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Knowledge about video formats


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#1
runningtiger

runningtiger

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Up to now, there have been many video formats in use, among which the commonly applied are AVI, ASF, MPEG/MPG/DAT, DIVx, MOV, RM, RMVB. There is a relevant player for each formatted video. QuickTime for MOV, Real Player for RM, just take these two examples. You know, we can’t own players for all formats. As 3G phone is well entrenching on the realm of conventional handset market, watching movie on-the-go has become a kind of fashion. But at least for the time being, the formats supported by 3G phones are anything but many. Then how to make that ‘movie your commute’ be realized? Conversion from those alienated formats to accepted ones is the answer. Following the article, you will get to know something about this trick. :blink:

VCD to MPEG-4
The first step is to convert DAT, the file of VCD, to MPEG-1.To make this done, you can harness the re-recoding function of Super Codec, and convert the needed section to AVI file , and store away. Then use VirtualDub 1.3 to complete the conversion, creating a MPEG-4 video file. VirualDub supports ‘Normal’ and ‘Highest’ converting rate, for background and fast conversion respectively. MPEG-4 file is 3 times smaller than the original one, and allows you to optimize every part of the movie, while maintaining compatibility. The format contains a wide variety of compression technologies to deliver the best performance for every kind of content. :whistling:
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#2
runningtiger

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Continue: video formats
RM-3GP :whistling:
RM ,for its small size and little loss of original video , has gained a popular application on the Internet. But currently only a few smartphones support RM, then how to make you handset play this Internet borne video? Use Xilisoft 3GP video converter to click the whole process. This software offers multithreading and batch conversion, and so just a click ,you can convert several files into 3GP video ,at the same time. 3GP, created to work in a fast data transmission network, is supported by all 3G phones.

:blink:
RMVB, an extension of enhanced RM, takes on an even smaller volume as a result of its variable sampling rate technology. Advantage in one aspect always comes at the cost of other aspects. For RMVB, its convenience brought about by the small size leads to a headache, the difficulty of conversion. Few converters nowadays support this format. Winavi is a powerful converter able to converter rmvb files into mpeg2,dvd, etc. making it easier to converter further into 3gp.
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