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Originally Posted by Audionut
My bad, I thought you had increased psnr with 16 b-frames.
Ignore,
If a bitrate of 350kbps is what your shooting for, then follow foxyshadis advice.
Encode with 16 b-frames but with crf 23 or 22, so that the resulting bitrate is closer to 330-350kbps.
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Thanks for clarify, indeed, I'm not shooting for any bitrate, I'm new to x264, so just interesting in trying to see how low the bitrate could be to encode one of my video. So I want to try any options to make it as low as possible.
Also, another question is, since I've got 89-91 for SSIM, I think this score may be pretty high, right? Are there any former experience from any one can share with me that what SSIM & PSNR value you've got for your videos which you think its quality is pretty good. Is there any relationship between SSIM/PSNR with visual quality? I mean for example, a SSIM above a special value could be regarded as a rather good quality.