Recherche avancée

Sur d’autres sites (6843)

• FFMPEG. Read frame, process it, put it to output video. Copy sound stream unchanged

  9 décembre 2016, par Andrey Smorodov

  I want to apply processing to a video clip with sound track, extract and process frame by frame and write result to output file. Number of frames, size of frame and speed remains unchanged in output clip. Also I want to keep the same audio track as I have in source.

  I can read clip, decode frames and process then using opencv. Audio packets are also writes fine. I’m stuck on forming output video stream.

  The minimal runnable code I have for now (sorry it not so short, but cant do it shorter) :

  extern "C" {
  
  #include <libavutil></libavutil>timestamp.h>
  
  #include <libavformat></libavformat>avformat.h>
  
  #include "libavcodec/avcodec.h"
  
  #include <libavutil></libavutil>opt.h>
  
  #include <libavdevice></libavdevice>avdevice.h>
  
  #include <libswscale></libswscale>swscale.h>
  
  }
  
  #include "opencv2/opencv.hpp"
  
  
  
  #if LIBAVCODEC_VERSION_INT &lt; AV_VERSION_INT(55,28,1)
  
  #define av_frame_alloc  avcodec_alloc_frame
  
  #endif
  
  
  
  using namespace std;
  
  using namespace cv;
  
  
  
  static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt, const char *tag)
  
  {
  
      AVRational *time_base = &amp;fmt_ctx->streams[pkt->stream_index]->time_base;
  
  
  
      char buf1[AV_TS_MAX_STRING_SIZE] = { 0 };
  
      av_ts_make_string(buf1, pkt->pts);
  
      char buf2[AV_TS_MAX_STRING_SIZE] = { 0 };
  
      av_ts_make_string(buf1, pkt->dts);
  
      char buf3[AV_TS_MAX_STRING_SIZE] = { 0 };
  
      av_ts_make_string(buf1, pkt->duration);
  
  
  
      char buf4[AV_TS_MAX_STRING_SIZE] = { 0 };
  
      av_ts_make_time_string(buf1, pkt->pts, time_base);
  
      char buf5[AV_TS_MAX_STRING_SIZE] = { 0 };
  
      av_ts_make_time_string(buf1, pkt->dts, time_base);
  
      char buf6[AV_TS_MAX_STRING_SIZE] = { 0 };
  
      av_ts_make_time_string(buf1, pkt->duration, time_base);
  
  
  
      printf("pts:%s pts_time:%s dts:%s dts_time:%s duration:%s duration_time:%s stream_index:%d\n",
  
          buf1, buf4,
  
          buf2, buf5,
  
          buf3, buf6,
  
          pkt->stream_index);
  
  
  
  }
  
  
  
  
  
  int main(int argc, char **argv)
  
  {
  
      AVOutputFormat *ofmt = NULL;
  
      AVFormatContext *ifmt_ctx = NULL, *ofmt_ctx = NULL;
  
      AVPacket pkt;
  
      AVFrame *pFrame = NULL;
  
      AVFrame *pFrameRGB = NULL;
  
      int frameFinished = 0;
  
      pFrame = av_frame_alloc();
  
      pFrameRGB = av_frame_alloc();
  
  
  
      const char *in_filename, *out_filename;
  
      int ret, i;
  
      in_filename = "../../TestClips/Audio Video Sync Test.mp4";
  
      out_filename = "out.mp4";
  
  
  
      // Initialize FFMPEG
  
      av_register_all();
  
      // Get input file format context
  
      if ((ret = avformat_open_input(&amp;ifmt_ctx, in_filename, 0, 0)) &lt; 0)
  
      {
  
          fprintf(stderr, "Could not open input file '%s'", in_filename);
  
          goto end;
  
      }
  
      // Extract streams description
  
      if ((ret = avformat_find_stream_info(ifmt_ctx, 0)) &lt; 0)
  
      {
  
          fprintf(stderr, "Failed to retrieve input stream information");
  
          goto end;
  
