transcode: ignore input rtmp port

[thegobot]

XCORE-SRS/6.0.177(Hang)
STABLE
3a390f0

ffmpeg version N-121090-g9e4ff4732c-20250916 Copyright (c) 2000-2025 the FFmpeg developers
Error opening input file rtmp://127.0.0.1:1935/live/xxxxxxx?vhost=__defaultVhost__.

srs-dev.conf

srs_log_tank  console;
#srs_log_level warn;
daemon  off;
listen 1937;
server_id srs-dev;
pid /run/srs-dev.pid;

    transcode {
        enabled on;
        ffmpeg /usr/local/bin/ffmpeg;
        engine ff {
            enabled on;

            perfile {
                re;
            }
            iformat flv;

            vfilter {
                vf 'scale=320:-2';
            }
            vcodec libx264;
            vbitrate 300;
            vfps 20;
            vthreads 12;
            vprofile baseline;
            vpreset superfast;
            vparams {
            }
            acodec aac;
            abitrate 48000;
            asample_rate 44100;
            achannels 2;
            aparams {
            }
            output rtmp://127.0.0.1:1937/[app]/[stream]?vhost=small;
        }
    }

[duiniuluantanqin]

What does it mean?

TRANS_BY_GPT4

[mpisat]

It means the user is running SRS on port 1937 for rtmp. But code is ignoring rtmp port for engine ff