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  • Combine 2 .FLV videos

    4 décembre 2015, par Rune

    For the last 4 hours I've been trying to combine 2 .flv files into one using ffmpeg (or well, just C# in general).

    Here's what I got so far: I've converted both the videos to .mp4 videos:

    "-i " + videoFileLocation + " -c copy -copyts " + newConvertedFileLocation

    I have then combined the two .mp4 files into a single one using: (txtPath is the text file with the two mp4 file locations)

    "-f concat -i " + txtPath + " -c copy " + saveLocation

    This ends up with an mp4 file which contains the combination of both the videos BUT with the following fault:

    The length of the first video is 0:05

    The length of the second video is 6:11

    However the length of the combined video is for some reason 07:51 - thus the video runs at a slower pace than it should.

    Furthermore the audio is async with the video.

    What am I doing wrong here?

    I haven't used ffmpeg before and I just wanna get this working.

    Any help is greatly appreciated!

    As requested here is the output from running 'ffmpeg -i input1.flv -i input2.flv':

    ffmpeg version 2.7 Copyright (c) 2000-2015 the FFmpeg developers   built with gcc 4.9.2 (GCC)...

Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'filepath\input1.flv':   Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.24.2   Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 384 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler Input #1, flv, from 'filepath\input2.flv':   Metadata:
    audiosize       : 4476626
    canSeekToEnd    : true
    datasize        : 23876671
    videosize       : 19004263
    hasAudio        : true
    hasCuePoints    : false
    hasKeyframes    : true
    hasMetadata     : true
    hasVideo        : true
    lasttimestamp   : 372
    metadatacreator : flvtool++ (Facebook, Motion project, dweatherford)
    totalframes     : 9298
    encoder         : Lavf56.36.100   Duration: 00:06:11.92, start: 0.080000, bitrate: 513 kb/s
    Stream #1:0: Video: h264 (High), yuv420p, 646x364 [SAR 1:1 DAR 323:182], 400 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
    Stream #1:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 96 kb/s At least one output file must be specified

  • FFmpeg4Android : How to select videos from gallery ?

    4 décembre 2015, par marian

    I have created an app using FFmpeg4Android library. I would like to add watermark into videos using ffmpeg. Command for adding watermark is working fine but the coding has pre-fixed video name in the command. I would like to choose videos from gallery folder and then add watermark to the videos. I do not know how to add intent for choosing videos with FFmpeg. I have tried to add the intent like this replacing the in.mp4 with PICK_FROM_GALLERY intent:

     private void runTranscodingUsingLoader() {
    Log.i(Prefs.TAG, "runTranscodingUsingLoader started...");

    PowerManager powerManager = (PowerManager)ProgressBarExample.this.getSystemService(Activity.POWER_SERVICE);
    WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK");
    Log.d(Prefs.TAG, "Acquire wake lock");
    wakeLock.acquire();

    Intent intent = new Intent();

    intent.setType("video/*");
    intent.setAction(Intent.ACTION_GET_CONTENT);

    startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_GALLERY);


    String[] complexCommand = {"ffmpeg","-y" ,"-i", String.valueOf(PICK_FROM_GALLERY),"-strict","experimental",
            "-vf", "movie=/sdcard/videokit/watermark.png [watermark];" +
            " [in][watermark] overlay=main_w-overlay_w-10:10 [out]","-s",
            "320x240","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab",
            "48000", "-ac", "2", "-ar", "22050", "/sdcard/videokit/out1.mp4"};

    It opens the gallery but the watermarking command doesnt get executed in the selected video. Can someone help me to resolve this issue. I could not find proper references/examples regarding this. My full coding is as follows.

    public class ProgressBarExample extends Activity  {

public ProgressDialog progressBar;

String workFolder = null;
String demoVideoFolder = null;
String demoVideoPath = null;
String vkLogPath = null;
LoadJNI vk;
private final int STOP_TRANSCODING_MSG = -1;
private final int FINISHED_TRANSCODING_MSG = 0;
private boolean commandValidationFailedFlag = false;
private static final int PICK_FROM_GALLERY = 1;

private void runTranscodingUsingLoader() {
    Log.i(Prefs.TAG, "runTranscodingUsingLoader started...");

    PowerManager powerManager = (PowerManager)ProgressBarExample.this.getSystemService(Activity.POWER_SERVICE);
    WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "VK_LOCK");
    Log.d(Prefs.TAG, "Acquire wake lock");
    wakeLock.acquire();




    String[] complexCommand = {"ffmpeg","-y" ,"-i", "/sdcard/videokit/in.mp4","-strict","experimental",
            "-vf", "movie=/sdcard/videokit/watermark.png [watermark];" +
            " [in][watermark] overlay=main_w-overlay_w-10:10 [out]","-s",
            "320x240","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab",
            "48000", "-ac", "2", "-ar", "22050", "/sdcard/videokit/out1.mp4"};
    ///////////////////////////////////////////////////////////////////////


    vk = new LoadJNI();
    try {
        // running complex command with validation
        vk.run(complexCommand, workFolder, getApplicationContext());

