kewenyu
帖子: 33
注册时间: 2013-07-28 0:23

新手问下关于x264的opencl问题【已解决】

加上--opencl真的可以加速吗?我看好像没变快啊。而且加上后会不会造成质量下降啊?
另外加上这个后某些时候x264会突然崩溃,是不是这功能还很不稳定啊?
上次由 kewenyu 在 2013-11-23 16:45,总共编辑 1 次。
头像
Billy Herrington
帖子: 83
注册时间: 2013-01-09 9:54

Re: 新手问下关于x264的opencl问题

"--opencl" only means using OpenCL for part of (currently lookahead) processing. It does not, and will never necessarily mean being faster. That's why when you try --fullhelp you won't find terms like faster, boost, accelerate, etc. in the official explanation of --opencl. The speed varies according to your hardwares, encoding settings, sources and many other things. OpenCL may even get it slower if the speed of data copy between GPU and CPU, or the speed of GPU is the bottleneck. So if someone tells you that using --opencl is faster without specifying in which case it is, one must be somehow irresponsible for one's words.
kewenyu
帖子: 33
注册时间: 2013-07-28 0:23

Re: 新手问下关于x264的opencl问题

图片
好吧,被acceleration给骗了
头像
msg7086
帖子: 600
注册时间: 2011-02-19 0:49

Re: 新手问下关于x264的opencl问题

显卡加速最捉急的就是显存和内存之间的传输速度了。
Delogo LGD Collections 各种台标下载 | Home Of VapourSynth Evolution

<回答が無い理由>
1. 誰も知らない
2. 質問文が意味不明
3. 知ってるが、お前の態度が気に入らない
4. 良いボケが思いつかない

回到 “视频编码器 / Video encoder discussion”