[Mp4-tech] how to convert cif to qcif

[sakthi narayanan]

hi,
 u can itself write the code for converting cif to qcif format.
i.e cif format file contains 352 *288 samples.
u can convert the CIF to QCIf by applying downsampling or avg. sampling method.
with regards,
sakthi
On Mon, 18 Apr 2024 Tuukka Toivonen wrote :
>On Fri, 15 Apr 2005, Amy, Mei-Hsuan Lu wrote:
>
>>Does any one know any good algorithm/utility to convert CIF format to
>>QCIF format (yuv file)?
>
>Mencoder can do it on command line, something like:
>
>mencoder -rawvideo on:w=352:h=288:fourcc=i420 -vf scale=176:144,format=i420 -ovc raw -of rawvideo input.cif -o output.qcif
>
>I haven't tested this, so you need read the documentation and add
>any parameters I forgot:
>http://www.mplayerhq.hu
>_______________________________________________
>NOTE: Please use clear subject lines for your posts. Include [audio, [video], [systems], [general] or another apppropriate identifier to indicate the type of question you have.
>
>Note: Conduct on the mailing list is subject to the Antitrust guidelines found at http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20050419/fd891b42/attachment.html