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• Remove Unnecesary Maven Dependencies from Eclipse

  18 mai 2021, par ur3k

  I am working with Spring-Boot 2.3.8 and Eclipse.

  


  I am using these dependencies to work on some videos :

  


      &#xA;    <dependency>&#xA;        <groupid>org.bytedeco</groupid>&#xA;        <artifactid>javacv</artifactid>&#xA;        <version>1.5.4</version>&#xA;    </dependency>&#xA;&#xA;    &#xA;    <dependency>&#xA;        <groupid>org.bytedeco</groupid>&#xA;        <artifactid>opencv-platform</artifactid>&#xA;        <version>4.4.0-1.5.4</version>&#xA;    </dependency>&#xA;&#xA;    &#xA;    <dependency>&#xA;        <groupid>org.bytedeco</groupid>&#xA;        <artifactid>ffmpeg-platform</artifactid>&#xA;        <version>4.3.1-1.5.4</version>&#xA;    </dependency>&#xA;    &#xA;

  


  Eclipse is adding all JARs of opencv, javaccp and ffmpeg, including JARs for Androind, MacOs, etc. I just need the ones for Windows and the problem is that these extra dependencies are creating problems for my teams when they try to load the project, build or test it (it is extreamly slow or just doesnt work).

  


  These dependencies are not present in my final WAR when I build with maven form the command line and I use :

  


  mvn -Djavacpp.platform=windows-x86_64 clean install 


  


  Is there a way to tell eclipse to do the same ?

  


  The WAR size goes from 800 MB to around 200 MB when building without and with and the platform flag, these extra 600 MB are what in my opinion is too much for eclipse.

  


  Here is an image of all the JARs being added to the project.

  


  

  


• I am using a dragable and resizable selector which is shown on top of my video. I need to get it x and y coordinates according to the video resolution

  11 août 2023, par Himanshu

  I am using @use-gesture/react @react-spring/web to create a draggable and resizable selector over the video. I am also able to get the x and y coordinates of the selector with respect to the video element but since I am giving my video tag height and width so that the video fits my screen the X and Y coordinates I am getting are not in the exact same position in the full resolution video. I need to pass the x and y coordinates to ffmpeg to blur the specific portion of the video.

  


• Decode a proprietary H264 network video stream

  10 mars 2023, par al_mukthar

  I have incoming byte streams probably encoded in H264 from a RTSP camera through a websocket in my spring boot application,

  


  I need to decode the incoming H264 streams to transmit the video to my frontend clients.
I have tried using javaCV/FFMpeg but nothing works.

  


  Any help would be appreciated

  


  this is the part of hex dump received through socket

  


  00000000: 01 00 00 00 04 48 32 36 34 00 00 00 24 38 65 34    .....H264...$8e4
00000010: 32 39 65 37 61 2D 32 66 34 66 2D 34 37 31 61 2D    29e7a-2f4f-471a-
00000020: 39 61 63 30 2D 66 66 62 38 64 64 37 63 37 64 37    9ac0-ffb8dd7c7d7
00000030: 32 00 00 00 D4 7B 22 49 73 49 6E 69 74 22 3A 66    2...T{"IsInit":f
00000040: 61 6C 73 65 2C 22 49 73 41 75 64 69 6F 22 3A 66    alse,"IsAudio":f
00000050: 61 6C 73 65 2C 22 54 6F 74 61 6C 53 65 63 6F 6E    alse,"TotalSecon
00000060: 64 73 22 3A 30 2E 30 36 2C 22 46 72 61 6D 65 54    ds":0.06,"FrameT
00000070: 69 6D 65 22 3A 22 32 30 32 33 2D 30 32 2D 32 33    ime":"2023-02-23
00000080: 54 30 34 3A 32 31 3A 35 33 2E 35 33 31 5A 22 2C    T04:21:53.531Z",
00000090: 22 53 65 71 75 65 6E 63 65 49 64 22 3A 31 2C 22    "SequenceId":1,"
000000a0: 42 61 73 65 44 65 63 6F 64 65 54 69 6D 65 22 3A    BaseDecodeTime":
000000b0: 32 36 35 38 37 2C 22 4D 65 64 69 61 54 69 6D 65    26587,"MediaTime
000000c0: 22 3A 32 36 35 38 37 2C 22 49 73 46 72 61 6D 65    ":26587,"IsFrame
000000d0: 48 69 64 64 65 6E 22 3A 66 61 6C 73 65 2C 22 49    Hidden":false,"I
000000e0: 73 4B 65 79 46 72 61 6D 65 22 3A 66 61 6C 73 65    sKeyFrame":false
000000f0: 2C 22 49 64 22 3A 34 34 35 2C 22 47 65 6E 65 72    ,"Id":445,"Gener
00000100: 61 74 69 6F 6E 22 3A 31 7D 00 00 3F 50 00 00 00    ation":1}..?P...
00000110: 68 6D 6F 6F 66 00 00 00 10 6D 66 68 64 00 00 00    hmoof....mfhd...
00000120: 00 00 00 01 BD 00 00 00 50 74 72 61 66 00 00 00    ....=...Ptraf...
00000130: 10 74 66 68 64 00 02 00 00 00 00 00 01 00 00 00    .tfhd...........
00000140: 14 74 66 64 74 01 00 00 00 00 00 00 00 00 00 67    .tfdt..........g
00000150: DB 00 00 00 24 74 72 75 6E 01 00 0F 01 00 00 00    [...$trun.......
00000160: 01 00 00 00 70 00 00 00 3C 00 00 3E E0 00 01 00    ....p...<..>`...
00000170: 00 00 00 00 00 00 00 3E E8 6D 64 61 74 00 00 3E    .......>hmdat..>
00000180: DC 41 E1 81 80 93 BE 16 2B 33 77 3D 4C B6 55 8B    \Aa...>.+3w=L6U.
00000190: D2 55 60 92 05 F7 F7 A4 97 54 4B 6C A6 68 48 84    RU`..ww$.TKl&hH.
000001a0: 68 FF D2 B6 6C 02 31 FC 24 01 78 EA BD 20 AD 15    h.R6l.1|$.xj=.-.
000001b0: F1 73 31 4B EB EF 18 1B 50 B3 13 F2 DC C6 4C E1    qs1Kko..P3.r\FLa
000001c0: 75 8B 94 52 6B C5 09 37 55 1E 45 66 6A 92 39 23    u..RkE.7U.Efj.9#
000001d0: C9 2D FD BB EC AD FD CF C4 30 75 FF 44 66 FA 85    I-};l-}OD0u.Dfz.
000001e0: D9 7C 18 72 AE 63 45 60 DD D7 65 44 84 49 95 8D    Y|.r.cE`]WeD.I..
000001f0: 2C 70 6C 57 8E E9 A9 EB B6 F6 78 BD D6 88 99 F6    ,plW.i)k6vx=V..v
00000200: FC 25 B1 0A FF DF CB 77 6A 67 37 24 A5 3D 8F A1    |%1.._Kwjg7$%=.!
00000210: 27 9B 4F 42 0E CD B8 87 6E C9 99 FC 6F 4C 53 4B    '.OB.M8.nI.|oLSK
00000220: 01 EA B6 AF 99 F8 22 C1 8F 1E C1 66 D6 8A 09 D6    .j6/.x"A..AfV..V
00000230: 99 79 91 F7 C1 2A 08 1F 81 CB 5E DD C3 CA 86 8F    .y.wA*...K^]CJ..
00000240: 57 BF 17 A2 64 6B 69 56 AE 19 1F 57 AD A6 D8 C2    W?."dkiV...W-&XB
00000250: 06 28 EB 46 D3 E4 85 51 3E E2 A5 40 50 50 85 7D    .(kFSd.Q>b%@PP.}
00000260: 72 6B 20 87 1A 6E 73 E1 B8 88 9E 20 23 48 6D FE    rk...nsa8...#Hm~
00000270: C2 0D 39 ED 24 B2 6D B5 9B 81 B6 BC F4 EE DE A2    B.9m$2m5..6..bB.{"&.!4.R^5
