Yahoo! JAPAN

2024/3/22 -At each level, the rate control selects quantization parameter (QP) values, that determine the quantization of transform coefficients. Increase in QP increases ...

2024/4/25 -DESCRIPTION. x264 core:164 r3108 31e19f9 Syntax: x264 [options] -o outfile ... QP QP is optional (none lets x264 choose). Frametypes: I,i,K,P,B,b. K=<I or ...

2024/2/21 -QP stands for Quantization Parameter, and allows full control over the resulting video quality. In this case, all-intra or lossless, using QP is necesasry, but ...

2024/3/24 -Having said that, I always said that quality was x265, qsv hevc, x264, qsv h264, in that order. What if I told you i was about to show you indisputable visual ...

2024/4/11 -so i tried x264 lossless to see what happens. 4 Hour, 1920 * 1080 YV12 x264 (qp 0 very slow) 210 GB @ 13.4 fps. Decoding speed ok (no frame lost) on a Low ...

2024/4/18 -Rate control modes. Similar to x264, the x265 encoder has multiple rate control algorithms, including: 1-pass target bitrate (by setting -b ...

2024/3/15 -(Unless you encoded with x264 -qp 0 lossless encoding!) Lossless compression (like PNG or lossless h.264) has a much worse compression ratio than this file ...

2024/3/6 -Constant Quality. libaom-av1 has a constant quality (CQ) mode (like CRF in x264 and x265) which will ensure that every frame gets the number ...

2024/2/11 -Notice that x264 and x265 supports Adaptive Quantization, it's controlled by the switches: aq-mode and aq-strength. In addition to Spatial QP-Modulation, there ...

2024/2/19 -X264 is a great sweet spot for decent quality, not-crazy encoding times, and solid file-size compression. And for the Quality slider - I would stick with ...