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• Evolution #3071 (Nouveau) : Performance boucle DATA sur CSV

  9 octobre 2013, par lrt rln

  Il semble que l’analyse CSV avant passage dans la boucle DATA pose de gros soucis de perf. Le temps d’exécution passe rapidement à 2/3 minutes (avec gros set_time_limit) de traitement sur des fichiers >10Mo. A titre comparatif un simple fgetcsv avec un while (($data = fgetcsv($handle, 1000, ",")) est 50 fois plus rapide en exécution que le traitement par la boucle DATA. Il y a sans doute moyen d’optimiser /inc/csv.php pour éviter un plantage assez systèmatique de PHP sur bouclage de fichiers de + 5000 lignes.

• Fast video compression like Whatsapp

  5 août 2015, par Douglas Anunciação

  I need to speed up video compression in my Android app. I’m using FFMPEG and it takes 3 minutes to compress 80MB video. Does anyone knows a better solution ?

  The command I’m using is :

  /data/data/com.moymer/app_bin/ffmpeg -y -i /storage/emulated/0/DCIM/Camera/VID_20150803_164811363.mp4 -s 640x352 -r 25 -vcodec mpeg4 -ac 1 -preset ultrafast -strict -2 /storage/emulated/0/DCIM/Camera/compressed_video.mp4

  I’m running this command using FFMPEG for Android from this github repo : https://github.com/guardianproject/android-ffmpeg-java

  The code to use FFMPEG in my project is inside an AsyncTask and is copied below :

      @Override
  
      protected Object doInBackground(Object... params) {
  
  
  
          ItemRoloDeCamera compressedVideo = new ItemRoloDeCamera();
  
  
  
          File videoInputFile = new File(video.getSdcardPath());
  
  
  
          File videoFolderFile = videoInputFile.getParentFile();
  
  
  
          File videoOutputFile = new File(videoFolderFile, "video_comprimido_moymer.mp4");
  
  
  
          if (videoFolderFile.exists())
  
              android.util.Log.e("COMPRESS VIDEO UTILS", "video folder exist");
  
          else
  
              android.util.Log.e("COMPRESS VIDEO UTILS", "video folder DON'T exist");
  
  
  
          if (videoInputFile.exists())
  
              android.util.Log.e("COMPRESS VIDEO UTILS", "video input file exist");
  
          else
  
              android.util.Log.e("COMPRESS VIDEO UTILS", "video input file DON'T exist");
  
  
  
          if (videoOutputFile.exists())
  
              android.util.Log.e("COMPRESS VIDEO UTILS", "video output file exist");
  
          else
  
              android.util.Log.e("COMPRESS VIDEO UTILS", "video output file DON'T exist");
  
  
  
          FfmpegController ffmpegController;
  
  
  
          try {
  
  
  
              ffmpegController = new FfmpegController(context, videoFolderFile);
  
  
  
              Clip clipIn = new Clip(videoInputFile.getAbsolutePath());
  
  
  
              ffmpegController.getInfo(clipIn, new ShellUtils.ShellCallback() {
  
                  @Override
  
                  public void shellOut(String shellLine) {
  
                      videoInfo.add(shellLine);
  
                  }
  
  
  
                  @Override
  
                  public void processComplete(int exitValue) {
  
                      videoInfo.add(String.valueOf(exitValue));
  
                  }
  
              });
  
  
  
              int rotate = getRotateMetadata();
  
  
  
              Clip clipOut = new Clip(videoOutputFile.getAbsolutePath());
  
              clipOut.videoFps = "24";
  
              clipOut.videoBitrate = 512;
  
              clipOut.audioChannels = 1;
  
              clipOut.width = 640;
  
              clipOut.height = 352;
  
  
  
              if (rotate == 90)
  
                  clipOut.videoFilter = "transpose=1";
  
              else if (rotate == 180)
  
                  clipOut.videoFilter = "transpose=1,transpose=1";
  
              else if (rotate == 270)
  
                  clipOut.videoFilter = "transpose=1,transpose=1,transpose=1";
  
  
  
              millisDuration = getVideoDuration(videoInputFile.getAbsolutePath());
  
  
  
              float secondsDuration = millisDuration / 1000f;
  
  
  
              clipOut.duration = secondsDuration;
  
  
  
              ffmpegController.processVideo(clipIn, clipOut, true, new ShellUtils.ShellCallback() {
  
