However, on the other two machines (computer B and C), the maximum that seems to work when encoding with AME is 3840x1080 (h.264 level 5.1). On one of our three test machines (computer A), all videos play just fine in Unreal, including resolutions around 4096x2048. In both cases, the final encoding is done in Adobe Media Encoder (AME) using h.264 wrapped in mp4. We have created all our footage in Nuke and Premiere. The current documentation is quite vague on which formats, codecs, codec levels etc. If this actually is the case, then how can we make sure that the videos play on all our end users’ machines? It looks like as if Unreal is not using built-in codecs but system codecs to decode the videos? This generation of PureVideo HD corresponds to Nvidia Feature Set E (or "VDPAU Feature Set E").We are trying to play back 4K videos in our Windows-only project, but we just realized that some of our footage plays back only on some of our test machines. The sixth generation PureVideo HD is sometimes called "PureVideo HD 6" or "VP6", although this is not an official Nvidia designation. GPUs with Feature Set E support an enhanced error concealment mode which provides more robust error handling when decoding corrupted video streams. It is also capable of decoding Digital Cinema Initiatives (DCI) 4K resolution videos at 4096 × 2160 pixels and, depending on the driver and the used codec, higher resolutions of up to 4096 × 4096 pixels. in the GeForce GTX 750/GTX 750 Ti (GM107) and also included in the Nvidia GeForce 900 (Maxwell) series GPUs has significantly improved performance when decoding H.264 and MPEG-2. The sixth generation of PureVideo HD, introduced with the Maxwell (microarchitecture), e.g. In theory you should be able to decode 4K h.264 video.
If it is encoded using h.265 or AV1 instead of h.264 you simply lack the hardware to do decoding on the graphics card.
It does not use the CUDA cores for video decoding so while your GPU might be powerful it is not able to use that power for this specific task.ĭepending on the video codec you may simply not be able to decode it using your graphics card. Your GPU has a fixed function video decoder called nvdec.
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