Share with you something about video formats

admin    Flash Video     About, Formats, Share, something, Video

As it is well know that video formats are classified into two applications, one for local use and the other for Internet. The formats for local use include AVI, nAVI, DV-AVI,MPEG suite, Dvix, MOV, etc. What the differences between these formats? I’m here to give some general information as a guide. AVI, Audio Video Interleaved, is developed by Microsoft in 1992. AVI has such advantages as high image quality, application in multi-platforms. But its disadvantages are also explicit, large volume, without a unified compression standard, and the most common nuisance is that the higher-version Windows Media Player simply can’t play AVI videos which are edited with earlier codes, and vise versa. So it is not a uncommon case that when we AVI videos , it just don’t work or anyway it works ,there is only audio without image or such kinds of weird problems. If you happen to be stuck with these tracks, download related codecs to cope. nAVI, new AVI , a new kind of video format. Don’t mistake it for the brother of AVI, and in fact the two has little relationship. nAVI is a variation of compression arithmetic ASF, but still a bit distinct from it. By increasing frame rate, nAVI enhances definition of ASF videos, but at the cost of the streaming attribute of ASF video files. DV-AVI, as Digital Video Format, was rolled out by Sony, Panasonic, JVC and several other companies.It is the format applied by the most popular vidicons at present to record video data.It can be transmitted to PCs through IEEE 1394 port, and vise versa, that is to transmit the edited video data back to vidicons. The extension name of this format file is .avi, and so comes the name DV-AVI. MPEG, Moving Picture Expert Group, is the format of VCD, SVCD, DVD. This format applies lossy compression to reduce redundant info in active images, and to express it more clearly, MPEG makes use of the fact that the two contiguous images are almost the same, to extrat the redundant info of the latter image ,as so to meet the compression aim( the highest compression reaches 200:1).At present, MPEG suite family members are MPEG-1,MPEG-2,MPEG-4.The other two MPEG-7 and MPEG-2 are right now under development. DivX, a video compression standard , is a variation of MPEG-4, namely DVDrip. It uses DivX technology to compress DVD videos, and at the same time applies MP3 or AC3 to compress audios, and later composes the video and audio files with associated subtitles to create the video. It is comparable with DVD in image quality, with a much decreased volume as an additional merit. So people come to hail it as a ‘terminator’ to DVD. MOV, developed by Apple , features a high compression ratio and near perfect definition, while its most outstanding trait is its trans-platform ability, supporting Windows other than its intimate pal MacOS.

Benefits of Converting Powerpoint to Video Formats

admin    Flash Video     Benefits, Converting, Formats, PowerPoint, Video

Benefits of converting PowerPoint to video formats

What video formats we are talking about?

A Video refers to recording, manipulating, and displaying moving images, especially in a format that can be presented on a television.

Video formats are confusing because most video files have at least two different types: the container and the codec used inside that container. I’ll list some common video formats that we often used :

AVI (.avi): Most commonly contains M-JPEG (especially from digital cameras?) or DivX (for whole movies), but can contain nearly any format (not Sorenson). Sometimes you’ll see a reference to the “fourcc”: this is a four-character code (such as “divx” or “mjpeg”) inside the AVI container which specifies which video codec is being used.

QuickTime(MOV): Most often used for the locked Apple Sorenson codec, or for Cinepak (free), but can also hold other codes such as mjpeg, etc.

WMV (.wmv): More or less MPEG4; can contain nearly any codec, including several Microsoft spinoffs of MPEG-4 which vary in their freedom and licensing requirements.

ASF (“Advanced Streaming Format”, .asf): a subset of wmv, intended primarily for streaming: an early Microsoft implementation of an MPEG4 codec.

MPEG (“Moving Pictures Expert Group”): three video formats, MPEG 1, 2, and 4.

MPEG-1: Old, supported by everything (at least up to 352×240), reasonably efficient, most used in VCD.

MPEG-2: A souped-up version of MPEG-1, with better compression. 720×480. Used in HDTV, DVD, and SVCD.

MPEG-4: A family of codecs, some of which are open, others Microsoft proprietary. A good format for the web.

MPEG spinoffs: mp3 (for music) and VideoCD.

Why we need to convert PowerPoint to Video?

We suddenly find out that a number of people in the world are converting PowerPoint to video, since we live in a world with the mentality of a herd; everyone else wants to do this. But for what, why? I believe many of them are confused. Well, what is rational is actual and what is actual is rational. There are must be some advantages to do so.

First of all, you know that PowerPoint can only be played on PC with Microsoft PowerPoint installed, and sometimes it must be the right PowerPoint version with right operating system, if any of them has problem, your PowerPoint presentation plan can become a deadlocked, but if you convert PowerPoint to video formats, you don’t need to worry about it, since video formats can be played on any PC or Mac system. Where video is played means your PowerPoint can be shown.

The next thing is many gadgets like iPod, iPhone, Zune support certain video format; you can import the converted PowerPoint video presentation and then view your PowerPoint presentation on them.Some famous websites like YouTube are support video upload, which gives you a way to share your PowerPoint presentation with others!

Besides, if you want to protect your PowerPoint from others edit, you can convert them to video and sent to others, what they can do is just watching!

I only list some of the advantages, I think there should be more, explore yourself, if you have any good ideas, we hope you can write to us. info@ppt-to-video.com

How to convert PowerPoint to video formats that we need?

