FFMPEG pushed RTMP stream not working on Android & iPhone

Question

I have to make a semi-live-stream. I used Nginx-rtmp module and then pushed content to it via ffmpeg using:

ffmpeg -re -i content.mp4 -r 25 -f fvl \"rtmp://rtmp.         


        

Answer 1

1. Your input video uses H.264 with a high profile.

   If you want compatibility with both iOS and Android you must use the baseline profile. Newer iPhones support the main and high profiles but the Android documentation only mentions baseline:

   -c:v libx264 -profile baseline

2. Don't use the native aac as audio codec, use libfdk_aac since it's the highest quality encoder available for FFmpeg and it will help you produce a valid AAC stream:

   -c:a libfdk_aac

3. Make sure the audio rate is suported. The FLV video format only supports sample rates of 11025, 22050, and 44100.

   -ar 44100

4. The ffprobe shows an unsupported stream Stream #0:1: Data: none. Use map to skip it:

   -map 0:0 -map 0:2

5. (MPEG-TS only) If you use a .ts file as input make sure to remove the AAC ADTS header:

   -bsf:a aac_adtstoasc

Eg:

ffmpeg -re -i content.mp4 -map 0:0 -map 0:2 -c:v libx264 -vprofile baseline -preset ultrafast -tune zerolatency -r 25 -pix_fmt yuv420p -c:a libfdk_aac -ac 2 -ar 44100 -f flv rtmp://...