nandub/vd recording?

[Thrawn]

hi i just tried nandub for recording video files from my hauppauge tv card. I am just satisfied with freeVCR 1.2 but i wanted to give it a try because u can record 768x5.. too with nandub (this worked, in freeVCR it just works with 352x288 (seems to be max from hauppauge software but nandub seems to be able to make 768 too)

the prob i occured: i set mpeg 3 128 kb 48khz and divx4.11 with several different kb/sec and always got a file near to 160 mb for 15 secs? is this the normal way to use divx? (doesnt seem so, with freeVCR and reencoding it with my commercial software i get 20 minutes in finest quality in 160 mb)
how do u make the record smaller at once while recording? or do u encode it again after recording to make it smaller?

[benderman]

I always reencode the captured files, because I always want to use some of VD's (slow) filters and encode it in two-pass-mode. So I capture with MJPEG,Indeo or DivX-fast always with highest bitrate. I always capture the sound with raw PCM because it seems to me that comprssing the audio while capturing can cause unsynced video.

768x576x25 fps in uncompressed 24bit truecolor needs more than 30 MB(!) per second only for the video. While DivX only allowes bitrates up to 6000kbps the video should have less than 1 MB per second. 160 MB per 15 seconds seems to be uncompressed or any other codec. Select DivX at "videos -> compression" (or shift-C) and start "capture -> capture video" (or F6-key).

[techno]

Why capture directly to DIVX? use No Recompression and split the files over several files using AVI_IO. Then load these file in virtualdub and append the files then use DIVX to compress them.

If u capture directly to DIVX:

use divx 3.11alpha fast motion 6000 bitrate.

It gives u very good quality.

I always re-encode captured files myself to MPEG2 and keep re-encoding till the quality is BROADCAST. Then I use DIVX 3.11alpha fast motion with 6000Bitrate which gives outstanding results, no blocks! Less file size!

Techno

[benderman]

@techno: I read that "divx 3.11alpha fast motion 6000 bitrate"-stuff in every second post you write. It's not the final solution. For best quality you need to use different codecs for different material. DivX-fast for high-action-scenes, DivX-low for low-action-scenes. Best way would be to use nandub's two-pass-encoding which will get the best from both codecs and you can calculate the exact filesize.

[techno]

Yes, I know benderman that it is not the solution. I am just giving my input from my experience. Still, I think that the way I do it, DIVX fast motion works well on low motion scenes as well as fast motion scenes.

Techno