[FFmpeg-user] (no subject)

[Dennis Mungai]

On Tue, 26 Jan 2021, 03:14 owen s, <owen94012 at gmail.com> wrote:

> I am running this command
>
> ffmpeg-git -y \
> -vaapi_device /dev/dri/renderD128 \
> -framerate 60 -i ./image.jpg \
> -stream_loop -1 -i ./audio.mp3 \
> -map 0:v \
> -c:v h264_vaapi \
> -vf
>
> 'crop=2560:1440:0:0,format=nv12|vaapi,hwupload,loop=loop=-1:size=1:start=0,hwdownload,format=yuv420p'
> \
> -rc_mode 2 -b:v 20M \
> -c:v libx264 \
> -map 1:a \
> -c:a libfdk_aac -b:a 128k -ar 44100 -ac 2 \
> -af "dynaudnorm=f=150:g=15" \
> -f flv /dev/null
>
> the encoding speed is very fast, typically 1.78x
>
> frame=2512127 fps=107 q=0.0 size=56457493kB time=11:37:47.36
> bitrate=11046.8kbits/s speed=1.79x
>
> Is there any way to limit this speed to a standard 1x?
> _______________________________________________
>


Add the realtime filter to your filter chain, right before crop. So you'd
have -vf "realtime,crop..." etc

>