      }
  
      // Print detailed information about the input or output format,
  
      // such as duration, bitrate, streams, container, programs, metadata, side data, codec and time base.
  
      av_dump_format(ifmt_ctx, 0, in_filename, 0);
  
  
  
      // Allocate an AVFormatContext for an output format.
  
      avformat_alloc_output_context2(&amp;ofmt_ctx, NULL, NULL, out_filename);
  
      if (!ofmt_ctx)
  
      {
  
          fprintf(stderr, "Could not create output context\n");
  
          ret = AVERROR_UNKNOWN;
  
          goto end;
  
      }
  
  
  
      // The output container format.
  
      ofmt = ofmt_ctx->oformat;
  
  
  
      // Allocating output streams
  
      for (i = 0; i &lt; ifmt_ctx->nb_streams; i++)
  
      {
  
          AVStream *in_stream = ifmt_ctx->streams[i];
  
          AVStream *out_stream = avformat_new_stream(ofmt_ctx, in_stream->codec->codec);
  
          if (!out_stream)
  
          {
  
              fprintf(stderr, "Failed allocating output stream\n");
  
              ret = AVERROR_UNKNOWN;
  
              goto end;
  
          }
  
          ret = avcodec_copy_context(out_stream->codec, in_stream->codec);
  
          if (ret &lt; 0)
  
          {
  
              fprintf(stderr, "Failed to copy context from input to output stream codec context\n");
  
              goto end;
  
          }
  
          out_stream->codec->codec_tag = 0;
  
          if (ofmt_ctx->oformat->flags &amp; AVFMT_GLOBALHEADER)
  
          {
  
              out_stream->codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
  
          }
  
      }
  
  
  
      // Show output format info
  
      av_dump_format(ofmt_ctx, 0, out_filename, 1);
  
  
  
      // Open output file
  
      if (!(ofmt->flags &amp; AVFMT_NOFILE))
  
      {
  
          ret = avio_open(&amp;ofmt_ctx->pb, out_filename, AVIO_FLAG_WRITE);
  
          if (ret &lt; 0)
  
          {
  
              fprintf(stderr, "Could not open output file '%s'", out_filename);
  
              goto end;
  
          }
  
      }
  
      // Write output file header
  
      ret = avformat_write_header(ofmt_ctx, NULL);
  
      if (ret &lt; 0)
  
      {
  
          fprintf(stderr, "Error occurred when opening output file\n");
  
          goto end;
  
      }
  
  
  
      // Search for input video codec info
  
      AVCodec *in_codec = nullptr;
  
      AVCodecContext* avctx = nullptr;
  
  
  
      int video_stream_index = -1;
  
      for (int i = 0; i &lt; ifmt_ctx->nb_streams; i++)
  
      {
  
          if (ifmt_ctx->streams[i]->codec->coder_type == AVMEDIA_TYPE_VIDEO)
  
          {
  
              video_stream_index = i;
  
              avctx = ifmt_ctx->streams[i]->codec;
  
              in_codec = avcodec_find_decoder(avctx->codec_id);
  
              if (!in_codec)
  
              {
  
                  fprintf(stderr, "in codec not found\n");
  
                  exit(1);
  
              }
  
              break;
  
          }
  
      }
  
  
  
      // Search for output video codec info
  
      AVCodec *out_codec = nullptr;
  
      AVCodecContext* o_avctx = nullptr;
  
  
  
      int o_video_stream_index = -1;
  
      for (int i = 0; i &lt; ofmt_ctx->nb_streams; i++)
  
      {
  
          if (ofmt_ctx->streams[i]->codec->coder_type == AVMEDIA_TYPE_VIDEO)
  
          {
  
              o_video_stream_index = i;
  
              o_avctx = ofmt_ctx->streams[i]->codec;
  
              out_codec = avcodec_find_encoder(o_avctx->codec_id);
  
              if (!out_codec)
  
              {
  
                  fprintf(stderr, "out codec not found\n");
  
                  exit(1);
  
              }
  
              break;
  
          }
  
      }
  
  
  
