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• ffmpeg command never work in lambda function using nodejs [closed]

  4 décembre 2022, par Santosh swain

  I am trying to implement FFmpeg video streaming functionality such as Instagram countdown functionality. In this code, first of all, I get records(URLs) from the s3 bucket and then split them according to my need, and then create the command and execute it with exec() belonging to childe_process. in this, I am trying to store the out in some specific folder in lambda function but it was never stored. I thought lambda does allow to write files locally so I am trying to do the direct upload on the s3 bucket by using the stdout parameter of exec()'s callback. guys, please help to do that. I have a question lambda does allow to write content in its local folder ? or if not allow then whats the way to do that thing ? I just share my code please guide me.

  


  
    // dependencies
var AWS = require('aws-sdk');
var s3 = new AWS.S3();
var { exec } = require('child_process');
var path = require('path')
var AWS_ACCESS_KEY = '';
var AWS_SECRET_ACCESS_KEY = '';
var fs = require('fs')

s3 = new AWS.S3({
    accessKeyId: AWS_ACCESS_KEY,
    secretAccessKey: AWS_SECRET_ACCESS_KEY
});

exports.handler = async function (event, context) {

    var bucket_name = "sycu-game";
    var bucketName = "sycu-test";

    //CREATE OVERLAY AND BG_VALUE PATH TO GET VALUE FROM S3
    const bgValue = (event.Records[0].bg_value).split('/');
    const overlayImage = (event.Records[0].overlay_image_url).split('/');


    var s3_bg_value = bgValue[3] + "/" + bgValue[4];
    var s3_overlay_image = overlayImage[4] + "/" + overlayImage[5] + "/" + overlayImage[6];
    const signedUrlExpireSeconds = 60 * 5;


    //RETREIVE BG_VALUE FROM S3 AND CREATE URL FOR FFMPEG INPUT VALUE
    var bg_value_url = s3.getSignedUrl('getObject', {
        Bucket: bucket_name,
        Key: s3_bg_value,
        Expires: signedUrlExpireSeconds
    });
    bg_value_url = bg_value_url.split("?");
    bg_value_url = bg_value_url[0];


    //RETREIVE OVERLAY IMAGE FROM S3 AND CREATE URL FOR FFMPEG INPUT VALUE   
    var overlay_image_url = s3.getSignedUrl('getObject', {
        Bucket: bucket_name,
        Key: s3_overlay_image,
        Expires: signedUrlExpireSeconds
    });
    overlay_image_url = overlay_image_url.split("?");
    overlay_image_url = overlay_image_url[0];


    //MANUAL ASSIGN VARIABLE FOR FFMPEG COMMAND 
    var command,
        ExtraTimerSec = event.Records[0].timer_seconds + 5,
        TimerSec = event.Records[0].timer_seconds + 1,
        BackgroundWidth = 1080,
        BackgroundHeight = 1920,
        videoPath = (__dirname + '/tmp/' + event.Records[0].name);
    console.log("path", videoPath)
    //TEMP DIRECTORY

