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• Audio out of sync, direct capture device stream (Windows 10)

  3 mai 2020, par user3459555

  Using ffplay, the video stays in sync using this command :

  



  ffplay -f dshow -rtbufsize 702000k video="Cam Link"
ffplay version git-2020-05-01-39fb1e9 Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200328
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 43.100 / 56. 43.100
  libavcodec     58. 82.100 / 58. 82.100
  libavformat    58. 42.101 / 58. 42.101
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 80.100 /  7. 80.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, dshow, from 'video=Cam Link':vq=    0KB sq=    0B f=0/0
  Duration: N/A, start: 141954.961000, bitrate: N/A
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080, 59.94 fps, 59.94 tbr, 10000k tbn, 10000k tbc
142992.53 M-V: -0.001 fd=   3 aq=    0KB vq=    0KB sq=    0B f=0/0


  



  Every controller button press stays in sync.

  



  The audio however :

  



  ffplay -f dshow audio="Digital Audio Interface (Cam Link)" -tune zerolatency
ffplay version git-2020-05-01-39fb1e9 Copyright (c) 2003-2020 the FFmpeg developers
  built with gcc 9.3.1 (GCC) 20200328
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
  libavutil      56. 43.100 / 56. 43.100
  libavcodec     58. 82.100 / 58. 82.100
  libavformat    58. 42.101 / 58. 42.101
  libavdevice    58.  9.103 / 58.  9.103
  libavfilter     7. 80.100 /  7. 80.100
  libswscale      5.  6.101 /  5.  6.101
  libswresample   3.  6.100 /  3.  6.100
  libpostproc    55.  6.100 / 55.  6.100
Input #0, dshow, from 'audio=Digital Audio Interface (Cam Link)':
  Duration: N/A, start: 143092.007000, bitrate: 1411 kb/s
    Stream #0:0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
143103.21 M-A:  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0


  



  Is always behined by about a full second.

  



  I'm not trying to record this, just trying to directly play from the Elgato Cam Link 1:1 output to my computer screen. When this is played in the Elgato Game Capture software, the video and audio are 1:1, no issues. So I know it's not the console or the capture device.

  


• FFMPEG failing to convert to ogv [closed]

  25 juillet 2012, par Todd R

  I have several videos I'm trying to convert to mp4, swf and ogv. I've got the mp4 and swf's working, but ogv is failing and I'm not sure why. I understand all the arguments you can pass to ffmpeg, but feel like getting the correct ones is a huge guessing game. Any suggestions on what I can change to get this to work would be much appreciated.

  Here's the command I'm using :

  ffmpeg -i /private/var/tmp/phpU5KPR7 -y -s 330X240 -acodec libvorbis -vcodec libtheora outputpath/Videos/1.ogv 2>&1

  And here are the results :

  2012-07-24T19:05:11-07:00 INFO (6): Creating ogv for 1 returned 1:
  
  2012-07-24T19:05:11-07:00 INFO (6): Array
  
  (
  
      [0] => ffmpeg version 0.8.6, Copyright (c) 2000-2011 the FFmpeg developers
  
      [1] =>   built on Nov 16 2011 19:56:59 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3)
  
      [2] =>   configuration: --enable-libmp3lame --enable-libfaac --enable-libtheora --enable-libvorbis --enable-nonfree --disable-yasm
  
      [3] =>   libavutil    51.  9. 1 / 51.  9. 1
  
      [4] =>   libavcodec   53.  7. 0 / 53.  7. 0
  
      [5] =>   libavformat  53.  4. 0 / 53.  4. 0
  
      [6] =>   libavdevice  53.  1. 1 / 53.  1. 1
  
      [7] =>   libavfilter   2. 23. 0 /  2. 23. 0
  
      [8] =>   libswscale    2.  0. 0 /  2.  0. 0
  
      [9] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/private/var/tmp/phpU5KPR7':
  
      [10] =>   Metadata:
  
      [11] =>     major_brand     : 3gp4
  
      [12] =>     minor_version   : 768
  
      [13] =>     compatible_brands: 3gp43gp6
  
      [14] =>   Duration: 00:00:03.17, start: 0.000000, bitrate: 433 kb/s
  
      [15] =>     Stream #0.0(eng): Audio: amrnb, 8000 Hz, 1 channels, flt, 12 kb/s
  
      [16] =>     Stream #0.1(eng): Video: mpeg4, yuv420p, 352x288 [PAR 1:1 DAR 11:9], 411 kb/s, 13.87 fps, 15 tbr, 15k tbn, 15 tbc
  
      [17] => WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
  
      [18] => Incompatible sample format 'flt' for codec 'libfaac', auto-selecting format 's16'
  
