[FFmpeg-user] [ffmpeg-user mailing list] Questioning aboutencoded file size with various motion estimation algorithmsin H.263 codec

[문준형]

As we know, we can change motion estimation algorithm by specifying "-dia_size" option value.

I got following result file sizes.


When full search (dia_size > 1024), encoded file size is 258,908 bytes.

When funny diamond search (dia_size == -1), encoded file size is  244,926 bytes.

When sab diamond search (dia_size 768 && dia_size512 && dia_size256 && dia_size2 && dia_size
받는사람: ffmpeg-user at ffmpeg.org
보낸날짜: 2013-02-19 18:41:38 GMT +0900 (Asia/Seoul)
제목: Re: [FFmpeg-user] [ffmpeg-user mailing list] Questioning aboutencoded file size with various motion estimation algorithmsin H.263 codec


문준형  yonsei.ac.kr> writes:
 
> I got result files after encodings with same parameters 
> (quantization level, GOP size), only changing motion 
> estimation algorithms (epzs, full search, diamond search, 
> etc.)
 > 
> As I know, encoded file size for full search is smaller 
> than that for any other motion estimation algorithm.
 > 
> However, I found that file size for full search is the 
> biggest !!
 
Could you add some information so whoever is interested 
could try to reproduce?
 
Carl Eugen
 
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