Recherche avancée

Sur d’autres sites (13771)

• FFmpeg - How to scale and then drawtext ?

  19 janvier 2015, par vanderjas

  I’m trying to scale and crop a video and then apply some text over the top.

  I’m able to achieve each of these successfully using the following filters :

  Scale & Crop

  -vf scale=-1:640,crop=640:640:0:0

  Draw Text

  -vf drawtext="fontfile=Gotham-Book.ttf: text=TextHere:fontsize=72:fontcolor=gray@0.25:x=10:y=10”

  I presume I need to use some kind of filter complex but I am not having any luck.

  Can anyone help ?

  Thanks in advance !

• issue after video rotation how fix

  2 avril 2015, par Vahagn

  I have next code for rotate video

  OpenCVFrameConverter.ToIplImage converter2 = new OpenCVFrameConverter.ToIplImage() ;

  for (int i = firstIndex; i <= lastIndex; i++) {
  
      long t = timestamps[i % timestamps.length] - startTime;
  
      if (t >= 0) {
  
          if (t > recorder.getTimestamp()) {
  
              recorder.setTimestamp(t);
  
          }
  
          Frame g = converter2.convert(rotate(converter2.convertToIplImage(images[i % images.length]),9 0));
  
      recorder.record(g);
  
      }
  
  }

  images[i] - Frame in JavaCV
  after in video have green lines

  

  UPDATE
  Convertation function

  /*
  
   * Copyright (C) 2015 Samuel Audet
  
   *
  
   * This file is part of JavaCV.
  
   *
  
   * JavaCV is free software: you can redistribute it and/or modify
  
   * it under the terms of the GNU General Public License as published by
  
   * the Free Software Foundation, either version 2 of the License, or
  
   * (at your option) any later version (subject to the "Classpath" exception
  
   * as provided in the LICENSE.txt file that accompanied this code).
  
   *
  
   * JavaCV is distributed in the hope that it will be useful,
  
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  
   * GNU General Public License for more details.
  
   *
  
   * You should have received a copy of the GNU General Public License
  
   * along with JavaCV.  If not, see /www.gnu.org/licenses/>.
  
   */
  
  
  
  package com.example.vvardanyan.ffmpeg;
  
  
  
  import org.bytedeco.javacpp.BytePointer;
  
  import org.bytedeco.javacpp.Pointer;
  
  
  
  import java.nio.Buffer;
  
  
  
  import static org.bytedeco.javacpp.opencv_core.CV_16S;
  
  import static org.bytedeco.javacpp.opencv_core.CV_16U;
  
  import static org.bytedeco.javacpp.opencv_core.CV_32F;
  
  import static org.bytedeco.javacpp.opencv_core.CV_32S;
  
  import static org.bytedeco.javacpp.opencv_core.CV_64F;
  
  import static org.bytedeco.javacpp.opencv_core.CV_8S;
  
  import static org.bytedeco.javacpp.opencv_core.CV_8U;
  
  import static org.bytedeco.javacpp.opencv_core.CV_MAKETYPE;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_16S;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_16U;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_32F;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_32S;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_64F;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_8S;
  
  import static org.bytedeco.javacpp.opencv_core.IPL_DEPTH_8U;
  
  import static org.bytedeco.javacpp.opencv_core.IplImage;
  
  import static org.bytedeco.javacpp.opencv_core.Mat;
  
  
  
  /**
  
   * A utility class to map data between {@link Frame} and {@link IplImage} or {@link Mat}.
  
   * Since this is an abstract class, one must choose between two concrete classes:
  
   * {@link ToIplImage} or {@link ToMat}.
  
