Convert AVI with H264 and AC3 to AVI with XVid and AC3

[ashwin.terminator]

I've a downloaded file with the following properties as reported by Mediainfo:

General
Complete name : C:\Documents and Settings\Karthik & Ashwin\My Documents\Movies\Phir Milenge {www.desibbrg.com ~ Da Xclusives\Phir Milenge {www.desibbrg.com ~ Da Xclusives.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 814 MiB
Duration : 2h 22mn
Overall bit rate : 797 Kbps
Movie name : Phir Milenge
Director : archie_here @ TmG
Subject : Phir Milenge
Writing application : VirtualDubMod 1.5.10.2 (build 2540/release)
Writing library : VirtualDub build 24469/release

Video
ID : 0
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : H264
Duration : 2h 22mn
Bit rate : 404 Kbps
Nominal bit rate : 400 Kbps
Width : 672 pixels
Height : 288 pixels
Display aspect ratio : 2.35
Frame rate : 23.976 fps
Resolution : 24 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.087
Stream size : 412 MiB (51%)
Writing library : x264 core 54 rev 600
Encoding settings : cabac=1 / ref=1 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=5 / brdo=0 / mixed_ref=0 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / chroma_qp_offset=0 / slices=1 / nr=0 / decimate=1 / mbaff=0 / bframes=2 / b_pyramid=0 / b_adapt=1 / b_bias=0 / direct=3 / wpredb=1 / bime=0 / keyint=250 / keyint_min=25 / scenecut=40 / rc=abr / bitrate=400 / ratetol=1.0 / rceq='blurCplx^(1-qComp)' / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / ip_ratio=1.40 / pb_ratio=1.30

Audio
ID : 1
Format : AC-3
Format/Info : Audio Coding 3
Codec ID : 2000
Duration : 2h 22mn
Bit rate mode : Constant
Bit rate : 384 Kbps
Channel(s) : 6 channels
Channel positions : Front: L C R, Surround: L R, LFE
Sampling rate : 48.0 KHz
Stream size : 392 MiB (48%)
Alignment : Split accross interleaves
Interleave, duration : 42 ms (1.00 video frame)
Interleave, preload duration : 500 ms

When I add the file to Virtualdub, it gives me an error saying:
[!] AVI: Truncated or invalid compressed audio format detected (18 bytes,
should be 36). Attempting to fix.

And when I try to encode after decompressing the audio stream as a WAV file and encode the audio using the same, the audio encodes well, but the video encodes constantly at 2KBps while I want it to convert at 404Kbps=50.5KBps. Any ideas?? Virtualdubmod doesn't work as wel.

[guns1inger]

Try AVI Demux instead

[jagabo]

Did you set the desired bitrate in Xvid? Xvid also has problems meeting the requested bitrate with heavily compressed sources. A 400 kbps h.264 video will look significantly worse after converting 400 kbps Xvid.

[ashwin.terminator]

I definitely did try setting the bitrate(I mean ain't it obvious?) and yeah, I do know that the quality will deteriorate like crazy, but heck, I don't have an option if I'm to play it on my player.

[ashwin.terminator]

I tried AVIdemux, I click save and then it crashes. !!