Encoding 101 Contact Print
   Why Encode?   The Process   Transcoding   Encoding Terms   
       Media Hosting
    Web Conference
    Streaming 101
    Encoding 101
       Audio Samples
       Video Samples

Encoding Terms

Video Frame Rate: Video frames per second. The more frames per second,the smoother the motion and the more data is required to transfer per second. Video Size: Height and width of the video frame. The bigger the frame size, the more data required to transfer per second.

Video Key Frames per Second: Key frames are fully rendered frames that are inserted at specific intervals. The more key frames, the better the video quality and higher the data transfer per second. Note that most of the newer CODECs now offer automatic key frame insertion. This process automatically detects a scene change and inserts a key frame at the beginning of the scene. This lowers the overall amount of key frames required and lowers the overall data to stream the media file.

CODEC: This is the software compression component which compresses and decompresses the audio and video - Note that each new CODEC version continues to improves overall quality of streaming and lowers the data required to render quality audio/video at large frame sizes and lower delivery rates. CODECs are created for either video or audio compression. Audio CODECs are optimized for delivering two types of content: voice or music. Each optimizes the sound quality of the content while minimizing the bandwidth required to stream the content.

Audio Delivery rate: This is the size of the data allocated to the audio stream. The higher the delivery rate, the better the sound quality and more data per second.

Audio Sample Rate: This is the frequency of audio samples that is rated in kilohertz. The higher the kilohertz, the better the sound fidelity and more data per second.


1998-2021 PowerStream LLC