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Old 04-25-2013, 06:26 PM   #1
DiskChris
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Registered: Jul 2012
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Mplayer Video Capture Old PC


My desktop computer died, so I replaced it with a laptop. I saved the PCI capture card out of it, and put it in a junk 933 mhz P3 lyin' around... I want to digitize some vhs tape, but the P3 doesn't seem fast enough....Its running debian squeeze. I have managed to get it to record but not without skipping frames and lagging...I am using mplayer as on the commandline as the capture program. Its running just a bare commandline, no x or anything. Any options I can feed mplayer to cut down on the cpu usage? I would think 933 mhz would be fast enough...I don't know how fast the IDE drive is thats in there...Quality isn't a huge deal (the capture card is a piece of crap sabrent anyway)

Last edited by DiskChris; 04-25-2013 at 06:34 PM.
 
Old 04-27-2013, 03:03 AM   #2
Andy Alkaline
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Would mplayer's -noframedrop option apply to this situation?
 
Old 04-27-2013, 12:47 PM   #3
business_kid
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So you're not seeing this, you're not hearing it, it's just going straight to video file?

Mplayer uses throws up ideas on that

Quote:
Your box isn't fast enough tp play this!! Try x,y, or Z
 
Old 04-27-2013, 05:11 PM   #4
teckk
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Quote:
but the P3 doesn't seem fast enough..
No. it isn't.
Quote:
I have managed to get it to record but not without skipping frames and lagging.
How, with -dumpstream -dumpfile?
Quote:
Any options I can feed mplayer to cut down on the cpu usage?
Yes there is, depends on the video type.

For mpeg1/2 or mpeg4 try adding -nodouble or mplayer -lavdopts lowres=1
-vfm ffmpeg will use half-res decoding to speed things up as well.

for H264 try mplayer -lavdopts skiploopfilter=all file.mkv
might cause artefacts like sudden color changes, in this case try e.g. "nonref" instead of "all"

(use -lavdopts skipframe=nonref:skiploopfilter=all:fast=1 for even more speedup, skipframe also works with VDPAU.)

First show how you are capturing the video to file. What kind of video is it? mpeg2? Can you make a raw video dump to file and then encode it later? Show what you are doing.
 
  


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