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• Is this a problem in my command, the stream, or FFMPEG itself ? [closed]

  10 juin, par Ali Mustafa

  I am trying to download a section from approximately 06:40:00 to 06:44:00 from this stream : https://kick.com/grossgore/videos/8d36c089-ff2b-4167-9c92-bc8a3a9d033b

  


  I found the m3u8 URL : https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8

  


  I run the following command :

  


  ffmpeg -ss 06:40:00 -to 06:44:00 -i https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8 -c copy out.mp4


  


  The command runs for a while, but for some reason the output file is empty once the program has finished. How do I figure out what the problem is ?

  


  Log :

  


  ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --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-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
[hls @ 0x633e19ea3200] Skip ('#EXT-X-VERSION:3')
[hls @ 0x633e19ea3200] Skip ('#ID3-EQUIV-TDTG:2025-05-25T21:04:39')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-TWITCH-ELAPSED-SECS:0.000')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-TWITCH-TOTAL-SECS:29231.935')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:56:26.675Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:56:39.175Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:56:51.675Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T12:57:04.175Z')
...
...
...
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:38:43.058Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:38:55.558Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-DISCONTINUITY')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-TWITCH-DISCONTINUITY')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:39:56.883Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T17:40:09.383Z')
...
...
...
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T21:04:17.516Z')
[hls @ 0x633e19ea3200] Skip ('#EXT-X-PROGRAM-DATE-TIME:2025-05-25T21:04:30.016Z')
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/0.ts' for reading
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1.ts' for reading
Input #0, hls, from 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/playlist.m3u8':
  Duration: 08:07:11.94, start: 64.171000, bitrate: 0 kb/s
  Program 0 
    Metadata:
      variant_bitrate : 0
  Stream #0:0: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 0
  Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 60 tbr, 90k tbn, 120 tbc
    Metadata:
      variant_bitrate : 0
  Stream #0:2: Data: timed_id3 (ID3  / 0x20334449)
    Metadata:
      variant_bitrate : 0
Output #0, mp4, to 'out.mp4':
  Metadata:
    encoder         : Lavf58.76.100
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 60 tbr, 90k tbn, 90k tbc
    Metadata:
      variant_bitrate : 0
  Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 0
Stream mapping:
  Stream #0:1 -> #0:0 (copy)
  Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1921.ts' for reading
[hls @ 0x633e19ea3200] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1922.ts' for reading
[https @ 0x633e1a43f9c0] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1923.ts' for reading
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1924.ts' for reading
[https @ 0x633e1a43f9c0] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1925.ts' for reading
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/1926.ts' for reading
...
...
...
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/2338.ts' for reading
[https @ 0x633e1a43f9c0] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/2339.ts' for reading
[https @ 0x633e1a877300] Opening 'https://stream.kick.com/ivs/v1/196233775518/hDSBAWziz2jA/2025/5/25/12/56/LrW3TwZUg7Xk/media/hls/1080p60/2340.ts' for reading
frame=    0 fps=0.0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


  


• FFmpeg : Encoder did not produce proper pts, making some up

  22 novembre 2022, par Chroluma

  I'm trying to convert a yuv image to jpg format via FFmpeg. But I occured [image2 @ 0x38750] Encoder did not produce proper pts, making some up. while the program was encoding. I looked up some references that someone said avcodec_send_frame can only be used when the frames is more than one. Can I use this way to achieve image conversion ? Here is my code :

  


  int ff_yuv422P_to_jpeg(int imgWidth, int imgHeight, uint8_t* yuvData, int yuvLength)
{
    /* ===== define ===== */
    const char* OutputFileName = "img.jpg";
    int retval = 0;

    /* ===== context ===== */
    struct AVFormatContext* pFormatCtx = avformat_alloc_context();
    avformat_alloc_output_context2(&pFormatCtx, NULL, NULL, OutputFileName);
    struct AVOutputFormat* fmt = pFormatCtx->oformat;

    struct AVStream* video_st = avformat_new_stream(pFormatCtx, 0);
    if (!video_st)
    {
        retval = 1;
        perror("ff_yuv422_to_jpeg(): avformat_new_stream");
        goto out_close_ctx;
    }

    /* ===== codec ===== */
    struct AVCodecContext* pCodecCtx = avcodec_alloc_context3(NULL);
    if (avcodec_parameters_to_context(pCodecCtx, video_st->codecpar) < 0)
    {
        retval = 2;
        perror("ff_yuv422_to_jpeg(): avcodec_parameters_to_context");
        goto out_close_ctx;
    }

    pCodecCtx->codec_id = fmt->video_codec;
    pCodecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
    pCodecCtx->pix_fmt = AV_PIX_FMT_YUVJ422P;
    pCodecCtx->width = imgWidth;
    pCodecCtx->height = imgHeight;
    pCodecCtx->time_base.num = 1;
    pCodecCtx->time_base.den = 25;