        // running without command validation
        //vk.run(complexCommand, workFolder, getApplicationContext(), false);

        // running regular command with validation
        //vk.run(GeneralUtils.utilConvertToComplex(commandStr), workFolder, getApplicationContext());

        Log.i(Prefs.TAG, "vk.run finished.");
        // copying vk.log (internal native log) to the videokit folder
        GeneralUtils.copyFileToFolder(vkLogPath, demoVideoFolder);

    } catch (CommandValidationException e) {
        Log.e(Prefs.TAG, "vk run exeption.", e);
        commandValidationFailedFlag = true;

    } catch (Throwable e) {
        Log.e(Prefs.TAG, "vk run exeption.", e);
    }
    finally {
        if (wakeLock.isHeld()) {
            wakeLock.release();
            Log.i(Prefs.TAG, "Wake lock released");
        }
        else{
            Log.i(Prefs.TAG, "Wake lock is already released, doing nothing");
        }
    }

    // finished Toast
    String rc = null;
    if (commandValidationFailedFlag) {
        rc = "Command Vaidation Failed";
    }
    else {
        rc = GeneralUtils.getReturnCodeFromLog(vkLogPath);
    }
    final String status = rc;
    ProgressBarExample.this.runOnUiThread(new Runnable() {
        public void run() {
            Toast.makeText(ProgressBarExample.this, status, Toast.LENGTH_LONG).show();
            if (status.equals("Transcoding Status: Failed")) {
                Toast.makeText(ProgressBarExample.this, "Check: " + vkLogPath + " for more information.", Toast.LENGTH_LONG).show();
            }
        }
    });
}


@Override
public void onCreate(Bundle savedInstanceState) {
    Log.i(Prefs.TAG, "onCreate ffmpeg4android ProgressBarExample");

    super.onCreate(savedInstanceState);
    setContentView(R.layout.ffmpeg_demo_client_2);

    demoVideoFolder = Environment.getExternalStorageDirectory().getAbsolutePath() + "/videokit/";
    demoVideoPath = demoVideoFolder + "in.mp4";

    Log.i(Prefs.TAG, getString(R.string.app_name) + " version: " + GeneralUtils.getVersionName(getApplicationContext()) );

    Button invoke =  (Button)findViewById(R.id.invokeButton);
    invoke.setOnClickListener(new OnClickListener() {
        public void onClick(View v){
            Log.i(Prefs.TAG, "run clicked.");
            runTranscoding();
        }
    });

    workFolder = getApplicationContext().getFilesDir() + "/";
    Log.i(Prefs.TAG, "workFolder (license and logs location) path: " + workFolder);
    vkLogPath = workFolder + "vk.log";
    Log.i(Prefs.TAG, "vk log (native log) path: " + vkLogPath);
    GeneralUtils.copyLicenseFromAssetsToSDIfNeeded(this, workFolder);
    GeneralUtils.copyDemoVideoFromAssetsToSDIfNeeded(this, demoVideoFolder);
    int rc = GeneralUtils.isLicenseValid(getApplicationContext(), workFolder);
    Log.i(Prefs.TAG, "License check RC: " + rc);
}



private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        Log.i(Prefs.TAG, "Handler got message");
        if (progressBar != null) {
            progressBar.dismiss();

            // stopping the transcoding native
            if (msg.what == STOP_TRANSCODING_MSG) {
                Log.i(Prefs.TAG, "Got cancel message, calling fexit");
                vk.fExit(getApplicationContext());


            }
        }
    }
};

public void runTranscoding() {
    progressBar = new ProgressDialog(ProgressBarExample.this);
    progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    progressBar.setTitle("FFmpeg4Android Direct JNI");
    progressBar.setMessage("Press the cancel button to end the operation");
    progressBar.setMax(100);
    progressBar.setProgress(0);

    progressBar.setCancelable(false);
    progressBar.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            handler.sendEmptyMessage(STOP_TRANSCODING_MSG);
        }
    });

    progressBar.show();

    new Thread() {
        public void run() {
            Log.d(Prefs.TAG,"Worker started");
            try {
                //sleep(5000);
                runTranscodingUsingLoader();
                handler.sendEmptyMessage(FINISHED_TRANSCODING_MSG);

            } catch(Exception e) {
                Log.e("threadmessage",e.getMessage());
            }
        }
    }.start();

    // Progress update thread
    new Thread() {
        ProgressCalculator pc = new ProgressCalculator(vkLogPath);
        public void run() {
            Log.d(Prefs.TAG,"Progress update started");
            int progress = -1;
            try {
                while (true) {
                    sleep(300);
                    progress = pc.calcProgress();
                    if (progress != 0 && progress < 100) {
                        progressBar.setProgress(progress);
                    }
                    else if (progress == 100) {
                        Log.i(Prefs.TAG, "==== progress is 100, exiting Progress update thread");
                        pc.initCalcParamsForNextInter();
                        break;
                    }
                }

            } catch(Exception e) {
                Log.e("threadmessage",e.getMessage());
            }
        }
    }.start();
}

}

    Any help/guidance would be really helpful. Thank you.