      // openCV pixel format
  
      AVPixelFormat pFormat = AV_PIX_FMT_RGB24;
  
      // Data size
  
      int numBytes = avpicture_get_size(pFormat, avctx->width, avctx->height);
  
      // allocate buffer 
  
      uint8_t *buffer = (uint8_t *)av_malloc(numBytes * sizeof(uint8_t));
  
      // fill frame structure
  
      avpicture_fill((AVPicture *)pFrameRGB, buffer, pFormat, avctx->width, avctx->height);
  
      // frame area
  
      int y_size = avctx->width * avctx->height;
  
      // Open input codec
  
      avcodec_open2(avctx, in_codec, NULL);
  
      // Main loop
  
      while (1)
  
      {
  
          AVStream *in_stream, *out_stream;
  
          ret = av_read_frame(ifmt_ctx, &amp;pkt);
  
          if (ret &lt; 0)
  
          {
  
              break;
  
          }
  
          in_stream = ifmt_ctx->streams[pkt.stream_index];
  
          out_stream = ofmt_ctx->streams[pkt.stream_index];
  
          log_packet(ifmt_ctx, &amp;pkt, "in");
  
          // copy packet 
  
          pkt.pts = av_rescale_q_rnd(pkt.pts, in_stream->time_base, out_stream->time_base, AVRounding(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
  
          pkt.dts = av_rescale_q_rnd(pkt.dts, in_stream->time_base, out_stream->time_base, AVRounding(AV_ROUND_NEAR_INF | AV_ROUND_PASS_MINMAX));
  
          pkt.duration = av_rescale_q(pkt.duration, in_stream->time_base, out_stream->time_base);
  
          pkt.pos = -1;
  
  
  
          log_packet(ofmt_ctx, &amp;pkt, "out");
  
          if (pkt.stream_index == video_stream_index)
  
          {
  
              avcodec_decode_video2(avctx, pFrame, &amp;frameFinished, &amp;pkt);
  
              if (frameFinished)
  
              {
  
                  struct SwsContext *img_convert_ctx;
  
                  img_convert_ctx = sws_getCachedContext(NULL,
  
                      avctx->width,
  
                      avctx->height,
  
                      avctx->pix_fmt,
  
                      avctx->width,
  
                      avctx->height,
  
                      AV_PIX_FMT_BGR24,
  
                      SWS_BICUBIC,
  
                      NULL,
  
                      NULL,
  
                      NULL);
  
                  sws_scale(img_convert_ctx,
  
                      ((AVPicture*)pFrame)->data,
  
                      ((AVPicture*)pFrame)->linesize,
  
                      0,
  
                      avctx->height,
  
                      ((AVPicture *)pFrameRGB)->data,
  
                      ((AVPicture *)pFrameRGB)->linesize);
  
  
  
                  sws_freeContext(img_convert_ctx);
  
  
  
                  // Do some image processing
  
                  cv::Mat img(pFrame->height, pFrame->width, CV_8UC3, pFrameRGB->data[0],false);
  
                  cv::GaussianBlur(img,img,Size(5,5),3);
  
                  cv::imshow("Display", img);
  
                  cv::waitKey(5);
  
                  // --------------------------------
  
                  // Transform back to initial format
  
                  // --------------------------------
  
                  img_convert_ctx = sws_getCachedContext(NULL,
  
                      avctx->width,
  
                      avctx->height,
  
                      AV_PIX_FMT_BGR24,
  
                      avctx->width,
  
                      avctx->height,
  
                      avctx->pix_fmt,
  
                      SWS_BICUBIC,
  
                      NULL,
  
                      NULL,
  
                      NULL);
  
                  sws_scale(img_convert_ctx,
  
                      ((AVPicture*)pFrameRGB)->data,
  
                      ((AVPicture*)pFrameRGB)->linesize,
  
                      0,
  
                      avctx->height,
  
                      ((AVPicture *)pFrame)->data,
  
                      ((AVPicture *)pFrame)->linesize);
  
                      // --------------------------------------------
  
                      // Something must be here
  
                      // --------------------------------------------
  
                      //
  
                      // Write fideo frame (How to write frame to output stream ?)
  
