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7th February 2008, 05:47 | #1 | Link |
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Join Date: Jul 2003
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Bits per pixel value for quality x264?
I'm using bit per pixel koeffitient to calculate target size or bitrate:
Size (kb) = W * H * Num_frames * k/ (8 * 1024) Where W* H * N total number of pixels. k - bits per pixel Bitrate (kbit/s) = W * H * fps * k / 1024 Which gives me clear quality-to-koeffitient dependency, independent from resolution or fps. I.e. for XVid I use k = 0.15-0.4 bit per pixel for h263 quantization, 0.5 for MPEG quantiztion. ____________________ Based on that, what k (bits per pixel) should be for x264? From what I've got, for 1920x1080 used 10000kbit/s, k = 0.16-0.17. Could you express your feeling about good x264 hiqh quality rip. What k are you using? Just want to put it to my Excel. I don't feel like using 1000 kbit/s from profiles for different resolution is a good thing Thank you! |
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