To distinguish between HD (High Definition) and SD (Standard Definition) in Real-time Audio and Video (TRTC), you can consider the following aspects:
Resolution: HD videos typically have a higher resolution than SD videos. For example, HD videos may have a resolution of 720p (1280x720 pixels) or 1080p (1920x1080 pixels), while SD videos usually have a resolution of 480p (854x480 pixels) or lower.
Bitrate: The bitrate of HD videos is generally higher than that of SD videos. A higher bitrate means more data is used to represent each frame of the video, resulting in smoother and clearer images. For instance, an HD video might have a bitrate of around 5 Mbps (megabits per second), while an SD video might have a bitrate of around 1 Mbps.
Frame rate: HD videos often have a higher frame rate than SD videos. A higher frame rate means more frames are displayed per second, resulting in smoother motion. Common frame rates for HD videos are 30fps (frames per second) or 60fps, while SD videos typically have a frame rate of 24fps or 30fps.
Example: Imagine you are watching a live streaming event. If the video quality is clear, with sharp details and smooth motion, and the resolution is 1080p or 720p, it is likely an HD stream. On the other hand, if the video appears pixelated, with fewer details and slightly jerky motion, and the resolution is 480p or lower, it is probably an SD stream.
When using TRTC, you can usually select the desired video quality (HD or SD) based on your network conditions and requirements. For example, if you are using Tencent Cloud's TRTC service, you can configure the video parameters, including resolution, bitrate, and frame rate, to suit your needs. This allows you to optimize the video quality for different scenarios and audiences.