A brief introduction to several video formats, including ASF, MTS/M2TS, MOD/TOD, MKV, MPEG, DivX, etc.

Nowadays, more and more video formats have emerged; however, people sometimes feel confused with them, in purpose of letting people have brief understanding of these formats, this article will choose some to do simple explanations.

ASF
ASF is an acronym for Advanced Streaming format, and from the literal meaning (Advanced Streaming Format) that we should know its usage. To put it bluntly, ASF is a compression video format for online watching, which is developed by Microsoft to compete with Real player. Because of its use of MPEG4 compression algorithm, its compression ratio and image quality is very good.
ASF is a real-time online viewing video streaming format, so its image quality is inferior to VCD. But it is better than RAM which is the same video streaming format. However, if you do not consider spreading on-line, and choose the best quality to compress files, then, the generated video files would be better than VCD (MPEG1). But it will lose the original intension of developing ASF. In that case, you might as well directly use N AVI or DIVX. However, the "offspring” of Microsoft has its unique advantages. The most obvious thing is that various kinds of software are supporting it.

nAVI
nAVI is short for newAVI, it is a video format developed by an underground organization called ShadowRealm. It is from the changes of Microsoft ASF compression algorithm, not AVI in imagine. Video format is nothing more than the pursuit of compression ratio and image quality, so in pursuit of this goal, nAVI improved the shortcomings in ASF, and has a higher frame rate. Of course, this sacrifices the video streaming features of ASF as a price.

In summary, nAVI is the modified ASF format which has been removed the features of video streaming. More simply speaking, it is the non-network version of ASF.

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AVI
AVI stands for Audio Video Interleave, and it seems to be no need for me to explain. This old video format, which was released in the age of WIN3.1 by Microsoft, has been in application for a number of years. Its advantages are good compatibility and image quality, as well as convenient transfer. But it has a well-known shortcoming: the large size. Because of this drawback, we can see the changes from the birth of MPEG1 to the development of MPEG-4.

MPEG
MPEG is short for Motion Picture Experts Group, which includes MPEG-1, MPEG-2 and MPEG-4 (note that there is no MPEG-3, MP3 that we are familiar with is MPEG Layeur 3).

MPEG-1 is widely used in the production of VCD and some online downloading applications of video clips. It can be said that 99% of the VCDs are compressed in MPEG1. Using MPEG-1 compression algorithm, a 120-minute film can be compressed to the size of about 1.2 GB.

MPEG-2 is used in DVD compression, and also has applications in the aspect of HDTV, and some videos that demand high editing and processing. With MPEG-2 compression algorithm, a 120-minute film can be compressed to 4 to 8 GB in size (of course, its image quality is much better than MPEG-1.)

MPEG-4 is a new compression algorithm, the ASF format in this algorithm can compress a 120-minute film to video streaming in about 300M for online watching. Other DIVX formats can be compressed to about 600M, but the image quality is much better than ASF.

DIVX
DIVX video encoding technology can be said to pose a threat to DVD (some people say it is DVD killer), it comes from Microsoft mpeg4v3 modifications, and use MPEG4 compression algorithm. Meanwhile, it can be also said developing in the purpose of breaking some protocols of ASF. Compress a DVD just need two pieces of CD ROMs. This means that you do not need to buy DVD ROMs any more, but you can get more or less the same video quality as it, what you need is just CD ROMs. In addition, its requirements of the machine are not high, CPU is more than 300MHZ, with a 64M memory card, and an 8M graphic card, and then it can be played smoothly.

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QuickTime
QuickTime (MOV) is a video format created by Apple. In a very long period of time, it only exists on MAC. Later developed to support the WINDOWS platform, but to be fair, it is an excellent video encoding format no matter for local playing or online spreading.

REAL VIDEO
REAL VIDEO (RA, RAM) format is firstly defined to do video streaming applications, and it can be said to be the originators of video streaming technology. It can achieve uninterrupted video playback by 56K MODEM dial-up. Of course, its image quality is incomparable to MPEG-2 and DIVX. After all, continuous online transmission of videos requires a lot of bandwidth. In this case, ASF is its powerful competitor.

MKV
MKV is one of the file types of a container format called Matroska, which is similar to other containers like ASF, AVI, MP4, and 3GP in conception. Matroska is an open standard free container format, which can hold an unlimited number of subtitle tracks, pictures, audios, or videos within a single file. It contains three file types: MKV for video files (including audios and subtitles); MKS for subtitles (only subtitles); MKA for audio files only. To store HD video files is the most common use of MKV files.