                      //
  
                      // --------------------------------------------
  
                       sws_freeContext(img_convert_ctx);
  
              }
  
  
  
          }
  
          else // write sound frame
  
          {
  
              ret = av_interleaved_write_frame(ofmt_ctx, &amp;pkt);
  
          }
  
          if (ret &lt; 0)
  
          {
  
              fprintf(stderr, "Error muxing packet\n");
  
              break;
  
          }
  
          // Decrease packet ref counter
  
          av_packet_unref(&amp;pkt);
  
      }
  
      av_write_trailer(ofmt_ctx);
  
  end:
  
      avformat_close_input(&amp;ifmt_ctx);
  
      // close output 
  
      if (ofmt_ctx &amp;&amp; !(ofmt->flags &amp; AVFMT_NOFILE))
  
      {
  
          avio_closep(&amp;ofmt_ctx->pb);
  
      }
  
      avformat_free_context(ofmt_ctx);
  
      if (ret &lt; 0 &amp;&amp; ret != AVERROR_EOF)
  
      {
  
          char buf_err[AV_ERROR_MAX_STRING_SIZE] = { 0 };
  
          av_make_error_string(buf_err, AV_ERROR_MAX_STRING_SIZE, ret);
  
          fprintf(stderr, "Error occurred: %s\n", buf_err);
  
          return 1;
  
      }
  
  
  
      avcodec_close(avctx);
  
      av_free(pFrame);
  
      av_free(pFrameRGB);
  
  
  
      return 0;
  
  }

• Fun With Tablets And Amazon’s App Store

  24 décembre 2011, par Multimedia Mike — General, amazon, android, app store, cyanogenmod, ios, smurfs, tablet

  I bought an Android tablet a few months ago. It is less expensive than the best tablets but no where near the bottom end of the market. I think it’s pretty good. However, one downside is that it’s not “certified” to use Google’s official marketplace. That would seem to be somewhat limiting, however…

  Enter Amazon’s Android App Store
  Amazon got into the business of selling Android Apps some time ago. I started experimenting with this on a Nexus One phone that Google gave me. When I installed the App Store on the Android tablet and logged in, I was pleasantly surprised to see all of my Amazon apps ready for downloading onto the tablet.

  So I have an App Store for use with this Android tablet.

  Anyway, the reason I bring this up is because I managed to screw up this tablet in an unusual and humorous manner. You might be wondering if an app downloaded from the Amazon App Store requires the App Store to be present in order to run. The answer is : Oh yeah ! It works like this :

  
  
  

  This means that if — perhaps out of curiosity, for example — you login to the Amazon App Store, download an app, install it, and then subsequently log out of the App Store or uninstall it altogether, the downloaded app will decline to run until you log back into the store.

  Here’s the thing– I wanted to provide a minimal level of security for my Android tablet. At the very least, I wished to lock the Amazon App Store itself since Amazon is famously (and, let’s face it, understandably) reluctant to deliberately add any friction to their shopping processes. I.e., without any external protection app, the App Store app would allow anyone to purchase any app using my tablet.

  So I purchased App Protector Pro from the Amazon App Store and it worked quite well. By default, it also password protects against modifying any system settings as well as installing new apps.

  So, here’s where I screwed up : App Protector Pro was doing its faithful duty and I uninstalled the Amazon App Store as an experiment. Suddenly, no apps obtained from the App Store would work unless I reinstalled the App Store. Okay, fair enough, except for one thing– App Protector Pro wouldn’t run without the App Store. Well, it did, it started to, tried to, but then exited. So I couldn’t re-install the App Store :

  
  
  Oops
  

  I eventually learned how to perform a factory reset of the unit which solved the problem. And, as indicated earlier, all of my apps were available for me to re-download.

  Modding, Cyanogen-style
  Open source aficionados will likely point out that there are alternate firmware options which allow me to take control of my Android tablet in a free and open manner. Among these options is CyanogenMod. After I got stuck in the situation described above, I thought I would have to resort to such an option.

