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• Reliability of using FFMPEG in IOS application ?

  20 juin 2014, par 2vision2

  What i am trying to do :

  Trying to develop an Enterprise level IOS application with FFMPEG for video Processing.

  What i have done so far :

  Created a Linux based sample program with FFMPEG and made it work. Learnt how to use FFMPEG. I have already found the build instructions to build the FFMPEG packages
  for IOS.

  What help i need :

  Does apple allow to place the FFMPEG based application in IOS Application Store ?

  As there is no official support from ffmpeg community for IOS, how reliable the "FFMPEG-IOS" is, as i don’t want to get into any problems in future especially when apple releases a new version of os or the problem of ffmpeg only with IOS ?

• Video Surveliance application by connecting DVR

  14 mai 2014, par iMOBDEV

  I am trying to connect to the DVR so that I can view video recording on my IOS device, I tried to search a lot but could not find a single useful link to move ahead with connecting to the DVR. I found that, it can be done using FFMPEG, but could not be able to do what to do and how to do.

  What I need to do is : connect to the IP address and port where the DVR is configured, give username and password for that DVR to connect to the DVR. Something like following link :

  https://itunes.apple.com/en/app/vmeye/id365532547?mt=8

  Guide me with useful links to move ahead with connecting to the DVR.

• Extract PRORES Video with 5.1 audio from file with Mono and downmix

  29 mars 2021, par user2920456

  I am trying to extract a prores video with just 5.1 audio from a Prores with the below audio track layout. How can I do that using the FFmpeg library ?

  


  I could not figure out which command to use from the below ffmpeg library spec
https://trac.ffmpeg.org/wiki/AudioChannelManipulation#a2monostereo

  


  Desired Output PRORES to contain below track layout

  


  

  • track 0 - video (src Stream #0:0)

  


  • track 1 - FL (src Stream #0:1)

  


  • track 2 - FR (src Stream #0:2)

  


  • track 3 - FC (src Stream #0:3)

  


  • track 4 - LFE (src Stream #0:4)

  


  • track 5 - BL (src Stream #0:5)

  


  • track 6 - BR (src Stream #0:6)

  


  • track 7 - tmcd (src Stream #0:8)

  


  


  Below is the source video/audio Track Layout

  


  Stream #0:0(eng): Video: prores (HQ) (apch / 0x68637061), yuv422p10le(tv, bt709, progressive), 1920x1080, 171944 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 23976 tbn, 23976 tbc (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Video Media Handler
      encoder         : Apple ProRes 422 HQ
    Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (FL), s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:2(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (FR), s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:3(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:4(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (LFE), s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:5(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (BL), s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:6(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, 1 channels (BR), s32 (24 bit), 1152 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:7(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, downmix, s32 (24 bit), 2304 kb/s (default)
    Metadata:
      creation_time   : 2019-05-21T01:26:51.000000Z
      handler_name    : Apple Sound Media Handler
    Stream #0:8(eng): Data: none (tmcd / 0x64636D74) (default)
    Metadata:
      creation_time   : 2020-03-17T19:58:52.000000Z
      handler_name    : Time Code Media Handler
      reel_name       :
      timecode        : 00:00:00:00