MTS/M2TS
Before talk about MTS/M2TS, AVCHD have to be mentioned at first. AVCHD is a tapeless HD format developed by Sony and Panasonic in May, 2006. AVCHD video is compressed in MPEG-4 AVC/H.264 format, and it supports 720p, 1080i, 1080p, etc. At the same time, AVCHD audio is stored in compressed form Dolby AC-3. Well, what is the relationship between AVCHD and MTS/M2TS? If you are attentive enough, you will find AVCHD is with file extension .mts on camcorder and with .m2ts after importing to computer. Briefly speaking, MTS and M2TS are the formats that used by AVCHD camcorders to record footages. In addition, Blu-ray disc also reserve video files in format of M2TS.

Video Converter is a powerful AVI to 3GP converter that can convert AVI files to 3GP.

MOD and TOD
Both MOD and TOD are the informal tapeless video formats produced by certain digital camcorders. And both of them have never been given to any meaning explanations or official names by their creators JVC or Panasonic. The differences between them lie in: MOD are used by JVC, Panasonic, and Canon in some models of camcorders, such as JVC GZ-MG130, GZ-MS100U, GZ-MG255, Panasonic SDR-SW20, SDR-SW21, SDR-S26, Canon FS100, FS200, FS21 and so on, while TOD is only used by JVC camcorders, like JVC GZ-HD7, GZ-HD5, GZ-HD6, GZ-HD30, and GZ-HD40; Moreover, MOD is only used for standard definition video files, while TOD is exclusively used for high definition video files.

Factually, all the above video formats can be played on your portable devices, or imported to editors to do further editing, etc. as long as you convert them to their workable formats with the proper converters. The recommendations:
If you are windows user, this would be adaptive to you:
Video Converter
HD Video Converter
TOD Converter
MOD Converter
MTS/M2TS Converter
MKV Converter

How to rip Blu-ray disks to the format of MKV?

The popular trend of Blu-ray discs is irresistible, and lots of movies lovers are having Blu-ray collections more or less. At the same time, how to treasure these disks in a safer way without scratching, or how to enjoy them via many other media players or portable devices have become actual problems. Against this background, numerous Blu-ray rippers are designed for backup people’s favorite Blu-ray movies, and most of these rippers are available for directly coping without any loss or ripping Blu-rays to some other media formats with much smaller file size. Pavtube Blu-ray Ripper is such an application among them, which performs very well and does not have audio and video out of sync issues. Since a large number of BD owners are asking about how to rip Blu-ray disks to the format of MKV, this post here will focus on this question, and give a solution to it via the help of Pavtube Blu-ray Ripper.

Step 1: Download, install and run Pavtube Blu-ray Ripper
After launched it, you will see the following interface at once. There are three ways provided to import Blu-ray files, namely through clicking on “DVD Rom”, “DVD Folder”, and “IFO/ISO”.WAF converter supports more than 20 well known formats.

Step 2: Select MKV as output format, and set save path
Once Blu-ray files are loaded into this program, next you should click on the drop-down list of “Format” to select MKV as the output format. Notice that there are two kinds of MKV format, standard MKV and high definition MKV. To choose standard one, hit “Common Video” firstly and then left-click on “MKV (Matrosca) Video”. To choose HD MKV, click “HD Video” at first and then select “MKV HD Video”. Here I take SD MKV for example. There is also the Mariah internet fan organization.

Meanwhile, this ripper enables you to join all the loaded Blu-ray files together as one file, just tick checkbox “Merge into one file” to achieve this goal. Also, you can click on the folder icon at the end of “Output” to specify a destination folder, if not, this program will export the generated MKV files to a save path set by default automatically.

Step 3: Set advanced settings
If you want to make good control of the output MKV file size and quality, you can click on “Settings” button to adjust video and audio parameters like codec, aspect ratio, bit rate, frame rate, sample rate, etc. In principle, the larger input values, the better image quality, but with enlarged output file size. On the contrary, the smaller input figures, the more inferior image quality, but with decreased file size. That means you should make a balance between file size and quality. If you are not good at this procedure, just skip this step.Mac media tools support encoding for Mac OS X.


