About 3G2, 3G2 video file description
3G2 (3GPP2 file format) is a multimedia container format defined by the 3GPP2 for 3G CDMA2000 multimedia services. It is very similar to the 3GP file format, but has some extensions and limitations in comparison to 3GP.The 3G2 file format can store the same video streams and most of the audio streams used in the 3GP file format. In addition, 3G2 stores audio streams as EVRC, EVRC-B, EVRC-WB, 13K (QCELP), SMV or VMR-WB, which was specified by 3GPP2 for use in ISO base media file format.The 3G2 specification also defined some enhancements to 3GPP Timed Text. 3G2 file format does not store Enhanced aacPlus (HE-AAC v2) and AMR-WB+ audio streams
3G2 format should not be mixed up with 3GP, although they are both applicable to third generation mobile phone systems. The main difference between the two is that whereas 3GP specifications are based on GSM (Global System for Mobile Communications), 3G2 specifications are based on CDMA (Code Division Multiple Access). 3G2 is often called an updated version of 3GP as it was developed when the need was felt to increase the speed and ease of wireless communications. Since the initiative for its development came from ITU’s (International Telecommunication Union) IMT-2000 (International Mobile Telecommunications), 3G2’s specifications fall within the scope of IMT-2000.
For the storage of MPEG-4 media (AAC audio, MPEG-4 Part 2 video, MPEG-4 Part 10 – H.264/AVC) in 3G2 files, the 3G2 specification refers to the MP4 file format and the AVC file format specification, which described usage of this content in the ISO base media file format. For the storage of H.263 and AMR content 3G2 specification refers to the 3GP file format specification.
Key Features:
●High-speed 3GP encoder with our own MMX/SSE/SSE2-optimized encoding core.
●Supports batch conversion. So, you can convert a number of video files at the same conversion settings at one time.
●Supports video codec: DivX, MPEG4, Xvid, H.263.
●Can set the video resolution, video quality, framerate and zoom mode (Letterbox or Stretch).
●Supports audio codec: AMR-NB, AAC-LC (Advanced Audio Coding).
●Can set the audio bitrate, audio frequency and audio channel.
●Has intuitive and friendly interface, and works as a wizard. So, it is very easy to operate.
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