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Thursday, August 21, 2014

Downloaded parts of youtube videos combined them.

mencoder on linux can merge files if they are all encoded the same way. So, the idea is to re-encode them to be the same. If you do not have lot of motion 1000bits/sec bit rate is fine for a 720p video. If there is lot of motion try 2500 which is what you see usually on Netflix.

mencoder -ovc lavc -lavcopts vocdec=mpeg4:vbitrate=1000 -oac faac file1-in.mp4 file1-out.mp4

mencoder -ovc lavc -lavcopts vocdec=mpeg4:vbitrate=1000 -oac faac file2-in.mp4 file2-out.mp4
mencoder -ovc lavc -lavcopts vocdec=mpeg4:vbitrate=1000 -oac faac file3-in.mp4 file3-out.mp4

mencoder -ovc copy -oac copy file1-out.mp4 file2-out.mp4 file3-out.mp4 -o merged-out.mp4

If you are using Windows platform, try this
http://mplayerwin.sourceforge.net/downloads.html

If you are using Mac platform, try this
http://matt.fragilegeek.com/mencoder

Disclaimer: I did this on Xubuntu 14.04. Just used synaptics package manager to install youtube-dl and mencoder. I am not the right person to tell you how to install mencoder on other platforms. Once you do and have the right codecs, the above command line should work. Good luck.



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