Through theory and practice, we summarized in each link below to take some methods and strategies: convert YouTube to iPad Mac
videotape:
1. Try to choose pure background, such as the white wall, the sky, the sea and the lake of peace, etc. Try to avoid the crowds like forest leaf flowing as the background noise, this will lead to more Mosaic.
2. Multi-purpose large aperture shooting close-up face, such as fuzzy background is reduced the amount of data, also foil protagonist. Also be slow movement speed camera. So, let customers when star feeling, and makes the picture is concise, compression effect is good. Burn iMovie to DVD
3. Enough lighting. Bright scene of video to shoot good SNR. Practice proves that the signal-to-noise ratio video compression of the final quality has very big effect, useless clutter consumed many data flow, cause Mosaic phenomenon aggravating.
4. Use good videotapes. (don't ask me which brand)
The capture:
Choose good record FangXiangJi, often clean the head, reduce output clutter. play AVI files on Macbook
Production:
Use special, less with the rapidly changing Transition, can use some slow motion, image quality, but also appreciate effect.
Compression:
Only according to circumstances and needs.
Burn:
My experience is DAO mode of play better than TAO compatibility. If the VCD rather read, also can produce Mosaic.
I think everybody wants to put their VCD doing more clearly. Is everyone's hardware configuration, although cannot do the same with professional equipment (at least time did not permit), but we can completely theory, combined with the practice, weakness, implementation of total quality management, to improve the maximum quality of work.
Perception of the opponent and yourself will yield forever success. Firstly we should know about MPEG1e. MPEG is the standards of the activities image and the sound proposed by CCITT and ISO (Motion Picture Experts Group). The Numbers of ISO/IEC11172. The first stage of their achievements, it is stipulated MPEG1 video information and information through compressed sound after the data rate of 1. 5 MB/s. convert AVI to QuickTime Mac
The MPEG video images of the frame number according to certain fathers, each group is divided into three types:
Intrapicture: It's still image compression method, all information must be transmitted, and after a random access of orientated.
Predicted Pictures: Only to encode information prediction error, and after a further prediction parameter.
Bidirectional Predicted Pictures: It is used for processing image interpolation after, and not as a reference picture itself, so don't use, but need to transfer motion compensation information. rip DVD to MacBook
Integrated frame compression and frame, with high compression of frequency MPEG. For example, an announcer in broadcast, background, almost the only announcer mouth was moving, the difference between frames but mouth little change, so the MPEG can use the data flow at a complete record of video animation.
No comments:
Post a Comment