   *
  
   * @author Samuel Audet
  
   */
  
  public abstract class OpenCVFrameConverter<f> extends FrameConverter<f> {
  
      IplImage img;
  
      Mat mat;
  
  
  
      public static class ToIplImage extends OpenCVFrameConverter<iplimage> {
  
          @Override public IplImage convert(Frame frame) { return convertToIplImage(frame); }
  
      }
  
  
  
      public static class ToMat extends OpenCVFrameConverter<mat> {
  
          @Override public Mat convert(Frame frame) { return convertToMat(frame); }
  
      }
  
  
  
      public static int getFrameDepth(int depth) {
  
          switch (depth) {
  
              case IPL_DEPTH_8U:  case CV_8U:  return Frame.DEPTH_UBYTE;
  
              case IPL_DEPTH_8S:  case CV_8S:  return Frame.DEPTH_BYTE;
  
              case IPL_DEPTH_16U: case CV_16U: return Frame.DEPTH_USHORT;
  
              case IPL_DEPTH_16S: case CV_16S: return Frame.DEPTH_SHORT;
  
              case IPL_DEPTH_32F: case CV_32F: return Frame.DEPTH_FLOAT;
  
              case IPL_DEPTH_32S: case CV_32S: return Frame.DEPTH_INT;
  
              case IPL_DEPTH_64F: case CV_64F: return Frame.DEPTH_DOUBLE;
  
              default: return -1;
  
          }
  
      }
  
  
  
      public static int getIplImageDepth(Frame frame) {
  
          switch (frame.imageDepth) {
  
              case Frame.DEPTH_UBYTE:  return IPL_DEPTH_8U;
  
              case Frame.DEPTH_BYTE:   return IPL_DEPTH_8S;
  
              case Frame.DEPTH_USHORT: return IPL_DEPTH_16U;
  
              case Frame.DEPTH_SHORT:  return IPL_DEPTH_16S;
  
              case Frame.DEPTH_FLOAT:  return IPL_DEPTH_32F;
  
              case Frame.DEPTH_INT:    return IPL_DEPTH_32S;
  
              case Frame.DEPTH_DOUBLE: return IPL_DEPTH_64F;
  
              default:  return -1;
  
          }
  
      }
  
      static boolean isEqual(Frame frame, IplImage img) {
  
          return img != null &amp;&amp; frame != null &amp;&amp; frame.image != null &amp;&amp; frame.image.length > 0
  
                  &amp;&amp; frame.imageWidth == img.width() &amp;&amp; frame.imageHeight == img.height()
  
                  &amp;&amp; frame.imageChannels == img.nChannels() &amp;&amp; getIplImageDepth(frame) == img.depth()
  
                  &amp;&amp; new Pointer(frame.image[0]).address() == img.imageData().address()
  
                  &amp;&amp; frame.imageStride * Math.abs(frame.imageDepth) / 8 == img.widthStep();
  
      }
  
      public IplImage convertToIplImage(Frame frame) {
  
          if (frame == null) {
  
              return null;
  
          } else if (frame.opaque instanceof IplImage) {
  
              return (IplImage)frame.opaque;
  
          } else if (!isEqual(frame, img)) {
  
              int depth = getIplImageDepth(frame);
  
              img = depth &lt; 0 ? null : IplImage.createHeader(frame.imageWidth, frame.imageHeight, depth, frame.imageChannels)
  
                      .imageData(new BytePointer(new Pointer(frame.image[0].position(0)))).widthStep(frame.imageStride * Math.abs(frame.imageDepth) / 8);
  
          }
  
          return img;
  
      }
  
      public Frame convert(IplImage img) {
  
          if (img == null) {
  
              return null;
  
          } else if (!isEqual(frame, img)) {
  
              frame = new Frame();
  
              frame.imageWidth = img.width();
  
              frame.imageHeight = img.height();
  
              frame.imageDepth = getFrameDepth(img.depth());
  
              frame.imageChannels = img.nChannels();
  
              frame.imageStride = img.widthStep() * 8 / Math.abs(frame.imageDepth);
  
              frame.image = new Buffer[] { img.createBuffer() };
  
              frame.opaque = img;
  
          }
  
          return frame;
  
