Recherche avancée

Médias (1)

Mot : - Tags -/iphone

Autres articles (97)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Participer à sa documentation

    10 avril 2011

    La documentation est un des travaux les plus importants et les plus contraignants lors de la réalisation d’un outil technique.
    Tout apport extérieur à ce sujet est primordial : la critique de l’existant ; la participation à la rédaction d’articles orientés : utilisateur (administrateur de MediaSPIP ou simplement producteur de contenu) ; développeur ; la création de screencasts d’explication ; la traduction de la documentation dans une nouvelle langue ;
    Pour ce faire, vous pouvez vous inscrire sur (...)

  • Contribute to a better visual interface

    13 avril 2011

    MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
    Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community.

Sur d’autres sites (6666)

  • FFMPEG + HW Acceleration + Kepler GPU Lossless encoding not supported ?

    11 juillet 2022, par user2522885

    I'm curious about FFMPEG and GPU hardware acceleration. My Windows 10 system uses the Asus / nVidia GTX 760 graphics card and Intel i5-2500K CPU. My graphics card claims to be of the Kepler architecture with CUDA 3.0 as shown here.

    


    Instead of going through the hassles of compiling FFMPEG with hw acceleration support i downloaded a pre-compiled binary from here and here.

    


    Next, i tried running a test with hw acceleration options as recommended here :

    


    ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -i "input.mkv" -c:a copy -c:v h264_nvenc "output.mp4"


    


    I then received the error message :

    


    [h264_nvenc @ 000001c34eeda8c0] Lossless encoding not supported
[h264_nvenc @ 000001c34eeda8c0] Provided device doesn't support required NVENC features
Error initializing output stream 0:0 — Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

    


    What am i doing wrong ? For the record i install the CUDA setup file but it made no difference. I am using the latest nVidia drivers.

    


    UPDATE

    


    ffmpeg -h encoder=h264_nvenc

    


    ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers&#xA;  built with gcc 10.2.0 (Rev6, Built by MSYS2 project)&#xA;  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libglslang --enable-vulkan --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint&#xA;  libavutil      56. 70.100 / 56. 70.100&#xA;  libavcodec     58.134.100 / 58.134.100&#xA;  libavformat    58. 76.100 / 58. 76.100&#xA;  libavdevice    58. 13.100 / 58. 13.100&#xA;  libavfilter     7.110.100 /  7.110.100&#xA;  libswscale      5.  9.100 /  5.  9.100&#xA;  libswresample   3.  9.100 /  3.  9.100&#xA;  libpostproc    55.  9.100 / 55.  9.100&#xA;Encoder h264_nvenc [NVIDIA NVENC H.264 encoder]:&#xA;    General capabilities: dr1 delay hardware&#xA;    Threading capabilities: none&#xA;    Supported hardware devices: cuda cuda d3d11va d3d11va&#xA;    Supported pixel formats: yuv420p nv12 p010le yuv444p p016le yuv444p16le bgr0 rgb0 cuda d3d11&#xA;h264_nvenc AVOptions:&#xA;  -preset            <int>        E..V....... Set the encoding preset (from 0 to 18) (default p4)&#xA;     default         0            E..V.......&#xA;     slow            1            E..V....... hq 2 passes&#xA;     medium          2            E..V....... hq 1 pass&#xA;     fast            3            E..V....... hp 1 pass&#xA;     hp              4            E..V.......&#xA;     hq              5            E..V.......&#xA;     bd              6            E..V.......&#xA;     ll              7            E..V....... low latency&#xA;     llhq            8            E..V....... low latency hq&#xA;     llhp            9            E..V....... low latency hp&#xA;     lossless        10           E..V.......&#xA;     losslesshp      11           E..V.......&#xA;     p1              12           E..V....... fastest (lowest quality)&#xA;     p2              13           E..V....... faster (lower quality)&#xA;     p3              14           E..V....... fast (low quality)&#xA;     p4              15           E..V....... medium (default)&#xA;     p5              16           E..V....... slow (good quality)&#xA;     p6              17           E..V....... slower (better quality)&#xA;     p7              18           E..V....... slowest (best quality)&#xA;  -tune              <int>        E..V....... Set the encoding tuning info (from 1 to 4) (default hq)&#xA;     hq              1            E..V....... High quality&#xA;     ll              2            E..V....... Low latency&#xA;     ull             3            E..V....... Ultra low latency&#xA;     lossless        4            E..V....... Lossless&#xA;  -profile           <int>        E..V....... Set the encoding profile (from 0 to 3) (default main)&#xA;     baseline        0            E..V.......&#xA;     main            1            E..V.......&#xA;     high            2            E..V.......&#xA;     high444p        3            E..V.......&#xA;  -level             <int>        E..V....... Set the encoding level restriction (from 0 to 62) (default auto)&#xA;     auto            0            E..V.......&#xA;     1               10           E..V.......&#xA;     1.0             10           E..V.......&#xA;     1b              9            E..V.......&#xA;     1.0b            9            E..V.......&#xA;     1.1             11           E..V.......&#xA;     1.2             12           E..V.......&#xA;     1.3             13           E..V.......&#xA;     2               20           E..V.......&#xA;     2.0             20           E..V.......&#xA;     2.1             21           E..V.......&#xA;     2.2             22           E..V.......&#xA;     3               30           E..V.......&#xA;     3.0             30           E..V.......&#xA;     3.1             31           E..V.......&#xA;     3.2             32           E..V.......&#xA;     4               40           E..V.......&#xA;     4.0             40           E..V.......&#xA;     4.1             41           E..V.......&#xA;     4.2             42           E..V.......&#xA;     5               50           E..V.......&#xA;     5.0             50           E..V.......&#xA;     5.1             51           E..V.......&#xA;     5.2             52           E..V.......&#xA;     6.0             60           E..V.......&#xA;     6.1             61           E..V.......&#xA;     6.2             62           E..V.......&#xA;  -rc                <int>        E..V....... Override the preset rate-control (from -1 to INT_MAX) (default -1)&#xA;     constqp         0            E..V....... Constant QP mode&#xA;     vbr             1            E..V....... Variable bitrate mode&#xA;     cbr             2            E..V....... Constant bitrate mode&#xA;     vbr_minqp       8388612      E..V....... Variable bitrate mode with MinQP (deprecated)&#xA;     ll_2pass_quality 8388616      E..V....... Multi-pass optimized for image quality (deprecated)&#xA;     ll_2pass_size   8388624      E..V....... Multi-pass optimized for constant frame size (deprecated)&#xA;     vbr_2pass       8388640      E..V....... Multi-pass variable bitrate mode (deprecated)&#xA;     cbr_ld_hq       8388616      E..V....... Constant bitrate low delay high quality mode&#xA;     cbr_hq          8388624      E..V....... Constant bitrate high quality mode&#xA;     vbr_hq          8388640      E..V....... Variable bitrate high quality mode&#xA;  -rc-lookahead      <int>        E..V....... Number of frames to look ahead for rate-control (from 0 to INT_MAX) (default 0)&#xA;  -surfaces          <int>        E..V....... Number of concurrent surfaces (from 0 to 64) (default 0)&#xA;  -cbr               <boolean>    E..V....... Use cbr encoding mode (default false)&#xA;  -2pass             <boolean>    E..V....... Use 2pass encoding mode (default auto)&#xA;  -gpu               <int>        E..V....... Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on. (from -2 to INT_MAX) (default any)&#xA;     any             -1           E..V....... Pick the first device available&#xA;     list            -2           E..V....... List the available devices&#xA;  -delay             <int>        E..V....... Delay frame output by the given amount of frames (from 0 to INT_MAX) (default INT_MAX)&#xA;  -no-scenecut       <boolean>    E..V....... When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts (default false)&#xA;  -forced-idr        <boolean>    E..V....... If forcing keyframes, force them as IDR frames. (default false)&#xA;  -b_adapt           <boolean>    E..V....... When lookahead is enabled, set this to 0 to disable adaptive B-frame decision (default true)&#xA;  -spatial-aq        <boolean>    E..V....... set to 1 to enable Spatial AQ (default false)&#xA;  -spatial_aq        <boolean>    E..V....... set to 1 to enable Spatial AQ (default false)&#xA;  -temporal-aq       <boolean>    E..V....... set to 1 to enable Temporal AQ (default false)&#xA;  -temporal_aq       <boolean>    E..V....... set to 1 to enable Temporal AQ (default false)&#xA;  -zerolatency       <boolean>    E..V....... Set 1 to indicate zero latency operation (no reordering delay) (default false)&#xA;  -nonref_p          <boolean>    E..V....... Set this to 1 to enable automatic insertion of non-reference P-frames (default false)&#xA;  -strict_gop        <boolean>    E..V....... Set 1 to minimize GOP-to-GOP rate fluctuations (default false)&#xA;  -aq-strength       <int>        E..V....... When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive) (from 1 to 15) (default 8)&#xA;  -cq                <float>      E..V....... Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control (from 0 to 51) (default 0)&#xA;  -aud               <boolean>    E..V....... Use access unit delimiters (default false)&#xA;  -bluray-compat     <boolean>    E..V....... Bluray compatibility workarounds (default false)&#xA;  -init_qpP          <int>        E..V....... Initial QP value for P frame (from -1 to 51) (default -1)&#xA;  -init_qpB          <int>        E..V....... Initial QP value for B frame (from -1 to 51) (default -1)&#xA;  -init_qpI          <int>        E..V....... Initial QP value for I frame (from -1 to 51) (default -1)&#xA;  -qp                <int>        E..V....... Constant quantization parameter rate control method (from -1 to 51) (default -1)&#xA;  -weighted_pred     <int>        E..V....... Set 1 to enable weighted prediction (from 0 to 1) (default 0)&#xA;  -coder             <int>        E..V....... Coder type (from -1 to 2) (default default)&#xA;     default         -1           E..V.......&#xA;     auto            0            E..V.......&#xA;     cabac           1            E..V.......&#xA;     cavlc           2            E..V.......&#xA;     ac              1            E..V.......&#xA;     vlc             2            E..V.......&#xA;  -b_ref_mode        <int>        E..V....... Use B frames as references (from 0 to 2) (default disabled)&#xA;     disabled        0            E..V....... B frames will not be used for reference&#xA;     each            1            E..V....... Each B frame will be used for reference&#xA;     middle          2            E..V....... Only (number of B frames)/2 will be used for reference&#xA;  -a53cc             <boolean>    E..V....... Use A53 Closed Captions (if available) (default true)&#xA;  -dpb_size          <int>        E..V....... Specifies the DPB size used for encoding (0 means automatic) (from 0 to INT_MAX) (default 0)&#xA;  -multipass         <int>        E..V....... Set the multipass encoding (from 0 to 2) (default disabled)&#xA;     disabled        0            E..V....... Single Pass&#xA;     qres            1            E..V....... Two Pass encoding is enabled where first Pass is quarter resolution&#xA;     fullres         2            E..V....... Two Pass encoding is enabled where first Pass is full resolution&#xA;  -ldkfs             <int>        E..V....... Low delay key frame scale; Specifies the Scene Change frame size increase allowed in case of single frame VBV and CBR (from 0 to 255) (default 0)&#xA;</int></int></int></boolean></int></int></int></int></int></int></int></boolean></boolean></float></int></boolean></boolean></boolean></boolean></boolean></boolean></boolean></boolean></boolean></boolean></int></int></boolean></boolean></int></int></int></int></int></int></int>

