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Sur d’autres sites (8024)

  • FFMPEG integration on iphone/ ipad project

    12 avril 2020, par Chandramani

    Can any One Tell me how do i integrate FFMPEG in my iphone/ ipad project.i m using Xcode 4.
i searched a lot but did not find any useful Link .please tell me step by step procedure to integrate FFMpeg in my project.

    



    thanks,

    


  • ffmpeg is failing to convert mov files from iPhone 4

    11 octobre 2014, par skat

    I’m having issue with converting mov files from iPhone 4.

    Running this command :

    I, [2014-09-15T03:48:33.245231 #9676]  INFO -- : Running transcoding...
    
ffmpeg -y -i /Users/lun/client/bookagoo/public/uploads/5405e9b0486f75a36c100000/video/1410727644xqxzdoxf-IMG_0040_1_.MOV -ss 5 -vframes 1 -f image2 /Users/lun/client/bookagoo/public/uploads/5405e9b0486f75a36c100000/video/1410727644xqxzdoxf-IMG_0040_1_-edited.jpg
    

    
E, [2014-09-15T03:48:33.321367 #9676] ERROR -- : Failed encoding...
    
ffmpeg -y -i /Users/lun/client/bookagoo/public/uploads/5405e9b0486f75a36c100000/video  /1410727644xqxzdoxf-IMG_0040_1_.MOV -ss 5 -vframes 1 -f image2 /Users/lun/client/bookagoo/public/uploads/5405e9b0486f75a36c100000/video/1410727644xqxzdoxf-IMG_0040_1_-edited.jpg

    My ffmpeg gives me errors like this :

    FFMPEG::Error: Failed encoding.Errors: no output file created. Full output: ffmpeg version 2.3.1 Copyright (c) 2000-2014 the FFmpeg developers
    
built on Aug 20 2014 02:23:29 with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
    
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.3.1 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-nonfree --enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis --enable-libvpx
    
libavutil      52. 92.100 / 52. 92.100
    
libavcodec     55. 69.100 / 55. 69.100
    
libavformat    55. 48.100 / 55. 48.100
    
libavdevice    55. 13.102 / 55. 13.102
    
libavfilter     4. 11.100 /  4. 11.100
    
libavresample   1.  3.  0 /  1.  3.  0
    
libswscale      2.  6.100 /  2.  6.100
    
libswresample   0. 19.100 /  0. 19.100
    
libpostproc    52.  3.100 / 52.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/lun/client/bookagoo/public/uploads/5405e9b0486f75a36c100000/video/1410641311nyv99k1j-IMG_0040_1_.MOV':
    
Metadata:
    
  major_brand     : qt
    
  minor_version   : 0
    
  compatible_brands: qt
    
creation_time   : 2014-07-20 09:47:08
    
model           : iPhone 4
    
model-rus       : iPhone 4
    
encoder         : 7.0.4
    
encoder-rus     : 7.0.4
    
date            : 2014-07-20T13:47:08+0400
    
date-rus        : 2014-07-20T13:47:08+0400
    
make            : Apple
    
make-rus        : Apple
    
Duration: 00:00:01.84, start: 0.000000, bitrate: 827 kb/s
    
  Stream #0:0(und): Video: h264 (Baseline) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 480x360, 742 kb/s, 23.98 fps, 23.98 tbr, 600 tbn, 1200 tbc (default)
    
Metadata:
    
  rotate          : 90
    
  creation_time   : 2014-07-20 09:47:08
    
  handler_name    : Core Media Data Handler
    
  encoder         : H.264
    
Side data:
    
  displaymatrix: rotation of -90.00 degrees
    
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 63 kb/s (default)
    
Metadata:
    
  creation_time   : 2014-07-20 09:47:08
    
  handler_name    : Core Media Data Handler
    
[swscaler @ 0x7fe1e9800600] deprecated pixel format used, make sure you did set range correctly
    
Output #0, image2, to '/Users/lun/client/bookagoo/public/uploads/5405e9b0486f75a36c100000/video/1410641311nyv99k1j-IMG_0040_1_-edited.jpg':
    
Metadata:
    
major_brand     : qt
    
minor_version   : 0
    
compatible_brands: qt
    
make-rus        : Apple
    
model           : iPhone 4
    
model-rus       : iPhone 4
    
make            : Apple
    
encoder         : Lavf55.48.100
    
date            : 2014-07-20T13:47:08+0400
    
date-rus        : 2014-07-20T13:47:08+0400
    
Stream #0:0(und): Video: mjpeg, yuvj420p, 480x360, q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    
Metadata:
    
  rotate          : 90
    
  creation_time   : 2014-07-20 09:47:08
    
  handler_name    : Core Media Data Handler
    
  encoder         : Lavc55.69.100 mjpeg
    
Stream mapping:
    
Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
    
Press [q] to stop, [?] for help
    
frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A
    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

    It’s only happening for mov files. There are couple of tricky places it looks like it’s trying to take screenshot from a video.

    Maybe anyone witnessed anything similar and can give me a tip ?

  • Live Stream using .m3u8 and .ts files with iPhone as server

    26 février 2015, par Bhumit

    I am trying to accomplish a task to live stream from iPhone camera. I have done some research and found that i can use .m3u8 files for streaming live video with should contain .ts(Mpeg-2) files .

    Now the file which i have on my iPhone is .mp4 file and it does not work with .m3u8, so i figured out i will have to convert .mp4 to .ts for that , but i have not succeeded in doing so.

    I found that it is possible to convert video ffmpeg lib as mentioned in this article here. I have successfully imported ffmpeg library but not able figure out how can i use it to convert a video as i am using this for first time.

    One another thing apple documentation says

    There are a number of hardware and software encoders that can create
    MPEG-2 transport streams carrying MPEG-4 video and AAC audio in real
    time.

    What is being said here ? is there any other way i can use .mp4 files for live streaming without converting them from iOS ?

    Let me know if i am not clear, i can provide more information .Any suggestion is appreciated. I would like to know am i on a right path here ?

    EDIT

    I am adding more info to my question, so basically what i am asking is , we can convert .mp4 video to .ts using following command

    ffmpeg -i file.mp4 -acodec libfaac -vcodec libx264 -an -map 0 -f segment -segment_time 10 -segment_list test.m3u8 -segment_format mpegts -vbsf h264_mp4toannexb -flags -global_header stream%05d.ts

    How can i use ffmpeg library to do what this command does in iOS.

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