Here is just an example:

A number of people asked if it’s possible to displaying presentations via apple TV, the answer is yes, and in fact, there are two ways to make Apple TV as a presentation tool.

As we all know: Apple built the device to stream movies and iTunes content, not display PowerPoint or Keynote slides. If we want to make such a thing is possible, the first way can be found on the website is to export PowerPoint slides as images and create a new album in photo folder, then import the folder of images into new album, Finally we use iTunes to sync the new album so that we can displaying presentation via Apple TV. But you may notice that voice-over, music, transitions and animations are lots. That makes the presentations just a dull thing!

We will not talk about the many easy, well-known methods, most people can figure out how to do this. The $49.95 product called Acoosoft PPT2Video Converter, lets you easily create, edit, and convert your PowerPoint presentations to certain video formats such as MPEG, AVI, MP4, WMV, ASF, FLV, MOV, 3GP, 3G2. Ideal for trade show, digital signature, and in-store displays and ready for video podcast. But it is a pity that this product only supports MS PowerPoint, but it does not matter, because keynotes can export to FLV format itself. So if you want to displaying PowerPoint presentations via Apple TV, you can use this product to convert your presentations to MPEG-4 or FLV video format (MPEG-4 is the best), since movies can be streamed, you can stream your presentation to any Apple TV.

The advantage to the approach is that it’s nearly kept all the exact timings, transitions, sound and movies, all in sync with the presentations. You can explore more features by downloading a demo.

The product has 30 days free trial, so you needn’t to pay for that only after you think it’s really fit for you!

There is no functional limitation in the trial version, but a watermark on the output files. The trial version can not be registered; only full version requires the registration information, which is listed in the confirmation letter that you will receive when you have finished the payment.

Click here to have a free trial, we believe you will get more!

http://www.ppt-to-video.com/powerpoint-to-video-overview.html

The Six Popular Video Formats

admin    Flash Video     Formats, Popular, Video

AVI Format

The AVI format whose full name is “Audio Video Interleaved” is very familiar to peoples. This format is widely used in daily life, and its video quality is superior, while there are also many defects such as its large size, which takes too much hard-disk to store.

In 1992, Microsoft corporation developed the AVI video format, which is known by people with Windows3.1. Namely “Audio Video Interleaved”, the AVI file interleaves video and audio data and play them together. One of the advantage of AVI file is it can be used and played in different platforms. In another hand, to achieve the good quality, its file size is too large. Even worse, there are many different compression standards so that some AVI files can not be played if the system does not contain a proper codec. In order to play a AVI, sometimes, you have to download newer codec updates and that is very inconvenient.

MPEG Format

The full name of MPEG is ?Moving Picture Expert Group?, which is an international compression standard designed for moving images. MPEG algorithms compress data to form small bits that can be easily transmitted and then decompressed. Redundancy between subsequent images and previous images is removed while most similar parts are preserved to cut down the file size. Its compression rate can reach 50:1 and it is a video standard of good compatible. Currently, MPEG includes three compression standards: MPEG-1, MPEG-2 and MPEG-4. Additional, MPEG-7 and MPEG-21 are being developed.

MPEG-4 Format

MPEG-4 (MP4) is a moving picture compression standard which is used for Internet, broadcast, and on storage media. Relative to MPEG-2, MPEG-4 provides improved quality at a small size. Not only can it be used in narrow bandwidth but also in wide bandwidth. Currently, the most compression technology of MPEG4 are DivX and XviD. Videos processed by DivX or XviD lose a little quality but the size will be reduced greatly. It provides users a convenient way to store a movie in a common CD-Rom disc, while the quality is better than VCD obviously.

RM Format

RM format developed by RealNetworks Corporation is a video format for stream media. It includes RealAudio, RealVideo and RealFlash. To transmit and play real-time video files in narrow-bandwidth Internet, Real Media adopts distinct compress rate according to the bandwidth. RealVideo is used to transmit video data. Except being played as a normal video file, it also can be used together with RealServer. RealEncoder converts real-time video to RealMedia Format, which is broadcasted by RealServer. You can enjoy the video when you are downloading it. Not like many other video format, it is not necessary for RM format to download the whole video file before it can be played.

Currently, many websites provide RealVideo files. You can use RealPlayer or RealOne Player to play videos compressed by RealMedia technology. Another important feature of the format is video files can be played without downloading, if you use RealPlayer or RealOne Player.

RMVB Format

As the heir of RM format, RMVB format is developed based on RM format. The advantage is RMVB format abandons Average Bit Rate and use Variable Bit Rate to compress video data. By Variable Bit Rate technology, quality of video files is greatly improved while file size of them is acceptable.

DivX Technology

DivX developed by DivX, Inc. is a popular new video compression technology, which enables users to create and play high-quality videos in a fast and convenient way. For its outstanding quality, the DivX codec is one of the most popular MPEG-4 based codec. It integrates MPEG-4 and MP3 technology, namely it adopts DivX technology to compress DVD video data, while MP3 or AC3 is used to compress Audio. The quality is so superb that there is only a little disparity between DivX videos and DVDs. Another remarkable advantage is compared to DVDs, DivX videos provide the same image quality at only 1/10 the size. Especially, it is suitable for movie downloads. In a word, this video format is very popular and liked by many movie fans.

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