 We are glad to be here me and my team we will give you a small this will be more of a demonstration session and we will give you some tips and some you know some some things which are not available maybe or some things that we do on a daily basis and you will be able to also create tutorials maybe for our project maybe for your own use in your own colleges okay for your teaching learning purposes so first of all like sir already mentioned you have to have you have to first decide what you want to teach and you need to have your flow in place what you are going to teach first second third okay in the order of learning has to be established right in the beginning and then you start at the very first topic okay always proceed from simple to complex okay which I'm sure as teachers you are already aware of and you know use simple language okay the motive is to help them to learn it is not about how much we know and it's not about creating tutorials on what I know and how much I know it's more of you know teaching aid to the learners so be at a very simple level okay I'm not saying you have to dilute your content what I'm saying is teach in a simple manner okay don't use flowery language or very technically difficult words okay because it doesn't help the learner right they are they are accessing your material because they don't understand the textbooks so if you are going to replicate textbook language in your tutorials it's not really going to help your learners okay so make it simple for them to understand now we have some procedures that we follow one is we use screen casting so screen casting is basically capturing anything that is demonstratable on a computer monitor it can be a laptop it can be a desktop okay it doesn't matter what machine you're using but whatever is displayed on your monitor can be captured through software which are meant for screen casting so we have screen casting software in both Linux and Windows and also in Mac so on Windows you can use software called as cam studio C A M S T U D I O it's free and open source it has right now been bought over but it's still available in free and open source version okay so you can use it without having to buy it and without having to pay any license fees or anything of that sort so look up for cam studio and you know downloaded from the first available link it will mostly be a tech Smith link but you will find it on you know most software providing services on Linux you can use something called as GTK record my desktop okay it's as simple as that record my desktop so if you look up for that you will be able to find that so I am on a windows machine here so I will just show you so this is what the cam studio recorder will look like so once you download and install it on your system this is what it will look like when you open it there are very simple control buttons here record pause and stop okay very simple to operate we also have a tutorial on this on our website if you need additional help you can go through that so I will just do a very small brief recording for you this is the capture area so whatever I demonstrate within this square will be captured okay and it also captures the narration so say for example I open something else okay I open something here and okay so great and then I will just stop the recording okay now as soon as I finish my recording this is what it will ask me for it will always give you an AVI file as output okay cam studio will always give you an AVI file so let me just save it with some name test one two three and on my desktop so I can locate it easily okay so whatever I showed you whatever I did within that capture area is right there okay now for recording your narration you don't need any fancy equipments you just need a headphone with a mic input something like this okay it's available at a very low cost 200 250 and you have a good recording system so once I will just show you the file size of this so you have an idea of okay so it's 348 MB and it's it's what like hardly a minute right so if you were to create like a 10 minute long video it's going to be huge yeah it'll probably go into GBs so you need to use something here the icon that I'm moving here this is one of the free available video converters okay it's the recording in one shot or we can pause it to resume it again you can pause there is a pause button right and if you set the hotkeys for it you can control it through your keyboard without actually having to go on the interface of cam studio thank you so what we what we do is we you know we tune it to control s which is our short key so every time I need to pause I just have to do a control s and it will just stop the pause the recording for that time then you can rearrange your screen whatever else you want to you know you want to minimize some window you want to open some window you can do all of that and then do control pause again and it will start recording okay it saves you a lot of editing time okay so you need to use the pause feature very creatively so like I said coming back this is one of the video converters which are available free of cost on the internet okay mobile video converter media converter but there are many others okay this is just a sample so now you've seen that my file was 300 odd MB right so now I will just add this file here okay let me convert it to quick time and add file and here it is okay without much loss of quality I get a fairly good conversion now let us check the file size okay 6.67 okay so 300 odd reduced to 6.67 so this is what you need to do if you're going to use cam studio because of AVI format it's a huge file format so without losing the quality of your video or your audio you can convert it to a lighter file format okay now for those of you who are interested in learning about translation and dubbing we have very simple procedures that we follow the