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• Android mp4 Media File Won't play

  17 juillet 2014, par Liron

  I had the same problem as here which I thought was because the files (recorded on iOS) were encoded as .mov instead of .mp4.

  I then changed the encoding mechanism on my iOS app to encode them as mp4, and I’m still seeing the same problem.

  When I load the file with

  File videoFile = ...;
  
  videoView.setVideoPath(videoFile.getAbsolutePath());
  
  videoView.start();

  I get E/MediaPlayer(2069): error (1, -2147483648).

  When I load the file with the following (from the link above).

  Uri uri = Uri.parse(VideoProvider.CONTENT_URI_BASE + Uri.encode(videoFile.getAbsolutePath()));
  
  videoView.setVideoURL(url);
  
  videoView.start();

  I get this in logcat

  07-17 08:05:58.283: W/VideoView(2276): Unable to open content: content://com.companyname.VideoProvider.files.files/%2Fdata%2Fdata%2Fcom.companyname.myappname%2Fcache%2FiX0mXVPxih.mp4
  
  07-17 08:05:58.283: W/VideoView(2276): java.io.IOException: setDataSource failed.: status=0x80000000

  ffmpeg tells me the following about the media file :

  ffmpeg -i media.mp4
  
  ffmpeg version 2.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  built on Mar 26 2014 15:29:01 with Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
  
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.2 --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
  
    libavutil      52. 66.100 / 52. 66.100
  
    libavcodec     55. 52.102 / 55. 52.102
  
    libavformat    55. 33.100 / 55. 33.100
  
    libavdevice    55. 10.100 / 55. 10.100
  
    libavfilter     4.  2.100 /  4.  2.100
  
    libavresample   1.  2.  0 /  1.  2.  0
  
    libswscale      2.  5.102 /  2.  5.102
  
    libswresample   0. 18.100 /  0. 18.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'media.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 1
  
      compatible_brands: mp41mp42isom
  
      creation_time   : 2014-07-17 08:59:24
  
    Duration: 00:00:08.14, start: 0.000000, bitrate: 1084 kb/s
  
      Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 360x480, 1027 kb/s, 24.46 fps, 29.97 tbr, 600 tbn, 1200 tbc (default)
  
      Metadata:
  
        creation_time   : 2014-07-17 08:59:24
  
        handler_name    : Core Media Video
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 62 kb/s (default)
  
        Metadata:
  
          creation_time   : 2014-07-17 08:59:24
  
          handler_name    : Core Media Audio

  Any idea why this file might be failing to load ?

  EDIT : Seems that this is mostly an issue when running in the emulator, but on a device I seem to have succeeded it getting it to work if I use a SurfaceView and MediaPlayer instead of VideoView.

• Dissappearing characters in youtube-dl, ffmpeg, and windows

  4 juin 2014, par user3407161

  so what happens is that if the video title has a symbol that isn’t supported by your current locale then ffmpeg won’t be able to get to that file properly.

  Here’s one example

  ►2 HOURS BEST MELODIC DUBSTEP MIX APRIL 2013◄ ヽ( ≧ω≦)ﾉ

  as you may or may not be able to see, lots of symbols from unicode.

  The problem is that in cmd and ffmpeg, though cmd can see

  ►2 HOURS BEST MELODIC DUBSTEP MIX APRIL 2013◄ ヽ( ≧ω≦)ﾉ

  ffmpeg only sees

  2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ

  This is the exact error message (i’m using youtube-dl)

  [ffmpeg] Adding metadata to 'C:\Music\ToBeDone\2014-06-01\►2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013◄ ヽ( ≧ω≦)ﾉ.mp4'
  
  ERROR: C:\Music\ToBeDone\2014-06-01\2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ.mp4: No such file or directory
  
  ERROR: WARNING: unable to obtain file audio codec with ffprobe

  After some research i’ve determined that by changing the system locale you can change which symbols cmd can support.

  However

  ヽ

  Used to appear as a box in a question mark in United states locale. In japanese locale it appears as it does on your screen right now.

  the problem with

  ◄

  is that even though it’s not appearing as a question mark in a box (it’s appearing as how it should be), ffmpeg (or cmd) can’t detect it properly.

  (Refer back to the error message, i’ll repost it below.)

