[FFmpeg-soc] SoC query

[Deep Pal]

On Tue, Mar 18, 2008 at 3:29 PM, Mike Melanson <mike at multimedia.cx> wrote:
> Deep Pal wrote:
>  > Of course I understand that, say one applicant mentions now and the other
>  > mentions later and both qualify through the qualifying task. Will the
>  > guy who mentioned
>  > earlier be getting more priority.
>
>  The formal process works like this:
>
>  * All interested students submit entries through Google's web interface
>  starting on March 24.
>  * The FFmpeg mentors privately rank and comment upon the various
>  applications in Google's web interface.
>
>
>  > Yes, which raw files to start encoding with.
>
>  Any movies you wish. I know of raw YUV reference streams, but they are
>  interlaced. And they're huge to download.
>
>  I'm not certain about this, but perhaps you may wish to start with video
>  compressed with VQ methods since the data hasn't been quantized in the
>  conventional JPEG/MPEG way already. Just a feeling; someone will call me
>  on this if I'm wrong. Here are some VQ samples:
>
>   http://samples.mplayerhq.hu/game-formats/idroq/
>   http://samples.mplayerhq.hu/V-codecs/SVQ1/
>
>
>  > And also how to go about with the testing?
>
>  My first impulse would be something like this:
>
>  * Transcode video to sequence of JPEG files as a baseline reference:
>  - mkdir baseline-reference:
>  - ffmpeg -i <video> baseline-reference/%05d.jpg
>  * make your changes, recompile
>  * Transcode video to a new sequence of JPEG files:
>  - ffmpeg -i <video> optimal/%05d.jpg
>
>  Are the files in the optimal/ subdirectory valid (use a viewer to
>  visually inspect)? Are they consistently smaller than the files in
>  baseline-reference/? If so, then you might have achieved the goal.
>
>  And when you get to this point, we should probably run another test to
>  ensure the various files are equal after entropy coding (I think they
>  should be).
>
>         Hope this helps...
>  --
>
>
>         -Mike Melanson
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>

Thanks a lot Mike for the guideline and all the help.
I will get back once I have reach the stage you have mentioned.

Regards,
Deep