[x264-devel] buffer size for qcif video ?

[Schier Michael]

just very quick:
1.5 revers to 1 byte luma sample + 1/4 byte for each chroma sample. it
depends on the yuv format how the colors are storend and whether the
factor 1.5, 2 or 4 is used (yuv420, yuv 422, yuv444...)

for my part: i'm currently working with yuv420, working as following:
* the first 38016 bytes refer to luma samples
* the next 9504 bytes refer to cr
* and the last 9504 bytes refer to cb

you may find the attached source code helpful...


Am Dienstag, den 30.11.2010, 12:30 +0100 schrieb pedro chaparro:
> hi, every one, i'm a begginer on video coding programming, i wanna
> read a color qcif yuv file sequence using c++, i've read from some
> code that define a buffer for qcif equal to 38016, it value come from
> 176*144*1.5 , i dont understand what it 1.5 value means? could anyone
> help me ? and there is some book or tutorial to follows about video
> processing using c++? thanks 
> 
> -- 
> Pedro Alonso Chaparro Valero R&D Engineer
> Ciudad Politecnica de la Innovación
> iTEAM - Mobile Communications Group
> Polytechnic University of Valencia
> C\ Camino de Vera S/N, Edificio 8G
> 46022 Valencia, Spain
> _______________________________________________
> x264-devel mailing list
> x264-devel at videolan.org
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