                  @Override
  
                  public void shellOut(String shellLine) {
  
  
  
                      android.util.Log.e("COMPRESS VIDEO UTILS", "shellOut - " + shellLine);
  
  
  
                      float percentage = getTimeMetadata(shellLine);
  
  
  
                      if (percentage >= 0f)
  
                          publishProgress(percentage);
  
  
  
                  }
  
  
  
                  @Override
  
                  public void processComplete(int exitValue) {
  
                      android.util.Log.e("COMPRESS VIDEO UTILS", "proccess complete - " + exitValue);
  
                  }
  
              });
  
  
  
  
  
          } catch (IOException e) {
  
              e.printStackTrace();
  
          } catch (Exception e) {
  
              e.printStackTrace();
  
          } finally {
  
  
  
              if (videoOutputFile.exists()) {
  
  
  
                  android.util.Log.e("COMPRESS VIDEO UTILS", "finished ffmpeg ---> video output file exist");
  
  
  
                  compressedVideo.setSdcardPath(videoOutputFile.getAbsolutePath());
  
  
  
                  return compressedVideo;
  
  
  
              } else
  
                  android.util.Log.e("COMPRESS VIDEO UTILS", "finished ffmpeg ---> video output file DON'T exist");
  
  
  
          }
  
  
  
          return compressedVideo;
  
  
  
      }
  
  
  
      private float getTimeMetadata(String shellLine) {
  
  
  
          float percentage = -1;
  
  
  
          if (shellLine.contains("time=")) {
  
  
  
              String[] timeLine = shellLine.split("=");
  
  
  
              String time = timeLine[5];
  
              time = time.replace("bitrate", "");
  
              time = time.trim();
  
  
  
  //            String source = "00:10:17";
  
              String[] tokens = time.split(":");
  
              int secondsToMs = (int) (Float.parseFloat(tokens[2]) * 1000);
  
              int minutesToMs = Integer.parseInt(tokens[1]) * 60000;
  
              int hoursToMs = Integer.parseInt(tokens[0]) * 3600000;
  
              long timeInMillis = secondsToMs + minutesToMs + hoursToMs;
  
  
  
              percentage = (timeInMillis * 100.0f) / millisDuration;
  
  
  
          }
  
  
  
          return percentage;
  
  
  
      }
  
  
  
      private int getRotateMetadata() {
  
  
  
          int rotate = 0;
  
  
  
          String durationString = "";
  
  
  
          for (String shellLine : videoInfo) {
  
  
  
              if (shellLine.contains("rotate")) {
  
  
  
                  //rotate          : 270
  
  
  
                  String[] rotateLine = shellLine.split(":");
  
  
  
                  rotate = Integer.parseInt(rotateLine[1].trim());
  
  
  
              }
  
  
  
          }
  
  
  
          return rotate;
  
  
  
      }
  
  
  
      public static long getVideoDuration(String videoPath) {
  
  
  
          MediaMetadataRetriever retriever = new MediaMetadataRetriever();
  
  
  
          retriever.setDataSource(videoPath);
  
  
  
          String time = retriever
  
                  .extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
  
  
  
          long timeInmillisec = Long.parseLong(time);
  
  
  
          return timeInmillisec;
  
  
  
      }

  The only change I made in the processVideo method was to add the following lines when building the commmand :

  cmd.add("-preset");
  
  cmd.add("ultrafast");

• Unable to stream file onto localhost - ffmpeg

  18 octobre 2013, par trueblue

  I am new to ffmpeg/ffserver. I am trying to stream a local file named Trial onto a localhost using ffserver. I want to run the file in browser as http://localhost:8090/feed1.ffm
  I am executing the below command in Ubuntu(Trial is a Mpeg TS file) :

    ffmpeg -i Trial http://localhost:8090/feed1.ffm

  Upon execution of above command I am getting below error :

  FFmpeg version SVN-r0.5.9-4:0.5.9-0ubuntu0.10.04.3, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: --extra-version=4:0.5.9-0ubuntu0.10.04.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 1 / 52.20. 1
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libavfilter    0. 4. 0 /  0. 4. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
    built on Jan 24 2013 19:42:59, gcc: 4.4.3
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 119.88 (120000/1001) -> 59.94 (60000/1001)
  
  Input #0, mpegts, from 'Trial':
  