    var videoPath = '/media/volume-d/generatedCountdownS3/tmp/' + event.Records[0].name
    var tmpFile = fs.createWriteStream(videoPath)
    //FFMPEG COMMAND 
    if (event.Records[0].bg_type == 2) {
        if (event.Records[0].is_rotate) {
            command = ' -stream_loop -1 -t ' + ExtraTimerSec + ' -i ' + bg_value_url + ' -i ' + overlay_image_url + ' -filter_complex "color=color=0x000000@0.0:s= ' + event.Records[0].resized_box_width + 'x' + event.Records[0].resized_box_height + ',drawtext=fontcolor=' + event.Records[0].time_text_color + ':fontsize=' + event.Records[0].time_text_size + ':x=' + event.Records[0].minute_x + ':y=' + event.Records[0].minute_y + ':text=\'%{eif\\:trunc(mod(((' + TimerSec + '-if(between(t, 0, 1),1,if(gte(t,' + TimerSec + '),' + TimerSec + ',t)))/60),60))\\:d\\:2}\',drawtext=fontcolor=' + event.Records[0].time_text_color + ':fontsize=' + event.Records[0].time_text_size + ':x=' + event.Records[0].second_x + ':y=' + event.Records[0].second_y + ':text=\'%{eif\\:trunc(mod(' + TimerSec + '-if(between(t, 0, 1),1,if(gte(t,' + TimerSec + '),' + TimerSec + ',t))\,60))\\:d\\:2}\'[txt]; [txt] rotate=' + event.Records[0].box_angle + '*PI/180:fillcolor=#00000000 [rotated];[0] scale=w=' + BackgroundWidth + ':h=' + BackgroundHeight + '[t];[1] scale=w=' + BackgroundWidth + ':h=' + BackgroundHeight + '[ot];[t][ot] overlay = :x=0 :y=0 [m1];[m1][rotated]overlay = :x=' + event.Records[0].flat_box_coordinate_x + ' :y=' + event.Records[0].flat_box_coordinate_x + ' [m2]" -map "[m2]" -pix_fmt yuv420p -t ' +
                ExtraTimerSec + ' -r 24 -c:a copy ' + videoPath + "";
        }
        else {
            command = ' -stream_loop -1 -t ' + ExtraTimerSec + ' -i ' + bg_value_url + ' -i ' + overlay_image_url + ' -filter_complex "color=color=0x000000@0.0:s= ' + event.Records[0].resized_box_width + 'x' + event.Records[0].resized_box_height + ',drawtext=fontcolor=' + event.Records[0].time_text_color + ':fontsize=' + event.Records[0].time_text_size + ':x=' + event.Records[0].minute_x + ':y=' + event.Records[0].minute_y + ':text=\'%{eif\\:trunc(mod(((' + TimerSec + '-if(between(t, 0, 1),1,if(gte(t,' + TimerSec + '),' + TimerSec + ',t)))/60),60))\\:d\\:2}\',drawtext=fontcolor=' + event.Records[0].time_text_color + ':fontsize=' + event.Records[0].time_text_size + ':x=' + event.Records[0].second_x + ':y=' + event.Records[0].second_y + ':text=\'%{eif\\:trunc(mod(' + TimerSec + '-if(between(t, 0, 1),1,if(gte(t,' + TimerSec + '),' + TimerSec + ',t))\,60))\\:d\\:2}\'[txt]; [txt] rotate=' + event.Records[0].box_angle + '*PI/180:fillcolor=#00000000 [rotated];[0] scale=w=' + BackgroundWidth + ':h=' + BackgroundHeight + '[t];[1] scale=w=' + BackgroundWidth + ':h=' + BackgroundHeight + '[ot];[t][ot] overlay = :x=0 :y=0 [m1];[m1][rotated]overlay = :x=' + event.Records[0].flat_box_coordinate_x + ' :y=' + event.Records[0].flat_box_coordinate_x + ' [m2]" -map "[m2]" -pix_fmt yuv420p -t ' +
                ExtraTimerSec + ' -r 24 -c:a copy ' + videoPath + "";
        }
    }
    var final_command = '/usr/bin/ffmpeg' + command;


    //COMMAND EXECUTE HERE

    await exec(final_command, function (err, stdout, stderr) {
        console.log("data is here")
        console.log('err:', err);
        console.log('stdout:', stdout);
        console.log('stderr:', stderr);
        const params = {
            Bucket: bucketName,
            Key: "countdown/output.mp4",
            Body: stdout,
        }
        s3.upload(params).promise().then(data => {
            console.log("data is here -->", data)
        });
    });
    var tmpFile = fs.createReadStream(videoPath)
    console.log('temp file data:', tmpFile.toString())
};


  


• Launch Leech and the History of WMV

  14 septembre 2010, par Multimedia Mike — General

  I was combing through my programming archives again and came across an old Perl script called launch-leech.pl. This was a private script I used to maintain for the benefit of myself and a few friends. See, there was this site called Launch.com (URL doesn’t seem to do anything as of this writing but here’s the Wikipedia page). Purchased by Yahoo ! in 2001, Launch still maintained their independent branding. They also carried a lot of music videos, of which I am a huge junkie. launch-leech.pl was the tool I used to download the videos. This was particularly useful since I stubbornly clung to dialup internet access until mid-2004 and it would have been impossible to stream video at any decent quality (though there were 56k streams, so like I said– not possible at any decent quality).

  
  
  

  Technically
  I followed Launch.com for many years. To be honest, I only “followed” in that I figured out where their “latest videos” URL lived and regularly polled it. Each video had either a 6-, 7-, or 8-digit unique ID that could be plugged into the launch-leech.pl script which would then have a conversation with the relevant servers, determine the correct streaming URL with the highest quality, then download and save the URL by handing it off to an external program (first ASFRecorder, though I later switched to mmsclient).

  At one point, I even wrote a crawler that compiled an offline database of all the videos, their IDs and their metadata. I never thought of anything interesting to do with it, though.