  • FFmpeg : Error occurred while encoding audio stream from ac3 to aac

    4 décembre 2015, par akki_2891

    I am using following command to encode my video to h264 and aac audio codec :

    ffmpeg -i sample.mp4 -codec:v libx264 -profile:v high -level:v 4.0 -codec:a libvo_aacenc -b:a 128k output_file.mp4

    Following is a trace of the error i am getting at the console.

    Input #0, mpegts, from 'sample.mp4':
  Duration: 00:00:58.08, start: 1.000033, bitrate: 17290 kb/s
  Program 1
    Stream #0:0[0x1011]: Video: h264 (High) (HDMV / 0x564D4448), yuv420p, 1920x1
080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
    Stream #0:1[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fl
tp, 448 kb/s
    Stream #0:2[0x1200]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
[libx264 @ 003dc660] using SAR=1/1
[libx264 @ 003dc660] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
[libx264 @ 003dc660] profile High, level 4.0
[libx264 @ 003dc660] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Cop
yright 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 de
block=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1
me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chr
oma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1
 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=
1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scen
ecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmi
n=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[libvo_aacenc @ 03c3c640] Unable to set encoding parameters
Output #0, mp4, to 'output_file.mp4':
    Stream #0:0: Video: h264, yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 90
k tbn, 29.97 tbc
    Stream #0:1: Audio: aac, 48000 Hz, 5.1(side), s16, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
  Stream #0:1 -> #0:1 (ac3 -> libvo_aacenc)
Error while opening encoder for output stream #0:1 - maybe incorrect parameters
such as bit_rate, rate, width or height

    I am really not able to find what possibly could be wrong. I dont want to copy audio codec , i wish to encode it from ac3 to aac

    Also any suggestion to make it lossless

  • ffmpeg Error while opening enconder for output stream [duplicate]

    4 décembre 2015, par user650922

    This question already has an answer here:

    As a testing purpose I am converting .mp4 video to .mp4.

    The error message is "Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height".

    Could someone please help me in finding the reason behind below error.

    Below is my terminal log.

    C:\Users\work\Downloads\ffmpeg-20151130-git-7b11eea-win64-static\ffmpeg-20151130
-git-7b11eea-win64-static\bin
>ffmpeg -i C:\Users\work\Desktop\Esocializ\Sample.mp4 C:\Users\work\Desktop\Esoc
ializ\Sample1.mp4
ffmpeg version N-76957-g7b11eea Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 5.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --en
able-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --ena
ble-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc
 --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enabl
e-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --
enable-lzma --enable-decklink --enable-zlib
  libavutil      55.  9.100 / 55.  9.100
  libavcodec     57. 16.101 / 57. 16.101
  libavformat    57. 19.100 / 57. 19.100
  libavdevice    57.  0.100 / 57.  0.100
  libavfilter     6. 17.100 /  6. 17.100
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\work\Desktop\Esocializ\Sample.
mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.24.2
  Duration: 00:00:05.31, start: 0.000000, bitrate: 1589 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720
[SAR 1:1 DAR 16:9], 1205 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp,
384 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
[libx264 @ 000000c07583dde0] using SAR=1/1
[libx264 @ 000000c07583dde0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 000000c07583dde0] profile High, level 3.1
[libx264 @ 000000c07583dde0] 264 - core 148 r2638 7599210 - H.264/MPEG-4 AVC cod
ec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 r
ef=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed
_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pski
p=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 dec
imate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b
_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=
25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.
60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
[libvo_aacenc @ 000000c0758d6da0] Unable to set encoding parameters
Output #0, mp4, to 'C:\Users\work\Desktop\Esocializ\Sample1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf53.24.2
    Stream #0:0(und): Video: h264 (libx264), yuv420p, 1280x720 [SAR 1:1 DAR 16:9
], q=-1--1, 25 fps, 25 tbn, 25 tbc (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
      encoder         : Lavc57.16.101 libx264
    Stream #0:1(und): Audio: aac, 0 channels, 128 kb/s (default)
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
      encoder         : Lavc57.16.101 libvo_aacenc
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
Error while opening encoder for output stream #0:1 - maybe incorrect parameters
such as bit_rate, rate, width or height

C:\Users\work\Downloads\ffmpeg-20151130-git-7b11eea-win64-static\ffmpeg-20151130
-git-7b11eea-win64-static\bin
>

  • FFMPEG Video Multiplexer

    4 décembre 2015, par Nader

    I am a DirectShow developer, I used to build multiplexers that take 2 video inputs and generate one output, I would then use a video encoder mux to feed it the output + anothrr audio stream to generate the final video output. The multiplexer (DirectShow framework) allows me to process the input video from two sources (for example, adding effects using the two frames). Does anyone know how this can be done using FFMPEG, or at least point me to the right resources? Thanks

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