      }
  
  
  
      public static int getMatDepth(Frame frame) {
  
          switch (frame.imageDepth) {
  
              case Frame.DEPTH_UBYTE:  return CV_8U;
  
              case Frame.DEPTH_BYTE:   return CV_8S;
  
              case Frame.DEPTH_USHORT: return CV_16U;
  
              case Frame.DEPTH_SHORT:  return CV_16S;
  
              case Frame.DEPTH_FLOAT:  return CV_32F;
  
              case Frame.DEPTH_INT:    return CV_32S;
  
              case Frame.DEPTH_DOUBLE: return CV_64F;
  
              default:  return -1;
  
          }
  
      }
  
      static boolean isEqual(Frame frame, Mat mat) {
  
          return mat != null &amp;&amp; frame != null &amp;&amp; frame.image != null &amp;&amp; frame.image.length > 0
  
                  &amp;&amp; frame.imageWidth == mat.cols() &amp;&amp; frame.imageHeight == mat.rows()
  
                  &amp;&amp; frame.imageChannels == mat.channels() &amp;&amp; getMatDepth(frame) == mat.depth()
  
                  &amp;&amp; new Pointer(frame.image[0]).address() == mat.data().address()
  
                  &amp;&amp; frame.imageStride * Math.abs(frame.imageDepth) / 8 == (int)mat.step();
  
      }
  
      public Mat convertToMat(Frame frame) {
  
          if (frame == null) {
  
              return null;
  
          } else if (frame.opaque instanceof Mat) {
  
              return (Mat)frame.opaque;
  
          } else if (!isEqual(frame, mat)) {
  
              int depth = getMatDepth(frame);
  
              mat = depth &lt; 0 ? null : new Mat(frame.imageHeight, frame.imageWidth, CV_MAKETYPE(depth, frame.imageChannels),
  
                      new Pointer(frame.image[0].position(0)), frame.imageStride * Math.abs(frame.imageDepth) / 8);
  
          }
  
          return mat;
  
      }
  
      public Frame convert(Mat mat) {
  
          if (mat == null) {
  
              return null;
  
          } else if (!isEqual(frame, mat)) {
  
              frame = new Frame();
  
              frame.imageWidth = mat.cols();
  
              frame.imageHeight = mat.rows();
  
              frame.imageDepth = getFrameDepth(mat.depth());
  
              frame.imageChannels = mat.channels();
  
              frame.imageStride = (int)mat.step() * 8 / Math.abs(frame.imageDepth);
  
              frame.image = new Buffer[] { mat.createBuffer() };
  
              frame.opaque = mat;
  
          }
  
          return frame;
  
      }
  
  }
  
  </mat></iplimage></f></f>

• FFMPEG error with avformat_open_input returning -135

  28 avril 2015, par LawfulEvil

  I have a DLL one of my applications uses to receive video from RTSP cameras. Under the hood, the DLL uses FFMPEG libs from this release zip :

  ffmpeg-20141022-git-6dc99fd-win64-shared.7z

  We have a wide variety of cameras in house and most of them work just fine. However, on one particular Pelco Model Number : IXE20DN-OCP, I am unable to connect. I tested the camera and rtsp connection string on VLC and it connects to the camera just fine.

  I found the connection string here : http://www.ispyconnect.com/man.aspx?n=Pelco

  rtsp://IPADDRESS:554/1/stream1

  Oddly, even if I leave the port off of VLC, it connects, so I’m guessing its the default RTSP port or that VLC tries a variety of things based on your input.

  In any case, when I attempt to connect, I get an error from av_format_open_input. It returns a code of -135. When I looked in the error code list I didn’t see that listed. For good measure, I printed out all the errors in error.h just to see what their values were.