      [19] => [buffer @ 0x101001480] w:352 h:288 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
      [20] => [scale @ 0x101002560] w:352 h:288 fmt:yuv420p -> w:330 h:240 fmt:yuv420p flags:0x4
  
      [21] => Output #0, mp4, to 'outputpath/Videos/1.mp4':
  
      [22] =>   Metadata:
  
      [23] =>     major_brand     : 3gp4
  
      [24] =>     minor_version   : 768
  
      [25] =>     compatible_brands: 3gp43gp6
  
      [26] =>     encoder         : Lavf53.4.0
  
      [27] =>     Stream #0.0(eng): Video: mpeg4, yuv420p, 330x240 [PAR 8:9 DAR 11:9], q=2-31, 300 kb/s, 20 tbn, 20 tbc
  
      [28] =>     Stream #0.1(eng): Audio: libfaac, 44100 Hz, 1 channels, s16, 0 kb/s
  
      [29] => Stream mapping:
  
      [30] =>   Stream #0.1 -> #0.0
  
      [31] =>   Stream #0.0 -> #0.1
  
      [32] => Press [q] to stop, [?] for help
  
      [33] => Warning, using s16 intermediate sample format for resampling
  
      [34] => frame=   62 fps=  0 q=6.4 Lsize=     253kB time=00:00:03.08 bitrate= 670.6kbits/s dup=18 drop=0
  
      [35] => video:238kB audio:12kB global headers:0kB muxing overhead 1.096923%
  
      [36] => ffmpeg version 0.8.6, Copyright (c) 2000-2011 the FFmpeg developers
  
      [37] =>   built on Nov 16 2011 19:56:59 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3)
  
      [38] =>   configuration: --enable-libmp3lame --enable-libfaac --enable-libtheora --enable-libvorbis --enable-nonfree --disable-yasm
  
      [39] =>   libavutil    51.  9. 1 / 51.  9. 1
  
      [40] =>   libavcodec   53.  7. 0 / 53.  7. 0
  
      [41] =>   libavformat  53.  4. 0 / 53.  4. 0
  
      [42] =>   libavdevice  53.  1. 1 / 53.  1. 1
  
      [43] =>   libavfilter   2. 23. 0 /  2. 23. 0
  
      [44] =>   libswscale    2.  0. 0 /  2.  0. 0
  
      [45] => Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/private/var/tmp/phpU5KPR7':
  
      [46] =>   Metadata:
  
      [47] =>     major_brand     : 3gp4
  
      [48] =>     minor_version   : 768
  
      [49] =>     compatible_brands: 3gp43gp6
  
      [50] =>   Duration: 00:00:03.17, start: 0.000000, bitrate: 433 kb/s
  
      [51] =>     Stream #0.0(eng): Audio: amrnb, 8000 Hz, 1 channels, flt, 12 kb/s
  
      [52] =>     Stream #0.1(eng): Video: mpeg4, yuv420p, 352x288 [PAR 1:1 DAR 11:9], 411 kb/s, 13.87 fps, 15 tbr, 15k tbn, 15 tbc
  
      [53] => Incompatible sample format 'flt' for codec 'libvorbis', auto-selecting format 's16'
  
      [54] => [buffer @ 0x1010021a0] w:352 h:288 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
      [55] => [scale @ 0x101002520] w:352 h:288 fmt:yuv420p -> w:330 h:240 fmt:yuv420p flags:0x4
  
      [56] => [libvorbis @ 0x101801e00] oggvorbis_encode_init: init_encoder failed
  
      [57] => Output #0, ogg, to 'outputpath/Videos/1.ogv':
  
      [58] =>     Stream #0.0(eng): Video: libtheora, yuv420p, 330x240 [PAR 8:9 DAR 11:9], q=2-31, 200 kb/s, 90k tbn, 15 tbc
  
      [59] =>     Stream #0.1(eng): Audio: libvorbis, 8000 Hz, 1 channels, s16, 64 kb/s
  
      [60] => Stream mapping:
  
      [61] =>   Stream #0.1 -> #0.0
  
      [62] =>   Stream #0.0 -> #0.1
  
      [63] => Error while opening encoder for output stream #0.1 - maybe incorrect parameters such as bit_rate, rate, width or height
  
  )

• FFMPEG:Merging Audio(.mp3) and single image convert them into a Video

  5 juin 2013, par Nitish Singla

  I want to merge IMAGE + AUDIO and convert them into video using FFMPEG library,i compiled the library successfully,and got libfmpeg.so.but getting problem to execute the ffmpeg command through java code.This is command which i am using...
  "ffmpeg -i image8.jpg -i file.m4a -acodec copy test.mp4"
  if i execute this ffmpeg command through CMD,my video.mp4 file is successfully created,but if exceute same command through my Activity,it doesnot create any file.

