WMA Profile List
There are total 51 Profiles for WMA format, they are used for differenet purposes according to your requirements. You may see the following list,

Profile Description Profile name
1 WMA 8,000 Hz; 16 Bit; Mono; 8 kbps. Video for dial-up modems or single channel ISDN (28.8 to 56 Kbps)
2 WMA 32,000 Hz; 16 Bit; Stereo; 32 kbps. Video for LAN, cable modem, or xDSL (100 to 768 Kbps)
3 WMA 8,000 Hz; 16 Bit; Mono; 8 kbps. Video for dial-up modems or LAN (28.8 to 100 Kbps)
4 WMA 8,000 Hz; 16 Bit; Mono; 4 kbps. Video with voice emphasis for dial-up modems (28.8 Kbps)
5 WMA 8,000 Hz; 16 Bit; Mono; 8 kbps. Video with audio emphasis for dial-up modems (28.8 Kbps)
6 WMA 8,000 Hz; 16 Bit; Mono; 8 kbps. Video for Web servers (28.8 Kbps)
7 WMA 11,025 Hz; 16 Bit; Mono; 10 kbps. Video for Web servers (56 Kbps)
8 WMA 11,025 Hz; 16 Bit; Mono; 10 kbps. Video for single-channel ISDN (64 Kbps)
9 WMA 16,000 Hz; 16 Bit; Mono; 16 kbps. Video for e-mail and dual-channel ISDN (128 Kbps)
10 WMA 32,000 Hz; 16 Bit; Stereo; 32 kbps. Video for broadband NTSC (256 Kbps)
11 WMA 32,000 Hz; 16 Bit; Stereo; 32 kbps. Video for broadband NTSC (384 Kbps)
12 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Video for broadband NTSC (768 Kbps)
13 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps. Video for broadband NTSC (1500 Kbps total)
14 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps. Video for broadband NTSC (2 Mbps total)
15 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps. Video for broadband film content (768 Kbps)
16 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps.   Video for broadband film content (1500 Kbps total)
17 WMA 8,000 Hz; 16 Bit; Mono; 6 kbps. Audio for low bit rate voice-oriented content (6.5 Kbps)
18 WMA 22,050 Hz; 16 Bit; Mono; 20 kbps. Audio for FM radio quality for dial-up modems (28.8 Kbps mono)
19 WMA 22,050 Hz; 16 Bit; Stereo; 20 kbps. Audio for FM radio quality for dial-up modems (28.8 Kbps stereo)
20 WMA 32,000 Hz; 16 Bit; Stereo; 32 kbps. Audio for dial-up modems (56 Kbps stereo)
21 WMA 32,000 Hz; 16 Bit; Stereo; 48 kbps. Audio for single-channel ISDN (64 Kbps stereo)
22 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Audio for near-CD quality (64 Kbps stereo)
23 WMA 44,100 Hz; 16 Bit; Stereo; 96 kbps. Audio for CD-quality (96 Kbps stereo)
24 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps. Audio for CD-quality transparency (128 Kbps stereo)
25 WMA 22,050 Hz; 16 Bit; Stereo; 32 kbps. Video for color PDA devices (225 Kbps)
26 WMA 22,050 Hz; 16 Bit; Stereo; 32 kbps. Video for color PDA devices (150 Kbps)
27 WMA 22,050 Hz; 16 Bit; Stereo; 32 kbps. Windows Media Video 8 for Color Pocket PCs (225 Kbps)
28 WMA 22,050 Hz; 16 Bit; Stereo; 32 kbps. Windows Media Video 8 for Color Pocket PCs (150 Kbps)
29 WMA 8,000 Hz; 16 Bit; Mono; 8 kbps. Windows Media Video 8 for Dial-up Modems or Single-channel ISDN (28.8 to 56 Kbps)
30 WMA 32,000 Hz; 16 Bit; Stereo; 32 kbps. Windows Media Video 8 for LAN, Cable Modem, or xDSL (100 to 768 Kbps)
31 WMA 8,000 Hz; 16 Bit; Mono; 8 kbps. Windows Media Video 8 for Dial-up Modems or LAN (28.8 to 100 Kbps)
32 WMA 8,000 Hz; 16 Bit; Mono; 5 kbps. Windows Media Video 8 for Dial-up Modems (28.8 Kbps)
33 WMA 11,025 Hz; 16 Bit; Mono; 10 kbps. Windows Media Video 8 for Dial-up Modems (56 Kbps)
34 WMA 16,000 Hz; 16 Bit; Mono; 16 kbps. Windows Media Video 8 for Local Area Network (100 Kbps)
35 WMA 32,000 Hz; 16 Bit; Stereo; 40 kbps. Windows Media Video 8 for Local Area Network (256 Kbps)
36 WMA 32,000 Hz; 16 Bit; Stereo; 48 kbps. Windows Media Video 8 for Local Area Network (384 Kbps)
37 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Windows Media Video 8 for Local Area Network (768 Kbps)
38 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Windows Media Video 8 for Broadband (NTSC, 700 Kbps)
39 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps. Windows Media Video 8 for Broadband (NTSC, 1400 Kbps)
40 WMA 32,000 Hz; 16 Bit; Stereo; 48 kbps. Windows Media Video 8 for Broadband (PAL, 384 Kbps)
41 WMA 44,000 Hz; 16 Bit; Stereo; 64 kbps. Windows Media Video 8 for Broadband (PAL, 700 Kbps)
42 WMA 22,050 Hz; 16 Bit; Mono; 20 kbps. Windows Media Audio 8 for Dial-up Modem (Mono, 28.8 Kbps)
43 WMA 22,050 Hz; 16 Bit; Stereo; 20 kbps. Windows Media Audio 8 for Dial-up Modem (FM Radio Stereo, 28.8 Kbps)
44 WMA 32,000 Hz; 16 Bit; Stereo; 32 kbps. Windows Media Audio 8 for Dial-up Modem (32 Kbps)
45 WMA 44,100 Hz; 16 Bit; Stereo; 48 kbps. Windows Media Audio 8 for Dial-up Modem (Near CD quality, 48 Kbps)
46 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Windows Media Audio 8 for Dial-up Modem (CD quality, 64 Kbps)
47 WMA 44,100 Hz; 16 Bit; Stereo; 96 kbps. Windows Media Audio 8 for ISDN (Better than CD quality, 96 Kbps)
48 WMA 44,100 Hz; 16 Bit; Stereo; 128 kbps. Windows Media Audio 8 for ISDN (Better than CD quality, 128 Kbps)
49 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Windows Media 8 Fair Quality based VBR for Broadband
50 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Windows Media 8 High Quality based VBR for Broadband.
51 WMA 44,100 Hz; 16 Bit; Stereo; 64 kbps. Windows Media 8 Best Quality based VBR for Broadband.