Very quiet XVID videos, how to normalise?

[keegs]

Hi there

I had a look around but couldn't see anything directly relating to my problem. I have gotten a few videos off a mate, and often wirelessly transfer them to my TV so I can watch em on the couch. The problem is that often the videos are extremely quiet, where on the maximum TV volume setting I barely make out the speech in the movies.

On the PC if I have my volume up all the way (and I am sitting at the desk) I can hear it OK, just, but still the audio level is nothing like other videos I have (divx, normal AVI etc).

So far the affected videos appear to be XViD ones only. I have an XViD Codec installed, and the video plays fine. I just used Gspot on them, and I noticed that both are AC3 audio, and I have "4 compatible codecs installed".

has anyone heard of this problem, or know how to fix it? do I need an updated (fixed?) version of the Xvid codec or is an AC3 thing?

Thanks!!

[hhhhbk]

how to increase AC3 volume

Windows
Control Panel
AC3

1 Open AC3 filter, at bottom uncheck "Normalize" box and raise the volume slider to max.
uncheck 3 "BSI lock" boxes and raise sliders to max.

2 Select "Mixer" tab at top, uncheck ALL boxes.

3 Select "Equalizer" tab at top. check mark "Equalizer on" box and slide all volume slides to the max.

4 Select "System" tab at top
uncheck "auto load movie configuration files"
uncheck "Use WAVEFORMATEXTENSIBLE"
check mark "Wave out" button (it's below "Direct Sound")

5 Click "OK" at bottom to save these new settings

[keegs]

Ahhh all fixed. Nice and loud now.

Thanks for that. Will have to write that procedure to memory!!!

If the video has AC3 sound but is being played on a computer does that mean it is stereo or more than stereo (5 speakers etc)? If I am playing through 2 speakers should it still come out ok? It sounds a bit strange, as if it over-amplified. Especially noticable when in loud parts of the film. I have messed around with the settings but it doesnt appear to make a difference yet..

[hhhhbk]

im not a fan of ac3 audio
iv never tried teh method of altering the soundlevels in the settings
when i turn my speakers up i get background hiss and distortion
iv never tried it myself but changing the audio level as above should correct sound levels

personally i

load the file / files into nandub using append avi segment if there is more than one
file -> save wav ->
file name ac3.ac3
file type all files

besweet to convert audio to mp3 this will take approx 3 minutes for every 20 minutes of video depends on speed of pc
then mp3 gain to normalise sound level

then i go back to nandub window,
video -> direct stream copy
audio -> vbr mp3 and select the mp3 file
file -> save as avi (give it a filename)

now you have a smaller avi with the correct volume audio

[majkol]

The solution is way easier.

Uninstall ac3, install ffdshow.
Then in the ffdshow audio decoder under volume check normalize. That's it.

[Zed8]

I have a simialar issue. I have ac3 filter and ffdshow but no interface with either. How do I get 'em?