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  • Draw (Free Hand) a particle animation on Extracted images From Video

    31 août 2017, par Vinesh Chauhan

    I am looking for a solution for how can I draw a particle on touch position on images which I have already extracted from a video to save it back as video.

    Flow of my application

    1. Extract images from the video
    2. Draw on each image like we are drawing on a video
    3. Save that drawn particle as an image
    4. Merge that image as video using ffmpeg

    I have got a solution about ffmpeg for this problem, but I am not sure how to do that, so can anyone help me?

  • FFMPEG filter is not implementing

    31 août 2017, par Alok Kumar Verma

    I'm using FFMPEG for applying and saving the file to the specified path. Since I'm new to FFMPEG so I've followed this link to import the FFMPEG libraries inside my project.

    FFMPEG libraries are working fine inside my project. Now I've followed FFMPEG Commands link for applying filters using commands. For now i'm using vintage filter command to check whether it is working or not

    I've followed FFMPEG Project in Android link to apply the filters and save it to my storage path.

    I'm using a file from my storage path to apply filter for the same and saving them inside the specified path. The problem is that the command is implementing(doubtful) but no file is getting saved with the filters, nor I get any exception or any error in my logcat. I"m very doubtful whether what is being left to get the desired result.

    This is my code where I'm using the FFMPEG for applying filters and saving them in the specified path.

    FilterAcitivity.java

    public class FilterActivity extends AppCompatActivity {

private ArrayList videoReceiveddata = null;

private EPlayerView ePlayerView;

private StringBuilder stringBuilder;

private DataSource.Factory dataSourceFactory;
private ExtractorsFactory extractorsFactory;

private Button play,stop,noneFilter,faded,noir,instant;

private FFmpeg fFmpeg;

private int choice = 0;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_filter);

    Bundle videoExtras = getIntent().getExtras();

    videoReceiveddata = videoExtras.getStringArrayList("sendData");
    Log.e("RECEIVED_VIDEO====", videoReceiveddata.toString());

    stringBuilder = new StringBuilder();
    for(String path : videoReceiveddata){
        stringBuilder.append(path);
    }

    //laoding the ffmpeg binary files
    loadFFMEPGBinary();


    BandwidthMeter bandwidthMeter = new DefaultBandwidthMeter();
    TrackSelection.Factory videoTrackSelectionFactory =
            new AdaptiveTrackSelection.Factory(bandwidthMeter);
    TrackSelector trackSelector =
            new DefaultTrackSelector(videoTrackSelectionFactory);
    // Measures bandwidth during playback. Can be null if not required.
    DefaultBandwidthMeter defaultBandwidthMeter = new DefaultBandwidthMeter();
    // Produces DataSource instances through which media data is loaded.
    dataSourceFactory = new DefaultDataSourceFactory(getApplicationContext(),
            Util.getUserAgent(getApplicationContext(), "TestApp"), defaultBandwidthMeter);
    // Produces Extractor instances for parsing the media data.
    extractorsFactory = new DefaultExtractorsFactory();
    // This is the MediaSource representing the media to be played.
    MediaSource videoSource = new ExtractorMediaSource(Uri.parse(stringBuilder.toString()),
            dataSourceFactory, extractorsFactory, null, null);


    // 2. Create the player
    final SimpleExoPlayer player =
            ExoPlayerFactory.newSimpleInstance(getApplicationContext(), trackSelector);
    player.prepare(videoSource);

    ePlayerView = (EPlayerView) findViewById(R.id.ePlayer);
    ePlayerView.setSimpleExoPlayer(player);
    ePlayerView.onResume();



    play = (Button) findViewById(R.id.playButton);
    stop = (Button) findViewById(R.id.stopButton);
    faded = (Button) findViewById(R.id.fadedFilter);
    noneFilter = (Button) findViewById(R.id.noFilter);
    noir = (Button) findViewById(R.id.noirFilter);
    instant = (Button) findViewById(R.id.instantFilter);

    play.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            MediaSource videoSource = new ExtractorMediaSource(Uri.parse(stringBuilder.toString()),
                    dataSourceFactory, extractorsFactory, null, null);
            player.prepare(videoSource);
            player.setPlayWhenReady(true);
        }
    });

    stop.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            player.stop();
        }
    });

    noneFilter.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            choice = 1;
            ePlayerView.setGlFilter(new GlFilter());
        }
    });

    faded.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            choice = 2;
            ePlayerView.setGlFilter(new GlSepiaFilter());
            Log.e("Filter Applied",ePlayerView.toString());
            Log.e("Filter Applied====",stringBuilder.toString());

