[Mp4-tech] About CIF and SIF

[Parag Chaurasia]

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  Hi Jefferson,
    CIF (Common Intermediate Format) dimensions are ALWAYS 352 x 288.
  SIF (Source Input Format) is somewhat tricky.
  SIF (NTSC) is 352 x 240 and SIF (PAL) is 352 x 288, "rounded to a multiple of 16". As such, SIF (NTSC) is 360 x 242 and SIF (PAL) is 360 x 288.
  Hope this helps....
  Regards,
  Parag.
On Tue, 20 Jan 2024 Jefferson wrote :
>Hi,
>         What is the difference  between CIF target and SIF target? What is the related applications
>for them? If I get the decoded frames with 25fps, but the TV system is NTSC, 30fps, how to convert
>the video from 25fps to 30fps? Or how to convert between 25fps system and 30fps system?
>
>Regards,
>
>Jefferson
>
>
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