What Is VHS-C?
Through the camera, magnetic drum photoelectric conversion, electromagnetic conversion equipment and other components, the recorded information and sound are recorded in the form of video and audio signals. The physical memory that stores video and audio signals is called a videotape.
Videotape
Right!
- Chinese name
- Videotape
- Foreign name
- Video tape
- Through the camera, magnetic drum photoelectric conversion, electromagnetic conversion equipment and other components, the recorded information and sound are recorded in the form of video and audio signals. The physical memory that stores video and audio signals is called a videotape.
- Q: What is VHS / VHS-C?
Answer: The so-called VHS is a so-called "big tape", which uses a 12mm video tape. VHS-C is a contraction of VHS
In addition, the same 6.35mm-bandwidth video tape, as well as professional-grade DVCAM and DVCPRO, they are the video tape specifications for professional digital cameras of SONY and Panasonic respectively.
- The bandwidth of the video signal recorded in the high band is greater than that in the low band. For example, the 6.5MHZ of S-VHS is higher than the 2.25MHZ of VHS.
High-band speeds are higher than low-band speeds, such as miniDV and DVCAM / DVCPRO
High-band machines are usually compatible with low-band playback, but the reverse is usually not possible (some VHS machines claim to be, such as Panasonic HD550)
- The manufacturing process of the high belt is much higher than that of the low belt, and the high and low belt of the same size is distinguished by the machine through the identification hole on the belt box.
The price of high and low tapes is not the same. We buy miniDV tapes in batches at 90RMB / box, while DVCAM tapes (35 minutes) are 200RMB / box.
If the low-band is changed to a high-band for recording by modifying the identification hole on a simulation machine (such as the previously famous VHS band changed to the S-VHS band), very unacceptable burrs and high-luminance areas will appear. Degradation. conicwrote:
I say something about the DV band:
Our commonly used home digital DV machine uses a MiniDV tape, which is a metal digital tape. The DV machine uses the standard 60 minutes when recording in the SP mode, and can be extended to 90 minutes when recording in the LP mode. This is because of the head speed. s reason. There are many brands, such as Sony, Panasonic, JVC, TDK, Fujitsu, etc., at a cheap price of about 30 yuan.
Semi-professional digital DV machine such as Sony's PD150, etc., in addition to supporting the SP format, also supports a DVCAM format developed by Sony, and has a special
- By the way, the resolution of LP, SP, DVCAM, DVCPRO and other formats are the same. The reason why the effect of the home machine is not good is because its optical system and electronic circuit are not working.
- The code rate of miniDV is 12Mb / S, DVCAM is 18Mb / S (another data introduction is 22Mb / S), DVCPRO25 is 25Mb / S as its name suggests, 50/100 and so on. The component mode of miniDV is 4: 0: 0
DVCAM's component mode is 4: 2: 0
DVCPRO25's component mode is 4: 1: 1
DVCPRO50's component mode should be 4: 2: 2 or 4: 4: 4 or 4: 4: 0
DVCPRO100's component mode should be 4: 4: 4: 4
The larger the bit rate, the smaller the compression ratio, the smaller the image loss, and the better the quality