On Mon, Aug 17, 2020 at 11:21:38 -0300, Leonardo Pagotto wrote:
I'm transcoding/resizing some UDP live streams using CUVID and NVENC. It works but I got the feeling could be better, this is the my command line:
What feeling is that? Faster, higher quality, just more efficient?
ffmpeg -vsync 0 -hwaccel cuvid -c:v h264_cuvid -resize 1280x720 -drop_second_field 1 -i udp:// 230.8.0.7:10008?buffer_size=3000000?fifo_size=1000000&overrun_nonfatal=1 -crf 30 -c:a -c:v hevc_nvenc -profile:v main -pass 2 -rc vbr -maxrate 3M -f mpegts udp://239.210.210.7:1234?pkt_size=1316&localaddr=10.10.71.55
I don't think this is a working command line. - "-c:a -c:v hevc_nvenc" is missing something. - "-pass 2" is for multipass encoding, right? Does that make sense with UDP to UDP encoding? I don't know anything about cuvid on nvenc usage, so I can't actually help you with that. ;) (I also recommend chacking out presets before manually tweaking parameters, unless you already know what you want to achieve.) Moritz