Can't extract audio from Avi with broken index

[Dron ZX]

Hi everyone!

There's a problem with avi file exported by the game. The index was broken during the export. I was trying to conver the video to another format using Virtual Dub but got no audio. VLC, MeGui, ffmpeg, Handbrake say there's an empty audio stream, AviDemux can't open the file at all. But MediaInfo say the audio track is present in the file.

General
Complete name : D:\rFactor\ReplayFridge\Movies\Brianza Oval SR 1.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 3.97 GiB
Duration : 31 min 48 s
Overall bit rate : 17.9 Mb/s

Video
ID : 0
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L5.1
Format settings : 16 Ref Frames
Format settings, CABAC : No
Format settings, Reference : 16 frames
Codec ID : H264
Duration : 31 min 48 s
Bit rate : 15.8 Mb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 50.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.152
Stream size : 3.50 GiB (88%)
Writing library : x264 core 152 r2851bm ba24899
Encoding settings : cabac=0 / ref=16 / deblock=0:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=1 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=crf / mbtree=0 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00

Audio
ID : 1
Format : PCM
Format settings : Little / Signed
Codec ID : 1
Duration : 31 min 48 s
Bit rate mode : Constant
Bit rate : 1 411.2 kb/s
Channel(s) : 2 channels
Sampling rate : 44.1 kHz
Bit depth : 16 bits
Stream size : 321 MiB (8%)
Alignment : Aligned on interleaves

Maybe somebody knows... Is there any software which can extract audio data from corrupted AVI?
I tried to search through the forum but it seems the search panel doesn't work for me

[El Heggunte]

I don't know a solution to your problem, but here go my 2 cents...

1) OK, MediaInfo confirms there is an audio track, but this is no guarantee that it is not 100% pure silence

2)

There's a problem with avi file exported by the game.

H.264 in a .AVI file is a bad idea, unless you know exactly what you're doing.

cabac=0 / ref=16 / deblock=0:0:0 / analyse=0x3:0x133 / me=umh / subme=10 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=24 / chroma_me=1 / trellis=2 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=1 / lookahead_threads=1 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc=crf / mbtree=0 / crf=20.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00

0_o

It's not sufficient to use "b_frames=0" or/and be sure the video decoder will be "smart enough".
The less the encoder has to "think" during the capture process, the better.