  
  
  

  Windows Media Legacy
  During these glory days of leeching, Launch.com streamed using Windows Media. I admit, it’s a bit of a blur now — the site might have used Real or QuickTime, but I was obviously most in tune with the WM side. I remember when I first found the site circa 2000-2001, the videos were in MS MPEG-4v3, and the high quality bitrate was 300 kbits/sec. Eventually, Launch.com would stream WMV7, WMV8, and finally WMV9, with bitrates up to 700 kbits/sec. However, they never broke free of the 320×240 encoding resolution, which was frustrating. When I wasn’t able to notice any substantial difference between 300 and 700 kbits/sec, I felt it might be time to put those extra bits to work on a resolution upgrade.

  At least they were nice enough to re-encode a number of old videos using better codecs and bitrates with each revision, thus prompting me to scan through the site collecting updated video IDs for download.

  
  
  

  Epilogue
  I don’t clearly remember when I stopped visiting Launch.com. Video-wise, the web has been a blur of Flash video ever since about 2006. Meanwhile, I spent a lot of time collecting a bunch of music videos in the first half of the decade only to find that pretty much every version of every music video made since the dawn of time is available on demand thanks to YouTube. I have found that this phenomenon manifests in many areas as internet technology marches on.

  The Real Entertainment
  The launch-leech.pl tool represents a recurring pattern for me. I derive as much — if not more — entertainment from creating programs like launch-leech.pl (and implicitly reverse engineering something in the process ; in this case, a website) as I do from the intended entertainment media itself. I seem to have this issue a lot with games, too.

  Is this an issue for anyone else ? Am I the only one who would rather play with the box that a shiny toy comes packaged in ?

• How do i gain access to subproccess.py ?

  15 décembre 2023, par Kronik71

  So, my bot for some reason wants to access a folder in \WindowsApps\PythonSoftwareFoundation.Python.bunch_of_numbers\Lib called subproccess.py but it always gives the error : PermissionError: [WinError 5] Access is denied. I think it has to do with ffmpeg.

  


  Here's the full traceback (kinda long) :

  


  Traceback (most recent call last):
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\client\client.py", line 1900, in __dispatch_interaction
    response = await callback
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\client\client.py", line 1771, in _run_slash_command
    return await command(ctx, **ctx.kwargs)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\models\internal\command.py", line 132, in __call__
    await self.call_callback(self.callback, context)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\models\internal\application_commands.py", line 802, in call_callback
    return await self.call_with_binding(callback, ctx)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\interactions\models\internal\callback.py", line 43, in call_with_binding
    return await callback(*args, **kwargs)
  File "C:\Users\myuser\OneDrive\Desktop\button.py", line 38, in press
    voice_client.play(discord.FFmpegPCMAudio(executable=r"C:\Users\myuser\OneDrive\Desktop\ffmpeg-6.1-essentials_build\bin", source=audiosource))
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.Bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 290, in __init__
    super().__init__(source, executable=executable, args=args, **subprocess_kwargs)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 166, in __init__
    self._process = self._spawn_process(args, **kwargs)
  File "C:\Users\myuser\AppData\Local\Packages\PythonSoftwareFoundation.Python.bunch_of_numbers\LocalCache\local-packages\Python310\site-packages\discord\player.py", line 180, in _spawn_process
    process = subprocess.Popen(args, creationflags=CREATE_NO_WINDOW, **subprocess_kwargs)
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.bunch_of_numbers\lib\subprocess.py", line 971, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.bunch_of_numbers\lib\subprocess.py", line 1456, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
PermissionError: [WinError 5] Access is denied


  


  heres my code :

  


  import interactions
import discord
from discord import FFmpegPCMAudio
import tracemalloc

ffmpegexec = r"C:\Users\myuser\OneDrive\Desktop\ffmpeg-6.1-essentials_build\bin\ffmpeg.exe"

audiosource = r"C:\Users\myuser\Downloads\seatbelt-online-audio-converter.mp3"

source = discord.FFmpegPCMAudio(audiosource)

token = "my_token"

bot = interactions.Client(token=token)

tracemalloc.start()

@interactions.slash_command(
    name="joinvc",
    description="starts the game"
)

async def joinvc(ctx: interactions.ComponentContext):
    await ctx.send("Joining vc. Please make sure you are currently in a vc!")
    vc = ctx.author.voice.channel
    await vc.connect()

@interactions.slash_command(
    name="press",
    description="Press the button"
)

async def press(ctx: interactions.ComponentContext):
    await ctx.send(f"{ctx.author.mention} has pressed the button")
    vc = ctx.author.voice.channel
    voice_client = await vc.connect()  # Connect to the voice channel

voice_client.play(discord.FFmpegPCMAudio(executable=r"C:\Users\myuser\OneDrive\Desktop\ffmpeg-6.1-essentials_build\bin", source=audiosource))


bot.start(token)


  


  All of my code is above. I'm not exactly good at writing python, might just be something I'm misunderstanding. I just want it to play a noise in a discord voice chat when the /press command is used.