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DVD Converter, DVD Ripper & DVD Burner Software and Tutorials for your Audio and Video Needs |
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AVI to MPEG Converter Tutorial using Fx MPEG Writer - Page 1 2For this tutorial we captured the Dolby and THX promo lead-in for a Laser Disk Movie. The clip is short but it has enough audio and video data to provide us with a good test while keeping us out of copyright trouble.
The capture mode and target format are somewhat limited by the net power of your computer system. For example, capturing to DVD quality on the average computer is a waste of time and resources. A typical 1,000 MHz P-IV will drop 15% of the frames. For our example we saved to an AVI file then converted to an MPEG-1 with VCD extensions and to an MPEG-2 with Super VCD extensions. Because our computer lacked the power and resources the MPEG-1 version played back better than the MPEG-2. See the chart at the bottom of this page for details.
There are standard resolutions, frame rates and bit rates for the various disk formatting schemes. You should consider your target audience's equipment when creating media. If for example you want all your friends with computers to be able to view your video, don't create a DVD disk. Computers must be equipped with DVD players and software to play back DVD. On the other hand, if you target audience will be watching your video on DVD players and never watching on a computer, DVD is the logical choice. If your target audience is mixed, VCD is probably your best choice although some DVD players don't play VCD. The chart below lists the various formats and their related specifications:
The amount of time required to save your file depends upon your computer's resources, the size of the input file, the bitrate, the frame rate and the number of concurrent tasks that your computers CPU is also running. Under any circumstances, saving a big file is going to take a long time so it might be wise to start your conversion to run during a time when you don't need your computer. Creating a Video CDA Video-CD contains MPEG-1 video sequences which conform to the "White Book" standard that was created by Philips and JVC in 1993. The first track of a Video CD contains the CD-i play program, the CDI, MPEGAV and VCD directories based on the ISO 9660 file system. The next tracks are in the format CD-ROM/XA-Mode 2/Form 2 Sectors and contain the MPEG encoded audio/video sequences that are listed in MPEGAV. Video-CDs can be played on CD-i players, some Video-CD players or on a PC based CD-ROM drives with CD-ROM/XA support and MPEG decoder software. VideoCD supports the following formats:
For our tutorial we used Nero Burning but the process is similar with any CD authoring software. We selected Video-CD from the New Compilation wizard and have checked the option to create a standard compliant CD...
We won't go through the detailed setting for Nero here since you might be using some other burning software. When the wizard closes we see a typical Windows explorer-like view in the right panel and the disk layout in the left. Because we're creating a Video CD Nero creates the folders CDI, EXT, MPEGAV, SEGMENT and VCD by default so all we have to do is drag our movie(s) onto the new disk image. Nero is smart enough to recognize complaint source files. If we had dragged the wrong format onto the video space it would have displayed an error message.
Creating a SVCDVideoCD V2.0 (VCD) is a standard used to save audio/video data to a CD to be played back by CDI or DVD players. The audio/video data streams are compressed with MPEG-1, Audio Level 2 and played in real time at 75 blocks per second. Because this format and audio/video data generally tolerate bit errors, the space that is normally needed for error correction can be used for MPEG data instead which increases the amount of user data in a block from 2048 to 2324 bytes per block. This gives the VCD 13% more capacity compared with MPEG file storage on a data CD. The Super VideoCD (SVCD) format is an extension of the VCD standard in which the MPEG-2 compression standard is used with variable bit rate coding which allows twice the bit rate of the VCD. As a result the SVCD also offers enhanced image quality, however total playing time is reduced when the full bandwidth is actually used. At maximum bit rate, an SVCD only stores around 35 minutes of video as against 70 minutes on a VCD.
The default folders created for Super Video CD are not the same as those we created for our VCD.
An (S)VCD is an XA disk with several Mode-2 tracks. The first track usually contains Form-1 blocks with the normal 2048 bytes per block and stores a CD-ROM (ISO) image so that the CD can be read by a PC. Certain files and directories are required by the standards:
The encoded files can be played on a PC provided a suitable package such as Windows Media Player is installed. DVD player software is required for MPEG-2. Other files and directories can be added to the CD-ROM. These are ignored by a player. (S)VCD also supports other special functions such as karaoke and hierarchical menus with pictures, but these are not used by Nero at the present time. Nero simply takes a list of MPEG or picture files and writes them to a CD in such a way that playing starts immediately with the first file, and the player's forward and reverse keys can be used to skip from file to file. You can set a pause that stops play at the end of every file. The pause is only a value in the description of the file so there is no need to create empty blocks; the pause can be very long or can even be set to infinite, in which case the player is stopped and waits for an input from the user. End. Back to Page 1 of AVI to MPEG Converter Tutorial |
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