VirtualDub AVI 压缩
我正在使用 VirtualDub 从输入的 JPG 文件输出压缩的 AVI 文件。我选择
完全处理模式
作为视频模式,
Cinepak Codec by Radius
我选择图像质量为 100%、50% 和 10%,但输出文件大小相同。我本来期望较低的质量设置会生成较小的文件。是我使用方式不对吗?
I am using VirtualDub to output compressed AVI files from input JPG files. I choose
Full Processing Mode
as the video mode and
Cinepak Codec by Radius
I chose image quality of 100%, 50% and 10% but the output files are all the same size. I would have expected the lower quality setting to produce smaller files. Am I using it incorrectly?
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Cinepack 是一个糟糕的编解码器,而且正如 Roman 所说,它似乎并没有真正的质量设置。
我建议您安装Xvid版本1.3.2编解码器并重试。互联网上有很多关于如何使用它的教程(尽管大多数都是 2006 年之前/x264 之前的)。这是一个简单且最新的: http://granjow.net/virtualdub-tutorial-installing .html
另外,如果您不使用 VirtualDub 的过滤器等,则应该对视频使用“快速重新压缩”。它速度更快,质量更高,因为它不会将图片的色彩空间从 YV12 转换为 RGB,然后再转换回 YV12。
Cinepack is an horrible codec, and, as Roman said, it don't appears to really have an quality setting.
I suggest you to install the Xvid version 1.3.2 codec and try again. There are many tutorials on the internet on how to use it (although most of them are pre-2006/pre-x264). Here is a simple and up to date one: http://granjow.net/virtualdub-tutorial-installing.html
Also, if you are not using VirtualDub's filters and such, you should use "Fast Recompress" for the video. It is a little bit faster and higher quality, as it don't convert the color space of your picture from YV12 to RGB and then back to YV12.
IIRC,“Cinepak Codec by Radius”没有质量设置。至少底层的 VFW/ICM 编解码器不会显示质量滑块作为选项。我想 VirtualDub 的设置被忽略了。
IIRC, "Cinepak Codec by Radius" does not have a quality setting. At the very least the underlying VFW/ICM codec does not show a quality slider as an option. I suppose VirtualDub's setting is just ignored.