    Duration: 00:00:04.22, start: 0.177633, bitrate: 40368 kb/s
  
    Program 2 
  
      Stream #0.0[0x21]: Video: mpeg2video, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 45000 kb/s, 59.94 tbr, 90k tbn, 119.88 tbc
  
  Output #0, ffm, to 'http://localhost:8090/feed1.ffm':
  
      Stream #0.0: Video: flv, yuv420p, 352x288, q=1-5, 100 kb/s, 1000k tbn, 15 tbc
  
      Stream #0.1: Audio: mp2, 44100 Hz, mono, s16, 32 kb/s
  
      Stream #0.2: Video: mpeg1video, yuv420p, 160x128, q=3-31, 64 kb/s, 1000k tbn, 3 tbc
  
      Stream #0.3: Audio: mp2, 22050 Hz, mono, s16, 64 kb/s
  
      Stream #0.4: Video: msmpeg4, yuv420p, 352x240, q=3-31, 256 kb/s, 1000k tbn, 15 tbc
  
  Could not find input stream matching output stream #0.1

  My ffserver.conf file goes like this :

  # Port on which the server is listening. You must select a different
  
  # port from your standard HTTP web server if it is running on the same
  
  # computer.
  
  Port 8090
  
  
  
  # Address on which the server is bound. Only useful if you have
  
  # several network interfaces.
  
  BindAddress 0.0.0.0
  
  
  
  # Number of simultaneous HTTP connections that can be handled. It has
  
  # to be defined *before* the MaxClients parameter, since it defines the
  
  # MaxClients maximum limit.
  
  MaxHTTPConnections 2000
  
  
  
  # Number of simultaneous requests that can be handled. Since FFServer
  
  # is very fast, it is more likely that you will want to leave this high
  
  # and use MaxBandwidth, below.
  
  MaxClients 1000
  
  
  
  # This the maximum amount of kbit/sec that you are prepared to
  
  # consume when streaming to clients.
  
  MaxBandwidth 1000
  
  
  
  # Access log file (uses standard Apache log file format)
  
  # '-' is the standard output.
  
  CustomLog -
  
  
  
  # Suppress that if you want to launch ffserver as a daemon.
  
  NoDaemon
  
  
  
  
  
  ##################################################################
  
  # Definition of the live feeds. Each live feed contains one video
  
  # and/or audio sequence coming from an ffmpeg encoder or another
  
  # ffserver. This sequence may be encoded simultaneously with several
  
  # codecs at several resolutions.
  
  
  
  <feed>
  
  
  
  # You must use &#39;ffmpeg&#39; to send a live feed to ffserver. In this
  
  # example, you can type:
  
  #
  
  # ffmpeg http://localhost:8090/feed1.ffm
  
  
  
  # ffserver can also do time shifting. It means that it can stream any
  
  # previously recorded live stream. The request should contain:
  
  # "http://xxxx?date=[YYYY-MM-DDT][[HH:]MM:]SS[.m...]".You must specify
  
  # a path where the feed is stored on disk. You also specify the
  
  # maximum size of the feed, where zero means unlimited. Default:
  
  # File=/tmp/feed_name.ffm FileMaxSize=5M
  
  File /tmp/feed1.ffm
  
  FileMaxSize 5M
  
  
  
  # You could specify
  
  # ReadOnlyFile /saved/specialvideo.ffm
  
  # This marks the file as readonly and it will not be deleted or updated.
  
  
  
  # Specify launch in order to start ffmpeg automatically.
  
  # First ffmpeg must be defined with an appropriate path if needed,
  
  # after that options can follow, but avoid adding the http:// field
  
  #Launch ffmpeg
  
  
  
  # Only allow connections from localhost to the feed.
  
  ACL allow 127.0.0.1
  
  
  
  </feed>
  
  
  
  
  
  
  
  <stream>
  
  Feed feed1.ffm
  
  Format swf
  
  VideoCodec flv
  
  VideoFrameRate 15
  
  VideoBufferSize 80000
  
  VideoBitRate 100
  
  VideoQMin 1
  
  VideoQMax 5
  
  VideoSize 352x288
  
  PreRoll 0
  
  Noaudio
  
  </stream>
  
  
  
