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• Bash script having custom functions not running under systemd service

  13 août, par nightcrawler

  I have this script to get images from a webcam & process them via RKNN NPU

  


  #!/bin/bash

# Define the temporary directory for images
TEMP_DIR="/media/32GB/pics"
# Define the resize/letterbox option
RESIZE_OPTION="letterbox"  # or "letterbox" depending on your requirement
# Define the output image path pattern
OUTPUT_IMAGE_PATH="/media/32GB/processed_pics/%Y-%m-%d_%H-%M-%S_processed.jpg"
# Define the path to the rknn_yolov5_demo_Linux binar
BINARY_PATH="$HOME/ezrknn-toolkit2/rknpu2/examples/rknn_yolov5_demo/install/rknn_yolov5_demo_Linux"
# Define ntfy variables
NTFY_URL="https://ntfy.org/ho"
NTFY_USER="xxx"
NTFY_PASS="xxxx"

# Empty existing content
rm "$TEMP_DIR"/*
# Function to run ffmpeg and write images to temporary files
run_ffmpeg() {
    v380 -u xxxx -p xxxx -addr 192.168.1.xxx | ffmpeg -i - -f image2 -vf fps=3 -strftime 1 "$TEMP_DIR/%Y-%m-%d_%H-%M-%S_cap.jpg" -y
}

# Function to run rknn_yolov5_demo_Linux and process images from temporary files
run_rknn_yolov5_demo() {
    while true; do
        # Find the most recent image file in the temporary directory
        IMAGE_PATH=$(ls -t "$TEMP_DIR"/*.jpg | head -n 1)

        # Check if the image path is not empty
        if [ -n "$IMAGE_PATH" ]; then
            # Define the output image path
            OUTPUT_IMAGE=$(date +"$OUTPUT_IMAGE_PATH")

            # Change to the binary directory and set LD_LIBRARY_PATH
            DETECTION_OUTPUT=$(cd "$BINARY_PATH" && LD_LIBRARY_PATH=./lib ./rknn_yolov5_demo ./model/RK3566_RK3568/yolov5s-640-640.rknn "$IMAGE_PATH" "$RESIZE_OPTION" "$OUTPUT_IMAGE")

            # Check if the detection output contains the word "person"
            if echo "$DETECTION_OUTPUT" | grep -q "person"; then
                echo "Human detected. Saving processed image to $OUTPUT_IMAGE"
                rm "$IMAGE_PATH"
                # Upload the image using the imgur binary and capture the link
                UPLOAD_OUTPUT=$(imgur "$OUTPUT_IMAGE")
                UPLOAD_LINK=$(echo "$UPLOAD_OUTPUT" | grep -m 1 '^http')

                if [ -n "$UPLOAD_LINK" ]; then
                    echo "Image uploaded successfully. Link: $UPLOAD_LINK"
                    # Send ntfy notification with the image link
                    curl -u $NTFY_USER:$NTFY_PASS -H "tags:rotating_light" -H "Attach:$UPLOAD_LINK" -d "Human detected" $NTFY_URL
                else
                    echo "Failed to upload image."
                fi
            else
                rm "$OUTPUT_IMAGE"
                rm "$IMAGE_PATH"
            fi
        fi

        # Sleep for a short period to avoid high CPU usage
        sleep 1
    done
}


# Run ffmpeg and rknn_yolov5_demo_Linux in the background
run_ffmpeg &
run_rknn_yolov5_demo &


  


  & the corresponding .service file

  


  [Unit]
Description=Process Images with rknn_yolov5_demo
After=network.target
#StartLimitIntervalSec=60
#StartLimitBurst=5

[Service]
Type=simple
ExecStartPre=/bin/sleep 30
ExecStart=/home/xxx/process_images_rknn.sh
Restart=always
RestartSec=3
TimeoutStartSec=60

[Install]
WantedBy=default.target


  


  Now last x2 lines of script are creating problems.

