Udemy

AliShirani · ‎11-22-2023

You are correct sir, it is not auto-downloading, in fact the version allowed to be downloaded is [too] of lowest quality. Native video player of a bowser may be different, normal html 5 video player has a knob on right side, as shown in image below: IF you click that you will have a floating menu that has the Download entry, click that please. Or simply Press Ctrl + S (Sindows / Linux) , Command + S (Mac) to save it to disk. To Udemy staff : (Possible fix) - Your script that is rendering media file data isn't probably sending header content-disposition as "attachment" in the beginning (and/or before data is pushed to output). Kind regards

AliShirani · ‎11-22-2023

@Teem - If the course is about some on-screen instructions or sharing of a presentation, learn using OBS studio. If course requires your presence within screen, adjust camera and find best settings. In all cases prepare your material first that you have to talk about, secondly do test recording (a phrase only) before starting to record lecture. And follow the link provided by Samreen.

AliShirani · ‎11-22-2023

@АннаРайт - Dear Anna, It is really simple: 1. In Curriculum area, go to desired lectured, preview the lecture "As Instructor" 2. Click Gear Icon within Video Player and Click "Download Lecture" as show in screenshot below: NOTE: Remember the quality of video might be different than the one you see on screen. Kind regards

AliShirani · ‎11-21-2023

I am talking about getting profile from whole audio collectively and intelligently which "sox" does automatically. Most importantly using command-line not GUI.

AliShirani · ‎11-21-2023

@FettahBen - sox is cross-platform, I tested it on Microsoft Windows and sent you guys results. There are many software out there and best amongst those is audacity, but the thing is saving editing time and concentrating on publishing. When I have to record using OBS I won't be running audacity at the same time, it becomes confusing. I hope you get the point.

AliShirani · ‎11-21-2023

@Michael_D_Nwaogu In fact boosting volume is not an issue, but the reduced volume you are noticing is due to noise gone. Thank you for review. Best would be if you guys can provide me real samples (although short). Thank you

AliShirani · ‎11-21-2023

Audio noise reduction process test results (public domain audio sample): ORIGINAL : https://tinkle.wiki/original.mp3 NO-NOISE: https://tinkle.wiki/noise-removed.mp3 Will try incorporating this mechanism in automation. @Michael_D_Nwaogu @Robert_Hean @FettahBen

AliShirani · ‎11-21-2023

@FettahBen - Indeed, but "sox" can auto-detect (consecutive distortion chunks,) create a noise profile that mostly is correct with proper narration untouched. I did, and since I have filtered microphone I don't have this problem mostly except for requirement to boost volume. i just got a sample from web and reduced noise to absolutely ZERO. Let me someway attach samples (before & after) or upload somewhere and link here. I want this to be part of automation process (in fact no none goes in crowded market to record their lecture lol, but as far small noise, that I think can be reduced perfectly). Give a try to sox please Mr. Fettah. regards

AliShirani · ‎11-21-2023

@FettahBen @Michael_D_Nwaogu @goyashy @Robert_Hean Can any amongst respected instructors please attach / send 5 seconds long audio that has noise ? for testing purposes (especially the sample that you may have later updated using audacity, I will need original noisy one), this research will benefit all of us. Actually noise profile creation using SoX is not clear to me because the samples am testing my own samples that do not have noise at all. regards

AliShirani · ‎11-21-2023

@FettahBen - Thank you so much for appreciation. Indeed it is continuous learning experience. I am trying my best extract the pattern of noise profile within audios (using different tools), problem starts when you do not have silent portion in audio in the beginning. My second concern is boosting volume + enhance audio to studio standard (which adobe podcast does), I want to do all the stuff from command-line even if it produces 80%+ results it is perfect, we can tune it gradually. (Goal reduce said 30 seconds job to 10ms). Kind regards

AliShirani · ‎11-20-2023

@Michael_D_Nwaogu JSON: I meant configuration (basic settings of batch processor NOT the muxer that replaces updated audio files), 2 major scripts practically. I will make it use windows INI files which has very less chance of error. regards

AliShirani · ‎11-20-2023

@Michael_D_Nwaogu - Very soon, most probably right after the current course (in-progress). Am planning to release couple of chapters as part 1 to be honest as I still have a lot pending to be recorded. Scripts: for sure, I just refined couple of scripts to save more execution time. You just need minimal of PHP with GD & ffmpeg only as core of scripts. I will surely be doing that boss. Best regards

AliShirani · ‎11-20-2023

🙂 Boss, even that method of yours by filtering all audios at once is promising and may save a lot of time; We can write a script that may combine existing videos + chunk from that long audio created from audacity (in fact files must be in correct sequence just the way in audio 1,2,3,4......). It was great talking to you sir !

