Narrowband HD TM 1.0 is based on Alibaba Cloud's exclusive transcoding technology, which optimizes videos to lower bandwidth costs without sacrificing video quality. This is achieved by performing intelligent analysis on each scene, movement, content, and texture in a video.
Prerequisites
Benefits
- Narrowband: reduces unnecessary bits.
- HD: allocates bits to where the bits can create the most value.
About definition
ApsaraVideo VOD provides definition presets that support Narrowband HD™. Narrowband
HD™ transcoding can be applied to videos in the MP4, Flash Video (FLV), and HTTP Live
Streaming (HLS) formats. The following table lists the presets provided by Narrowband
HD™.
Definition | Bitrate range (kbit/s) | Resolution - width (pixels) |
---|---|---|
Low definition | ≤ 400 | 640 |
Standard definition | ≤ 800 | 848 |
High definition | ≤ 1500 | 1280 |
Ultra high definition | ≤ 3000 | 1920 |
2K | ≤ 4000 | 2048 |
4K | ≤ 8000 | 3840 |