  DumpErrorCodes - Error Code : AVERROR_BSF_NOT_FOUND = -1179861752
  
  DumpErrorCodes - Error Code : AVERROR_BUG = -558323010
  
  DumpErrorCodes - Error Code : AVERROR_BUFFER_TOO_SMALL = -1397118274
  
  DumpErrorCodes - Error Code : AVERROR_DECODER_NOT_FOUND = -1128613112
  
  DumpErrorCodes - Error Code : AVERROR_DEMUXER_NOT_FOUND = -1296385272
  
  DumpErrorCodes - Error Code : AVERROR_ENCODER_NOT_FOUND = -1129203192
  
  DumpErrorCodes - Error Code : AVERROR_EOF = -541478725
  
  DumpErrorCodes - Error Code : AVERROR_EXIT = -1414092869
  
  DumpErrorCodes - Error Code : AVERROR_EXTERNAL = -542398533
  
  DumpErrorCodes - Error Code : AVERROR_FILTER_NOT_FOUND = -1279870712
  
  DumpErrorCodes - Error Code : AVERROR_INVALIDDATA = -1094995529
  
  DumpErrorCodes - Error Code : AVERROR_MUXER_NOT_FOUND = -1481985528
  
  DumpErrorCodes - Error Code : AVERROR_OPTION_NOT_FOUND = -1414549496
  
  DumpErrorCodes - Error Code : AVERROR_PATCHWELCOME = -1163346256
  
  DumpErrorCodes - Error Code : AVERROR_PROTOCOL_NOT_FOUND = -1330794744
  
  DumpErrorCodes - Error Code : AVERROR_STREAM_NOT_FOUND = -1381258232
  
  DumpErrorCodes - Error Code : AVERROR_BUG2 = -541545794
  
  DumpErrorCodes - Error Code : AVERROR_UNKNOWN = -1313558101
  
  DumpErrorCodes - Error Code : AVERROR_EXPERIMENTAL = -733130664
  
  DumpErrorCodes - Error Code : AVERROR_INPUT_CHANGED = -1668179713
  
  DumpErrorCodes - Error Code : AVERROR_OUTPUT_CHANGED = -1668179714
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_BAD_REQUEST = -808465656
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_UNAUTHORIZED = -825242872
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_FORBIDDEN = -858797304
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_NOT_FOUND = -875574520
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_OTHER_4XX = -1482175736
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_SERVER_ERROR = -1482175992

  Nothing even close to -135. I did find this error, sort of on stack overflow, here runtime error when linking ffmpeg libraries in qt creator where the author claims it is a DLL loading problem error. I’m not sure what led him to think that, but I followed the advice and used the dependency walker (http://www.dependencywalker.com/) to checkout what dependencies it thought my DLL needed. It listed a few, but they were already provided in my install package.

  To make sure it was picking them up, I manually removed them from the install and observed a radical change in program behavior(that being my DLL didn’t load and start to run at all).

  So, I’ve got a bit of init code :

  void FfmpegInitialize()
  
  {
  
   av_lockmgr_register(&LockManagerCb);
  
   av_register_all();
  
   LOG_DEBUG0("av_register_all returned\n");
  
  }

  Then I’ve got my main open connection routine ...

  int RTSPConnect(const char *URL, int width, int height, frameReceived callbackFunction)
  
  {
  
  
  
      int errCode =0;
  
      if ((errCode = avformat_network_init()) != 0)
  
      {
  
          LOG_ERROR1("avformat_network_init returned error code %d\n", errCode);  
  
      }
  
      LOG_DEBUG0("avformat_network_init returned\n");
  
      //Allocate space and setup the the object to be used for storing all info needed for this connection
  
      fContextReadFrame = avformat_alloc_context(); // free'd in the Close method
  
  
  
      if (fContextReadFrame == 0)
  
      {
  
          LOG_ERROR1("Unable to set rtsp_transport options.   Error code = %d\n", errCode);
  
          return FFMPEG_OPTION_SET_FAILURE;
  
      }
  
  
  
      LOG_DEBUG1("avformat_alloc_context returned %p\n", fContextReadFrame);
  
  
  
      AVDictionary *opts = 0;
  
      if ((errCode = av_dict_set(&opts, "rtsp_transport", "tcp", 0)) < 0)
  
      {
  
          LOG_ERROR1("Unable to set rtsp_transport options.   Error code = %d\n", errCode);
  
          return FFMPEG_OPTION_SET_FAILURE;
  
      }
  
      LOG_DEBUG1("av_dict_set returned %d\n", errCode);
  
  
  
      //open rtsp
  
      DumpErrorCodes();
  
      if ((errCode = avformat_open_input(&fContextReadFrame, URL, NULL, &opts)) < 0)
  
      {
  
          LOG_ERROR2("Unable to open avFormat RF inputs.   URL = %s, and Error code = %d\n", URL, errCode);       
  
          LOG_ERROR2("Error Code %d = %s\n", errCode, errMsg(errCode));       
  
          // NOTE context is free'd on failure.
  
          return FFMPEG_FORMAT_OPEN_FAILURE;
  
      }
  
  ...