    &#xA;

  • Java - Stream OpenGL Display to Android

    24 octobre 2016, par Intektor

    I tried to solve this problem for days now, but I couldn’t find a working solution. I am trying to stream my game screen (lwjgl) to my android smartphone(I have a frame buffer with the texture), and I already built a fully working packet system and all that stuff. But there are several problem I have no idea how to solve them, first of all, I don’t know in which format I should send the frame buffer, e.g I can’t send it as a Buffered Image, because it doesn’t exist on android. I tried using the jcodec library, but there is no documentation for it, and I didn’t find any examples that fit my case. I think I have to encode and decode it with h264 to make it a realtime live stream(that’s very important). I also heard about ffmpeg (and I found a java library for it : https://github.com/bramp/ffmpeg-cli-wrapper) but there is again no documentation for how to use it to stream it to my mobile. Also I have the problem, that when would get the frames to my smartphone, how can I make them load by the graphics card

    Here is what I have done so far :
    My packet :

    public class ImagePacketToClient implements Packet {

    public byte[] jpgInfo;
    public int width;
    public int height;

    BufferedImage image;

    public ImagePacketToClient() {
    }

    public ImagePacketToClient(BufferedImage image, int width, int height) {
       this.image = image;
       this.width = width;
       this.height = height;
    }

    @Override
    public void write(DataOutputStream out) throws IOException {
       ByteArrayOutputStream baos = new ByteArrayOutputStream();
       ImageIO.write(image, "jpg", baos);
       baos.flush();
       byte[] bytes = baos.toByteArray();
       baos.close();
       out.writeInt(bytes.length);
       for (byte aByte : bytes) {
           out.writeInt(aByte);
       }
    }

    @Override
    public void read(DataInputStream in) throws IOException {
       int length = in.readInt();
       jpgInfo = new byte[length];
       for (int i = 0; i &lt; length; i++) {
           jpgInfo[i] = in.readByte();
       }
    }

