[FFmpeg-user] Encoding 4K 60Hz lossless from a capture card
rogerdpack2 at gmail.com
Sat Dec 16 00:28:01 EET 2017
You are still performing encoding:
"(native) -> (h264)"
On 12/12/17, Alex Pizzi <alex.p at avenview.com> wrote:
> Windows 10 64-bit
> Ryzen 7
> GTX 1080
> 32GB RAM
> Hi all,
> I'm trying to encode 4K 30/60Hz video in a lossless format from a 4K
> capture card and everything I've tried gives me a similar error as in the
> linked image, [real-time buffer too full or near too full frame dropped]
> This is the command I've tried most recently:
> ffmpeg.exe -f dshow -video_size 3840x2160 -framerate 30 -pixel_format bgr24
> -rtbufsize INT_MAX -i video="MZ0380 PCI, Analog 01 Capture" -vf fps=30
> With the images dumped to a 10G RAM disk or 850 EVO. I'm doing this to skip
> the encoding step.
> I get the same error when encoding with h265 lossless and NVENC h265
> I need the video to be lossless as it will be used to test hardware h265
> Video source is a 4K Blu-ray.
> Any help would be greatly appreciated. Thank you.
> -Alex P
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