  To be sure I didn’t misunderstand the error code I printed the error message from ffmpeg but the error isn’t found and my canned error message is returned instead.

  My next step was going to be hooking up wireshark on my connection attempt and on the VLC connection attempt and trying to figure out what differences(if any) are causing the problem and what I can do to ffmpeg to make it work. As I said, I’ve got a dozen other cameras in house that use RTSP and they work with my DLL. Some utilize usernames/passwords/etc as well(so I know that isn’t the problem).

  Also, my run logs :

  FfmpegInitialize - av_register_all returned
  
  Open - Open called.  Pointers valid, passing control.
  
  Rtsp::RtspInterface::Open - Rtsp::RtspInterface::Open called
  
  Rtsp::RtspInterface::Open - VideoSourceString(35) = rtsp://192.168.14.60:554/1/stream1
  
  Rtsp::RtspInterface::Open - Base URL = (192.168.14.60:554/1/stream1)
  
  Rtsp::RtspInterface::Open - Attempting to open (rtsp://192.168.14.60:554/1/stream1) for WxH(320x240) video
  
  RTSPSetFormatH264 - RTSPSetFormatH264
  
  RTSPConnect - Called
  
  LockManagerCb - LockManagerCb invoked for op 1
  
  LockManagerCb - LockManagerCb invoked for op 2
  
  RTSPConnect - avformat_network_init returned
  
  RTSPConnect - avformat_alloc_context returned 019E6000
  
  RTSPConnect - av_dict_set returned 0
  
  DumpErrorCodes - Error Code : AVERROR_BSF_NOT_FOUND = -1179861752
  
  ...
  
  DumpErrorCodes - Error Code : AVERROR_HTTP_SERVER_ERROR = -1482175992
  
  RTSPConnect - Unable to open avFormat RF inputs.   URL = rtsp://192.168.14.60:554/1/stream1, and Error code = -135
  
  RTSPConnect - Error Code -135 = No Error Message Available

  I’m going to move forward with wireshark but would like to know the origin of the -135 error code from ffmpeg. When I look at the code if ’ret’ is getting set to -135, it must be happening as a result of the return code from a helper method and not directly in the avformat_open_input method.

  https://www.ffmpeg.org/doxygen/2.5/libavformat_2utils_8c_source.html#l00398

  After upgrading to the latest daily ffmpeg build, I get data on wireshark. Real Time Streaming Protocol :

  Request: SETUP rtsp://192.168.14.60/stream1/track1 RTSP/1.0\r\n
  
  Method: SETUP
  
  URL: rtsp://192.168.14.60/stream1/track1
  
  Transport: RTP/AVP/TCP;unicast;interleaved=0-1
  
  CSeq: 3\r\n
  
  User-Agent: Lavf56.31.100\r\n
  
  \r\n

  The response to that is the first ’error’ that I can detect in the initiation.

  Response: RTSP/1.0 461 Unsupported Transport\r\n
  
  Status: 461
  
  CSeq: 3\r\n
  
  Date: Sun, Jan 04 1970 16:03:05 GMT\r\n
  
  \r\n

  I’m going to guess that... it means the transport we selected was unsupported. I quick check of the code reveals I picked ’tcp’. Looking through the reply to the DESCRIBE command, it appears :

  Media Protocol: RTP/AVP

  Further, when SETUP is issued by ffmpeg, it specifies :

  Transport: RTP/AVP/TCP;unicast;interleaved=0-1

  I’m going to try, on failure here to pick another transport type and see how that works. Still don’t know where the -135 comes from.