    The code that gets called after the rendering has finished : mc.framebuffer is the frame buffer I can use :

    ScaledResolution resolution = new ScaledResolution(mc);
               BufferedImage screenshot = ScreenShotHelper.createScreenshot(resolution.getScaledWidth(), resolution.getScaledHeight(), mc.getFramebuffer());
               ImagePacketToClient packet = new ImagePacketToClient(screenshot, screenshot.getWidth(), screenshot.getHeight());
               PacketHelper.sendPacket(packet, CardboardMod.communicator.connectedSocket);
               screenshot.flush();

    public static BufferedImage createScreenshot(int width, int height, Framebuffer framebufferIn)
    {
       if (OpenGlHelper.isFramebufferEnabled())
       {
           width = framebufferIn.framebufferTextureWidth;
           height = framebufferIn.framebufferTextureHeight;
       }

       int i = width * height;

       if (pixelBuffer == null || pixelBuffer.capacity() &lt; i)
       {
           pixelBuffer = BufferUtils.createIntBuffer(i);
           pixelValues = new int[i];
       }

       GlStateManager.glPixelStorei(3333, 1);
       GlStateManager.glPixelStorei(3317, 1);
       pixelBuffer.clear();

       if (OpenGlHelper.isFramebufferEnabled())
       {
           GlStateManager.bindTexture(framebufferIn.framebufferTexture);
           GlStateManager.glGetTexImage(3553, 0, 32993, 33639, pixelBuffer);
       }
       else
       {
           GlStateManager.glReadPixels(0, 0, width, height, 32993, 33639, pixelBuffer);
       }

       pixelBuffer.get(pixelValues);
       TextureUtil.processPixelValues(pixelValues, width, height);
       BufferedImage bufferedimage;

       if (OpenGlHelper.isFramebufferEnabled())
       {
           bufferedimage = new BufferedImage(framebufferIn.framebufferWidth, framebufferIn.framebufferHeight, 1);
           int j = framebufferIn.framebufferTextureHeight - framebufferIn.framebufferHeight;

           for (int k = j; k &lt; framebufferIn.framebufferTextureHeight; ++k)
           {
               for (int l = 0; l &lt; framebufferIn.framebufferWidth; ++l)
               {
                   bufferedimage.setRGB(l, k - j, pixelValues[k * framebufferIn.framebufferTextureWidth + l]);
               }
           }
       }
       else
       {
           bufferedimage = new BufferedImage(width, height, 1);
           bufferedimage.setRGB(0, 0, width, height, pixelValues, 0, width);
       }

       return bufferedimage;
    }

    Honestly I don’t want to use this Buffered Image Stuff, because it halfs my framerate, and that’s not good.
    And I don’t have any code for my android application yet, because I couldn’t figure out how I could get this image recreated on Android, and how to load it after that.
    I hope you understand my problem and I am happy about every tip you can give to me :)

  • improve video size ffmpeg webcam stream

    18 juin 2020, par Wolfgang Enfield

    I am trying to use a webcam Logitech Quickcam 9000 to do IRL stream from a Raspberry 3 using Raspberry Pi OS current version, I have FFmpeg installed and no matter what I try the video resolution is never bigger than 320x240 the webcam can output 1600x1200 the output of v4l2-ctl —list-formats-ext

    &#xA;&#xA;

    output

    &#xA;&#xA;

    ioctl: VIDIOC_ENUM_FMT&#xA;    Type: Video Capture&#xA;&#xA;    [0]: &#x27;MJPG&#x27; (Motion-JPEG, compressed)&#xA;        Size: Discrete 160x120&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 176x144&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 320x240&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 352x288&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 640x480&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 800x600&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 960x720&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;    [1]: &#x27;YUYV&#x27; (YUYV 4:2:2)&#xA;        Size: Discrete 160x120&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 176x144&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 320x240&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 352x288&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 640x480&#xA;            Interval: Discrete 0.033s (30.000 fps)&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 800x600&#xA;            Interval: Discrete 0.040s (25.000 fps)&#xA;            Interval: Discrete 0.050s (20.000 fps)&#xA;            Interval: Discrete 0.067s (15.000 fps)&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 960x720&#xA;            Interval: Discrete 0.100s (10.000 fps)&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;        Size: Discrete 1600x1200&#xA;            Interval: Discrete 0.200s (5.000 fps)&#xA;

    &#xA;&#xA;