  On the plus side, researching alternative firmware options is what taught me to boot the device into a recovery mode and ultimately restore to a factory default setting. But if you’ll allow me to indulge in a mini-rant regarding accessibility of open source software : I was more than a little frustrated in trying to understand what CyanogenMod could possibly offer me. Their homepage says it’s “an aftermarket firmware”. I’m not entirely sure what that means or how it can benefit me. Fortunately, they have a full feature list linked from the front page. They are, in order : Lockscreen gestures, phone goggles, OpenVPN, incognito mode, themes support, and DSP equalizer. I can’t say that any of those really add any value for me. I’d love to know if CyanogenMod supports Google Android Market and various other Google apps (such as maps and GMail). That’s a question that I can’t seem to find the answer to.

  The themes feature opens another old wound for me. Back around 1999 when I was first getting into Linux in a serious way, I remember that themes were a big theme at the Linux User Groups I would attend. I also remember lots are online articles at the time that emphasized how highly customizable the Linux desktop was in comparison to Windows 9x. I was bothered for 2 reasons : First, I thought there were more pressing problems that needed to be addressed in Linux ; and second, none of these customization options seemed particularly straightforward ; many apparently required hours of compiling and tinkering.

  Small digression. Anyway, back to CyanogenMod, I was glad to see that they prominently display a button in order to “View Video Tour”. Ah, internet video has us so spoiled these days. I was eager to see this aftermarket firmware in action to see what it could do for me. However, the link leads to… a forum post ? The thread seems to discuss how it would be a cool idea if the community could put together a video tour. At this point, the investigation just seems bizarre. It feels like a bunch of kids doing their best to do things the grown-up way.

  Okay, sorry, rant over. I try to stay positive these days. I’m sure the CyanogenMod folks are doing great, fun, and interesting work on their project. The problems they choose to solve might lack mainstream appeal, however.

  Free iPad
  Ultimately, I recently unloaded the little Android tablet because, well… when a free iPad comes your way, lower spec tablets feel a little silly to keep around. Yeah, it’s great to play around with. Though here’s one unsettling thing I noticed about Apple’s App Store. While browsing for worthwhile games to indulge in, I noticed that they had a section for “Top Grossing Games”. This was a separate list from the “Top Apps” charts. I found the list weird for 2 reasons : 1) Why do I care which games are raking in the most cash ? How does this communicate value to me, personally ? Seriously, why would I base a purchasing decision around which vendor has earned the most money ?

  Anyway, let’s move on to reason #2 this was scary : Most of the games in this list had a price of FREE. One of them was that Capcom Smurfs game that stirred up controversy some months ago because of kids making unsupervised in-app purchases of virtual smurfberries. I tend to think that a top-grossing, free to play game is probably one that heavily encourages in-app purchases. Strange how this emerging trend actually encourages me to seek out games from the “top paid” list vs. “top free”.

• FFmpeg RTSP drop rate increases when frame rate is reduced

  13 avril 2024, par Avishka Perera

  I need to read an RTSP stream, process the images individually in Python, and then write the images back to an RTSP stream. As the RTSP server, I am using Mediamtx [1]. For streaming, I am using FFmpeg [2].

  


  I have the following code that works perfectly fine. For simplification purposes, I am streaming three generated images.

  


  import time
import numpy as np
import subprocess

width, height = 640, 480
fps = 25
rtsp_server_address = f"rtsp://localhost:8554/mystream"

ffmpeg_cmd = [
    "ffmpeg",
    "-re",
    "-f",
    "rawvideo",
    "-pix_fmt",
    "rgb24",
    "-s",
    f"{width}x{height}",
    "-i",
    "-",
    "-r",
    str(fps),
    "-avoid_negative_ts",
    "make_zero",
    "-vcodec",
    "libx264",
    "-threads",
    "4",
    "-f",
    "rtsp",
    rtsp_server_address,
]
colors = np.array(
    [
        [255, 0, 0],
        [0, 255, 0],
        [0, 0, 255],
    ]
).reshape(3, 1, 1, 3)
images = (np.ones((3, width, height, 3)) * colors).astype(np.uint8)

