[FFmpeg-user] problem ffmpeg with cuda and scale

[Dennis Mungai]

On Thu, 17 Oct 2019 at 02:09, Michele Salerno <mikysal78 at gmail.com> wrote:

> Il giorno mar 15 ott 2019 alle ore 23:33 Dennis Mungai
> <dmngaie at gmail.com> ha scritto:
>
> > For usage, see:
> >
> > ffmpeg -h filter=scale_cuda
> >
> > On my build, I see:
> >
> > Filter scale_cuda
> >   GPU accelerated video resizer
> >     Inputs:
> >        #0: default (video)
> >     Outputs:
> >        #0: default (video)
> > cudascale AVOptions:
> >   w                 <string>     ..FV...... Output video width (default
> "iw")
> >   h                 <string>     ..FV...... Output video height (default
> "ih")
> >
> it's ok, i have reinstall OS and compile Driver and Cuda from bin
> (NVIDIA-Linux-x86_64-430.50.run and cuda_10.1.243_418.87.00_linux.run)
> Compile ffmpeg with
> ./configure --enable-nonfree --enable-nvenc --enable-libx264
> --enable-gpl --enable-cuda --enable-cuvid --enable-cuda-nvcc
>
>
> > So with your command, substitute scale_npp with scale_cuda as shown:
> >
> > #!/bin/bash
> > for i in *.mp4; do
> >     ffmpeg -threads 8 -hwaccel nvdec -i "$i" -vf scale_cuda=720:-1
> > -c:v h264_nvenc -preset slow "convert/$i";
> > done
>
> First, run the command by hand before writing scripts. If that works, then
> proceed to adjust your script as needed.