  MY CODE IS :

  public class Mpeg extends Activity

  static {
  
  
  
      System.loadLibrary("ffmpeg");
  
  
  
  }
  
  
  
  @Override
  
  protected void onCreate(Bundle savedInstanceState) {
  
      super.onCreate(savedInstanceState);
  
      setContentView(R.layout.activity_mpeg);

  File mf = Environment.getExternalStorageDirectory() ;

      String livestream = mf.getAbsoluteFile()+"smile.png";
  
  
  
      String folderpth = mf.getAbsoluteFile()+"RABBA.MP3";
  
  
  
      //String output="/home/saicomputer/game.mp4";
  
  
  
      String output = new File(Environment.getExternalStorageDirectory(), "video.mp4").getAbsolutePath();
  
      Log.i("Test", "Let's set output to " + output);
  
  
  
      String cmd="ffmpeg -i "+ livestream +" -i "+ folderpth +" -acodec copy "+ output;
  
  
  
       Log.e("chck plzzzzz", "after "+ cmd);
  
  
  
      //String jaiho="ffmpeg -i image8.jpg -i file.m4a -acodec copy test.mp4";
  
  
  
      try{
  
  
  
      Process p = Runtime.getRuntime().exec(cmd);
  
  
  
      }
  
  catch(Exception e)
  
  {
  
      System.out.println("exception"+e);
  
  }

  enter code here
  
  CONSOLE OUTPUT-
  
  06-05 17:58:11.466: E/image(1189): imageeeeeeeee /mnt/sdcard/smile.png
  
  06-05 17:58:11.466: E/Test(1189): songggggggggg /mnt/sdcard/RABBA.MP3
  
  06-05 17:58:11.476: E/Test(1189): outputttttt /mnt/sdcard/video.mp4
  
  06-05 17:58:11.476: E/chck plzzzzz(1189): after ffmpeg -i /mnt/sdcard/smile.png -i      /mnt/sdcard/RABBA.MP3 -acodec copy /mnt/sdcard/video.mp4
  
  
  
  enter code here
  
  06-05 17:58:10.686: D/dalvikvm(1189): Trying to load lib /data/data/com.example.myfmpeg /lib/libffmpeg.so 0x412a5cf0
  
  06-05 17:58:10.756: I/dalvikvm(1189): threadid=3: reacting to signal 3
  
  06-05 17:58:10.955: D/dalvikvm(1189): Added shared lib /data/data/com.example.myfmpeg/lib/libffmpeg.so 0x412a5cf0
  
  06-05 17:58:10.955: D/dalvikvm(1189): No JNI_OnLoad found in /data/data/com.example.myfmpeg/lib/libffmpeg.so 0x412a5cf0, skipping init
  
  06-05 17:58:11.024: I/dalvikvm(1189): Wrote stack traces to '/data/anr/traces.txt'
  
  06-05 17:58:11.215: I/dalvikvm(1189): threadid=3: reacting to signal 3
  
  06-05 17:58:11.326: I/dalvikvm(1189): Wrote stack traces to '/data/anr/traces.txt'
  
  06-05 17:58:11.466: E/image(1189): imageeeeeeeee /mnt/sdcard/smile.png
  
  06-05 17:58:11.466: E/Test(1189): songggggggggg /mnt/sdcard/RABBA.MP3
  
  06-05 17:58:11.476: E/Test(1189): outputttttt /mnt/sdcard/video.mp4
  
  06-05 17:58:11.476: E/chck plzzzzz(1189): after ffmpeg -i /mnt/sdcard/smile.png -i /mnt/sdcard/RABBA.MP3 -acodec copy /mnt/sdcard/video.mp4
  
  0 6-05 17:58:11.896: E/AndroidRuntime(1189): FATAL EXCEPTION: main
  
  06-05 17:58:11.896: E/AndroidRuntime(1189): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myfmpeg/com.example.myfmpeg.Mpeg}: java.lang.RuntimeException: java.io.IOException: Error running exec(). Command: [ffmpeg, -i, /mnt/sdcard/smile.png, -i, /mnt/sdcard/RABBA.MP3, -acodec, copy, /mnt/sdcard/video.mp4] Working Directory: null Environment: null
  
  06-05 17:58:11.896: E/AndroidRuntime(1189):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
  
  06-05 17:58:11.896: E/AndroidRuntime(1189):     at 
  
  06-05 17:58:11.896: E/AndroidRuntime(1189): Caused by: java.lang.RuntimeException: java.io.IOException: Error running exec(). Command: [ffmpeg, -i, /mnt/sdcard/smile.png, -i, /mnt/sdcard/RABBA.MP3, -acodec, copy, /mnt/sdcard/video.mp4] Working Directory: null       Environment: null