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Old 23 Sep 2017, 06:22 AM   #1
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Join Date: Nov 2001
Posts: 22
Default Extracting audio track from a AVI, not working

I have a audio recording that was saved as a avi file, which is strange because there is no video. When I try to play it on my iPhone or Android, it says the file is not supported. Even VLC will not play it, it says:

Codec not supported:
VLC could not decode the format "RFBW" (No description for this codec)
Unidentified codec:
VLC could not identify the audio or video codec

I've tried to convert it using other video to audio converters but they all fail.

I just happen to try it in Windows media player, and to my shock, it actually played it. Now I'm really confused how Windows media player can play it but VLC, which usually plays pretty much anything, fails to.

Anyone know how I can extract/convert the audio from this stubborn avi? If WMP can play it, is there a way in WMP to convert and save it?

Here is the MediaInfo from the file if that helps:


Format                                   : AVI
Format/Info                              : Audio Video Interleave
File size                                : 3.91 MiB
Duration                                 : 14mn 18s
Overall bit rate                         : 38.2 Kbps

ID                                       : 0
Format                                   : RFBW
Codec ID                                 : RFBW
Duration                                 : 14mn 18s
Bit rate                                 : 8 681 bps
Width                                    : 3 000 pixels
Height                                   : 1 920 pixels
Display aspect ratio                     : 16:10
Frame rate                               : 100.000 fps
Bits/(Pixel*Frame)                       : 0.000
Stream size                              : 910 KiB (23%)

ID                                       : 1
Format                                   : G.729a
Codec ID                                 : 83
Codec ID/Hint                            : AT&T
Duration                                 : 13mn 49s
Bit rate                                 : 8 000 bps
Channel(s)                               : 1 channel
Sampling rate                            : 8 000 Hz
Bit depth                                : 1 bit
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