Xvid video with very low audio...Help

[The Strokes]

I have an xvid video with a very low audio. I tried using
virtualdub to increase the volume but its not loud enough.


Format : AVI
Format/Info : Audio Video Interleave
File size : 91.5 MiB
Duration : 3mn 13s
Overall bit rate : 3 959 Kbps

Video
Format : MPEG-4 Visual
Format profile : Simple@L3
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : XVID
Codec ID/Hint : XviD
Duration : 3mn 13s
Bit rate : 3 755 Kbps
Width : 720 pixels
Height : 576 pixels
Display aspect ratio : 5/4
Frame rate : 25.000 fps
Standard : PAL
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.362
Stream size : 86.8 MiB (95%)
Writing library : ZJMedia MPEG Encoder

Audio
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : 2000
Duration : 3mn 13s
Bit rate mode : Constant
Bit rate : 192 Kbps
Channel(s) : 2 channels
Channel positions : L R
Sampling rate : 48.0 KHz
Stream size : 4.44 MiB (5%)
Alignment : Split accross interleaves
Interleave, duration : 995 ms (24.87 video frames)
Interleave, preload duration : 750 ms

[DJ Bobo]

I would demux the AC3 audio, and reencode it to MP3 using BeLight. Use at least 160kbps CBR so that you don't notice the recompression. Then mux the MP3 file back with the video. Voilà!

[Adub]

And how does that help his audio problem? If he is going to re-encode, he is going to need either a boost filter or a normalize filter. Many software programs offer them, so if you want to re-encode the audio, take a look at either Belight or BeHappy (my favorite) and use the boost/normalize functions to increase the volume.

[dat720]

eac3to can also increase the gain in ac3 tracks, plus its fast and easy!

[DJ Bobo]

@ Merlin
:confused:
And what did I say?!
BeLight boosts automatically :p

[The Strokes]

Well I used virtualdub and saved as wave tried belight wave to ac3 keeping the original 192 bitrate & 48k sample rate but the volume is low. Do I have to adjust the advance>normalize setting? I checked the Boost mode checkbox (Ligh)
How do I keep the ac3 file from clipping once I get the volume adjusted? Thanks.

[DJ Bobo]

Don't save as WAV. Just extract it as is (Use option "Demux"). BeLight automatically applies DRC and gain then. Do NOT apply boost!

[manono]

I take it it plays with low volume only on a computer. AC3 audio from retail DVDs is normalized already so I would guess it's your AC3 decoder that's at fault. Install the AC3 Filter and go into the Config. Set the Preset to Loud, or fool around with the sliders:

http://www.videohelp.com/tools/AC3_Filter