    Command ran

    &#xA;&#xA;

    ffmpeg \&#xA;-thread_queue_size 1024 \&#xA;-f alsa -guess_layout_max 0 -i default:CARD=Q9000 \&#xA;-thread_queue_size 512 \&#xA;-f v4l2 -i /dev/video0 \&#xA;-c:v libx264 -pix_fmt yuv420p -preset veryfast -g 8 -b:v 2500k -maxrate 2500k \&#xA;-bufsize 32k -strict experimental \&#xA;-acodec libmp3lame -ar 44100 \&#xA;-threads 4 -q:v 5 \&#xA;-q:a 5 \&#xA;-b:a 32k \&#xA;-r 30 \&#xA;-video_size 800&#xD7;600 \&#xA;-f flv rtmp:// url removed&#xA;

    &#xA;&#xA;

    I used the suggestion by llogan

    &#xA;&#xA;

    the output was

    &#xA;&#xA;

    ffmpeg -thread_queue_size 1024 -f alsa -guess_layout_max 0 -sample_rate 44100 -i default:CARD=Q9000 -thread_queue_size 512 -f v4l2 -video_size 800x600 -framerate 25 -i /dev/video0 -c:v libx264 -pix_fmt yuv420p -preset veryfast -g 50 -b:v 2500k -maxrate 2500k -bufsize 7500k -acodec aac -b:a 32k -f flv rtmp:// url removed&#xA;ffmpeg version 4.1.4-1&#x2B;rpt7~deb10u1 Copyright (c) 2000-2019 the FFmpeg developers&#xA;  built with gcc 8 (Raspbian 8.3.0-6&#x2B;rpi1)&#xA;  configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared --libdir=/usr/lib/arm-linux-gnueabihf --cpu=arm1176jzf-s --arch=arm&#xA;  WARNING: library configuration mismatch&#xA;  avutil      configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  avcodec     configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  avformat    configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  avdevice    configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  avfilter    configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  avresample  configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  swscale     configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  swresample  configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  postproc    configuration: --prefix=/usr --extra-version=&#x27;1&#x2B;rpt7~deb10u1&#x27; --toolchain=hardened --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-omx-rpi --enable-mmal --enable-neon --enable-rpi --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --libdir=/usr/lib/arm-linux-gnueabihf/neon/vfp --cpu=cortex-a7 --arch=armv6t2 --disable-thumb --enable-shared --disable-doc --disable-programs&#xA;  libavutil      56. 22.100 / 56. 22.100&#xA;  libavcodec     58. 35.100 / 58. 35.100&#xA;  libavformat    58. 20.100 / 58. 20.100&#xA;  libavdevice    58.  5.100 / 58.  5.100&#xA;  libavfilter     7. 40.101 /  7. 40.101&#xA;  libavresample   4.  0.  0 /  4.  0.  0&#xA;  libswscale      5.  3.100 /  5.  3.100&#xA;  libswresample   3.  3.100 /  3.  3.100&#xA;  libpostproc    55.  3.100 / 55.  3.100&#xA;Input #0, alsa, from &#x27;default:CARD=Q9000&#x27;:&#xA;  Duration: N/A, start: 1592431360.618918, bitrate: 1411 kb/s&#xA;    Stream #0:0: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s&#xA;Input #1, video4linux2,v4l2, from &#x27;/dev/video0&#x27;:&#xA;  Duration: N/A, start: 674.216340, bitrate: 192000 kb/s&#xA;    Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 800x600, 192000 kb/s, 25 fps, 25 tbr, 1000k tbn, 1000k tbc&#xA;Stream mapping:&#xA;  Stream #1:0 -> #0:0 (rawvideo (native) -> h264 (libx264))&#xA;  Stream #0:0 -> #0:1 (pcm_s16le (native) -> aac (native))&#xA;Press [q] to stop, [?] for help&#xA;[alsa @ 0xaea410] ALSA buffer xrun.&#xA;[libx264 @ 0xb362e0] using cpu capabilities: ARMv6 NEON&#xA;[libx264 @ 0xb362e0] profile High, level 3.1&#xA;[libx264 @ 0xb362e0] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=6 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=1 keyint=50 keyint_min=5 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=cbr mbtree=1 bitrate=2500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2500 vbv_bufsize=7500 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00&#xA;[aac @ 0xb381f0] Unsupported channel layout "0 channels"&#xA;Error initializing output stream 0:1 -- Error while opening encoder for output stream #0:1 - maybe incorrect parameters such as bit_rate, rate, width or height&#xA;Conversion failed!&#xA;&#xA;

    &#xA;