        }
    });
}

//loading binary of ffmpeg
private void loadFFMEPGBinary() {
    try {
        if (fFmpeg == null) {
            Log.e("TEST=====", "ffmpeg : null");
            fFmpeg = FFmpeg.getInstance(this);
        }

        fFmpeg.loadBinary(new LoadBinaryResponseHandler() {
            @Override
            public void onFailure() {
                showUnsupportedExceptionDialog();
            }

            @Override
            public void onSuccess() {
                Log.d("TESTAPP====", "ffmpef : coorect loaded");
            }
        });
    } catch (FFmpegNotSupportedException e) {
        showUnsupportedExceptionDialog();
    } catch (Exception e) {
        Log.d("TESTAPP=====", "Exception not supported" + e);
    }
}

private void showUnsupportedExceptionDialog() {
    new AlertDialog.Builder(FilterActivity.this)
            .setIcon(android.R.drawable.ic_dialog_alert)
            .setTitle("Not Supported")
            .setMessage("Device Not Supported")
            .setCancelable(false)
            .setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    FilterActivity.this.finish();
                }
            })
            .create()
            .show();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater menuInflater = getMenuInflater();
    menuInflater.inflate(R.menu.filter_menu,menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    switch (item.getItemId()) {
        case R.id.save:
            if(choice == 1){
                addThatFilter();
            }else if(choice == 2){
                Toast.makeText(getApplicationContext(),"No filter",
                        Toast.LENGTH_SHORT).show();
            }
        default:
            return super.onOptionsItemSelected(item);
    }
}

private void addThatFilter() {

    String savingPath = Environment.getExternalStorageDirectory().getAbsolutePath().toString()
            + "/FilterVideo.mp4";

    String complexCommand = "ffmpeg -y -i"+ stringBuilder.toString() +"-strict experimental -vf " +
            "curves=vintage -s 640x480 -r 30 -aspect 4:3 -ab 48000 -ac 2 -ar 22050 -b 2097k -vcodec " +
            savingPath;

    execFFMPEGBinary(complexCommand);
}

private void execFFMPEGBinary( final String complexCommand) {

    try{

        fFmpeg.execute(new String[]{complexCommand}, new ExecuteBinaryResponseHandler(){

            @Override
            public void onFailure(String message) {
                Log.e("Failed with output", message);
            }

            @Override
            public void onSuccess(String message) {
                Toast.makeText(getApplicationContext(),"Success!",Toast.LENGTH_SHORT)
                        .show();
            }
        });
    }catch (FFmpegCommandAlreadyRunningException e){
        //do nothing
    }
} }

  • Different results for exit conditions in process call

    31 août 2017, par Martin KS

    As a small part of a project, I'm calling ffmpeg to convert a video - I worked from an old example that used some of the output to create a progress bar, which was hanging. Code below:

    [initiation code common to both examples]
    Dim inputFile, outputFile As String, myProcess As New Process
    Dim psiProcInfo As New ProcessStartInfo, ffreader As StreamReader


    inputFile = "C:\Users\mklefass\Downloads\Video 2017-08-16 21.01.39.mov"
    outputFile = "C:\Users\mklefass\Downloads\tmp2\Output"

    psiProcInfo.FileName = Application.StartupPath + "\ffmpeg.exe"  'Location Of FFMPEG.EXE
    psiProcInfo.Arguments = " -i " & Chr(34) & inputFile & Chr(34) & " -vf fps=5 " & Chr(34) & outputFile & "%d.jpg" & Chr(34)                              'start ffmpeg with command strFFCMD string
    psiProcInfo.UseShellExecute = False                             'use the shell execute command we always want no
    psiProcInfo.WindowStyle = ProcessWindowStyle.Hidden             'hide the ffmpeg process window
    psiProcInfo.RedirectStandardError = True                        'Redirect the error out so we can read it
    psiProcInfo.RedirectStandardOutput = True                       'Redirect the standard out so we can read it
    psiProcInfo.CreateNoWindow = True

[bit that changes]
myProcess.Start()
ffreader = myProcess.StandardError
Do
    Try
        If Not myProcess.HasExited Then
            'Debug.WriteLine(ffreader.ReadLine)
        End If
    Catch
        If Not myProcess.HasExited Then
            MsgBox("Something went wrong")
        End If
    End Try
Loop Until myProcess.HasExited
MsgBox("done")

    I then found another example that just called the executable and then continued when it was done - as below:

    [same initialisation]
Debug.WriteLine("Starting...")
myProcess.Start()
strOutput = myProcess.StandardError.ReadToEnd
myProcess.WaitForExit()
myProcess.Close()

Debug.Write(strOutput)
MsgBox("done")

    The second approach worked perfectly... What's different about the "exit state" that Process.HasExited and Process.WaitForExit look for?

