Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

ion, what is the command to use the maximum buffer size? > -rtbufsize INT_MAX doesn't work. Thanks. > > -Original Message- > From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of Roger > Pack > Sent: Tuesday, February 27, 2018 8:03 PM > To: FFmpeg user question

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

-user-boun...@ffmpeg.org] On Behalf Of Roger Pack Sent: Tuesday, February 27, 2018 8:03 PM To: FFmpeg user questions Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture consider also libx264 "ultrafast" preset, GL! On Tue, Feb 13, 2018 at 7:57 AM, Alex P <ale...@avenview.com&

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

2018-02-13 22:28 GMT+01:00 Alex P : > Does anyone know of a lossless encoder that inputs and outputs bgr24? (ljpeg, I don't claim it helps you though.) Please avoid top-posting here, Carl Eugen ___ ffmpeg-user mailing list

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

On Tue, Feb 13, 2018, at 12:28 PM, Alex P wrote: > > Does anyone know of a lossless encoder that inputs and outputs bgr24? $ ffmpeg -h encoder=libx264rgb [...] Supported pixel formats: bgr0 bgr24 rgb24 ___ ffmpeg-user mailing list

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Does anyone know of a lossless encoder that inputs and outputs bgr24? -Original Message- From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of James Girotti Sent: Tuesday, February 13, 2018 1:33 PM To: FFmpeg user questions Subject: Re: [FFmpeg-user] 4K 60Hz Directshow

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

On Tue, Feb 13, 2018 at 6:57 AM, Alex P wrote: > I think I've figured it out. When I use nv12 or yuv420p as the input and > output pixel format, I get x1 performance. If I use bgr24/rgb24 as the > input and yuv444p as the output, I get around x0.3. > Looks like switching

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture > > ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize > 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" > -c:v h264_nvenc -preset lossless -f null - Gives me the same erro

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

2018-02-13 1:45 GMT+01:00 Andy Furniss : > Carl Eugen Hoyos wrote: > >> Is there really a hardware encoder that supports lossless encoding? > > https://developer.nvidia.com/nvidia-video-codec-sdk#NVENCFeatures Thank you! Carl Eugen

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Carl Eugen Hoyos wrote: Is there really a hardware encoder that supports lossless encoding? https://developer.nvidia.com/nvidia-video-codec-sdk#NVENCFeatures Doesn't mention rgb though. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Alex P wrote: Hi James, ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v h264_nvenc -preset lossless -f null - Gives me the same error Maybe it doesn't do rgb24 lossless - you should paste

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

> > ffmpeg -f dshow -video_size 3840x2160 -framerate 6/1001 -rtbufsize > 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" > -c:v h264_nvenc -preset lossless -f null - > Gives me the same error > That's surprising, I can get about 200fps using file-based/ramdisk "-c:v

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

fmpeg.org] On Behalf Of James Girotti Sent: Monday, February 12, 2018 3:31 PM To: FFmpeg user questions Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture Hi Alex, I looked at your attached log. It appears to me that using libx265, your computer cannot encode fast enough. It appears your

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

ffmpeg.org] On Behalf Of James Girotti Sent: Monday, February 12, 2018 3:31 PM To: FFmpeg user questions Subject: Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture Hi Alex, I looked at your attached log. It appears to me that using libx265, your computer cannot encode fast enough. It appears y

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

2018-02-12 16:37 GMT+01:00 Alex P : > Command: ffmpeg -f dshow -video_size 3840x2160 -framerate 59.9 -rtbufsize > 21 -pixel_format bgr24 -i video="MZ0380 PCI, Analog 01 Capture" -c:v > libx265 -x265-params lossless=1 out1.avi Unrelated: -framerate 59.9 is most likely

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

Hi Alex, I looked at your attached log. It appears to me that using libx265, your computer cannot encode fast enough. It appears your computer is encoding about 10.5 fps, but your input is about 60fps. So a lot of frames get buffered every second while they're waiting to be encoded. This leads to

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

William Caulfield wrote: >haven't used Windows / Directshow for a few years, but back in >the day I would have attempted this using VirtualDub and >HuffYUV. I believe that HuffYUV is available for ffmpeg, but >can't say that I've ever tried it. Indeed, FFmpeg's flavour of HuffYUV is even better

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

] 4K 60Hz Directshow Video Capture On Mon, Feb 12, 2018 at 7:37 AM, Alex P <ale...@avenview.com> wrote: > Windows 10 > > Intel i7-8700K > > GTX 1050Ti > > 16GB DDR4 > > SATA Samsung Evo > > > > I'm using a Yuan 4K60 capture card with the end goal of c

Re: [FFmpeg-user] 4K 60Hz Directshow Video Capture

On Mon, Feb 12, 2018 at 7:37 AM, Alex P wrote: > Windows 10 > > Intel i7-8700K > > GTX 1050Ti > > 16GB DDR4 > > SATA Samsung Evo > > > > I'm using a Yuan 4K60 capture card with the end goal of capturing the video > in a lossless format. I need it to be lossless as the clips

[FFmpeg-user] 4K 60Hz Directshow Video Capture

Windows 10 Intel i7-8700K GTX 1050Ti 16GB DDR4 SATA Samsung Evo I'm using a Yuan 4K60 capture card with the end goal of capturing the video in a lossless format. I need it to be lossless as the clips will be used to test hardware h264 encoders. Product page: