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    2 mai 2011, par

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Sur d’autres sites (7174)

  • How to get rtp(javacv ffmpeg) stream from VLC as client

    15 avril 2015, par Sezertt

    I am trying to play rtp stream from vlc player which I created using javacv. Here is the code :

           FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber("rtsp://10.6.0.147:554/ufirststream");
           frameGrabber.start();  // First I take another stream

           FFmpegFrameRecorder frameRecorder = new FFmpegFrameRecorder("rtp://239.31.31.69:4433", frameGrabber.getImageWidth(), frameGrabber.getImageHeight());

           frameRecorder.setFormat("rtp");
           frameRecorder.setPixelFormat(AV_PIX_FMT_YUV420P);
           frameRecorder.setVideoCodec(AV_CODEC_ID_MPEG2VIDEO); <-- AV_CODEC_ID_H264
           frameRecorder.setFrameRate(25);          
           frameRecorder.setVideoBitrate(1024); <--1024*1024*2            
           frameRecorder.start();
           while (true) {
               frameRecorder.record(frameGrabber.grab()); //grab from stream, stream with rtp
           }

    If I choose my codec as AV_CODEC_ID_MPEG2VIDEO I can play the stream from VLC using rtp ://239.31.31.69:4433 with open network.

    If I increase the quality using setVideoBitrate(1024*1024*2) the stream lags too much and if I decrease the quality is so bad.

    I want to use AV_CODEC_ID_H264 as my codec to fasten things with better quality but i can’t play the stream from VLC getting error :

    SDP required A description in SDP format is required to receive the RTP stream. Note that rtp :// URIs cannot work with dynamic RTP payload format (96).

    I tried to get sdp using wireshark and then I realized rtp stream doesn’t have sdp :) so I tried to create my own sdp like this

    c=IN IP4 239.31.31.69
    m=video 4433 RTP/AVP 96
    a=rtpmap:96 H264/90000

    and this

    v=0
    c=IN IP4 239.31.31.69
    a=recvonly
    t=0 0
    m=video 4433 RTP/AVP 99
    a=rtpmap:99 H264/90000
    a=fmtp:99 packetization-mode=1;profile-level-id=42c01e;sprop-parameter sets=Z0LAHukBQHsg,aM4G4g==;