AliShirani · ‎11-20-2023

In fact, you reminded me of very important topic sir. I have a small automation of generating vtt and srt subtitles and am still uploading them manually, I plan to automate this too. Thank you for your input

AliShirani · ‎11-18-2023

To all great instructors on Udemy. I would like to someday upload my scripts and make them opensource, or the best would be to provide you all an user interface where you just type chapter / topic / sub-topic / description, select design, music and system generates and intro for you. Also, gives you a batch file containing command t join newly created intro and your lecture video perfectly. Hope to do this very soon.

AliShirani · ‎11-18-2023

@Michael_D_Nwaogu - Indeed that is great way of enhancing audio, matter of fact is I used audacity just once and I admit am no expert when it comes to audio and video, believe me :). Thus, I had to find a way to automate stuff (that is what I do as SCRUM Master and Project Manager), so I used my rusty programming skills to do that, written some scripts (also because am too lazy to edit each piece of audio / visual manually); Now while recording a second course these scripts are really saving a lot of my time, am just running these scripts (in batches), and immediately uploading as number of lectures are ready. Thank you for your message sir !

AliShirani · ‎11-18-2023

@GertrudeCho465 - thanks a lot , indeed, you are right.

AliShirani · ‎11-18-2023

You have am amazing vlog and I think you for your comments. Best of luck

AliShirani · ‎11-18-2023

@Samreen Nisa Qureshi - Thank Samreen, highly appreciated

AliShirani · ‎11-18-2023

@ismailkhuz16 - Thank you sir

AliShirani · ‎11-18-2023

@peter_dalmaris - Thanks a lot

AliShirani · ‎11-18-2023

@Robert_Hean Awesome ! Highly appreciate your concern and interest. Why not go for such a course together. Most welcome.

AliShirani · ‎10-03-2023

As I can see you already have created a course on ffmpeg, am heavily using ffmpeg for almost all purposes, except for audio and banner. Banner actually is created using PHP script (GD to be specific), because font rendering of ffmpeg is not good enough. 1. create 4k background first 2. load as image resource in GD using PHP 3. plot your text and watermark / logo 4. render as HD png file. 5. use ffmpeg to create clip by joining above mentioned png + custom music track (7 seconds), export mp4. 6. Join #5 and your lecture video using ffmpeg

AliShirani · ‎09-24-2023

@AriLevy112 Indeed. I assume you may have collected sufficient information to feed to LLM, I think you should propose this to Udemy staff + an AI assistant micro-service based on said data would help Udemy + questioners better; later that can be incorporated on web as well as Mobile apps, etc. Great Idea btw. regards

AliShirani · ‎09-24-2023

Welcome @OkanAkyuz ! Great to know about your skills. Your courses will be great addition to udemy I am sure.

AliShirani · ‎09-24-2023

I don't think that would be possible. You only have preview option, there's no option to set it "free".

AliShirani · ‎09-23-2023

Actually there are 2 kind of courses as far I know 1) Free course, 2) Paid course, there's no such thing as test(-drive) course that goes live. What you can do is create a new course & curriculum, upload your videos and use "Preview" option to see as student. On the other hand if you want to build interest of people in your complete course (that you want to launch), create a "free" crash course of few hours (follow minimum duration requirements), and give spread the URL, later create your full course. I hope it helps Ali...

AliShirani · ‎09-20-2023

Just wondering! If you still see the button "Submit for Review" in course creation page (after persona verification), that means the process was half-way completed, and you need to click it again.

AliShirani · ‎09-20-2023

What is average size of 1 video file? What is format? avi, mov, mp4? What are dimensions (width / height) ? I can suggest a simple tool called "ffmpeg" to reduce size (especially bitrate).

AliShirani · ‎09-19-2023

The tool I am using is ZoomIt (Microsoft Official, and free) for that purpose, it allows drawing, different colors. It also allows recording but am recording using obs. this tool works with any plug and play devices acting as mouse. You may kindly check this URL: https://learn.microsoft.com/en-us/sysinternals/downloads/zoomit regards

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Ali Shirani

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Ali Shirani

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CS Teacher / SCRUM Master / Manager PMO / Author

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