Step 4: Start ripping
As soon as all the above mentioned steps are completed, what you should do next is pressing “Convert” button. After that, an interface as below will show up. Then you need hit “Start” button to begin Blu-ray ripping. You see, all the related ripping info are all showing clearly, including ripping progress, elapsed ripping time, left ripping time, generated file size and estimated file size, in that way, you can manage your time and HD space of your computer in a proper way. After ripping work is completed, you can press “Open” button to find out the output MKV files with ease, and then do whatever you like at will.

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Trim: This is intended for users to define the beginning time as well as ending time. You can trim the section you want through either defining a specific time or an ending time or drag the side bars at the two ends to clip the movie section. The later is much more convenient.
Pavtube DVD Ripper for Mac enables users to split the entire DVD to different titles and chapters.
It also allows users to trim favorite parts of the movie if they don’t want to convert the entire movie to video.This article can not only help you put the free games on your iPod, but also catch the troubleshooting of iPod games.HD video converter for mac is a professional HD converter software for Mac users.It supports decoding and encoding of all High-Definition video.
Syncing iPod Games:
1. In iTunes, select iPod in the source list and click the Games tab.
2. Select "Sync games."
3. Click "All games" or "Selected games." If you click "Selected games," also select the games you want to sync.
4. Click Apply.
If you just load the free iPod games, the four simple steps are perfect for you to put the games on your iPod. While if you have an issue with any game purchased from the iTunes Store, first verify basic functionality and then follow basic troubleshooting below.DVD To PSP Converter help you convert dvd to psp video, and DVD movies to MP4 for playing on PSP.
Note: Games available on iTunes are designed specifically for the iPod nano (3rd generation), iPod classic, and iPod (5th generation). They cannot be played on your computer, nor are they compatible with other iPod models or iPhones.
Verify Functionality
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Effect Setting: Options are contrast, brightness for video and volume for audio.
Drag the slider bar for Brightness, Contrast, and Volume to preview the effect on the right column.
If the DVD image does not display correctly, you can tick the checkbox for "Flip" to fix it.
Remember to hit “Apply”. Hit "Apply to Child Chapters" if the file you select is a title, or "Apply to All" if the file you select is a chapter. Otherwise, you may click the "Reset" button to gain the default settings.Mod Converter for Mac also helps you to edit your Mod file and optimize it.
It also allow users to crop DVD and define the size of video screen and which part you want to covert to video as you wish.To set your iPod to output the signal to the TV, follow these steps:
1. Scroll to the Videos entry on the main menu, then press the Select button to access the Videos screen.
2. Scroll to the Video Settings entry, then press the Select button to access the Settings screen.
3. Set the TV Out setting to On if you want the iPod always to output the video to TV, or to Ask if you want the iPod to prompt you first.
4. Make sure your iPod is set to output the right kind of TV signal for your TV: NTSC or PAL. NTSC is primarily used in North America and Japan, while PAL is used in most European countries.MKV Converter can convert MKV files to AVI, MKV video to MP4, MKV to 3GP/3G2 and can convert MKV files to video for your iPod, iPhone, PSP etc.
5. For the Wide-screen setting, choose On or Off to suit your TV or your tastes.
6. Press the Menu button to return to the Videos screen.
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Pavtube DVD Ripper for Mac provides a wide range of profiles with appropriate settings. Users can use profiles with default settings or define the values of all parameters by themselves.Slide the connector into your iPod's headphone port, connect the yellow, red, and white connectors on the other end of the cable to the corresponding RCA plugs on your TV, and you're in business. If you have an iPod Universal Dock, you can connect the iPod A/V cable to the dock's line-out port instead. You can then keep the A/V cable plugged in when you remove the iPod from the dock.
Second, select the titles you would like to do editing and if you don’t know much about the movie you import, click the preview button to make sure that you are editing the right titles or chapters. Software for 3gp 3g2 video converting, convert any video to 3gp 3g2.And the hit the button of “Edit” to adjust the effect, trim or crop the videos.
Third, now let’s start the editing. Pavtube offers three main editing sections, effect setting, trimming and cropping.
4: Trim video
Click the "Trim" button and a dialog pops up. You can set the time of the clip here. You can rip any your DVD to YouTube and Myspace supported FLV formats easily. You can also upload only a clip of your DVD movie
5: Crop video There are two methods available to crop your video: You can crop your video by selec your video mode or set crop values.
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1. For apple Portable Player, You must download and install itune, If you haven’t, get them at
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Or get a video guide at
2. How to put video on zune:
Zune Software can help us to put Zune compatible videos on Zune player. It can be free download from
Zune software can import audio files in unprotected WMA, MP3, AAC; photos in JPEG; and videos in WMV, MPEG-4, H.264.Well to play iPod video on a TV, you don’t need to prepare much, an iPod with Video and A/V cable as well as a cable TV, which is enough.FLV converter for Mac is also a flash video editing tool. Let’s rock and roll.
The simplest and most direct route is to get a cable that plugs into the iPod and the TV. You use the iPod's controls to start and stop play and use the iPod's screen to navigate the menus and set up the video. The iPod's menus don't appear on the TV screen, but as you're holding the iPod, this isn't a problem.