  • Is there a way to speed up the FFmpeg command '-filter_complex' ?

    31 août 2017, par Emma

    When using ffmpeg to re-encode videos, this is pretty fast. But when using the -filter_complex command the process slows down to real time. Is this process bound to the CPU or GPU? Does anyone know if there is any way to speed this up using the GPU?

    The full call is the following:

    ffmpeg.exe
-i video_0_0.mp4 -i video_0_1.mp4 -i video_0_2.mp4 -i video_0_3.mp4 
-filter_complex 
    "color=c=black:size=1920x1080 [base]; 
    [0:v] setpts=PTS-STARTPTS, scale=960x540 [upperleft]; 
    [1:v] setpts=PTS-STARTPTS, scale=960x540 [upperright]; 
    [2:v] setpts=PTS-STARTPTS, scale=960x540 [lowerleft]; 
    [3:v] setpts=PTS-STARTPTS, scale=960x540 [lowerright]; 
    [base][upperleft] overlay=shortest=1 [tmp1]; 
    [tmp1][upperright] overlay=shortest=1:x=960 [tmp2]; 
    [tmp2][lowerleft] overlay=shortest=1:y=540 [tmp3]; 
    [tmp3][lowerright] overlay=shortest=1:x=960:y=540" 
-q 4 -y
"test.mp4"

    output of the command:

