[FFmpeg-user] ffmpeg ignores video filter (-vf:v:0/1), possible bug?

[Gyan Doshi]

On 4/19/2018 1:39 PM, Jakub Vojáček wrote:

> The command we're trying is
> 
> ffmpeg -i udp://@239.10.10.4:5004?fifo_size=100000000 \
> -map i:0x7f9 -c:v:0 h264_nvenc -r:v:0 25 *-vf:v:0
> "fps=25,scale_npp=640:360:format=same:interp_algo=lanczos"* -aspect:v:0
> 16:9 -g:v:0 80 -b:v:0 400K -minrate:v:0 400k -maxrate:v:0 400k \
> -map i:0x7f9 -c:v:1 libx264 -r:v:1 25 *-vf:v:1 "fps=25,scale=1280:720"*
> -aspect:v:1 16:9 -g:v:1 80 -b:v:1 4000K -minrate:v:1 4000k -maxrate:v:1
> 4000k \
> -map i:0x7fc -c:a:0 aac -b:a:0 128k -ar 48k \
> -map i:0x7fd -c:a:1 aac -b:a:1 64k -ar 48k \
> -f mpegts udp://@239.0.0.123:1234?overrun_nonfatal_option=1

-vf is an alias for filter:v but does not accept stream specifiers. Use 
-filter:v:0 and -filter:v:1


Regards,
Gyan