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• Scheduling an RTMP stream remotely - using an intermediary server for storing + sending video stream packets before deploying to streaming service

  25 février 2020, par hedgehog90

  This is more of a curiosity than something I really need, but I thought I’d ask anyway.

  If I just want setup a normal livestream, I would use something like OBS, capture my input, encode it into something manageable for my network and send it to a remote rtmp server.

  But I’d like to know if it’s possible to put an intermediary remote server between myself and the streaming service’s server. Basically so I can manage the stream (if it’s a playlist) and schedule when to send it to broadcast on the streaming service.

  It’s also worth noting that there may be limited bandwidth on the client-side (my computer), assuming the intermediary has greater bandwidth, this method should eliminate the common issue of dropping frames while streaming.

  Now for an example :

  To make it simpler, instead of using OBS + capture hardware, I’m using a video file.
  I want to encode that video in the same way that OBS does when streaming to a remote server via an rtmp protocol using ffmpeg.

  Now I upload that data, at my own rate, to a remote server that I control (running Ubuntu) for storage and eventual deployment. Importantly, I do not want or require any video-processing done on the intermediary server, as we have already encoded the data for deployment on the client-side. This is just simply managing and storing the data.

  A day later, I want to run a script on my intermediary server that will then send the processed stream data, packet by packet, to the targeted streaming server.

  ---

  I’m an experienced coder, with lots of experience with data handling and video encoding. It should be simple, but I’m not all that clued up on the way video streaming via RTMP works.

• Can we Stream Live Audio from Android phone using FFmpeg ?

  17 août 2023, par Uday

  Im using ffmpeg_kit_flutter package to Stream data to the RTSP server in Flutter.

  


  IOS : Working

  


  Android : Its not working

  


  Command Used :

  


  'ffmpeg -f avfoundation -i ":0" -acodec aac -f rtsp -rtsp_transport tcp "$Url"'


  


  When i ran a "ffmpeg -devices" command on android, it returns follwing response, through which i got to know android doesn't support avfoundation but android has android_camera,
Does this android_camera support audio too ?

  


  Command : 'ffmpeg -devices'

  


  Response :

  


  I/flutter (10620): logs:  libavutil      57. 28.100 / 57. 28.100
I/flutter (10620): logs:  libavcodec     59. 37.100 / 59. 37.100
I/flutter (10620): logs:  libavformat    59. 27.100 / 59. 27.100
I/flutter (10620): logs:  libavdevice    59.  7.100 / 59.  7.100
I/flutter (10620): logs:  libavfilter     8. 44.100 /  8. 44.100
I/flutter (10620): logs:  libswscale      6.  7.100 /  6.  7.100
I/flutter (10620): logs:  libswresample   4.  7.100 /  4.  7.100
I/flutter (10620): logs:Devices:
I/flutter (10620):  D. = Demuxing supported
I/flutter (10620):  .E = Muxing supported
I/flutter (10620):  --
I/flutter (10620): logs: D  android_camera   
I/flutter (10620): logs: D  lavfi            
I/flutter (10620): logs: DE video4linux2,v4l2


  


  Commands which I tried in Android

  


  FFmpegKit.execute('-y -f android_camera -i 0:1 -r 30 -c:a aac -f rtsp -rtsp_transport tcp "$Url"');

FFmpegKit.execute('-y -f android_camera -i 0:1 -r 30 -c:a libmp3lame -qscale:a 2 "/storage/emulated/0/Download/androidvideo.mp3"');

FFmpegKit.execute('-y -f android_camera -i 0:0 -r 30 -c:a wavpack -b:a 64k "/storage/emulated/0/Download/androidvideo.wav"');


  


  This command records video but no audio in it.

  


  FFmpegKit.execute('-video_size hd720 -f android_camera -camera_index 1 -i anything -r 10 -t 00:00:15 "$dir/androidvideo.mp4”');


  


• Cannot use FFmpeg in Xcode iOS Project (file .h not found)

  19 mars 2016, par BlackBox

  I followed almost step by step this guide.

  Almost because I downloaded, as a user suggested, ffmpeg ios library already built from here

  I followed from "Linking static libraries in Xcode" but I cannot import anyway the header files of ffmpeg. (So I got the .a files)

  For example

  #include "avformat.h"
  
  // or
  
  #import "libavformat/avformat.h"
  
  // or
  
  #import <libavformat></libavformat>avformat.h>

  Everything that I use does not work.

  I specify that those .a files are currently in my project directory, indeed, if I import the .a file, it doesn’t complain that it isn’t found, but when compiling, it complains about UTF-8 stuff because .a files are object libraries and cannot be imported that way.

  I put also the Header Search Paths for the project as it was suggested and the config.log file but nothing.

  Also I see libraries are missing from every project example of FFmpeg I was able to find on GitHub.

  Any ideas ?