theYinYeti Posted January 29, 2006 Report Share Posted January 29, 2006 Hello, My aim is to get the most of my old VHS tapes. My PC is not powerfull enough to clean and encode video from Composite1 in real-time. So I thought I should first get the "raw" video and sound (real time), and then post-process this video. So, here's what I do: FIRST PASS (line splitted for better readability) mencoder -tv driver=v4l2:device=/dev/v4l/video0:input=1:fps=25:norm=SECAM:alsa:amode=1:decimation=2: quality=75:width=384:height=288 -o /local/tmp/test3.avi -oac copy -ovc copy -ofps 25 tv:// This way, I get a half-size video (384*288) very near the quality I get from Composite1/xawtv. There is one drawback: each minute of video is roughly 250MB big !! That's why I don't use the full size (768*576)... even though I wish I could... The post-processing must be done to reduce the file-size, and I also hope to clean it; indeed, here is a screenshot of the video (that's how the VHS is...); I'm sorry, it is a big file, I don't have the tools on this PC to reduce it: http://yves.gablin.club.fr/test3-1.png SECOND PASS So I tried to clean and reduce the video this way, getting the general look of this command from what "File2DIVX3Pass" is trying (and failing) to execute, and refining it from what I understand from mencoder manual page. (splitted for better readability) mencoder -noskip -fps 25 -ofps 25 -vf hqdn3d,pp=hb/vb/dr,cropdetect -oac mp3lame -lameopts cbr:br=128 -ovc lavc -lavcopts vcodec=mpeg4:vhq:vqmin=2:vqmax=31:keyint=25:vbitrate=29232:vpass=1 -o test3p1.avi test3.avi The result is awful ! Are the optons I use wrong? Or is there an entirely better method? Thanks for any help, Yves. Quote Link to comment Share on other sites More sharing options...
devries Posted January 29, 2006 Report Share Posted January 29, 2006 I always use this: mencoder *.mpeg -ovc lavc -lavcopts vcodec=mpeg4:vpass=1 -oac copy -o outputfile.avimencoder *.mpeg -ovc lavc -lavcopts vcodec=mpeg4:vpass=2 -oac copy -o outputfile.avi Looks good enough. Then there are various kommander scripts (look on kde-apps.org) that provide a gui for morst of the mencoder options. That might be usefull. Quote Link to comment Share on other sites More sharing options...
theYinYeti Posted January 29, 2006 Author Report Share Posted January 29, 2006 I'll try (next week probably, because my son is really sick right now), but I doubt my PC will handle that... it may, though... Yves. Quote Link to comment Share on other sites More sharing options...
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