opengop + keyint -1 keyintmin 1
約小6%容量
这个6%是相对什么而言?在keyint=-1的基础上,再开openGOP,还能小6%?翡璃月 写了:opengop + keyint -1 keyintmin 1
約小6%容量
keyint=-1那个意思是 除开第一帧为I帧之后,强制不使用sencecut,也就是后面没有任何I帧了。这个和x264的机制完全不同。翡璃月 写了:opengop + keyint -1 keyintmin 1
約小6%容量
之前做测试的时候,对于1080p 24p的视频,一个小时的keyint帧出现的时候(这个时候一般平均码率可以在1000K左右,远低于一般的5000K+),一个小时我的seek时间是1分钟(E5 2695 V2x2,不过由于lav的解码机制最多只能用到16线程)。cunhan 写了:有过x264时代用keyint=inf压过一个真人访谈(受访者就是全程一直坐着说话),30分钟完全不能seek的惨痛经历。
是OpenGOP再keyint=-1littlepox 写了:这个6%是相对什么而言?在keyint=-1的基础上,再开openGOP,还能小6%?翡璃月 写了:opengop + keyint -1 keyintmin 1
約小6%容量
依旧不会出现I帧,你知道opengop是啥么?翡璃月 写了:是OpenGOP再keyint=-1littlepox 写了:这个6%是相对什么而言?在keyint=-1的基础上,再开openGOP,还能小6%?翡璃月 写了:opengop + keyint -1 keyintmin 1
約小6%容量
doom9上看到的,偶没比过,仅分享下...sborho 写了:about rdoq-level:
Before introducing --rdoq-level, --rd-level 4, 5, or 6 implied what is now --rdoq-level 2. After --rdoq-level, it's enablement is independent of --rd-level but the presets which used to enable it (>= slow) still do. --rdoq-level 1 is actually the same as --rdoq-level 2 except for two short-cuts which prevent certain decimations, which means --rdoq-level 2 can often reduce bitrate quite a bit more than --rdoq-level 1, but --rdoq-level 1 will generally be better at preserving fine detail at the same bitrate (particularly when psy-rdoq is enabled).
Verified.upyzl 写了:doom9上看到的,偶没比过,仅分享下...sborho 写了:about rdoq-level:
Before introducing --rdoq-level, --rd-level 4, 5, or 6 implied what is now --rdoq-level 2. After --rdoq-level, it's enablement is independent of --rd-level but the presets which used to enable it (>= slow) still do. --rdoq-level 1 is actually the same as --rdoq-level 2 except for two short-cuts which prevent certain decimations, which means --rdoq-level 2 can often reduce bitrate quite a bit more than --rdoq-level 1, but --rdoq-level 1 will generally be better at preserving fine detail at the same bitrate (particularly when psy-rdoq is enabled).
不知道没有这个参数之前的BDRIP是表现为level1还是level2。littlepox 写了:Verified.upyzl 写了:doom9上看到的,偶没比过,仅分享下...sborho 写了:about rdoq-level:
Before introducing --rdoq-level, --rd-level 4, 5, or 6 implied what is now --rdoq-level 2. After --rdoq-level, it's enablement is independent of --rd-level but the presets which used to enable it (>= slow) still do. --rdoq-level 1 is actually the same as --rdoq-level 2 except for two short-cuts which prevent certain decimations, which means --rdoq-level 2 can often reduce bitrate quite a bit more than --rdoq-level 1, but --rdoq-level 1 will generally be better at preserving fine detail at the same bitrate (particularly when psy-rdoq is enabled).
确实这个新增的rdoq-level 1更好