Mobility Site - View Single Post - Techniques and tricks to make hi-quality low bitrate VGA-res MPEG's

02-28-05, 05:17 AM

We found ways to make very high quality VGA-resolution MPEG's (can be played with PocketTV or Betaplayer on the Pocket PC, and by WMP on the desktop) at relatively low bitrate, using some advanced features of tMPGEnc (a free MPEG converter available from www.tmpgenc.net ), combined with some other tools and techniques.

The result is DVD-quality at 1.7 Mbps or less (i.e. 2 to 3 times lower bitrate than DVD).

You can see one example here:

http://pockettv.com/mpg/vga/5e-640x480-1.7Mbps-v3.mpg

If you compare the file above with our previous demo file, you will see a noticeable improvement in quality with the same file size (in the new file, there is no blocking artefacts in the fast motion scenes).

We can tell you how we produced this hi-quality demo and provide the templates that we have used, and you should be able to generate MPEG files of the same quality from your DVD's (one movie will fit in a 1GB card).

Depending on the type of video contents, this quality can be achieved with even lower bitrates (e.g. 1.4 Mbps).

Please have a look at our test file, and if you are interested to know how we achieved this, let us know here.

02-28-05, 05:17 AM	#1 (permalink)
PocketTV Team Guest Posts: n/a	Techniques and tricks to make hi-quality low bitrate VGA-res MPEG's We found ways to make very high quality VGA-resolution MPEG's (can be played with PocketTV or Betaplayer on the Pocket PC, and by WMP on the desktop) at relatively low bitrate, using some advanced features of tMPGEnc (a free MPEG converter available from www.tmpgenc.net ), combined with some other tools and techniques. The result is DVD-quality at 1.7 Mbps or less (i.e. 2 to 3 times lower bitrate than DVD). You can see one example here: http://pockettv.com/mpg/vga/5e-640x480-1.7Mbps-v3.mpg If you compare the file above with our previous demo file, you will see a noticeable improvement in quality with the same file size (in the new file, there is no blocking artefacts in the fast motion scenes). We can tell you how we produced this hi-quality demo and provide the templates that we have used, and you should be able to generate MPEG files of the same quality from your DVD's (one movie will fit in a 1GB card). Depending on the type of video contents, this quality can be achieved with even lower bitrates (e.g. 1.4 Mbps). Please have a look at our test file, and if you are interested to know how we achieved this, let us know here.