ISMA Profiles - A Practical Guide to Video and Audio Compression - page 679

For descriptions of what these profiles mean in detailed terms, you should consult
the ISMA specifications.

H.4 ISMA 2.0 Profiles 2,3, and 4

The new version 2.0 ISMA standard adds three more profiles, which are summarized in
table H-3.

H-3 ISMA Version2.0 Profiles

Attribute Profile 2 Profile 3 Profile 4

Target Low resolution Broadband. SDTV Fast local area network,

video or audio resolution video HDTV applications.

only services. services.

Codec MPEG-4 Part 10 MPEG-4 Part 10 MPEG-4 Part 10 video,

video, Baseline video, Main Main Profile, Level 3

Profile, Level 2 Profile, Level 3

Raster size 352 × 288 (CIF) 720 × 576 (D1-PAL) 1280 × 720 up to 2k × 1k

Frame rate 30 FPS 30 FPS (assumed to 30 FPS or 60 FPS ...at

mean 25 in smaller picture sizes.

Europe)

Audio HE-AAC Audio AAC Audio Profile AAC Audio Profile at

Profile at Level 2. at Level 3. Level 4.

Sample rate Up to 48 KHz Up to 48 KHz Up to 48 KHz

Max bit rate 1.2 Mbps 3.7 Mbps 15 Mbps