AVI Audio not importing correctly - badly muffled with distortion

Hi,

Searched forum and guessing this will be a known compatibility issue.

I want to re-import audio, after editing the original footage in an exported tiff sequence.

The audio will be re-imported and saved with Aftercodecs in mp4 265 format.

Do I need to convert audio into another format?

What format and what should I use?

General
Complete name : C:\Interview.avi
Format : AVI
Format/Info : Audio Video Interleave
File size : 7.08 MiB
Duration : 1 min 0 s
Overall bit rate : 990 kb/s

Video
ID : 0
Format : MPEG-4 Visual
Format settings : BVOP1
Format settings, BVOP : 1
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Muxing mode : Packed bitstream
Codec ID : DX50
Codec ID/Hint : DivX 5
Duration : 1 min 0 s
Bit rate : 970 kb/s
Nominal bit rate : 4 000 kb/s
Width : 640 pixels
Height : 480 pixels
Display aspect ratio : 4:3
Frame rate : 29.970 (30000/1001) FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.105
Stream size : 6.94 MiB (98%)
Writing library : DivX 5.0.3 (UTC 2003-01-24)

Audio
ID : 1
Format : GSM 6.10
Codec ID : 31
Codec ID/Hint : Microsoft
Duration : 1 min 0 s
Bit rate : 13.0 kb/s
Channel(s) : 1 channel
Sampling rate : 8 000 Hz
Stream size : 95.2 KiB (1%)
Interleave, duration : 953 ms (28.56 video frames)
Interleave, preload duration : 960 ms