Yahoo! JAPAN

2021/2/28 -I usually find that X265 has far less artifacting, banding, and blocking. Not to mention, CRF 23 on H265 basically looks like CRF 18 on H264.

2010/12/25 -crf 16では0.99に近い値が出ており、crf 18で0.987, crf 19で0.986, そしてcrf 20で0.985と、なかなか良い数値が出ている。 crf 22で0.982, crf 24だ ...

2021/4/13 -I want to encode a 480p movie with VP9 in two passes. Google recommends to use crf 34 for low quality encoding of 480p video, and crf 33 for ...

2020/10/30 -hi, anyone know what the eq. of CRF 20 is in X264 vs x265? Is there a 1:1 map somewhere i can use as a reference? for x264: ...

2017/2/24 -For x264, sane values are between 18 and 28. The default is 23, so you can use this as a starting point. With ffmpeg , it'd look like this:.

2020/8/16 -Lower crf with x264/x265 yields diminishing returns (quality vs bitrate). CRF16 is already quite low. Higher resolution with higher crf ...

2013/11/18 -For x264 your valid range is 0-51 : The range of the quantizer scale is 0-51: where 0 is lossless, 23 is default, and 51 is worst possible. A ...

x264 is a software library and command line application for encoding H.264 / AVC developed by VideoLAN, the people behind the ever-popular VLC Media Player ...

2016/10/18 -I have some experience using ffmpeg with x264 and I wanted to do a comparison with libvpx-vp9. ... x264 and libvpx-vp9. ... crf', '20', '-preset', ' ...

2017/3/1 -When choosing CRF and maxrate/VBV, it helps to keep in mind the resolution. CRF 20~23 may not appear lossless ("visually transparent") if the ...