    ffmpeg.exe -i video_0_0.mp4 -i video_0_1.mp4 -i video_0_2.mp4 -i video_0_3.mp4 -filter_complex "color=c=black:size=1920x1080 [base]; [0:v] setpts=PTS-STARTPTS, scale=960x540 [upperleft]; [1:v] setpts=PTS-STARTPTS, scale=960x540 [upperright]; [2:v] setpts=PTS-STARTPTS, scale=960x540 [lowerleft]; [3:v] setpts=PTS-STARTPTS, scale=960x540 [lowerright]; [base][upperleft] overlay=shortest=1 [tmp1]; [tmp1][upperright] overlay=shortest=1:x=960 [tmp2]; [tmp2][lowerleft] overlay=shortest=1:y=540 [tmp3]; [tmp3][lowerright] overlay=shortest=1:x=960:y=540" -q 4 -y "test.mp4"
ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 6.3.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  libavutil      55. 34.101 / 55. 34.101
  libavcodec     57. 64.101 / 57. 64.101
  libavformat    57. 56.101 / 57. 56.101
  libavdevice    57.  1.100 / 57.  1.100
  libavfilter     6. 65.100 /  6. 65.100
  libswscale      4.  2.100 /  4.  2.100
  libswresample   2.  3.100 /  2.  3.100
  libpostproc    54.  1.100 / 54.  1.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video_0_0.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.3.100
  Duration: 00:00:05.80, start: 0.000000, bitrate: 14 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc), 1280x720 [SAR 1:1 DAR 16:9], 12 kb/s, 10 fps, 10 tbr, 10240 tbn, 20 tbc (default)
    Metadata:
      handler_name    : VideoHandler
[h264 @ 000000000275a300] left block unavailable for requested intra mode
[h264 @ 000000000275a300] error while decoding MB 0 21, bytestream 927
[h264 @ 000000000275a300] concealing 1969 DC, 1969 AC, 1969 MV errors in I frame
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'video_0_1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : Session streamed with GStreamer
    encoder         : Lavf57.3.100
    comment         : rtsp-server
  Duration: 00:00:09.76, start: 0.000000, bitrate: 106 kb/s
    Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1280x720 [SAR 1:1 DAR 16:9], 104 kb/s, 24.90 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
[h264 @ 0000000002a2fb40] error while decoding MB 73 20, bytestream -7
[h264 @ 0000000002a2fb40] concealing 1976 DC, 1976 AC, 1976 MV errors in I frame
Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'video_0_2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : Session streamed with GStreamer
    encoder         : Lavf57.3.100
    comment         : rtsp-server
  Duration: 00:00:09.76, start: 0.000000, bitrate: 83 kb/s
    Stream #2:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1280x720 [SAR 1:1 DAR 16:9], 81 kb/s, 25.21 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
[h264 @ 0000000002779920] error while decoding MB 22 29, bytestream -7
[h264 @ 0000000002779920] concealing 1307 DC, 1307 AC, 1307 MV errors in I frame
Input #3, mov,mp4,m4a,3gp,3g2,mj2, from 'video_0_3.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : Session streamed with GStreamer
    encoder         : Lavf57.3.100
    comment         : rtsp-server
  Duration: 00:00:09.40, start: 0.000000, bitrate: 44 kb/s
    Stream #3:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1280x720 [SAR 1:1 DAR 16:9], 41 kb/s, 25.21 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
[swscaler @ 000000000295a5e0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 00000000029a64c0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 00000000029d89c0] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0000000002a7a160] deprecated pixel format used, make sure you did set range correctly
[libx264 @ 0000000002a42080] -qscale is ignored, -crf is recommended.
[libx264 @ 0000000002a42080] using SAR=1/1
[libx264 @ 0000000002a42080] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0000000002a42080] profile High, level 4.0
[libx264 @ 0000000002a42080] 264 - core 148 r2762 90a61ec - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options: cabac=1 ref=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_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 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 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
Output #0, mp4, to 'test.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.56.101
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    Metadata:
      encoder         : Lavc57.64.101 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
Stream mapping:
  Stream #0:0 (h264) -> setpts
  Stream #1:0 (h264) -> setpts
  Stream #2:0 (h264) -> setpts
  Stream #3:0 (h264) -> setpts
  overlay -> Stream #0:0 (libx264)
Press [q] to stop, [?] for help
[h264 @ 0000000002b12980] left block unavailable for requested intra mode
[h264 @ 0000000002b12980] error while decoding MB 0 21, bytestream 927
[h264 @ 0000000002b12980] concealing 1969 DC, 1969 AC, 1969 MV errors in I frame
[h264 @ 0000000002b14b40] error while decoding MB 73 20, bytestream -7
[h264 @ 0000000002b14b40] concealing 1976 DC, 1976 AC, 1976 MV errors in I frame
[h264 @ 00000000029195e0] error while decoding MB 22 29, bytestream -7
[h264 @ 00000000029195e0] concealing 1307 DC, 1307 AC, 1307 MV errors in I frame
[h264 @ 0000000002b15000] left block unavailable for requested intra4x4 mode -1 0x
[h264 @ 0000000002b15000] error while decoding MB 0 18, bytestream 293
[h264 @ 0000000002b15000] concealing 2209 DC, 2209 AC, 2209 MV errors in I frame
[h264 @ 0000000002b13800] left block unavailable for requested intra modeeed=   0x
[h264 @ 0000000002b13800] error while decoding MB 0 10, bytestream 1778
[h264 @ 0000000002b13800] concealing 2849 DC, 2849 AC, 2849 MV errors in I frame
[h264 @ 000000000291c600] left block unavailable for requested intra modeeed=   0x
[h264 @ 000000000291c600] error while decoding MB 0 32, bytestream 597
[h264 @ 000000000291c600] concealing 1089 DC, 1089 AC, 1089 MV errors in I frame
[h264 @ 0000000002b12e60] error while decoding MB 9 13, bytestream -5807.7kbits/s speed=0.0985x
[h264 @ 0000000002b12e60] concealing 2600 DC, 2600 AC, 2600 MV errors in I frame
[h264 @ 0000000002b12980] left block unavailable for requested intra4x4 mode -1/s speed=0.46x
[h264 @ 0000000002b12980] error while decoding MB 0 3, bytestream 1575
[h264 @ 0000000002b12980] concealing 3409 DC, 3409 AC, 3409 MV errors in I frame
[h264 @ 0000000002b159a0] left block unavailable for requested intra mode
[h264 @ 0000000002b159a0] error while decoding MB 0 14, bytestream 213
[h264 @ 0000000002b159a0] concealing 2529 DC, 2529 AC, 2529 MV errors in I frame
[h264 @ 0000000002918c40] error while decoding MB 63 30, bytestream -761.8kbits/s speed=0.642x
[h264 @ 0000000002918c40] concealing 1186 DC, 1186 AC, 1186 MV errors in I frame
[h264 @ 0000000002b14660] error while decoding MB 58 33, bytestream 222
[h264 @ 0000000002b14660] concealing 951 DC, 951 AC, 951 MV errors in I frame
[h264 @ 0000000002b15e80] left block unavailable for requested intra4x4 mode -1
[h264 @ 0000000002b15e80] error while decoding MB 0 30, bytestream 863
[h264 @ 0000000002b15e80] concealing 1249 DC, 1249 AC, 1249 MV errors in I frame
frame=  143 fps= 25 q=-1.0 Lsize=     200kB time=00:00:05.60 bitrate= 293.2kbits/s speed=0.994x
video:198kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.268034%
[libx264 @ 0000000002a42080] frame I:1     Avg QP:14.64  size: 31429
[libx264 @ 0000000002a42080] frame P:36    Avg QP:16.42  size:  3690
[libx264 @ 0000000002a42080] frame B:106   Avg QP:18.41  size:   356
[libx264 @ 0000000002a42080] consecutive B-frames:  0.7%  1.4%  0.0% 97.9%
[libx264 @ 0000000002a42080] mb I  I16..4: 33.7% 58.7%  7.6%
[libx264 @ 0000000002a42080] mb P  I16..4:  0.4%  1.0%  0.2%  P16..4:  6.0%  2.2%  1.5%  0.0%  0.0%    skip:88.7%
[libx264 @ 0000000002a42080] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  4.3%  0.0%  0.0%  direct: 0.0%  skip:95.7%  L0:34.4% L1:65.5% BI: 0.1%
[libx264 @ 0000000002a42080] 8x8 transform intra:59.7% inter:83.8%
[libx264 @ 0000000002a42080] coded y,uvDC,uvAC intra: 34.4% 17.3% 7.8% inter: 0.6% 0.6% 0.0%
[libx264 @ 0000000002a42080] i16 v,h,dc,p: 71% 17%  3% 10%
[libx264 @ 0000000002a42080] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 47% 22% 15%  2%  3%  3%  3%  2%  2%
[libx264 @ 0000000002a42080] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 47% 27% 11%  2%  4%  4%  3%  2%  1%
[libx264 @ 0000000002a42080] i8c dc,h,v,p: 60% 24% 15%  1%
[libx264 @ 0000000002a42080] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0000000002a42080] ref P L0: 84.6%  2.6% 10.6%  2.2%
[libx264 @ 0000000002a42080] ref B L0: 58.1% 41.5%  0.5%
[libx264 @ 0000000002a42080] ref B L1: 95.8%  4.2%
[libx264 @ 0000000002a42080] kb/s:282.50

