- Do homework :)
- Try to do audio part if we haven't covered it today yet
- Google the answers la
- Data file type for images (i.e. jpg, bmp, etc)
- Video
- Combination of audio + images
- Calculation of size
- Frame rate
- Frame size
- Color depth
- Comperssion Ratio (e.g. 1:1000)
- Bitrate
- Just multiply bitrate and duration.
- If bitrate not given, multiply everything
-
AVI
- Usually largest file size
- Sometimes uncompressed, making it large
- Usually has better quality (due to uncompression)
-
MP4
- Smaller file size
- "Acceptable" video quality (how vague!)
-
WMV
- Usually seen in Windows
- Stands for "Windows Media Video"
- Supported by Windows primarily
- Not really cross-platform
-
MOV
- Usually seen on Apple software
- QuickTime video
-
FLV
- Stands for "Flash Video"
- Flash is dead now so rest in peace
-
AVI and MP4 is used more commonly nowadays.
-
To make you able to view videos more quicker, streaming has been introduced.
- It works by caching your videos for few more seconds
- Streaming != Live.
- Streaming doesn't have to be live.
- Data used by streaming = Data used by downloading whole video
- You don't save any cellular data by streaming
- Video is downloading when video is downloading
- Note that it also has limitations.
- e.g. Net speed makes video unplayable
- FIX: Buffer time
- e.g. Net speed makes video unplayable
Everything that YMC teached except for multimedia