000002b0: 2A A6 E2 71 D7 4F 96 0A EC AE 8D 39 27 B8 CF 61    *&bqWO..l..9'8Oa
000002c0: CC ED E9 AF 74 C3 95 D3 E3 96 32 20 E6 31 0B E4    Lmi/tC.Sc.2.f1.d
000002d0: DC F4 FF 41 37 36 E7 DB 87 AE B3 7D BF CA F8 05    \t.A76g[..3}?Jx.
000002e0: 72 2A 38 AB B8 8E 98 43 97 C8 5E 80 57 C6 E7 1E    r*8+8..C.H^.WFg.
000002f0: 86 75 CE CD CE BF CF 10 C9 8A C2 C9 6E 33 41 AC    .uNMN?O.I.BIn3A,
00000300: 91 AC A8 F3 1B E6 D5 0A 22 A1 2C 4C 68 19 51 4D    .,(s.fU."!,Lh.QM
00000310: 17 DA AE E1 D7 BC 0E 2D F8 14 61 E2 4F BA 26 A3    .Z.aW<.-x.abO:&#
00000320: 0A E4 A6 BE 08 EA 3C 28 E6 C5 6B CA 3A 86 D2 59    .d&>.j<(fEkJ:.RY
00000330: 34 C2 ED 91 72 5A EF 2C BE D7 38 A4 60 D7 F3 97    4Bm.rZo,>W8$`Ws.
00000340: BB E6 FD C2 D0 29 10 B5 A4 79 D8 3E 61 48 8A F9    ;f}BP).5$yX>aH.y
00000350: C6 D8 13 D0 FD DB D6 FA 24 7F CD 5A BF 06 57 49    FX.P}[Vz$.MZ?.WI
00000360: 51 EC ED B2 74 AB 92 1D 37 68 70 A2 A5 31 B5 5F    Qlm2t+..7hp"%15_
00000370: EA CF 9E 3E 6A B1 78 16 B7 94 D1 46 7B 63 C1 67    jO.>j1x.7.QF{cAg
00000380: D2 B0 08 44 64 1E 68 15 39 80 E3 DD EB C0 E1 71    R0.Dd.h.9.c]k@aq
00000390: E8 EE D0 4D DF 4F 41 E0 96 C5 34 AD BC D3 9E 88    hnPM_OA`.E4-'.7pV%_>.T..
00000430: 7F FC AD 71 CE AF 54 8B 5D DC 27 34 20 A3 0A 73    .|-qN/T.]\'4.#.s
00000440: 76 A5 81 33 22 31 56 6B 1D 82 C4 32 FB 82 15 F6    v%.3"1Vk..D2{..v
00000450: 97 C8 47 29 3C 9E 59 9A C0 83 48 A0 55 CB C8 D6    .HG)<.Y.@.H.UKHV
00000460: 36 92 CC 54 A7 00 E3 28 9E 99 45 B2 E5 7E 88 A7    6.LT'.c(..E2e~.'
00000470: 28 4E CA 75 17 3C D3 B5 6C F5 FD AC 05 55 BF F7    (NJu.?{.T2Yr.h.wYGw
000004d0: 3C 19 C8 7B 81 9B 17 19 E9 81 A0 36 AD C6 62 71    <.H{....i..6-Fbq
000004e0: DB 68 72 8F 6A 37 45 D9 0E 6E DC 2C 5E 52 C2 75    [hr.j7EY.n\,^RBu
000004f0: 51 2F F9 CE 8A 10 12 E9 C8 68 A9 D6 A6 D7 5B 14    Q/yN...iHh)V&W[.
00000500: 11 51 42 FD BE B5 09 56 7F 19 C3 EB A7 A6 DF 6C    .QB}>5.V..Ck'&_l
00000510: 55 A3 11 DC EF 81 C3 CD DD 63 BF 38 F8 5A 4A 45    U#.\o.CM]c?8xZJE
00000520: 33 24 7B A4 55 B3 85 A6 87 75 3B 85 51 5C 03 B7    3${$U3.&.u;.Q\.7


  


  UPDATE TO THE CODE

  


  1st Packet find here
2nd Packet find here

  


  I have updated the code as per one of the comment to read only MDAT box to retrieve H264 stream from the incoming bytes[] through the socket, now I send only MDAT box contents (next byte after MDAT box)

  


  public Map.Entry> hasMdat(byte[] byteArray) {
    for (int i = 0; i < byteArray.length - 3; i++) {
        if (byteArray[i] == (byte) 109 &&
                byteArray[i + 1] == (byte) 100 &&
                byteArray[i + 2] == (byte) 97 &&
                byteArray[i + 3] == (byte) 116) {

            return Map.entry(true, Arrays.asList(i, i + 1, i + 2, i + 3));
        }
    }
    return Map.entry(false, List.of(0));
}


  


  This is my code which handles the byte stream

  


  initSocketConnection(new VideoStreamCallback() {
        @Override
        public void onVideoStreamReceived(byte[] bytes) {
           
Map.Entry> b = hasMdat(bytes);
        if (b.getKey()) {
            byte[] b1 = Arrays.copyOfRange(bytes, b.getValue().get(3) + 1, bytes.length);
  //write b1 back to client using spring SSE
            
        }

        }
    });