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-   -   Recording Video: PICVideo MJPEG settings (http://www.digitalfaq.com/archives/capture/3212-recording-video-picvideo.html)

nicksteel 04-08-2003 07:18 AM

PICVideo MJPEG settings
 
:?: When capturing TV from cable (no cable box), what settings are best for the MJPEG codec? I'm currently using setting 19, RGB24, 29.970 at 352x480. I get jerky motion in the capture, although no frames are being dropped.

My target is KVCDx3 MPEG-1 352x480

WinTVGO 190
P4 2.53
VirtualVCR

Boulder 04-08-2003 11:49 AM

Try YUY2 colorspace, it's generally the recommended one. Is the jerkiness in the MPEG file or in the original, captured clip?

nicksteel 04-08-2003 12:17 PM

Quote:

Originally Posted by Boulder
Try YUY2 colorspace, it's generally the recommended one. Is the jerkiness in the MPEG file or in the original, captured clip?

Will try YUY2. The jerkiness appears more in the MPEG file than the the captured avi.

jamesp 04-08-2003 01:21 PM

Quote:

Originally Posted by nicksteel
Quote:

Originally Posted by Boulder
Try YUY2 colorspace, it's generally the recommended one. Is the jerkiness in the MPEG file or in the original, captured clip?

Will try YUY2. The jerkiness appears more in the MPEG file than the the captured avi.

Check you're not encoding to mpeg at 23 fps (the KVCD default)

nicksteel 04-08-2003 01:23 PM

Quote:

Originally Posted by jamesp
Quote:

Originally Posted by nicksteel
Quote:

Originally Posted by Boulder
Try YUY2 colorspace, it's generally the recommended one. Is the jerkiness in the MPEG file or in the original, captured clip?

Will try YUY2. The jerkiness appears more in the MPEG file than the the captured avi.

Check you're not encoding to mpeg at 23 fps (the KVCD default)

No, I'm changing the fps to 29.97 after I load the template.

MrTibs 04-11-2003 11:35 AM

I"ve experimented with PicVideo but abandoned it. Even at 19, my result was jerky after pulldown. I believe that PicVideo is not designed for interlased material so pulldown doesn't seem to work correctly. I also noticed that the quality wasn't up to what I wanted so I abandoned it.

You could try using Huffy which will give you 2:1 compresison or even try a YV12 lossless codec since YV12 allows for 20-30% more compression.

The doom9 forum has at least three experimental YV12 lossless codecs that will produce files 70-80% of huffy's files. They are slower but your P4 should handle it. One thing I do is to capture with Huffy, edit and filter through Avisynth then save back into Huffy. Since my final video sequence is only 352x240@24fps, the resulting file size is about 1/10th the size of my full Huffy capture.

tuco1979 07-21-2003 03:16 PM

Re: PICVideo MJPEG settings
 
Quote:

Originally Posted by nicksteel
:?: When capturing TV from cable (no cable box), what settings are best for the MJPEG codec? I'm currently using setting 19, RGB24, 29.970 at 352x480. I get jerky motion in the capture, although no frames are being dropped.

My target is KVCDx3 MPEG-1 352x480

WinTVGO 190
P4 2.53
VirtualVCR

Are you deinterlacing it at all? Mpeg1 doesn't support interlace videos but mpeg2 does.


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