time script was displayed to you sometime back by condenser so you must have noticed that there is a begin time for each sentence okay so every sentence there is a begin time so one sentence may be beginning at 345 and the next may be at 356 and the third may be at 402 okay now what it shows you is that between 345 and 356 you have how many seconds you have 11 seconds right you have 11 seconds and you have this one sentence which in English takes 11 seconds to narrate right so when you're doing the translation you have only 11 seconds to speak exactly the same thing in the local language okay in the language that you are translating so that is where the time script really helps okay it helps you to know how much duration you have and what we suggest for translation in in very very briefly what I can say is translate each sentence sentence by sentence okay when you're doing the translation so you have the exact duration with you for each sentence and after you have translated that you know sometimes you find that I can't translate in that you know I need more words so you can merge it with the next sentence if it is in continuing with whatever you're saying so for example if I'm saying click on save okay now type the file name and then click on the save button okay these are this is a one single activity that's happening though it's narrated in three sentences so if my time is I mean I'm not able to fit in my words okay I can merge these three and I need to communicate the action to the learner okay without losing the meaning of what is happening on the screen I need to use my words very economically and very creatively okay so that I'm not losing the meaning of what is being said so for after you have done your translation and you have your script now okay so next thing is to give your voice for that right so we use a software called as audacity audacity works on any operating system a u da c i t y audacity okay so this is that so this is what audacity looks like it works on windows it works on linux and on mac okay so no problem it has the same gui the same interface so you just need to learn how it works it doesn't matter which os it is on okay so again very simple vcr controls here this one is the record button so when you want to record you just click on that okay and you record something and then it is captured okay I do a pause uh and I can play it back okay so uh like any audio software it has got a left speaker and a right speaker okay you have a stereo mode you have a solo mode or a mono mode also if you want to record and it will bring down your file size the audio file size okay now once you've done this recording okay now this is what we call as the project file now here you can do a lot of manipulation with your audio uh for example if while you were recording you know somebody opened the door or something fell and uh you don't want to do that recording all over again okay there are some disturbances that happened uh it's not uh superimposed on your voice okay it has to be apart from your voice see if something falls or some noise and I am narrating I can do nothing about it but if it is in a portion of the audio where I'm not saying something but it has got recorded okay then we definitely can remove it off okay we can delete it off without having to re-record okay so there are facilities in this software which allows you to remove noise and it also allows us to amplify the sound now when you play back and you find that the sound is much lower than what you expected it to be okay again you feel exhausted or you just don't want to do it again so you can just amplify the sound okay so uh do you want to just show the there are facilities which are inbuilt in the software itself for doing uh these simple things uh it saves you time so what we'll do now is we'll do a uh two sentence recording okay and we'll show you how to amplify it and how to remove background noise so Sakina here will record uh two or three sentences so we have uh seen the timed script in English let me show you the timed script in the language that is the Hindi language yeah so we will record five sentences from these okay so notice that there is a time column on the left and the uh narration on the right okay so it she has translated it such that it is exactly in sync with the English sentence fine just open audacity so we have the record button there and we'll just start the liberal office writer case spoken tutorial may abka swagat hai is tutorial may hum writer ke baare mein sikhenge writer may win the toolbar just pause it display it you can see that the audio is too low so we can amplify the audio also we just selected the audio go to the effect menu and then click on amplify it will automatically give you the value uh which is required for the audio to be amplified click on okay you can see that the waves thing uh the amplified audio display Praveen we have we have some uh background noise also here so we can remove that uh uh disturbance also just select a portion where you feel that the uh disturbance is there and then again go to effect we have option of noise removal click on it get noise profile then select the audio again go to effect click on noise removal okay and we will have a better audio fine so uh we'll just see the second sentence starts at the 10th second right writer may win the toolbar so Praveen just see if it started at 10th second no no so you so then we have to split the audio so for that we have control i we split we use the time shift tool we drag it and keep at the appropriate timing so likewise we split the audio according to the given time okay fine then we save the project file now this is what we call as the project file okay where you have uh you cut the audio use you have slided it to wherever it is supposed to be okay you've done all your amplification you've done your noise removal okay