1, online classes can repeat lectures and lectures, so you don't have to worry about missing classes, you don't have to worry about not understanding them once, and even two or three students can attend classes with one account and share the expenses. Low cost.
2. Online classes can be attended by mobile phones and watched anytime and anywhere, which saves a lot of time in face-to-face lectures.
3. Online classes can gather some good teachers to give lectures, but because of cost factors, it is difficult to concentrate a group of high-quality teachers to give lectures offline.
4, online classes, there is a dedicated APP, you can brush questions, you can answer questions online, you can take exams online, which is more flexible than face-to-face classes. Videos are generally slow to update, not necessarily the latest courses, and there are no services such as brushing questions. They are completely on their own.
Extended data
Features of online courses:
1, breaking geographical and national boundaries
2. Modularization of teaching units
3. Multimedia carrier
4. Multi-directional human-computer interaction.
5. It is easy to stimulate learners' learning enthusiasm.
Characteristics of network video:
Network video is a dynamic image spread on the network in video file formats such as WMV, RM, RMVB, FLV, MOV, etc., including various film and television programs, news, advertisements, FLASH animations, self-timer DV, chat videos, game videos, surveillance videos, etc.
The advanced functions of network video make it very suitable for security monitoring applications. The flexibility of digital technology has effectively improved the ability of security personnel, protection personnel, houses and property.
Network video technology enables users to collect relevant video and audio information of all key locations they care about, and can watch and intervene in real time.
Typical application:
1, video conference, video phone, video chat
2. Online video
3. Security system
4. Remote deployment and technical support
Baidu Encyclopedia-Online Course
Baidu Encyclopedia-Network Video