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Sur d’autres sites (3023)

  • PHP Sort Order Process Codeiginiter

    5 août 2017, par Alan El-nino Malmsteen

    i use php codeigniter to manage video using FFMPEG, but i dont know how to delete original video after convertion successful.

    if(!($_FILES["upload_video"]["type"] == "video/mp4"))
    
    {
    
    $prename = $r.'.'.$ext;
    
    $video = $prename.'.mp4';
    
    $directory_path  = "/home/templates/videos/".$prename;
    
    $directory_path_full = "/home/templates/videos/".$prename;
    
    exec("ffmpeg -i ".$directory_path_full." ".$directory_path.".mp4"); 
    

    
    // Delete original format video
    
    $this->load->helper("file");
    
    unlink($directory_path_full); 
    

    
    }else{
    
    $video = $r.'.'.$ext;
    
    }

    When i use "unlink" it work good to delete file, but the video is corrupt (maybe php directly delete it when converting progress)
    So, can you help me to create sort order php process for this case ?

  • write video in OpenCV FOURCC codec

    25 juillet 2018, par burak akdemir

    I am trying to save the results of YOLO to .avi file. Having already seen this post... (I even asked the question there) I could NOT find any solution. Here is the code in which I am trying to save the .avi.

    {
    
    CvSize size;
    
    size.width = disp->width;
    
    size.height = disp->height;
    

    
    static CvVideoWriter* output_video = NULL;    // cv::VideoWriter output_video;
    
    if (output_video == NULL)
    
    {
    
        printf("\n SRC output_video = %p \n", output_video);
    
        const char* output_name = "test_dnn_out.avi";
    
        output_video = cvCreateVideoWriter(output_name, CV_FOURCC('D', 'I', 'V', 'X'), 25, size, 1);
    
        printf("\n cvCreateVideoWriter, DST output_video = %p  \n", output_video);
    
    }
    
    cvWriteFrame(output_video, disp);
    
}

    Trying plenty of codecs ( changing CV_FOURCC('D', 'I', 'V', 'X') ) I get errors below :

    **CODEC :-1**
    

    
**ERROR**
    

    
SRC output_video = (nil)  OpenCV: FFMPEG: tag 0xffffffff/'����' is not
    
found (format 'avi / AVI (Audio Video Interleaved)')' OpenCV Error:
    
Unsupported format or combination of formats (Gstreamer Opencv backend
    
does not support this codec.) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1522 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1522:
    
error: (-210) Gstreamer Opencv backend does not support this codec. in
    
function CvVideoWriter_GStreamer::open
    

    

    
**CODEC: CV_FOURCC('M', 'J', 'P', 'G')**
    

    
**ERROR**
    

    
SRC output_video = (nil)  OpenCV Error: Unspecified error (GStreamer:
    
cannot put pipeline to play ) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1690 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1690:
    
error: (-2) GStreamer: cannot put pipeline to play  in function
    
CvVideoWriter_GStreamer::open
    

    

    
**CODEC: CV_FOURCC('P','I','M','1')** SRC output_video = (nil) 
    

    
**ERROR**
    

    
** (Demo:6801): CRITICAL **: gst_ffmpeg_cfg_set_property: assertion 'qdata- 
    
size == sizeof (gint64)' failed OpenCV Error: Unspecified
    
error (GStreamer: cannot put pipeline to play ) in
    
CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1690 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1690:
    
error: (-2) GStreamer: cannot put pipeline to play  in function
    
CvVideoWriter_GStreamer::open
    

    

    

    
**CODEC:CV_FOURCC('M', 'P', '4', '2')**
    

    
**ERROR**
    

    
SRC output_video = (nil) 
    

    
** (Demo:7437): CRITICAL **: gst_ffmpeg_cfg_set_property: assertion 'qdata- 
    
size == sizeof (gint64)' failed OpenCV Error: Unspecified
    
error (GStreamer: cannot put pipeline to play ) in
    
CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1690 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1690:
    
error: (-2) GStreamer: cannot put pipeline to play  in function
    
CvVideoWriter_GStreamer::open
    

    

    
**CODEC::CV_FOURCC('D', 'I', 'V', '3')**
    

    
**ERROR** 
    

    
SRC output_video = (nil)  OpenCV Error: Unspecified error (GStreamer:
    
cannot put pipeline to play ) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1690 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1690:
    
error: (-2) GStreamer: cannot put pipeline to play  in function
    
CvVideoWriter_GStreamer::open
    

    

    
**CODEC:CV_FOURCC('D', 'I', 'V', 'X')**
    

    
**ERROR** 
    

    
SRC output_video = (nil)  OpenCV Error: Unspecified error (GStreamer:
    
cannot put pipeline to play ) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1690 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1690:
    
error: (-2) GStreamer: cannot put pipeline to play  in function
    
CvVideoWriter_GStreamer::open
    

    

    

    
**CODEC:CV_FOURCC('U', '2', '6', '3')**
    

    
**ERROR** 
    

    
OpenCV Error: Unspecified error (GStreamer: cannot put pipeline to
    
play ) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1690 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1690:
    
error: (-2) GStreamer: cannot put pipeline to play  in function
    
CvVideoWriter_GStreamer::open
    

    

    
cvCreateVideoWriter, DST output_video = (nil)  
    