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You may have the need to do some editing on your DVD movie and convert them with the customized editing to AVI, MPEG, WMV and 3GP video. This will be very interesting, since you are creating kind of new movie all by yourself.
To edit the DVD video, you need to find a DVD decrypting application, or DVD ripping software which provides editing options as much as possible. I am using Pavtube DVD Ripper, so, today, I just take this popular for example.
First, you need to import the DVD movies to the DVD ripping software.There is also the Mariah internet fan organization.
Users can choose the format of snapshots, max process and specify a folder for the snapshots etc.
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The following steps are what different from splitting DVD movie.WAF converter supports more than 20 well known formats.
1.Select two or more chapters to merge, or there is no necessary to tick the option of Merge into one file.
2.Tick the checkbox of “Merge into one file” and hit the “Convert” button to convert them to one video.
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The DVDs, you may say, costs more. Yes, it is true, but you don’t need to buy DVDs, you can record DVDs all by yourself just with a DVD Recorder. As we all know, iPod only allow users to enjoy video or music on iPod and you cannot transfer the audio/video files everywhere you want if you have bought movies from Apple Store.User Interface Flash Tool Tip Components Classic Tooltip. With, you can convert any DVD to video that can playback on iPod, and if you choose, you can convert DVD to other handheld devices. No more limitations.
Now, the first thing you need to do to achieve playing TV shows on your iPod is to record your favorite TV shows. And burn them to DVD disks with a DVD burner.
After you have got DVDs, you can start converting DVD to video with the DVD to iPod Converter, I recommend you to try. This DVD to iPod Converter allows you to edit the DVD video before converting it to iPod video, and you can cut the commercials out through trimming feature.

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It is used to convert DVD to MP4, AVI, MOV, M4V, 3GP, 3G2, MPG, MPEG, FLV, SWF, MKV, etc. And it can also convert DVD audio to MP3, M4A, AAC, AC3, WAV, OGG etc. My friend downloaded stuff off there a week after its release that was perfect quality.this will help you...In addition, it can convert DVD to iPod, iPhone, Zune, Creative Zen, iRiver, PSP, Xbox360, Pocket PC and Apple TV etc.Section1 Split DVD
Step4: Add video by dragging it to the storyboard. Make sure your cursor is where you want it on the timeline because the program will automatically place your audio track where your cursor is. You will notice your audio track goes into the audio space on your timeline. There is also the Mariah internet fan organization.To edit audio follow the same steps as the video.
Step1: Insert the DVD to the DVD ROM.
Step2: Launch Pavtube DVD Ripper and Click the button of “DVD Rom” or “DVD Folder” to load the entire DVD.
Step3: Click the icon of “+” before the Title name and the movie is split into different chapters. Select your favorite chapter by ticking the checkbox before each chapter. If you are not sure whether it is the part you want to convert to video, you can select it by hit the chapter name and then hit the preview button below the preview windows to check it.
Step4: If you don’t want the entire split chapter, you can cut the duration you need only, this is also true with clipping the entire DVD movie.
Step5: Hit the convert button to start Converting.
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To merge different split chapters into one video, you also need to insert the DVD to DVD Rom, launch the and load the entire DVD through clicking “DVD Rom” or “DVD Folder”.
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Once you have the software installed make the mp3 no more than 3mb and save as any of the following: .amr, .qcp, .wav, .midi.It can help you convert video to wmv format.Click the "Effect" button and a dialog pops up, you can set your video effect here.
Brightness: Drag and click the Brightness adjustment bar to set the brightness of the video.
Contrast: Drag and click the Contrast adjustment bar to set the contrast of the video.
Saturation: Drag and click the Saturation adjustment bar to set the saturation of the video.
Volume: Drag the Volume adjustment bar to set the volume of the audio.