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• Prevent libavformat (FFmpeg) from adding "ENCODER" tag to output / help stripping the tags

  2 mars 2014, par Wyatt8740

  I made a bash script that transfers audio or video metadata from one file to another, regardless of media container format, via FFMpeg. My problem is that FFMpeg consistently adds a 'ENCODER' tag.

  Example :

  Before running through FFMpeg :

   File : track01.cdda.flac

    Metadata:
  
      ALBUM           : Wish You Were Here
  
      ARTIST          : Pink Floyd
  
      COPYRIGHT       : 1975 Harvest Records
  
      DATE            : 1975
  
      GENRE           : Experimental Rock
  
      TITLE           : Shine On You Crazy Diamond
  
      track           : 1

  After running through FFMpeg :

   File : track01-iphone-alac.m4a

    Metadata:
  
      ALBUM=Wish You Were Here
  
      ARTIST=Pink Floyd
  
      COPYRIGHT=1975 Harvest Records
  
      DATE=1975
  
      GENRE=Experimental Rock
  
      TITLE=Shine On You Crazy Diamond
  
      track=1
  
      ENCODER=Lavf55.12.100

  So really, I want to either force FFMpeg to not add the 'ENCODER' tag, or I want to strip that tag off afterwards. Is there a way to do this ? I really don't want to spend hours trying to compile FFMpeg again on my Pentium 4 HT - the only working computer I have at the moment. I'd prefer not to have to use another program unless it's related enough to FFMpeg or MPlayer/Mencoder that I won't have to install anything new if I have those installed.

• Problems accessing codecs with ggplot and gganimate

  19 décembre 2016, par noLongerRandom

  Using gganimate. Can’t figure out how to properly access functionality of ffmpeg, specifically I want to change the codec I’m using in the video file I’m outputting.

  # load packages
  
  library(ggplot)
  
  library(animation)
  
  library(gganimate)
  
  
  
  # Here's my data.frame
  
  myDf <- data.frame(
  
      year = c(1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014), 
  
      bottom50 = c(0.195, 0.191, 0.187, 0.192, 0.196, 0.205, 0.207, 0.210, 0.209, 0.204, 0.203, 0.204, 0.205, 0.203, 0.202, 0.200, 0.200, 0.201, 0.199, 0.195, 0.190, 0.183, 0.179, 0.179, 0.177, 0.172, 0.169, 0.169, 0.168, 0.166, 0.158, 0.159, 0.158, 0.154, 0.151, 0.148, 0.149, 0.148, 0.146, 0.149, 0.148, 0.145, 0.142, 0.138, 0.135, 0.137, 0.137, 0.136, 0.130, 0.127, 0.123, 0.127, 0.125), top1 = c(0.126, 0.127, 0.129, 0.128, 0.126, 0.123, 0.122, 0.115, 0.110, 0.111, 0.111, 0.109, 0.106, 0.105, 0.105, 0.107, 0.108, 0.111, 0.107, 0.110, 0.112, 0.115, 0.125, 0.125, 0.122, 0.133, 0.149, 0.145, 0.145, 0.139, 0.150, 0.146, 0.147, 0.153, 0.160, 0.166, 0.169, 0.177, 0.183, 0.173, 0.171, 0.172, 0.183, 0.194, 0.201, 0.199, 0.195, 0.185, 0.198, 0.196, 0.208, 0.196, 0.202)
  
  )
  
  
  
  #Basic plot
  
  p <- ggplot(myDf, aes(x = year, y = bottom50, frame = year)) + 
  
      geom_line(color = "dodgerblue") + 
  
      geom_line(aes(y = top1), color = "darkred")

  The non-animated version gets me what I want :

  

  And I get an animation version output to video with :

  gganimate(p, interval = .1, title_frame = FALSE, "income.mp4")

  That’s fine, but I want to change some the output parameters, specifically : alter the dimensions, the frame rate, and use a different codec.

  # change some of the options
  
  ani.options(ani.height = 1080, ani.width = 1920, 
  
              interval = 0.04166667, other.opts = "-vcodec qtrle -f mov")
  
  # re-animate
  
  gganimate(p, title_frame = FALSE, "income.mov")

  That gives me the following error :

  Error in animation_saver(saver, filename) : 
  
    Don't know how to save animation of type mov

  I’m using ’.mov’ as my file extension because I’m trying to change to the Animation codec (so it’s no longer a .mp4 wrapper). I’ve got ffmpeg installed, so this is probably a syntax issue. But the documentation isn’t very clear here ; gganimate doesn’t have any documentation on changing codecs (or outputting any video besides an mp4), and the animation package is light on specifics as well.

• Unable to load FFMPEG library "java.lang.UnsatisfiedLinkError : dlopen failed :"

  25 janvier 2020, par Vicky

  I am trying to build and run old ffmpeg project which, it was in eclipse and now i am trying to run it from Android studio, but app crash displaying below error.

  2020-01-25 11:57:52.621 26360-26360/org.lance.ffplayer E/AndroidRuntime: FATAL EXCEPTION: main
  
  Process: org.lance.ffplayer, PID: 26360
  
  java.lang.UnsatisfiedLinkError: dlopen failed: library "./obj/local/armeabi/libffmpeg.so" not found
  
      at java.lang.Runtime.loadLibrary0(Runtime.java:1016)
  
      at java.lang.System.loadLibrary(System.java:1669)
  
      at org.lance.ffplayer.FFmpeg.<clinit>(FFmpeg.java:17)
  
      at org.lance.ffplayer.FFmpeg.getInstance(FFmpeg.java:87)
  
      at org.lance.ffplayer.FileBrowser.<init>(FileBrowser.java:41)
  
      at org.lance.ffplayer.UIActivity.onCreate(UIActivity.java:39)
  
      at android.app.Activity.performCreate(Activity.java:7327)
  
      at android.app.Activity.performCreate(Activity.java:7318)
  
      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1275)
  
      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3101)
  
      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3264)
  
      at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
  
      at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
  
      at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
  
      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1955)
  
      at android.os.Handler.dispatchMessage(Handler.java:106)
  
      at android.os.Looper.loop(Looper.java:214)
  
      at android.app.ActivityThread.main(ActivityThread.java:7078)
  
      at java.lang.reflect.Method.invoke(Native Method)
  
      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
  
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:974)
  
  </init></clinit>

  Below are configuration of my project,

  Android studio configuration image link - 1

  Android studio configuration image link - 2

  I have spent my entire day to solve this issue but everything failed. Anybody has idea about what i am missing and doing wrong ?
  Thanks in advance.