    
SRC output_video = (nil)  Could not open codec 'h263': Unspecified
    
error
    

    
** (Demo:8342): CRITICAL **: gst_ffmpeg_cfg_set_property: assertion 'qdata- 
    
size == sizeof (gint64)' failed
    

    

    

    
**CODEC:CV_FOURCC('I', '2', '6', '3')**
    

    
**ERROR** 
    

    
SRC output_video = (nil)  Could not find encoder for codec id 21:
    
Encoder not found OpenCV Error: Unspecified error (GStreamer: cannot
    
link elements ) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1626 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1626:
    
error: (-2) GStreamer: cannot link elements  in function
    
CvVideoWriter_GStreamer::open
    

    

    
cvCreateVideoWriter, DST output_video = (nil)  
    

    

    
**CODEC:CV_FOURCC('F', 'L', 'V', '1')**
    

    
**ERROR** 
    

    
SRC output_video = (nil)  OpenCV Error: Unspecified error (GStreamer:
    
cannot link elements ) in CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1626 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1626:
    
error: (-2) GStreamer: cannot link elements  in function
    
CvVideoWriter_GStreamer::open
    

    

    
cvCreateVideoWriter, DST output_video = (nil)
    

    

    
**CODEC:CV_FOURCC('i','Y', 'U', 'V')**
    

    
**ERROR** 
    

    
SRC output_video = (nil)  OpenCV: FFMPEG: tag 0x56555969/'iYUV' is not
    
supported with codec id 14 and format 'avi / AVI (Audio Video
    
Interleaved)' OpenCV Error: Unsupported format or combination of
    
formats (Gstreamer Opencv backend does not support this codec.) in
    
CvVideoWriter_GStreamer::open, file
    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp, line
    
1522 VIDEOIO(cvCreateVideoWriter_GStreamer (filename, fourcc, fps,
    
frameSize, is_color)): raised OpenCV exception:
    

    
/home/akde/opencv-3.3.0/modules/videoio/src/cap_gstreamer.cpp:1522:
    
error: (-210) Gstreamer Opencv backend does not support this codec. in
    
function CvVideoWriter_GStreamer::open

    Here is my setup

    -ubuntu 16.04

    -opencv 3.3.0

    -ffmpeg version 2.8.14

    In my opinion, the problem is very likely to be about codecs. Because people solved the same problem by using different codecs. Even though I tried many codecs and have ffmepeg installed correctly I could NOT find any solution. So what should I do ? Looking forward to your replies...

  • Mix 2 mp3 files with FFmpeg for Android

    24 mai 2017, par Thankgod Richard

    I am developing something similar to a karaoke app. I have a sound file(beat) and a recorded file(voice) from android mediarecorder. I am trying to mix the two files to become one file that plays the same time. I have set up ffmpeg provided by writingminds and everything is working fine. I am not familiar with ffmpeg commands so searched for and got few commands that can achieve the task for me. This is the code i got :

      String files = "-i " + currentFile + " -i " + someFile.getAbsolutePath();
    
            String output = mFileName + "/recorded/test.mp3";
    
            String cmd = "ffmpeg "+files+
    
                    " -filter_complex \"aevalsrc=0:d=10[s1];[s1][1:a]concat=n=2:v=0:a=1[ac1];[0:a][ac1]amix[aout]\" -map [aout] -c:a libmp3lame " + output;

    But it not working. this is the error i got :

    04-01 12:09:26.598 21300-21300/com.shixels.thankgodrichard.mixer I/fpeg: ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
    
                                                                           built with gcc 4.8 (GCC)
    
                                                                           configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
    
                                                                           libavutil      55. 17.103 / 55. 17.103
    
                                                                           libavcodec     57. 24.102 / 57. 24.102
    
                                                                           libavformat    57. 25.100 / 57. 25.100
    
                                                                           libavdevice    57.  0.101 / 57.  0.101
    
                                                                           libavfilter     6. 31.100 /  6. 31.100
    
                                                                           libswscale      4.  0.100 /  4.  0.100
    
                                                                           libswresample   2.  0.101 /  2.  0.101
    
                                                                           libpostproc    54.  0.100 / 54.  0.100
    
                                                                         Output #0, mp3, to 'ffmpeg -i /storage/emulated/0/MyStudio/temps/1491044929409.mp3 -i /storage/emulated/0/temp.mp3 -filter_complex "aevalsrc=0:d=10[s1];[s1][1:a]concat=n=2:v=0:a=1[ac1];[0:a][ac1]amix[aout]" -map [aout] -c:a libmp3lame /storage/emulated/0/recorded/test.mp3':
    
                                                                         Output file #0 does not contain any stream
    
04-01 12:09:26.599 21300-21300/com.shixels.thankgodrichard.mixer I/fpeg: finished

    I read some answers here saying it depends on the version of the ffmpeg your using. I am using the latest ffmpeg for android by writingminds.

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