ADS DVD Express DX2 & HD PVR

couimet · Post by **couimet** » Fri Dec 22, 2006 5:37 pm

I just upgraded my Satelite Receiver/PVR from a Bell ExpressVu 5900 standard definition to 9200 high definition.

Problem 1. When outputing 16:9 video to composite video, the DX2 creates a vertically stretched 4:3.

This can be corrected in VS 9/10 by setting the project to 16:9 and then setting "Original Size". However ...

Problem 2. It's a very long file creation; i.e. longer than the play time of the video.

Problem 3. It results in an MPEG 2X the original size.

Is there a solution to any or all of these three issues? Thank you ...

jchunter · Post by **jchunter** » Fri Dec 22, 2006 6:29 pm

The only way (that I know of) to encode high definition video with a bitrate of 9.2MB is to compress it more than Mpeg2 is capable of doing. This means that your receiver must be using mpeg4 or some close relative. This would explain why transcoding to Mpeg2 takes a long time and doubles the file size.

Transcoding has to be managed carefully. You have to know what the original compression format was and set the output properties properly. If you don't, you could easily lose the high definition quality of the original recording.

couimet · Post by **couimet** » Fri Dec 22, 2006 7:07 pm

Thanks. The DX2 input is from the composite video. It's 16:9 but not likely HD. The 100 minute 4:3 MPEG is 2.7Gb. But rendering it to 16:9 through VS gets it to almost 6Gb.

jchunter · Post by **jchunter** » Fri Dec 22, 2006 7:36 pm

If the video is emanating from the composite video connector, it would be fairly low quality analog video. It would have to be digitized by an analog capture device and 4000Kbps is more than it needs. Your capture device may digitize directly to DVD-Compliant Mpeg2. So when you edit and render this file, set to video bitrate to VBR =4000 (variable bitrate), 720x480/576, Field order is probably Upper Field First. By maintaining the bitrate of the captured video, you will minimize any "bloat" in the output file.

Edit: rereading your post, you say the 4:3 Mpeg file is wide screen. Your capture properties were probably set incorrectly to 4:3. If this is the case, you would be better off capturing again with properties set to 16:9.

couimet · Post by **couimet** » Fri Dec 22, 2006 8:11 pm

Thanks John.

The ADS DX2 assumes 4:3, I can't set it to 16x9.