在CUDA GPU上使用EE4 Pro SP1进行编码时出现质量问题 [英] Quality problem when encoding using EE4 Pro SP1 on CUDA GPU

问题描述

您好

目前我正在使用EE4 Pro测试Nvidia Tesla卡，以便为我们的VOD服务转码视频资产。在测试期间，我发现在GPU上编码的视频片段的质量比仅在CPU上编码的相同片段差得多。输出（SmoothStreaming，
h.264，AAC）非常块，并且具有大量的工件，尤其是在屏幕上移动的瞬间。几乎每个设置都针对质量进行了优化，但输出质量并不令人满意。

Currently I'm testing Nvidia Tesla card with EE4 Pro for transcoding video assets for our VOD Service. During the tests I've found that quality of video fragment encoded on GPU is much worse than the same fragment encoded only on CPU. Output (SmoothStreaming, h.264, AAC) is very blocky and has a big number of artifacts especially in moments of movement on screen. Almost every setting is optimized for quality, but the output quality is unsatisfactory.

硬件配置已足够 - 我在2x6核Xeon CPU上运行EE，内存为12 GB和Nvidia Tesla 2050。

Hardware configuration is sufficient - I'm running EE on 2x6-core Xeon CPUs with 12 GB of RAM and Nvidia Tesla 2050.

你见过类似的情况吗？ 

Have you ever met with similiar situation? 

 

推荐答案

在遵循SP1版本中建议的设置时，我遇到了主要的Cuda质量问题。 我使用了Bicubic调整大小与Force Bob去隔行相结合来获得可接受的结果。 它仍然不能与CPU相提并论，但它的速度更快且质量仍然合理。

I had major Cuda quality issues when following the settings recommended in the SP1 release.  I have used Bicubic resizing combined with Force Bob deinterlacing to come up with acceptable results.  It still isn't up to par with CPU only but it is WAY faster and still reasonable quality.

希望这有助于或至少激发更多对话。 我很想知道其他人在做什么。

Hope this helps or at least sparks more conversation.  I would love to know what others are doing.

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