Reduce Latency in RTMP streamings

**Describe the bug**
I'm working on a low-latency streaming service.
Comparing an RTMP streaming with Cicada (iOS) versus FFPlay, the Cicada stream is always ~1 second behind FFPlay.

For FFPlay I use `-fflags nobuffer`, is there a way to pass a similar flag to Cicada or to the ffmpeg service inside it?

Could there be any other reason or configuration option why Cicada is behind FFPlay?

**To Reproduce**
Steps to reproduce the behavior:
1. Open an RTMP streaming with Cicada
2. Open the same streaming with FFPlay and `-fflags nobuffer`
3. See there is a diference and Cicada has more latency.

**Expected behavior**
Both streams should have similar latency

**Smartphone (please complete the following information):**
- Device: iPhone 12 Pro
- OS: 14.5
- Version [e.g. 22]

Start by reproducing the latency difference on an iPhone 12 Pro running iOS 14.5, comparing Cicada with FFPlay using `-fflags nobuffer`. Inspect the player and FFmpeg configuration paths involved in RTMP playback; done means identifying the cause and providing a configuration or behavior that brings Cicada latency close to FFPlay.

Written by the indexing model from the issue text.