    //dump info
    av_dump_format(pFormatCtx, 0, OutputFileName, 1);

    struct AVCodec *pCodec = avcodec_find_encoder(pCodecCtx->codec_id);
    if (!pCodec)
    {
        retval = 3;
        perror("ff_yuv422_to_jpeg(): avcodec_find_encoder");
        goto out_close_st;
    }

    if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0)
    {
        retval = 4;
        perror("ff_yuv422_to_jpeg(): avcodec_open2");
        goto out_close_st;
    }

    /* ===== frame ===== */
    struct AVFrame* pictureFrame = av_frame_alloc();
    pictureFrame->width = pCodecCtx->width;
    pictureFrame->height = pCodecCtx->height;
    pictureFrame->format = AV_PIX_FMT_YUVJ422P;

    int picSize = av_image_get_buffer_size(AV_PIX_FMT_YUVJ422P, pCodecCtx->width, pCodecCtx->height, 1);
    uint8_t* pictureBuffer = (uint8_t*)av_malloc(picSize);
    av_image_fill_arrays(pictureFrame->data, pictureFrame->linesize, pictureBuffer, AV_PIX_FMT_YUVJ422P, pCodecCtx->width, pCodecCtx->height, 1);

    /* ===== write header ===== */
    int notUseRetVal = avformat_write_header(pFormatCtx, NULL);
    
    struct AVPacket* pkt = av_packet_alloc();
    av_new_packet(pkt, imgHeight * imgWidth * 3);
    pictureFrame->data[0] = pictureBuffer + 0 * (yuvLength / 4);
    pictureFrame->data[1] = pictureBuffer + 2 * (yuvLength / 4);
    pictureFrame->data[2] = pictureBuffer + 3 * (yuvLength / 4);

    /* ===== encode ===== */
    int ret = avcodec_send_frame(pCodecCtx, pictureFrame);
    while (ret >= 0)
    {
        pkt->stream_index = video_st->index;
        ret = avcodec_receive_packet(pCodecCtx, pkt);
        if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
        {
            retval = 5;
            perror("ff_yuv422_to_jpeg(): avcodec_receive_packet");
            goto out_close_picture;
        }
        else if (ret < 0)
        {
            retval = 6;
            perror("ff_yuv422_to_jpeg(): avcodec_receive_packet ret < 0");
            goto out_close_picture;
        }
        av_write_frame(pFormatCtx, pkt);
    }
    av_packet_unref(pkt);

    /* ===== write trailer ===== */
    av_write_trailer(pFormatCtx);

#if Print_Debug_Info
    printf("yuv2jpg Encode Success.\n");
#endif

out_close_picture:
    if (pictureFrame) av_free(pictureFrame);
    if (pictureBuffer) av_free(pictureBuffer);

out_close_st:
    // old school
    // if (video_st) avcodec_close(video_st->codec);

out_close_ctx:
    if (pFormatCtx) avformat_free_context(pFormatCtx);

out_return:
    return retval;
}


  


  and my log :

  


  Output #0, image2, to 'img.jpg':
    Stream #0:0: Unknown: none
[image2 @ 0x38750] Encoder did not produce proper pts, making some up.
ff_yuv422_to_jpeg(): avcodec_receive_packet: Success


  


  I looked up the avcodec_receive_packet()'s reference, and my code return error code AVERROR(EAGAIN).

  


• Senior Software Engineer to join Piwik Product Engineering team

  10 janvier 2015, par Matthieu Aubry — Jobs

  At Piwik and Piwik PRO we develop the leading open source web analytics platform, used by more than one million websites worldwide. Our vision is to help the world liberate their analytics data by building the best open alternative to Google Analytics.

  The Piwik platform collects, stores and processes a lot of information : hundreds of millions of data points each month. We create intuitive, simple and beautiful reports that delight our users.

  Are you seeking a new challenge ? We are currently looking for a full time Software Developer to join our small and dedicated Product Engineering team.

  At Piwik PRO we practise agile methodology, test driven development and fast release cycles. The main technologies we work with are PHP5, JavaScript (AngularJS, jQuery) and MySQL and our tools include PhpStorm, Github, Travis CI and Slack.

  As a Software Developer for Piwik PRO, you will be writing open source code that will directly benefit 250,000+ Piwik users in 200+ countries and 50 languages.

  Key Responsibilities

  • Writing server-side code (PHP 5) and front-end code (JavaScript).
  • Creating robust high-volume production applications and developing prototypes quickly.
  • Tackling new problems as we continue to push technology forward.
  • Assisting other developers by writing peer code reviews.
  • Improving and updating our platform developer guides.
  • Lead by example, able to self manage and use initiative to get things done.

  Minimum qualifications

  • Experience in product development, security, the open source philosophy and usable interface design.
  • Understanding of, and practical experience with PHP5 and JavaScript application development.
  • 3+ years experience building successful production software systems.
  • Solid knowledge of testing principles and OOP.
  • Strong analytical and coding skills.
  • Strong written communication.

  Location

  • Offices based in Wellington, New Zealand or Wrocław, Poland.
  • However remote work is also possible.

  Apply online

  To apply for this position, please Apply online here. We look forward to receiving your applications !