if __name__ == "__main__":

    process = subprocess.Popen(ffmpeg_cmd, stdin=subprocess.PIPE)
    start = time.time()
    exported = 0
    while True:
        exported += 1
        next_time = start + exported / fps
        now = time.time()
        if next_time > now:
            sleep_dur = next_time - now
            time.sleep(sleep_dur)

        image = images[exported % 3]
        image_bytes = image.tobytes()

        process.stdin.write(image_bytes)
        process.stdin.flush()

    process.stdin.close()
    process.wait()


  


  The issue is, that I need to run this at 10 fps because the processing step is heavy and can only afford 10 fps. Hence, as I reduce the frame rate from 25 to 10, the drop rate increases from 0% to 100%. And after a few iterations, I get a BrokenPipeError: [Errno 32] Broken pipe. Refer to the appendix for the complete log.

  


  As an alternative, I can use OpenCV compiled from source with GStreamer [3], but I prefer using FFmpeg to make the shipping process simple. Since compiling OpenCV from source can be tedious and dependent on the system.

  


  References

  


  [1] Mediamtx (formerly rtsp-simple-server) : https://github.com/bluenviron/mediamtx

  


  [2] FFmpeg : https://github.com/FFmpeg/FFmpeg

  


  [3] Compile OpenCV with GStreamer : https://github.com/bluenviron/mediamtx?tab=readme-ov-file#opencv

  


  Appendix

  


  Creating the source stream

  


  To instantiate the unprocessed stream, I use the following command. This streams the content of my webcam as and RTSP stream.

  


  ffmpeg -video_size 1280x720 -i /dev/video0  -avoid_negative_ts make_zero -vcodec libx264 -r 10 -f rtsp rtsp://localhost:8554/webcam


  


  Error log

  


