Newest 'ffmpeg' Questions - Stack Overflow

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  • FFMPEG- Is it possible to overlay multiple images over a video at specified intervals ?

    22 mars 2017, par hack

    I want to overlay multiple images (Say 5) in a 120 second video at specified intervals , like, between 3-7 seconds overlay image 1. Is is it possible without splitting the video in multiple parts?

  • How to record live streamed video from rtsp url in android

    22 mars 2017, par Astro

    I am doing an android application. In my application I need to record live streamed video.And here I am using rtsp protocol and ffmpeg library to stream and record video.Live streaming is working properly, but video recording is not working. I think it's a problem of URL Connection I am used here to record video.But I don't know what is the correct connection method.I search lot about this, but can't find anything. If anybody know this please help me.

    This is my startRecording() method

    private void startRecording() {

    try {

        URL url = new URL(path);
        URLConnection urlConnection1 = url.openConnection();
        in1 = new BufferedInputStream(urlConnection1.getInputStream());

    } catch (IOException e) {
        e.printStackTrace();
    } 

    try {

        mIn = new MjpegInputStream(in1,MIN_ARRAY_LENGTH);
        mIn.resetFrameCount();
      //  return new MjpegInputStream(in, MIN_ARRAY_LENGTH);
        recorder.start();
        calltimer();

        audioStatus = Micstatus.equals("1");
        startTime = 0;
        completedFrames = 0;
        audioCompleted = 0;

        isRecording = true;
        if (isJelliBean) {
            resetTextureLayout();
        }
        trial.setCanZoom(isRecording);
        setMenuEnabled();

        threadVideo = new VideoRecording();
        threadVideo.start();

        if (audioStatus) {
            threadAudio = new AudioRecordRunnables();
            threadAudio.start();
        }


    } catch (Exception e) {
        try {

            isRecording = false;
            trial.setCanZoom(isRecording);
            setMenuEnabled();

            Toast.makeText(getApplicationContext(), "Try again1", Toast.LENGTH_SHORT).show();
        } catch (Exception e1) {
        }
    }

}

    This is my ViedoRecording class

    private class VideoRecording extends Thread implements Runnable {

    public void run() {
        try {


            int i = -1;
            int cc = 0;
            int completed = 0;

            FileOutputStream out;
            RecordingHelper recordingHelper;
            try {
                Thread.sleep(VIDEO_FRAME_RATE < 6 ? 2000 : 300);
            } catch (Exception e) {

            }
            String file = getCacheDir() + "/temp.jpg";
            opencv_core.IplImage iplImage;
            runOnUiThread(videoTimeRunnable);

            while (isRecording || completed < mIn.totalFrames || true)             {
                try {
                    if (cc < 10) {
                        cc++;
                    }

                    if (i > (MIN_ARRAY_LENGTH - 2)) {
                        i = -1;
                    }
                    recordingHelper = mIn.datas[i + 1];


                    if (recordingHelper != null && recordingHelper.length > 1) {
                        i++;
                        completed++;
                        if (startTime == 0) {
                            startTime = System.currentTimeMillis();
                        }

                        completedFrames++;


                        out = new FileOutputStream(file);
                        out.write(recordingHelper.data);
                        out.flush();

                        out.close();

                        Log.e("recording", "=" + recordingHelper.rotaion);
                        iplImage = cvLoadImage(file, 1);

                        OpenCVFrameConverter.ToIplImage grabberConverter = new OpenCVFrameConverter.ToIplImage();
                        Frame frame = grabberConverter.convert(iplImage);
                        recorder.record(frame);
                        opencv_core.cvReleaseImage(iplImage);
                        mIn.datas[i] = null;
                        totalFramesRecordedByActivity++;
                        runOnUiThread(videoTimeRunnable);

                    } else if (!isRecording && startTime > 0) {
                        break;
                    } else if (cc > 5 && mIn.totalFrames < 1) {
                        break;
                    }

                } catch (Exception e) {

                }

            }

            new File(file).delete();
            endTime = System.currentTimeMillis();
            videoThreadFinished = true;

            finalizeRecording();


        } catch (Throwable t) {
            finishThis();

        }

    }
}

  • ffmpeg output does not contain any stream when concatenating mp4

    22 mars 2017, par Fahmida Joyti

    I am trying to concatenate mp4 files using ffmpeg and I used the following command to create 

    sudo ffmpeg -i slide-1.mp4 -c copy  -f mpegts intermediate1.ts

    and so on for multiple files it works fine but when I execute 

    sudo ffmpeg -i "concat:intermediate1.ts|intermediate2.ts" -c copy -bsf:a aac_adtstoasc output2.mp4

    I get the following message:

    Could not find codec parameters for stream 0 (Video: mpeg4 ([16][0][0][0] / 0x0010), yuv420p): unspecified size Consider increasing the value for the 'analyzeduration' and 'probesize' options

    and I get Output file #0 does not contain any stream error message I am not sure what I am doing wrong since I did specify the input in my command

  • Install ffmpeg on Centos6 x64 using FFmpegInstaller 8.0 Issue [on hold]

    21 mars 2017, par woshka

    I have the following issue while installing ffmpeginstaller8.0 on centos 6 x64 on the mplayer installtion it fails as followes on cpu.c what is the issue and how to solve it?