now this is your project file so there are two saves that you have to do one is you have to save your project file with all the modifications you have done and your original recording and the second save that you do is you need to convert it into the format that you are actually going to use okay it could be an mp3 by default audacity gives you an ogg format okay now what we showed you here is we have split the audio right now uh if i have to do this over here okay now shifted back okay supposing it's here and split it here split arbitrarily any any point okay now we have to move this it won't move i need to create that gap for it to move right so we always start with the very last sentence after we have finished our entire recording we start with the very last sentence and we slide it into its appropriate time which we have noted earlier and we we always start from the back and we come to the beginning of the file this is because you need to create that gap for for you to slide it right now i cannot slide the second clip because there is no space to slide it i have to move the third clip only then i can move the second clip and only if i move the second clip will i have space to move the first clip okay so it works in a reverse direction you always start with the very last sentence that you want to slide into place right so so uh this is your project file so like i said you have to save it twice okay now we have the project file show the save the saved project file okay there's an option called save project you save it so we choose one location here desktop and click on save so we have our sample dot aup format that is the audacity format and we also have one extra data file so when we merge this audio with the video this the data file and the aup file should be in one folder now we will finally uh export the audio in mp3 format just go to audacity going back to the project file okay now just slide this slide the third clip somewhere in the second clip somewhere else okay now we this is assume that we have done our you know we have time we have placed it according to the time that we want and now this is final okay we have done all the modifications that we want on this or on this project file so now is the time to export it into the final format for use so click on export we have various formats for saving our audio file ogg mp3 wav right so we'll be saving our audio file into mp3 format click on save click on okay just play that mp3 yes now we will show you how to uh merge it with a video okay like Kanan sir mentioned the videos are created in english right the screencast in all of it is in english so it also has an english narration okay so we'll show you how to uh how you can extract the english voice from the video and then take the hindi voice and put it into that same video okay and you create a new video so just close this audacity okay so any any doubts on the audacity part so because we are going to close this yes ma'am yes yes yes we'll show you that okay so ma'am here is a very good question that if you pause your recording or if you stop it's it's you have created one track one audio track now when you in the same project you're continuing after some time okay or you've taken a break so in the same project okay so now this time what it has done is it has created a second audio track okay like she said now they are on two different audio tracks how do we get it into one because the final output we need everything in place right so what we can do is very simple so we can just select the audio from the second track use the time shift tool and we can just drag and keep on the first track now we can close the second rack which doesn't have the audio okay this also means that after you have recorded everything and you realize you had to say one more sentence okay you can go back to that same file record that sentence and create the gap that you need okay wherever you need it and you just place it over there okay and you finally you have to get everything on the one single track thank you ma'am you want to say something one more point as she said I'll undo all the steps okay I'm recording the first sentence something is going on I'll pass it if I want to record the second sentence if I record even the first audio track will start record in that you can see that the both will start recording while whatever I'm speaking will record and also what it plays here that will also get record so for that select this tool and keep your cursor over here then if you press the record button that will start from that particular point so it won't overlap the previous recording and the fresh recording and also while exporting go to file export you can see there is an option button here you can play with the settings for reducing the file size for example if you downloaded any audio songs from the online you can see either 128 kbps or 320 kbps with the maximum file size if you want to reduce your file size lesser you can use any one of this by going down and also you can choose a joint stereo or stereo and you can click on okay so once you exported the file size will be lesser I'll compare to the previous thing I'll click on cancer it's okay now everyone saw how to record an English tutorial and how to record the dubbed audio now let's see how to merge both together I am showing you an English video hello and welcome to the spoken tutorial on printer connection okay this is the English video the same video has been translated and dubbed into thumber launcher bar il valadu pukka mail muna il ulla it's okay now let's export this file go to file and export and click on options as I already said I reduce the file quality as 96 kbps to reduce the file size hope sir may mention that our tutorials are less weight for example rough we are thinking one minute video one mb we are concentrating on that so if you go with this