  


  Case1] If I keep like this htop shows no initiation of ffmpeg nor rknn Binaries

  


  Case2] I removed & from both lines then only ffmpeg runs but rknn is nowhere in htop

  


  Case3] Only this case works

  


  run_ffmpeg &
run_rknn_yolov5_demo


  


  I am reloading systemctl daemon & restarting service after script modification in each case

  


• How do I stop ffmpeg from spamming itself when I auto restart ?

  15 décembre 2019, par billy61300

  const fs = require("fs");
  
  const express = require("express");
  
  const app = express();
  
  const path = require("path");
  
  const ffmpeg = require("fluent-ffmpeg");
  
  const md5 = require("md5");
  
  const readline = require("readline");
  
  const formidable = require("formidable");
  
  
  
  const dir = "Custom/Dir";
  
  const thumb = __dirname + "/thumb";
  
  const ph = __dirname + "/placeholder";
  
  
  
  app.use("/serve", express.static(dir));
  
  app.use("/thumb", express.static(thumb));
  
  app.use("/ph", express.static(ph));
  
  
  
  const list = [];
  
  const listThumb = [];
  
  
  
  process.on("uncaughtException", (err) => {
  
      console.log("Caught Exception: " + err);
  
  });
  
  
  
  let passwords = fs.readFileSync("passwords.txt").toString().split("\n");
  
  
  
  app.get("/", (req, res) => {
  
      res.sendFile(__dirname + "/index.html")
  
  });
  
  
  
  app.get("/upload", (req, res) => {
  
      res.sendFile(__dirname + "/upload.html");
  
  });
  
  
  
  app.post("/uploadFile", (req, res) => {
  
      let form = new formidable.IncomingForm();
  
      form.parse(req, (err, fields, files) => {
  
          if (passwords.includes(md5(fields.password))) {
  
              fs.readFile(files.filetoupload.path, (err, data) => {
  
                  let newPath = dir + "/" + files.filetoupload.name;
  
                  if (!fs.existsSync(newPath)) {
  
                      fs.writeFile(newPath, data, (err) => {
  
                          res.writeHead(200, {"Content-Type": "text/html"});
  
                          res.write("<h1>File Uploaded</h1>");
  
                          res.end();
  
                      });
  
                  } else {
  
                      res.writeHead(200, {"Content-Type": "text/html"});
  
                      res.write("<h1>File already exists. Upload with a different name please.</h1>");
  
                      res.end();
  
                  }
  
              });
  
          }
  
      });
  
  });
  
  
  
  fs.readdir(dir, (err, files) => {
  
      if (err) {
  
          throw err;
  
      } else {
  
          let i = 0;
  
          files.forEach((file) => {
  
              list[i] = path.basename(file);
  
              if (!fs.existsSync(__dirname + "\\thumb\\" + list[i] + ".png")) {
  
                  console.log("Generating: " + list[i] + ".png");
  
                  let proc = new ffmpeg({source: dir + "/" + file, nolog: true});
  
                  proc.setFfmpegPath(__dirname + "\\ffmpeg.exe");
  
                  proc.screenshots({
  
                      timestamps: [0.0],
  
                      filename: list[i] + ".png",
  
                      folder: __dirname + "\\thumb\\",
  
                      size: "100x100"
  
                  });
  
              }
  
              i++;
  
          });
  
          let serveDoc = "";
  
          for (let j = 0; j &lt; list.length; j++) {
  
              if (path.extname(list[j]).toLowerCase() !== ".jpg" &amp;&amp; path.extname(list[j]).toLowerCase() !== ".jpeg" &amp;&amp; path.extname(list[j]).toLowerCase() !== ".png") {
  
                  if (path.extname(list[j]).toLowerCase() == ".mp3" || path.extname(list[j]).toLowerCase() == ".wav") {
  
                      serveDoc += "<a href="http://stackoverflow.com/feeds/tag/address&#034; + list[j] + &#034;">" + "<img width='100' height='100' src="http://stackoverflow.com/feeds/tag/address" />" + "</a> ";;
  
                  }/* else if (path.extname(list[j]).toLowerCase() == ".webm") {
  
                      serveDoc += "<a href="http://stackoverflow.com/feeds/tag/address&#034; + list[j] + &#034;">" + "<img width='100' height='100' src="http://stackoverflow.com/feeds/tag/address" />" + "</a> ";;
  