    Thanks

    EDIT: I have found the best solution to install ffmpeg and all of it's libraries with this link enter link description here

    YASM    libavcodec/x86/vp9lpf_16bpp.o
YASM    libavcodec/x86/vp9itxfm_16bpp.o
YASM    libavcodec/x86/vp9lpf.o
YASM    libavcodec/x86/hevc_mc.o
YASM    libavcodec/x86/vp9itxfm.o
AR      libavcodec/libavcodec.a
make[1]: Leaving directory `/usr/src/ffmpegscript/mplayer/ffmpeg'
make -C ffmpeg libavutil/libavutil.a
make[1]: Entering directory `/usr/src/ffmpegscript/mplayer/ffmpeg'
CC      libavutil/cpu.o
libavutil/cpu.c:20:23: warning: stdatomic.h: No such file or directory
libavutil/cpu.c:28:5: warning: "HAVE_SCHED_GETAFFINITY" is not defined
libavutil/cpu.c:34:5: warning: "HAVE_GETPROCESSAFFINITYMASK" is not defined
libavutil/cpu.c:34:36: warning: "HAVE_WINRT" is not defined
libavutil/cpu.c:37:5: warning: "HAVE_SYSCTL" is not defined
libavutil/cpu.c:48: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'cpu_flags'
libavutil/cpu.c: In function 'av_force_cpu_flags':
libavutil/cpu.c:86: error: implicit declaration of function 'atomic_store_explicit'
libavutil/cpu.c:86: error: 'cpu_flags' undeclared (first use in this function)
libavutil/cpu.c:86: error: (Each undeclared identifier is reported only once
libavutil/cpu.c:86: error: for each function it appears in.)
libavutil/cpu.c:86: error: 'memory_order_relaxed' undeclared (first use in this function)
libavutil/cpu.c: In function 'av_get_cpu_flags':
libavutil/cpu.c:91: error: implicit declaration of function 'atomic_load_explicit'
libavutil/cpu.c:91: error: 'cpu_flags' undeclared (first use in this function)
libavutil/cpu.c:91: error: 'memory_order_relaxed' undeclared (first use in this function)
libavutil/cpu.c: In function 'av_set_cpu_flags_mask':
libavutil/cpu.c:101: error: 'cpu_flags' undeclared (first use in this function)
libavutil/cpu.c:102: error: 'memory_order_relaxed' undeclared (first use in this function)
libavutil/cpu.c:265:5: warning: "HAVE_WINRT" is not defined
libavutil/cpu.c:268:5: warning: "HAVE_SCHED_GETAFFINITY" is not defined
libavutil/cpu.c:275:7: warning: "HAVE_GETPROCESSAFFINITYMASK" is not defined
libavutil/cpu.c:279:7: warning: "HAVE_SYSCTL" is not defined
libavutil/cpu.c:285:7: warning: "HAVE_SYSCONF" is not defined
libavutil/cpu.c:287:7: warning: "HAVE_SYSCONF" is not defined
libavutil/cpu.c:289:7: warning: "HAVE_WINRT" is not defined
make[1]: *** [libavutil/cpu.o] Error 1
make[1]: Leaving directory `/usr/src/ffmpegscript/mplayer/ffmpeg'
make: *** [ffmpeg/libavutil/libavutil.a] Error 2
cp: cannot create regular file `/usr/local/cpffmpeg/etc/mplayer/codecs.conf': No such file or directory
Installation of mplayer.tar.gz ....... Completed


   Mplayer installation Failed :( ,  please contact  professional support sales@syslint.com

  • Python + ffmpeg TypeError : not all arguments converted during string formatting

    21 mars 2017, par Sonic Motion

    I'm sending a file to a function in python, and trying to save the results to a variable, but I keep getting that error.

    I've looked over the other answers but nothing seems to fit. Any help is appreciated:

    def ffmpegLUFS(fileName):
    subprocess.Popen("ffmpeg -i %s -filter_complex ebur128 -f null - 2>&1 | grep -n '.*' | grep -A 5 'size' | grep 'I:' | cut -d ':' -f3-" % tuple(map(pipes.quote, sys.argv[1])),stdout=subprocess.PIPE,shell=True).communicate()[0]
    return

    Traceback (most recent call last):
  File "/Volumes/videos/videos/DROP_BIN/CHRIS/POD_Workflow_Files/WebContent_Audio.py", line 30, in 
    sourceLUFS = ffmpegLUFS(sys.argv[1])
  File "/Volumes/videos/videos/DROP_BIN/CHRIS/POD_Workflow_Files/WebContent_Audio.py", line 18, in ffmpegLUFS
    subprocess.Popen("ffmpeg -i %s -filter_complex ebur128 -f null - 2>&1 | grep -n '.*' | grep -A 5 'size' | grep 'I:' | cut -d ':' -f3-" % tuple(map(pipes.quote, fileName)),stdout=subprocess.PIPE,shell=True).communicate()[0]
TypeError: not all arguments converted during string formatting

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