Hi there, First, I agree with all the comments made about "if this relates to any legal issue/incident" and "do you really want to know". These are eminently sensible and helpful comments.
However, if they do not apply, the following information may be of assistance IF the video is 3GP. I saved the information (as is) from a site I visited ages back when I had a mobile which took 3GP video. The site has since disappeared. I can vouch that the images where cleaner. Note my use of the word 'cleaner'. As a moving image it was certainly better, as a still image it was merely better, BUT nothing like you'd see on CSI :) If the video is not in this format, it would be helpful if you can let us know what format it is in. ********************************************** Easy steps to improve 3GP video quality August 20, 2006 at 12:25 am · Filed under Gadgets Quality of 3GP movies recorded with my Sagem myX6-2 isn’t pleasing. This is common for every mobile device camera: video has low resolution, H.263 codec makes many artifacts (it is designed for bandwidth below 64kbps), small camera sizes cause shaky image, etc. However 3GP files can be postprocessed and interpolated to higher quality. Here is how I accomplish this using free tools: Basic processing mplayer (http://www.mplayerhq.hu/) allows playing 3GP files. mencoder is an bundled application that allows encoding result into another format. Both applications support video filters, read below about basic usage and compare results applied on a single video frame: 1. Original 3GP file Video has resolution of 176×144 2. Resizing to 346×260. Command used: mplayer -vf scale=346:260 file.3gp Here, compression artifacts are clearly visible. Let’s try to reduce them. 3. 2xsai - 2x scale and interpolate algorithm + noise removal. Command used: mplayer -vf 2xsai,scale,denoise3d file.3gp As you can see, block artifacts are reduced, areas of the same color are smoothed. We’re ready to write result into a new file. 4. Output to file with lavc compression (best quality): mencoder -ovc lavc -o outputfile.avi -vf 2xsai,scale,denoise3d file.3gp Download and compare: original 3GP file (934k), original video in AVI format, lavc codec (2.5M), final result (3.3M). Advanced processing Mobile devices video recordings often suffer from other problems than low quality, that cannot be expeled with mplayer video filters. This is for example luminance variations beetween frames and shaky image. Advanced processing can be archieved using VirtualDub (http://www.virtualdub.org/) - a great video capture/processing utility, released under GPL. It is available only for Windows, but runs smoothly under Wine (Windows Emulator). Note! VirtualDub cannot process 3GP containers. Decompress them with this command: mencoder -o outfile.raw -ovc raw infile.raw. Functionality of this software can be extended with plugins, here are some more useful ones: * Smart Smoother by Donald Graft - filter performs structure-preserving smoothing. Works good for removing video noise and MPG/JPG artifacts. * Deshaker by Gunnar Thalin - eliminates camera shakiness and makes panning, rotation and zooming smoother. * Deflicker - filter that corrects frame luminance variations over time. **************************************** Regards, Patrick -- Registered GNU/Linux User 368634 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