  [ffmpeg] Adding metadata to 'C:\Music\ToBeDone\2014-06-01\►2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013◄ ヽ( ≧ω≦)ﾉ.mp4'
  
  ERROR: C:\Music\ToBeDone\2014-06-01\2 HOURS DUBSTEP_DRUMSTEP MIX AUGUST 2013 ヽ(≧ω≦)ﾉ.mp4: No such file or directory
  
  ERROR: WARNING: unable to obtain file audio codec with ffprobe

  So as you can see, I think cmd passed on the symbol correctly to ffmpeg seeing from the adding metadata line, but when it actually does the operation ffmpeg loses

  ► and ◄

  Could this be a bug with ffmpeg ? MY workaround so far with incompatible symbols was to change the system locale, but I don’t think i can do that with these two symbols...

  These are the unique characters that i need to have a locale that supports

  Ö
  
  
  
  ◄ ヽ( ≧ω≦)ﾉ
  
  
  
  ( ͡° ͜ʖ ͡°)
  
  
  
  (_≧∇≦)
  
  
  
  †
  
  
  
  【

  More info on the problem in general

  https://github.com/rg3/youtube-dl/issues/2999

  and this is what’s going on (Batch Script)

  @echo off
  
  setlocal
  
  cd C:\youtube-dl
  
  
  
  set /p "var1=Enter URL: " %=% pause
  
  if defined var1 set "var1=%var1:"=%"
  
  set "var2=%date:/=-%" 
  
  set "var3=%%(title)s.%%(ext)s"
  
  youtube-dl "%var1%" -ci -o "C:\Music\ToBeDone\%var2%\%var3%" -f best -x --no-mtime --add-metadata 
  
  youtube-dl "%var1%" --skip-download -ci -o "C:\Music\ToBeDone\%var2%\Thumbnail\%var3%" --write-   thumbnail
  
  youtube-dl "%var1%" --skip-download -ci -o "C:\Music\ToBeDone\%var2%\Description\%var3%" --write-description

• FFMPEG : Redirecting Matroska muxed data to socket

  14 août 2016, par Parth Shah

  I am using FFMPEG library to mux H.264 and AAC frames to Matroska (.mkv) file. I can do that both using command line and C program.

  Now, instead of writing the muxed matroska data in to file I want to write these muxed data directly on to socket or pipe. My actual goal is to write a C program that send muxed data to socket and server will receive this muxed data.

  I tried using protocol tcp. They are working with the matroska format.
  So, My C program is able to send muxed data successfully over socket and server is able to receive this muxed data.

  But when I apply ffprobe command over the received file, I am getting duration and bitrate field N/A. and when I tried to play this file with vlc i am unable to seek the file and getting garbage duration.

  Below the output of the ffprobe.

  ffprobe version N-65784-g50a35f0 Copyright (c) 2007-2014 the FFmpeg developers
  
    built on Aug 25 2014 12:31:36 with gcc 4.7 (Ubuntu/Linaro 4.7.3-1ubuntu1)
  
    configuration: 
  
    libavutil      54.  5.100 / 54.  5.100
  
    libavcodec     56.  0.101 / 56.  0.101
  
    libavformat    56.  1.100 / 56.  1.100
  
    libavdevice    56.  0.100 / 56.  0.100
  
    libavfilter     5.  0.101 /  5.  0.101
  
    libswscale      3.  0.100 /  3.  0.100
  
    libswresample   1.  1.100 /  1.  1.100
  
  Input #0, matroska,webm, from 'Array.mkv':
  
    Metadata:
  
      ENCODER         : Lavf54.29.104
  
    Duration: N/A, start: 1412858260.281000, bitrate: N/A
  
      Stream #0:0: Video: mjpeg, yuvj422p(pc, bt470bg), 2000x1496 [SAR 1:1 DAR 250:187], 27 fps, 27 tbr, 1k tbn, 1k tbc (default)
  
      Stream #0:1: Video: mjpeg, yuvj422p(pc, bt470bg), 2000x1496 [SAR 1:1 DAR 250:187], 27 fps, 27 tbr, 1k tbn, 1k tbc (default)
  
      Stream #0:2: Video: mjpeg, yuvj422p(pc, bt470bg), 2000x1496 [SAR 1:1 DAR 250:187], 27 fps, 27 tbr, 1k tbn, 1k tbc (default)
  
      Stream #0:3: Video: mjpeg, yuvj422p(pc, bt470bg), 2000x1496 [SAR 1:1 DAR 250:187], 27 fps, 27 tbr, 1k tbn, 1k tbc (default)

  As You can see Duration and Bitrate field shows N/A. However I am getting correct startTime.

  Any help or advice ? Thank you in advance.