Recherche avancée

Sur d’autres sites (11570)

• IOS streaming video from iPhone to server - ffmpeg

  30 mars 2013, par DaveInSydney

  I have successfully written code that captures 6 second long mp4 video segments on an iPhone 4S and uploads them to a server without losing any frames between segments. This works well however I am now trying to change the mp4 container to mpeg2 ts and then upload the ts file. I am trying to figure out how ffmpeg works but I am lost. Has anyone got a bit of sample code that takes an mp4 file as input and spits out an mpeg2 ts file.

  Any help would be most appreciated.

• Converting Quicktime (.mov ) from iPhone to mp4

  24 mars 2020, par user3094755

  On iPhones running iOS 11, if a video is pre-recorded and uploaded I get the following errors :- ( ie, the video is recoded on the iPhone and then uploaded as an attachment ).

  $ ./ffmpeg -i .mov -vcodec h264 -acodec mp4 test-output.mp4
  
  FFmpeg version CVS, Copyright (c) 2000-2004 Fabrice Bellard
  
  Mac OSX universal build for ffmpegX
  
    configuration:  --enable-memalign-hack --enable-mp3lame --enable-gpl --disable-vhook --disable-ffplay --disable-ffserver --enable-a52 --enable-xvid --enable-faac --enable-faad --enable-amr_nb --enable-amr_wb --enable-pthreads --enable-x264 
  
    libavutil version: 49.0.0
  
    libavcodec version: 51.9.0
  
    libavformat version: 50.4.0
  
    built on Apr 15 2006 04:58:19, gcc: 4.0.1 (Apple Computer, Inc. build 5250)
  
  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5597b8]mov: header not found !!! (err:0, moov:0, mdat:0) pos:3189455560
  
  .mov: Error while opening file
  
  $

  If the video is recorded and then transferred to a Desktop uploaded and then converted it works OK.

  If I use a ‘live’ recording then all is OK.

  I found this…

  https://www.howtogeek.com/327689/how-to-make-your-iphone-use-jpg-and-mp4-files-instead-of-heif-and-hevc/

  Which seems to suggest iOS 11 will use different formats, but this appears to make no difference whatever the settings are for ‘High Efficiency / Most Compatible’.

  Any ideas ?

• play decoded raw audio data in iPhone

  6 avril 2012, par user1310596

  i am developing one streaming application for iOS and i am getting all audio packets correctly and decoded also but now i am totally confused about how to play it on iPhone.. I have decoded packets using ffmpeg.. All codes i get so far are playing audio from a file but i my case i have to play audio packets which i am getting from server in an order they are coming.. I dont want to save all packets to a file so any code that will help me to solve my problem is appreciated..

  Thnak you...