| The quality is not good enough 1. Why the DVD movie quality is not as good as the computer version? Several factors take into account for movie quality: - Resolution (measured in pixel, width x height) - Smaller resolution will have lesser quality - Compression - Different compression method affects quality. No compression means no loss image quality. - Frame per second / fps (how many images are displayed per second) - Higher fps will produce smoother movie There are 2 types of DVD standard specification:
Compare the above factors with the computer version (SWF or direct preview from the product). For example: InAlbum 2.x Resolution: 732 x 549 pixels Compression: NONE (no compression) Frame per second: 12 InAlbum 2.x preview resolution is slightly higher and the fact that it is different compared to NTSC and PAL, the resulting DVD movie is resized (converting from InAlbum resolution to NTSC/PAL resolution). This process will affect quality. Why cant we create DVD movie with the same resolution as InAlbum 2.x? No, we cant because we must follow the DVD standard, PAL or NTSC. InAlbum 2.x preview does not use compression at all compared to DVD movie that uses MPEG2 compression. Thus, InAlbum 2.x has better image quality. Why cant we create DVD movie without compression? No, we cant. Again, we must follow the DVD standard, PAL or NTSC. Otherwise it wont be recognized as DVD (it wont be played in a DVD player). 2. Why the SVCD and VCD are not as good as DVD? SVCD (Super VCD) and VCD are old video formats. SVCD specification:
VCD specification:
As you can see above, SVCD and VCD resolutions are much smaller compared to DVD. Reference: VideoHelp.com VCD VideoHelp.com SVCD VideoHelp.com DVD Wikipedia.com DVD |