Differences between MFX_RATECONTROL_VBR and MFX_RATECONTROL_AVBR

Differences between MFX_RATECONTROL_VBR and MFX_RATECONTROL_AVBR

Hello, I don't find differences betweenthe behavior of MFX_RATECONTROL_VBR and MFX_RATECONTROL_AVBR. I have tested both of them and the size and quality of files are similar. I thought that the Average bitrate control could increment the file size in order preserve the quality of the image.

Please, could anyone tell me the difference?

Thank you in advance.

2 post / 0 nuovi
Ultimo contenuto
Per informazioni complete sulle ottimizzazioni del compilatore, consultare l'Avviso sull'ottimizzazione

Hi,

THe observed difference between the two will depend on the actual bitrates used. If you are working with low bitrates, you should see a difference, but if your using higher bitrates, the difference in filesize (and quality) would be simular. Also the differnece would more noticable onframes with abrupt/spontaneous movement.

In general MFX_RATECONTROL_AVBR is equal or better average quality than MFX_RATECONTROL_VBR, and is best at producing a predictable filesize, but there are many occations where both methods produce very simular results.

-Tony

-Tony

Accedere per lasciare un commento.