encode the file with audio track 2 and then use VH to boost the volume. But I came across another thread last night where one can supposedly add some code somewhere on VH to get VH to select audio track 2 when encoding. I'll see if I can find that again and figure out what to do. If that works and I can somehow force VH to pick audio track 2 I might be all set.

Sep 1st, 2008, 01:00 AM	#12
MACenstein'sMonster Full Citizen Join Date: Aug 2008 Location: Saskadoom Posts: 918	Please be sure to post back here with the final verdict. As frustrating as this stuff can be I found there's an addictive problem solving element to it too. Keeps some of us locked on far longer than others are willing to tolerate.