  ##################################################################
  
  # Now you can define each stream which will be generated from the
  
  # original audio and video stream. Each format has a filename (here
  
  # &#39;test1.mpg&#39;). FFServer will send this stream when answering a
  
  # request containing this filename.
  
  
  
  <stream>
  
  
  
  # coming from live feed &#39;feed1&#39;
  
  Feed feed1.ffm
  
  
  
  # Format of the stream : you can choose among:
  
  # mpeg       : MPEG-1 multiplexed video and audio
  
  # mpegvideo  : only MPEG-1 video
  
  # mp2        : MPEG-2 audio (use AudioCodec to select layer 2 and 3 codec)
  
  # ogg        : Ogg format (Vorbis audio codec)
  
  # rm         : RealNetworks-compatible stream. Multiplexed audio and video.
  
  # ra         : RealNetworks-compatible stream. Audio only.
  
  # mpjpeg     : Multipart JPEG (works with Netscape without any plugin)
  
  # jpeg       : Generate a single JPEG image.
  
  # asf        : ASF compatible streaming (Windows Media Player format).
  
  # swf        : Macromedia Flash compatible stream
  
  # avi        : AVI format (MPEG-4 video, MPEG audio sound)
  
  Format mpeg
  
  
  
  # Bitrate for the audio stream. Codecs usually support only a few
  
  # different bitrates.
  
  AudioBitRate 32
  
  
  
  # Number of audio channels: 1 = mono, 2 = stereo
  
  AudioChannels 1
  
  
  
  # Sampling frequency for audio. When using low bitrates, you should
  
  # lower this frequency to 22050 or 11025. The supported frequencies
  
  # depend on the selected audio codec.
  
  AudioSampleRate 44100
  
  
  
  # Bitrate for the video stream
  
  VideoBitRate 64
  
  
  
  
  
  # Ratecontrol buffer size
  
  VideoBufferSize 40
  
  
  
  # Number of frames per second
  
  VideoFrameRate 3
  
  
  
  # Size of the video frame: WxH (default: 160x128)
  
  # The following abbreviations are defined: sqcif, qcif, cif, 4cif, qqvga,
  
  # qvga, vga, svga, xga, uxga, qxga, sxga, qsxga, hsxga, wvga, wxga, wsxga,
  
  # wuxga, woxga, wqsxga, wquxga, whsxga, whuxga, cga, ega, hd480, hd720,
  
  # hd1080
  
  VideoSize 160x128
  
  
  
  # Transmit only intra frames (useful for low bitrates, but kills frame rate).
  
  #VideoIntraOnly
  
  
  
  # If non-intra only, an intra frame is transmitted every VideoGopSize
  
  # frames. Video synchronization can only begin at an intra frame.
  
  VideoGopSize 12
  
  
  
  # More MPEG-4 parameters
  
  # VideoHighQuality
  
  # Video4MotionVector
  
  
  
  # Choose your codecs:
  
  #AudioCodec mp2
  
  #VideoCodec mpeg1video
  
  
  
  # Suppress audio
  
  #NoAudio
  
  
  
  # Suppress video
  
  #NoVideo
  
  
  
  #VideoQMin 3
  
  #VideoQMax 31
  
  
  
  # Set this to the number of seconds backwards in time to start. Note that
  
  # most players will buffer 5-10 seconds of video, and also you need to allow
  
  # for a keyframe to appear in the data stream.
  
  #Preroll 15
  
  
  
  # ACL:
  
  
  
  # You can allow ranges of addresses (or single addresses)
  
  #ACL ALLOW <first address="address"> <last address="address">
  
  
  
  # You can deny ranges of addresses (or single addresses)
  
  #ACL DENY <first address="address"> <last address="address">
  
  
  
  # You can repeat the ACL allow/deny as often as you like. It is on a per
  
  # stream basis. The first match defines the action. If there are no matches,
  
  # then the default is the inverse of the last ACL statement.
  
  #
  
  # Thus &#39;ACL allow localhost&#39; only allows access from localhost.
  
  # &#39;ACL deny 1.0.0.0 1.255.255.255&#39; would deny the whole of network 1 and
  
  # allow everybody else.
  
  
  
  </last></first></last></first></stream>
  
  
  
  
  
  ##################################################################
  
  # Example streams
  
  
  
  
  
  # Multipart JPEG
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format mpjpeg
  
  #VideoFrameRate 2
  
  #VideoIntraOnly
  
  #NoAudio
  
  #Strict -1
  
  #</stream>
  
  
  
