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• Publish audio via RTMP to Red5 server without flash

  2 mars 2015, par JackMahoney

  strange problem here so I understand if it’s the wrong place to post, would appreciate any help if you can give it.

  I have a .swf that records a voice and uploads it to a red5 server via rtmp using Netstream.publish(). I want a way to write a command line tool or bash script for streaming multiple audio files to the same red5 server via rtmp.

  I have tried ffmpeg like so, but it doesn’t seem to be working
  ffmpeg -i #{file} -f flv #{connection_url}

  My questions are :

  1) what format must audio be in order to mimic flash’s Netstream.publish() ? FLV ? If so, I thought flv was a video format ?

  2) are there any existing tools you would recommend for uploading/streaming the file to the red5 server via rtmp.

  3) finally, should i just write my scripts in actionscript using the netstream.publish calls ? If that is the case how can I invoke the AS3 in order to batch upload files from the command line ?

  Thanks and sorry for the obscurity. Any help is appreciated.

  Jack

• Adding Support for resuming download with FFMPEG ?

  5 février 2019, par INDIERs

  Currently i am using this to download hls streams with ffmpeg in android app

  ffmpeg -protocol_whitelist file,http,https,tcp,tls,crypto -i "input.m3u8" -codec copy video.mp4

  it is working as it should.

  In case of network lost, the file will be downloaded from BEGINNING which is ofc not good at all.

  I did some research but didn’t found anything great, just these never implemented ideas :

  First is get the duration of downloaded video file and then downloading the video from duration +0.1

  Result High chances of FrameLoss. Dropped.

  Second is to download all ts files one by one ofc using any downloader, using custom script, then concat them.

  Result : Okay but needs space double of origial filesize, Dropped.

  Third is to Download First segment Convert it to MP4 then download second segment convert to mp4 then concat with First Segment and so on... while Keeping records.

  Result : Nice One but repeating same task for more than 2000 time, will it be Okay ? .

  is there any better workaround for this ?

  I’ve already showed the logic i tried.

• Apply sound effects on a video file

  31 mars 2013, par talhamalik22

  I am a little miss guided here and it seems i am totally lost. I am developing an android app and its core idea is to develop a video recorder and video player that applies some sound effects on the voice of the people or any sound that it records. Sound effect means that if i make a video of a person who is giving some speech then there should be no effect on video but his/her voice should appear like voice in talking tom cat app. I hope you understand the idea. Similar app is Helium Booth you can check it here. I am trying to use libraries like libSonic, libpd and tried to use XUGGLE too.
  Read somewhere that Xuggle is not really developed for mobile devices so left it. Now what i want is that it should apply this effect on voice on the run time i.e while recording the pitch of the sound should be alterd and saved immediately. And what i am getting with these libraries is that i can apply sound effect after video is recorded. So it means i need to rip the audio from the video and then apply the change in pitch and frequency and again concatenate this audio file with the old video file. And i have no idea how to do it.
  Please show me the right approach and tools if possible.

  Regards