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Old 23 Sep 2017, 06:22 AM   #1
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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:

Code:
General

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

Video
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%)

Audio
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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Old 27 Oct 2018, 04:50 AM   #2
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Default

I'm looking for way to play video files with RFBW codec, do you still have way to play them? What software had you installed?
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Old 27 Oct 2018, 04:58 AM   #3
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Default

The same thing happened to me as well, and I thought it was strange. Daniel Silva
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Old 27 Oct 2018, 05:00 AM   #4
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Default Hello

I am new here. I just happened to say hi
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Old 27 Oct 2018, 02:34 PM   #5
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I am new here. I just happened to say hi

ffmpeg -i input-video.avi -vn -acodec copy output-audio.aac

vn is no video.
acodec copy says use the same audio stream that's already in there.

ffmpeg -i video.mp4 -f mp3 -ab 192000 -vn music.mp3
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