On Tue, Mar 09, 2021 at 07:38:09AM +0100, Anders Degerberg wrote:
> On Tue, Mar 9, 2021 at 4:52 AM Peter White wrote:
>
> > Just an aside, you need to specifiy the -sws_flags like this:
> > -sws_flags bilinear+print_info
>
> Thanks Peter,
> unfortunately it does not seem to improve the yuv conv
On Tue, Mar 9, 2021 at 4:52 AM Peter White wrote:
> Just an aside, you need to specifiy the -sws_flags like this:
> -sws_flags bilinear+print_info
Thanks Peter,
unfortunately it does not seem to improve the yuv conversion speed,
still at about 0.6x. Some output below:
- snip -
[graph 0 input f
On Mon, Mar 08, 2021 at 09:46:22PM +0100, Anders Degerberg wrote:
> Hi, see output below:
> $ ffmpeg -loglevel verbose -f decklink -raw_format rgb10 -i "DeckLink
> 8K Pro (1)" -sws_flags bilinear -sws_flags print_info -c:v hevc_nvenc
> -an -b:v 30M -f null -
Just an aside, you need to specifiy the
Am Mo., 8. März 2021 um 23:32 Uhr schrieb Anders Degerberg
:
>
> On Mon, Mar 8, 2021 at 10:44 PM Carl Eugen Hoyos wrote:
>
> > Just to make sure that our assumption that this would need
> > changes in libswscale is correct, please also test the following:
> > -pix_fmt yuv444p16 -vcodec rawvideo -a
On Mon, Mar 8, 2021 at 10:44 PM Carl Eugen Hoyos wrote:
> Just to make sure that our assumption that this would need
> changes in libswscale is correct, please also test the following:
> -pix_fmt yuv444p16 -vcodec rawvideo -an -f null -
> -i "Decklink ..." -an -f null -
> and compare the speed (o
Am Mo., 8. März 2021 um 21:46 Uhr schrieb Anders Degerberg
:
>
> Hi, see output below:
> $ ffmpeg -loglevel verbose -f decklink -raw_format rgb10 -i "DeckLink
> 8K Pro (1)" -sws_flags bilinear -sws_flags print_info -c:v hevc_nvenc
> -an -b:v 30M -f null -
Just to make sure that our assumption that
Hi, see output below:
$ ffmpeg -loglevel verbose -f decklink -raw_format rgb10 -i "DeckLink
8K Pro (1)" -sws_flags bilinear -sws_flags print_info -c:v hevc_nvenc
-an -b:v 30M -f null -
ffmpeg version N-101405-g2570663 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 10 (GCC)
config
On Mon, 8 Mar 2021 at 17:49, Anders Degerberg wrote:
> Hi,
>
> I've come across a problem I really can't figure out when trying to stream
> realtime a RGB 10-bit Decklink input, as YUV444 10-bit HEVC in 25fps.
> In a 1920x1080 resolution on the Decklink input, it all works very well,
> using hev
On Mon, Mar 08, 2021 at 07:58:44PM +0100, Anders Degerberg wrote:
> Hi Peter,
>
> On Mon, 8 Mar 2021 at 19:18, Peter White wrote:
> > Try:
> >
> > ffmpeg -i input_file -sws_flags show_info ... output_file
> '-sws_flags print_info' gives:
> [swscaler @ 0x4752f00] bicubic scaler, from gbrp10le to y
Hi Peter,
On Mon, 8 Mar 2021 at 19:18, Peter White wrote:
> Try:
>
> ffmpeg -i input_file -sws_flags show_info ... output_file
'-sws_flags print_info' gives:
[swscaler @ 0x4752f00] bicubic scaler, from gbrp10le to yuv444p16le using MMXEXT
> Do you really have to use RGB on the Decklink? Seems po
On Mon, Mar 08, 2021 at 03:19:46PM +0100, Anders Degerberg wrote:
> Hi,
>
> I've come across a problem I really can't figure out when trying to stream
> realtime a RGB 10-bit Decklink input, as YUV444 10-bit HEVC in 25fps.
> In a 1920x1080 resolution on the Decklink input, it all works very well,
Hi,
I've come across a problem I really can't figure out when trying to stream
realtime a RGB 10-bit Decklink input, as YUV444 10-bit HEVC in 25fps.
In a 1920x1080 resolution on the Decklink input, it all works very well,
using hevc_nvenc codec on a Nvidia GPU. Auto_scaler kicks in converting the
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