  
  
  # Single JPEG
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format jpeg
  
  #VideoFrameRate 2
  
  #VideoIntraOnly
  
  ##VideoSize 352x240
  
  #NoAudio
  
  #Strict -1
  
  #</stream>
  
  
  
  
  
  
  
  # Flash
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format swf
  
  #VideoFrameRate 2
  
  #VideoIntraOnly
  
  #NoAudio
  
  #</stream>
  
  
  
  
  
  # ASF compatible
  
  
  
  <stream>
  
  Feed feed1.ffm
  
  Format asf
  
  VideoFrameRate 15
  
  VideoSize 352x240
  
  VideoBitRate 256
  
  VideoBufferSize 40
  
  VideoGopSize 30
  
  AudioBitRate 64
  
  StartSendOnKey
  
  </stream>
  
  
  
  
  
  # MP3 audio
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format mp2
  
  #AudioCodec mp3
  
  #AudioBitRate 64
  
  #AudioChannels 1
  
  #AudioSampleRate 44100
  
  #NoVideo
  
  #</stream>
  
  
  
  
  
  # Ogg Vorbis audio
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Title "Stream title"
  
  #AudioBitRate 64
  
  #AudioChannels 2
  
  #AudioSampleRate 44100
  
  #NoVideo
  
  #</stream>
  
  
  
  
  
  # Real with audio only at 32 kbits
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format rm
  
  #AudioBitRate 32
  
  #NoVideo
  
  #NoAudio
  
  #</stream>
  
  
  
  
  
  # Real with audio and video at 64 kbits
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format rm
  
  #AudioBitRate 32
  
  #VideoBitRate 128
  
  #VideoFrameRate 25
  
  #VideoGopSize 25
  
  #NoAudio
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # A stream coming from a file: you only need to set the input
  
  # filename and optionally a new format. Supported conversions:
  
  #    AVI -> ASF
  
  
  
  #<stream>
  
  #File "/usr/local/httpd/htdocs/tlive.rm"
  
  #NoAudio
  
  #</stream>
  
  
  
  #<stream>
  
  #File "/usr/local/httpd/htdocs/test.asf"
  
  #NoAudio
  
  #Author "Me"
  
  #Copyright "Super MegaCorp"
  
  #Title "Test stream from disk"
  
  #Comment "Test comment"
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # RTSP examples
  
  #
  
  # You can access this stream with the RTSP URL:
  
  #   rtsp://localhost:5454/test1-rtsp.mpg
  
  #
  
  # A non-standard RTSP redirector is also created. Its URL is:
  
  #   http://localhost:8090/test1-rtsp.rtsp
  
  
  
  #<stream>
  
  #Format rtp
  
  #File "/usr/local/httpd/htdocs/test1.mpg"
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # SDP/multicast examples
  
  #
  
  # If you want to send your stream in multicast, you must set the
  
  # multicast address with MulticastAddress. The port and the TTL can
  
  # also be set.
  
  #
  
  # An SDP file is automatically generated by ffserver by adding the
  
  # &#39;sdp&#39; extension to the stream name (here
  
  # http://localhost:8090/test1-sdp.sdp). You should usually give this
  
  # file to your player to play the stream.
  
  #
  
  # The &#39;NoLoop&#39; option can be used to avoid looping when the stream is
  
  # terminated.
  
  
  
  #<stream>
  
  #Format rtp
  
  #File "/usr/local/httpd/htdocs/test1.mpg"
  
  #MulticastAddress 224.124.0.1
  
  #MulticastPort 5000
  
  #MulticastTTL 16
  
  #NoLoop
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # Special streams
  
  
  
  # Server status
  
  
  
  <stream>
  
  Format status
  
  
  
  # Only allow local people to get the status
  
  ACL allow localhost
  
  ACL allow 192.168.0.0 192.168.255.255
  
  
  
  #FaviconURL http://pond1.gladstonefamily.net:8080/favicon.ico
  
  </stream>
  
  
  
  
  
  # Redirect index.html to the appropriate site
  
  
  
  <redirect>
  
  URL http://www.ffmpeg.org/
  
  </redirect>

  Kindly anyone please assist me whether I am missing something or do i need to change my server.conf file ? I have referred many websites. But still I am unable to fix it. Thanks in advance.