    but both seems to fail similar to this

    > core debug: adding item `asf.sdp' ( file:///C:/Users/Sezer/Desktop/asf.sdp )
    core debug: processing request item: asf.sdp, node: null, skip: 0
    core debug: rebuilding array of current - root Playlist
    core debug: rebuild done - 7 items, index 6
    core debug: starting playback of the new playlist item
    core debug: resyncing on asf.sdp
    core debug: asf.sdp is at 6
    core debug: creating new input thread
    core debug: Creating an input for 'asf.sdp'
    core debug: Creating an input for 'asf.sdp'
    core debug: requesting art for asf.sdp
    core debug: using timeshift granularity of 50 MiB, in path 'C:\Users\Sezer\AppData\Local\Temp'
    core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' gives access `file' demux `' path `/C:/Users/Sezer/Desktop/asf.sdp'
    core debug: specified demux `any'
    core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'
    core debug: looking for access_demux module matching "file": 12 candidates
    core debug: looking for meta fetcher module matching "any": 1 candidates
    core debug: no access_demux modules matched
    core debug: creating access 'file' location='/C:/Users/Sezer/Desktop/asf.sdp', path='C:\Users\Sezer\Desktop\asf.sdp'
    core debug: looking for access module matching "file": 21 candidates
    filesystem debug: opening file `C:\Users\Sezer\Desktop\asf.sdp'
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
    core debug: using access module "filesystem"
    core debug: Using stream method for AStream*
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
    core debug: starting pre-buffering
    core debug: received first data after 0 ms
    core debug: pre-buffering done 193 bytes in 0s - 188476 KiB/s
    core debug: looking for stream_filter module matching "any": 6 candidates
    core debug: no stream_filter modules matched
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    core debug: looking for stream_filter module matching "record": 6 candidates
    core debug: using stream_filter module "record"
    core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'
    core debug: looking for demux module matching "any": 65 candidates
    live555 debug: version 2014.07.25
    live555 debug: RTP subsession 'video/H264'
    core debug: selecting program id=0
    core debug: adding item `file.sdp' ( file:///C:/Users/Sezer/Desktop/file.sdp )
    live555 debug: setup start: 0.000000 stop:0.000000
    live555 debug: play start: 0.000000 stop:0.000000
    core debug: using demux module "live555"
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    core debug: no meta fetcher modules matched
    core debug: looking for a subtitle file in C:\Users\Sezer\Desktop\
    core debug: searching art for asf.sdp
    core debug: looking for art finder module matching "any": 2 candidates
    core debug: looking for decoder module matching "any": 43 candidates
    avcodec debug: CPU flags: 0x010053db
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
    avcodec debug: trying to use direct rendering
    avcodec debug: allowing 4 thread(s) for decoding
    avcodec warning: threaded frame decoding is not compatible with DXVA2, disabled
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    core debug: meta ok for (null), need to fetch art
    core debug: Creating an input for 'file.sdp'
    avcodec debug: avcodec codec (H264 - MPEG-4 AVC (part 10)) started
    avcodec debug: using slice thread mode with 4 threads
    core debug: using decoder module "avcodec"
    core debug: looking for meta fetcher module matching "any": 1 candidates
    core debug: looking for packetizer module matching "any": 23 candidates
    core debug: using packetizer module "packetizer_h264"
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
    core debug: looking for meta reader module matching "any": 2 candidates
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\reader
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader\filename.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    core debug: no meta fetcher modules matched
    core debug: searching art for asf.sdp
    core debug: looking for art finder module matching "any": 2 candidates
    core debug: no meta reader modules matched
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' successfully opened
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
    core debug: meta ok for (null), need to fetch art
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    core debug: no art finder modules matched
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    core debug: looking for meta fetcher module matching "any": 1 candidates
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    core debug: using meta fetcher module "lua"
    core debug: removing module "lua"
    core debug: searching art for asf.sdp
    core debug: looking for art finder module matching "any": 2 candidates
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    qt4 debug: IM: Setting an input
    core debug: no art finder modules matched
    core debug: looking for meta fetcher module matching "any": 1 candidates
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    core debug: no meta fetcher modules matched
    core debug: searching art for file.sdp
    core debug: looking for art finder module matching "any": 2 candidates
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    core debug: no art finder modules matched
    core debug: art not found for asf.sdp
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    core debug: no art finder modules matched
    core debug: looking for meta fetcher module matching "any": 1 candidates
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    core debug: using meta fetcher module "lua"
    core debug: removing module "lua"
    core debug: searching art for asf.sdp
    core debug: looking for art finder module matching "any": 2 candidates
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    core debug: no art finder modules matched
    core debug: art not found for asf.sdp
    core debug: looking for meta fetcher module matching "any": 1 candidates
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
    core debug: using meta fetcher module "lua"
    core debug: removing module "lua"
    core debug: searching art for file.sdp
    core debug: looking for art finder module matching "any": 2 candidates
    lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
    lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
    lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
    core debug: no art finder modules matched
    core debug: art not found for file.sdp

    Can you lead me to the right direction ? What should I do to get fair quality and no lag using rtp ?