                  }*/ else {
  
                      serveDoc += "<a href="http://stackoverflow.com/feeds/tag/address&#034; + list[j] + &#034;">" + "<img width='100' height='100' src="http://stackoverflow.com/feeds/tag/address&#034; + list[j] + &#034;.png" />" + "</a> ";
  
                  }
  
              } else {
  
                  serveDoc += "<a href="http://stackoverflow.com/feeds/tag/address&#034; + list[j] + &#034;">" + "<img width='100' height='100' src="http://stackoverflow.com/feeds/tag/address&#034; + list[j] + &#034;" />" + "</a> ";
  
              }
  
          }
  
          serveDoc += "";
  
          fs.writeFile("index.html", serveDoc, (err) => {
  
              if (err) throw err;
  
          });
  
      }
  
  });
  
  
  
  setTimeout(() => {
  
      process.exit(0);
  
  }, 1000 * 60 * 30);
  
  
  
  app.listen(80, (err) => {
  
      if (err) {
  
          throw err;
  
      } else {
  
          console.log("Listening on port 80.");
  
      }
  
  });

  Issue is that the program needs to be restarted every X minutes so that the list of media will update on it’s own. However, upon a restart, ffmpeg goes crazy and starts to spam a batch window under it’s name repeatedly over and over again without stopping. The only way out of it is to restart my computer.

  I’ve tried to use PM2, Forever, Supervisor. Nodemon afaik won’t auto restart.

• How do I make my discord bot play music by using youtubedl's search function instead of url ? (Python)

  28 septembre 2021, par PypypieYum

  I want it to search for the video and play it, how can i change the following code to achieve that ? Every time I use the ytsearch function in ytdl, I notice that it only searches for the first word of the title and download it, however, it causes error later on and do nothing.

  


  @commands.command()
    async def play(self, ctx, url):
        if ctx.author.voice is None:
            await ctx.send("You are not in a voice channel!")
        voice_channel = ctx.author.voice.channel
        if ctx.voice_client is None:
            await voice_channel.connect()
        else:
            await ctx.voice_client.move_to(voice_channel)

        ctx.voice_client.stop()
        FFMPEG_OPTIONS = {'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}
        YDL_OPTIONS = {'format':"bestaudio", 'default_search':"ytsearch"}
        vc = ctx.voice_client

        with youtube_dl.YoutubeDL(YDL_OPTIONS) as ydl:
            info = ydl.extract_info(url, download=False)
            if 'entries' in info:
              url2 = info["entries"][0]["formats"][0]
            elif 'formats' in info:
              url2 = info["formats"][0]['url']
            source = await discord.FFmpegOpusAudio.from_probe(url2, **FFMPEG_OPTIONS)
            vc.play(source)


  


  And this is the error message :

  


  Ignoring exception in command play:
Traceback (most recent call last):
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "/home/runner/HandmadeLivelyLines/music.py", line 44, in play
    source = await discord.FFmpegOpusAudio.from_probe(url2, **FFMPEG_OPTIONS)
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/player.py", line 387, in from_probe
    return cls(source, bitrate=bitrate, codec=codec, **kwargs)
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/player.py", line 324, in __init__
    super().__init__(source, executable=executable, args=args, **subprocess_kwargs)
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/player.py", line 138, in __init__
    self._process = self._spawn_process(args, **kwargs)
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/player.py", line 144, in _spawn_process
    process = subprocess.Popen(args, creationflags=CREATE_NO_WINDOW, **subprocess_kwargs)
  File "/usr/lib/python3.8/subprocess.py", line 858, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.8/subprocess.py", line 1639, in _execute_child
    self.pid = _posixsubprocess.fork_exec(
TypeError: expected str, bytes or os.PathLike object, not dict

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/bot.py", line 939, in invoke
    await ctx.command.invoke(ctx)
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 863, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/ext/commands/core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: TypeError: expected str, bytes or os.PathLike object, not dict


  


  Thanks.