  • Change FPS in generate preview

    31 août 2017, par Pe Ťo

    Hi, I found very simple and working scipt but I cant change "speed" / duration of preview. It is set to 1 frame per second but I want it more speedier for example 0,6 sec/per frame. It is possible ? Thanx a lot.

    REM ----------------------------------------------
set folder=C:\My videos
set vframes=10
set width=384
set height=216
    rem w = h*16/9
set filetypes=*.mp4
REM ----------------------------------------------
setlocal EnableDelayedExpansion

pushd "%folder%"
if not exist preview md preview
for /f "usebackq delims=" %%f in (`dir /b %filetypes%`) do (
    if not exist "preview\%%~nf.mp4" (  
        for /f %%i in ('ffprobe -v error -show_entries format^=duration "%%f" -of default^=noprint_wrappers^=1:nokey^=1') do set length=%%i
        set /a length=!length!+0
        set /a fps=!length!/%vframes%
        ffmpeg -threads 2 -i "%%f" -an -qscale:v 1 -vf "fps=1/!fps!, scale=iw*min(%width%/iw\,%height%/ih):ih*min(%width%/iw\,%height%/ih):flags=lanczos, pad=%width%:%height%:(%width%-iw*min(%width%/iw\,%height%/ih))/2:(%height%-ih*min(%width%/iw\,%height%/ih))/2, unsharp=5:5:0.5:5:5:0.5" -vframes %vframes% -f image2pipe -vcodec ppm - ^
        | ffmpeg -y -threads 2 -framerate 1 -i pipe:0 -c:v libx264 -profile:v baseline -level 3.0 -tune stillimage -r 30 -pix_fmt yuv420p "preview\%%~nf.mp4"
    )
cls
)

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