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Old 01-02-2009, 03:18 PM
zen_in_linux zen_in_linux is offline
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Default Video Conversions With Linux

Here are some initial thoughts on using the Creative Zen in Linux to add to some of the very useful information elsewhere in this forum.

I am using Suse 11.0.

I used the udev (hotplug) rules described on this site http://www.mossroot.com/worlds/2008/...x-fi-to-linux/. Having followed the guidance on that site, I found I could easily mount the Zen X-fi as part of the Linux filesystem. I created the directory $HOME/zen and then from $HOME issued the command mtpfs zen which meant I could browse the filesystem from the command line or using a file manager (Konqueror). Not all file operations are available: you can create directories and add files but you can't seem to be able to use mv or overwrite a file (not a major issue).

Having spent a while experimenting with ffmpeg and mencoder I have had success with the following scripts.

This is using mencoder for two-pass encoding of a 16:9 video to divx with no change to the audio:

mencoder [infile] -vf scale=320:180,harddup -of avi -ffourcc DIVX -ovc lavc -lavcopts vcodec=mpeg4:vpass=1 -oac copy -o /dev/null

mencoder [infile] -vf scale=320:180,harddup -of avi -ffourcc DIVX -ovc lavc -lavcopts vcodec=mpeg4:vpass=2:mbd=2:trell -oac copy -o [outfile]

One of the essential elements of this script is the -ffourc option. I couldn't get the transcoding to work with the libavcodec codecs (i.e. -ovc lavc) without that option.

The mencoder -ffourcc option in ffmpeg is -vtag. The following also worked for me (this time on a 4:3 video):

ffmpeg -i [infile] -f avi -vtag DIVX -r 30 -s 320x240 -vcodec mpeg4 -b 1000K -acodec libmp3lame -ab 320K [outfile].avi

For those interested in downloading and transcoding Youtube videos there is an excellent command-line utility called clive which I installed using the Suse installation utility zypper. Further details are available here

The clive utility has a command-line re-encoding option, meaning you can have a single command line for downloading a Youtube video, transcoding it, and outputting the result onto your Zen mounted in Linux.

Last edited by zen_in_linux; 01-03-2009 at 09:23 AM.
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creative zen, ffmpeg, linux, mencoder, video, zen, zen video, zen x-fi

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