  • drawbox : error when evaluating the expression 'max'

    11 mai 2017, par PHP Developer

    I try use the command :

    /usr/bin/ffmpeg -i uploads/14940964561.mp4 -vf "drawbox=x=0:y=0:w=1000:h=1000:color=white@0.2:t=max" uploads/output.mp4

    Output error

    ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg developers
    built on Nov 22 2014 17:07:19 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    configuration: --prefix=/usr --extra-version='1ubuntu1~trusty6' --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/i386-l
    inux-gnu --shlibdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth
    --enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-lib
    freetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-li
    brtmp --enable-libschroedinger --enable-libshine --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-li
    bwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libx265 --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --
    enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv
    libavutil      54.  7.100 / 54.  7.100
    libavcodec     56.  1.100 / 56.  1.100
    libavformat    56.  4.101 / 56.  4.101
    libavdevice    56.  0.100 / 56.  0.100
    libavfilter     5.  1.100 /  5.  1.100
    libavresample   2.  1.  0 /  2.  1.  0
    libswscale      3.  0.100 /  3.  0.100
    libswresample   1.  1.100 /  1.  1.100
    libpostproc    53.  0.100 / 53.  0.100
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '14942588091.mp4':
    Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf56.4.101
    Duration: 00:00:08.00, start: 0.000000, bitrate: 350 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 347 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
     handler_name    : VideoHandler
    [Parsed_drawbox_0 @ 0x856b8e0] [Eval @ 0xbf9ae638] Undefined constant or missing '(' in 'max'
    Last message repeated 5 times
    [Parsed_drawbox_0 @ 0x856b8e0] Error when evaluating the expression 'max'
    [Parsed_drawbox_0 @ 0x856b8e0] Failed to configure input pad on Parsed_drawbox_0
    Error opening filters!

    This is message the error correct.
    Previously, a message and code is wrong. I’m sorry !

    Message error :

    I use the Ubuntu 32 bits, but the command in Windows 10 work.

  • Collect decoded audio from libav as doubles

    29 juillet 2015, par gapc

    I’m currently trying to gather decoded audio data (from multiple formats) to perform certain audio manipulations (using a *.wav file for testing).

    I have a class that handles all the decoding via FFmpeg libav. If I extract the data as unit8_t into a vector, and

    for (int i = 0; i < bytevector.size(); i++) {
       fwrite(&bytevector[i], sizeof (uint8_t), 1, outfile2);
    }

    to a raw file and play it via
    play -t raw -r 44100 -b16 -c 1 -e signed sound.raw it sounds perfectly fine.

    However, how is it possible to have all the correct information as doubles when the file for example is 2 bytes per sample and the frame->data information is given as uint8_t ? The wav files I’ve tested are 44100/16bits/1 channel. (I already have code that will change uint8_t* into a double)

    Opening the same files with Scilab will show half the size of the byte vector as doubles.

    wav file in Scilab as an array of doubles shows :

    -0.1, -0.099, -0.098, ..., 0.099, +0.1

    versus byte vector :
    51, 243, 84, 243, 117, 243, ...

    Can 51 and 243 really form a double ? Any suggestions on how to get past this issue ?

    Code below for reference :

    while ((av_read_frame(formatContext, &readingPacket)) == 0) {
           if (readingPacket.stream_index == audioStreamIdx) {
               AVPacket decodingPacket = readingPacket;

               while (decodingPacket.size > 0) {
                   int gotFrame = 0;
                   int result = avcodec_decode_audio4(context, frame, &gotFrame, &decodingPacket);

                   if (result < 0) {
                       break;
                   }

                   decoded = FFMIN(result, decodingPacket.size);

                   if (gotFrame) {
                       data_size = (av_get_bytes_per_sample(context->sample_fmt));
                       if (data_size < 0) {
                       }

                       // Only for 1 channel temporarily
                       for (int i = 0; i < frame->nb_samples; i++) {
                           for (int ch = 0; ch < context->channels; ch++) {
                               for (int j = 0; j < data_size; j++) {
                                   bytevector.push_back(*(frame->data[ch] + data_size * i + j));
                               }
                           }
                       }
                   } else {
                       decodingPacket.size = 0;
                       decodingPacket.data = NULL;
                   }
                   decodingPacket.size -= result;
                   decodingPacket.data += result;
               }
           }
           av_free_packet(&readingPacket);
       }