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[linux-dvb] Re: [PATCH] new video event and ioctl



Felix Domke wrote:

Johannes Stezenbach wrote:

The V4 API has:
   unsigned int frame_rate; /* in frames per 1000sec */
I'm against this.

The reason is that arbitrary framerates are not allowed in MPEG-2 (correct me if i'm wrong, i'm currently too lazy to read 13818-2 again...), and there's no hardware being able to playback this simply because there's no TV standard for arbitrary framrates.

Felix, actually the value defined is:
frame_rate = frame_rate_value * (frame_rate_extension_n + 1) ÷ (frame_rate_extension_d + 1)
where frame_rate_extension_n is a 2 bit and frame_rate_extension_d a 5 bit integer.

Carsten




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