kind of settings our our file size will get reduced I already exported that file so I'm not showing that again so here's the file dubbed mp3 and I have the English video played played the okay now I played both the things now let's merge both the things first tip what we have to do I already have an English video it's a kind of watching a dubbed movie first we have to remove the English audio from the video further we are using some command line tools that is called ffmpeg that will work on both I mean not both all the way all windows mac and linux ffmpeg to f ffmpeg okay so this basically will help you to extract audio from a file from a video which already has an audio and it will also help you to take another audio and merge it into a video file so you can go to the ffmpeg website and you can download the software based on your machine and you can install it and it is a free and open source software important thing is a it's a command line tool in each OS for example in windows linux mac there is a slight difference for example if I'm using that command in linux means I just have to type ffmpeg and space the options whatever I want before that I already organized my files into a particular folder I'll go to that folder so here you can see my dubbed mp3 and the English original and along with the audacity and data file it's okay first I'll show how to do that in mac first I want to remove the audio from the English video so I type the path where the ffmpeg is installed on my machine iphone i is a input file with this option we can input any number of input files but we have to mention that iphone i for each and every time so this is the file where my ffmpeg is there iphone i for input option and this is my English video next I want to remove the audio and I want only the video so I'll type iphone v codec paste copy paste iphone an so this iphone v codec denotes the video codec and copy will copy what the exact codec we all know that mp4 quick time I mean MOV WMA like that but each and every file format have some particular video and audio codec so this command will copy the same codec of the video iphone an denotes to remove the audio from that video now I'll save that file as English iPhone no audio dot MOV the same file extension this will take some time after that you can see here the English iPhone no video if I play that I can't hear any volume so with the help of this command the audio is completely removed from the video now the next step is we have to merge our dubbed audio into this video let's go back to the command line let's type the command application iphone i our file is English iPhone no audio so this contains only the English video next I'm giving one more input that is my dubbed mp3 next I'm copying both the video and audio codec and my output file name I give it as dubbed.mov again it will take some time to merge both the thing together I'll minimize you can see a file which is created dubbed.mov let's play that so my dubbed audio and the video join together okay there are few changes if you are working on Linux or Windows I'll show that consider this is my command okay if I want to do the same command in Linux I don't need to worry much just go back excuse me sir oh sir sir I have one question so as Linux is command-driven language but in Windows we do not have such platform for such kind of commands so I'm coming next to that we have we have the command line in Windows we have DOS prompt but all these Linux command like minus i minus these kind of options are not available or you have interface for Windows as well in which we can convert ffmpeg will work on Windows with the minor change I'll show you how to do that you can open the command prompt okay and do the same settings so as I show that right now I worked on more things sir what is there is any graphical interface available in the software to do all kind of things like if we go to menu bar and select remove voice such facilities available or not in the software okay there is no proper GUI for that right now for example few minutes before Nancy I'm sure that mobile media converter yeah it is based on ffmpeg I can show that for example as of now there is no good dub software software okay I'm opening the mobile media application show package contents contents you can see ffmpeg is inside that so everything is based on that ffmpeg command line tool but they are creating different GUIs I will prefer better go with the command line okay so okay as I said that this is the command which work on Mac if you want to do on Linux just remove this you don't need to mention where it is located mention ffmpeg space iphone and the rest of the commands so if you run this it will work on Linux if you are working on Windows as I said you have to mention the path in most of the windows it may be in c colon slash program files in some machines it may be in program file x86 or just program files and then slash ffmpeg this is the only different if you did on windows linux or mac in linux we don't need to mention where the ffmpeg is located by default it will call in mac and windows we have to mention exactly the path which is installed so that is the different otherwise the rest of the commands are same you can run those things there is a video which is how to use audacity and ffmpeg it's on our website so what is the benefit to use of the ffmpeg if it is easily implemented in the window movie maker file size is one concern that we will have easily through the file size we can easily convert it on this file size and the second is it's not open source right windows is a proprietary operating system you have to purchase windows right it is not free and open source it won't allow you to convert these into various file formats like some are not available in movie maker okay file formats limited file formats into which you can convert okay thank you