  ffmpeg version 6.1.1 Copyright (c) 2000-2023 the FFmpeg developers&#xA;  built with gcc 12.3.0 (conda-forge gcc 12.3.0-5)&#xA;  configuration: --prefix=/home/conda/feedstock_root/build_artifacts/ffmpeg_1712656518955/_h_env_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_placehold_plac --cc=/home/conda/feedstock_root/build_artifacts/ffmpeg_1712656518955/_build_env/bin/x86_64-conda-linux-gnu-cc --cxx=/home/conda/feedstock_root/build_artifacts/ffmpeg_1712656518955/_build_env/bin/x86_64-conda-linux-gnu-c&#x2B;&#x2B; --nm=/home/conda/feedstock_root/build_artifacts/ffmpeg_1712656518955/_build_env/bin/x86_64-conda-linux-gnu-nm --ar=/home/conda/feedstock_root/build_artifacts/ffmpeg_1712656518955/_build_env/bin/x86_64-conda-linux-gnu-ar --disable-doc --disable-openssl --enable-demuxer=dash --enable-hardcoded-tables --enable-libfreetype --enable-libharfbuzz --enable-libfontconfig --enable-libopenh264 --enable-libdav1d --enable-gnutls --enable-libmp3lame --enable-libvpx --enable-libass --enable-pthreads --enable-vaapi --enable-libopenvino --enable-gpl --enable-libx264 --enable-libx265 --enable-libaom --enable-libsvtav1 --enable-libxml2 --enable-pic --enable-shared --disable-static --enable-version3 --enable-zlib --enable-libopus --pkg-config=/home/conda/feedstock_root/build_artifacts/ffmpeg_1712656518955/_build_env/bin/pkg-config&#xA;  libavutil      58. 29.100 / 58. 29.100&#xA;  libavcodec     60. 31.102 / 60. 31.102&#xA;  libavformat    60. 16.100 / 60. 16.100&#xA;  libavdevice    60.  3.100 / 60.  3.100&#xA;  libavfilter     9. 12.100 /  9. 12.100&#xA;  libswscale      7.  5.100 /  7.  5.100&#xA;  libswresample   4. 12.100 /  4. 12.100&#xA;  libpostproc    57.  3.100 / 57.  3.100&#xA;Input #0, rawvideo, from &#x27;fd:&#x27;:&#xA;  Duration: N/A, start: 0.000000, bitrate: 184320 kb/s&#xA;  Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 640x480, 184320 kb/s, 25 tbr, 25 tbn&#xA;Stream mapping:&#xA;  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))&#xA;[libx264 @ 0x5e2ef8b01340] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2&#xA;[libx264 @ 0x5e2ef8b01340] profile High 4:4:4 Predictive, level 2.2, 4:4:4, 8-bit&#xA;[libx264 @ 0x5e2ef8b01340] 264 - core 164 r3095 baee400 - H.264/MPEG-4 AVC codec - Copyleft 2003-2022 - 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=4 threads=4 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=10 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&#xA;Output #0, rtsp, to &#x27;rtsp://localhost:8554/mystream&#x27;:&#xA;  Metadata:&#xA;    encoder         : Lavf60.16.100&#xA;  Stream #0:0: Video: h264, yuv444p(tv, progressive), 640x480, q=2-31, 10 fps, 90k tbn&#xA;    Metadata:&#xA;      encoder         : Lavc60.31.102 libx264&#xA;    Side data:&#xA;      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A&#xA;[vost#0:0/libx264 @ 0x5e2ef8b01080] Error submitting a packet to the muxer: Broken pipe   &#xA;[out#0/rtsp @ 0x5e2ef8afd780] Error muxing a packet&#xA;[out#0/rtsp @ 0x5e2ef8afd780] video:1kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown&#xA;frame=    1 fps=0.1 q=-1.0 Lsize=N/A time=00:00:04.70 bitrate=N/A dup=0 drop=70 speed=0.389x    &#xA;[libx264 @ 0x5e2ef8b01340] frame I:16    Avg QP: 6.00  size:   147&#xA;[libx264 @ 0x5e2ef8b01340] frame P:17    Avg QP: 9.94  size:   101&#xA;[libx264 @ 0x5e2ef8b01340] frame B:17    Avg QP: 9.94  size:    64&#xA;[libx264 @ 0x5e2ef8b01340] consecutive B-frames: 50.0%  0.0% 42.0%  8.0%&#xA;[libx264 @ 0x5e2ef8b01340] mb I  I16..4: 81.3% 18.7%  0.0%&#xA;[libx264 @ 0x5e2ef8b01340] mb P  I16..4: 52.9%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:47.1%&#xA;[libx264 @ 0x5e2ef8b01340] mb B  I16..4:  0.0%  5.9%  0.0%  B16..8:  0.1%  0.0%  0.0%  direct: 0.0%  skip:94.0%  L0:56.2% L1:43.8% BI: 0.0%&#xA;[libx264 @ 0x5e2ef8b01340] 8x8 transform intra:15.4% inter:100.0%&#xA;[libx264 @ 0x5e2ef8b01340] coded y,u,v intra: 0.0% 0.0% 0.0% inter: 0.0% 0.0% 0.0%&#xA;[libx264 @ 0x5e2ef8b01340] i16 v,h,dc,p: 97%  0%  3%  0%&#xA;[libx264 @ 0x5e2ef8b01340] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  0%  0% 100%  0%  0%  0%  0%  0%  0%&#xA;[libx264 @ 0x5e2ef8b01340] Weighted P-Frames: Y:52.9% UV:52.9%&#xA;[libx264 @ 0x5e2ef8b01340] ref P L0: 88.9%  0.0%  0.0% 11.1%&#xA;[libx264 @ 0x5e2ef8b01340] kb/s:8.27&#xA;Conversion failed!&#xA;Traceback (most recent call last):&#xA;  File "/home/avishka/projects/read-process-stream/minimal-ffmpeg-error.py", line 58, in <module>&#xA;    process.stdin.write(image_bytes)&#xA;BrokenPipeError: [Errno 32] Broken pipe&#xA;</module>