[0:00] so FFM Peg is very simple and very
[0:03] powerful and it's actually a lot more
[0:04] straightforward than you might realize I
[0:07] use it exclusively for my screen
[0:09] recording and mic recording and then I
[0:10] also use it for the postprocessing of
[0:12] taking this phone video here and
[0:14] slapping it into the corner of the
[0:16] screen and drawing a little gray box
[0:17] around that that's done entirely with
[0:19] FFM Peg bass scripts and I've got my
[0:22] recording script here and then I have an
[0:23] additional script that's just going to
[0:25] take everything and slap it all together
[0:26] and give me that final video that's
[0:28] going to get uploaded so I I'm going to
[0:30] go over today how these scripts work how
[0:32] I use ffmpeg and also the basics of
[0:34] recording and some of the filter options
[0:36] with it as well um I want to start by
[0:38] going over why I'm not using OBS because
[0:41] OBS is kind of the standard for
[0:42] recording and I've gotten you know
[0:44] questions asking if I'm using OBS I'm
[0:46] not using OBS it's a huge program and
[0:48] I'm not saying it's bad but it is just
[0:51] too much for what I need all I need to
[0:52] do is record my screen and record my mic
[0:54] and that's it and OBS is this big tool
[0:57] meant for recording and live streaming
[0:58] and all of this other stuff and I just
[1:00] don't need something that resource
[1:02] intensive and not to mention if I try to
[1:04] run it on my ThinkPad it just lags out
[1:05] it is that resource intensive whereas
[1:07] FFM Peg can instead just run exactly
[1:10] what I need which is just the singular
[1:12] recording command that I need it to be
[1:13] running so um if you don't already know
[1:16] FFM Peg is essentially just a bunch of
[1:18] tools for audio and video manipulation
[1:21] um everything from recording and
[1:22] streaming to converting between formats
[1:25] to applying filters onto audio and video
[1:28] so for example I have a D noise filter
[1:30] on my mic that is getting applied live
[1:32] as I'm recording and writing to that
[1:34] file so that's pretty cool and there's a
[1:36] whole bunch of stuff you can do with FFM
[1:38] Peg and it it really shines when you
[1:40] want to be running a bunch of things
[1:42] many times over and you don't want to be
[1:44] you know having to open up like editing
[1:46] software or you know Ken live or
[1:48] whatever to actually apply those edits
[1:51] since I'm running the same things every
[1:53] single video I make you know I always
[1:54] have to take this phone and put it in
[1:56] the corner of the screen and draw a
[1:57] little box around it so why would I do
[2:00] that manually in an editing program when
[2:02] I can just have a shell script to do it
[2:03] right anyways so to record with FFM Peg
[2:07] I know the commands with FFM Peg can
[2:09] kind of appear intimidating at first if
[2:11] you've never done anything with them but
[2:13] you can break them down always into
[2:15] input and output it's always going to be
[2:17] an input file and an output file so if I
[2:20] want to record my screen here this
[2:22] screen is going to be the input and the
[2:24] video file that I'm writing to is going
[2:25] to be the output so I would start by
[2:28] adding this- f for format X11 grab since
[2:31] I'm on X and I will put the Wayland
[2:33] equivalent in the description um so-
[2:36] fx11 grab and then I want my input to
[2:38] actually just be the second monitor here
[2:40] so I'm going to start with 0 0 since
[2:42] that's the top coordinate of the first
[2:45] Monitor and then I'm going to add on
[2:46] 1920 since my first monitor is 1920 x
[2:49] 1080 I'm just going to add on 1920 and
[2:51] then uh comma zero and then I'm just
[2:53] going to give it an output file which is
[2:55] uh I don't know test. MKV um and the
[2:58] only other thing I want to do is just
[2:59] give give a video resolution um just as
[3:02] a good practice it's um better to just
[3:04] give it a resolution so that way you can
[3:06] just ensure you're getting the right
[3:07] resolution if I go ahead and press enter
[3:09] we are now recording my screen and uh it
[3:12] is actually that simple the only other
[3:13] thing worth mentioning if you don't know
[3:15] your screen dimensions just check with X
[3:17] randar and um it actually goes ahead and
[3:18] tells me uh plus 1920 that is um where
[3:22] I'm going to shift over that's where the
[3:23] display port display actually starts
[3:26] anyway so I could just cue to quit out
[3:28] of this recording and then I could check
[3:30] on it with you know MPV or whatever you
[3:31] normally use and um yeah we've got a
[3:34] screen recording perfect so if I wanted
[3:37] to have audio on that recording as well
[3:40] um I could go ahead and instead run this
[3:42] with an extra input as um a Alon device
[3:45] so I could do F uh oops falsa and- I
[3:49] default and that's just going to run
[3:51] with the default input device which is
[3:52] my mic if you have multiple inputs then
[3:55] just check and make sure you're
[3:56] selecting the right one but I only have
[3:57] one so I can just go with default there
[3:59] and that is now recording my screen with
[4:01] my mic and that is the most simple way
[4:04] to record with FFM Peg um that is as
[4:08] simple as just recording with one
[4:09] command but of course it would be a lot
[4:10] simpler to have it just run with a
[4:12] hotkey which is what I normally do hence
[4:14] why this recording script here so this
[4:16] recording script allows me to just call
[4:18] it with the hotkey and then run it to
[4:20] record it toggles on and off recording
[4:22] and then it also adds this little thing
[4:24] in dwm Block so I can actually see if
[4:26] I'm recording or not um and I just have
[4:28] this bound as a hotkey so I I literally
[4:31] I'm just calling this shell script with
[4:32] the hotkey so um the main thing going on
[4:35] here is this record function the first
[4:37] thing I want to do is toggle on my
[4:39] microphone since I normally leave it off
[4:41] so I first toggle it on um and then I
[4:43] have my two different FFM Peg commands
[4:45] and I have it in two commands just
[4:47] because I do want a separate audio file
[4:49] for backup purposes essentially just in
[4:52] case I ever did need an exclusive audio
[4:54] file um so my screen recording command
[4:57] is what I pretty much just explained
[4:59] with the only additions of I'm setting
[5:01] the frame rate to be 30 frames per
[5:02] second and I'm setting the codec to be
[5:05] h264 so CV is just for video Codec um
[5:08] and- qp0 is for lossless quality um the
[5:12] codec is actually going to it's going to
[5:14] be in this MPV uh MPV MKV container
[5:18] format here um MKV and MP4 and a couple
[5:21] other formats are all Container formats
[5:23] so if you set the codec they all support
[5:25] different codecs so if you want to
[5:26] actually set the codec you can do that
[5:28] it's not like the codec is be determined
[5:30] by the file extension so anyways I'm
[5:32] setting the codec and then I just have
[5:34] the file that it's going to get written
[5:35] to here um and the date command is just
[5:37] ensuring that every file name is going
[5:39] to be unique so I'm not you know
[5:40] overwriting old recordings or anything
[5:43] um and then with the audio recording
[5:45] part it's just getting written to a wave
[5:47] file but the only thing of Interest here
[5:48] is the uh audio filter which is this is
[5:51] what the noise filtering um as I'm
[5:53] recording is so it's just using FFM
[5:56] Peg's audio filter of AFF TDN which I
[5:59] have noidea idea what that stands for
[6:00] but it allows for a bunch of different
[6:02] noise filtering options and I'm using
[6:04] noise floor of -75 but obviously that's
[6:07] the kind of thing where you would want
[6:08] to adjust it to your particular
[6:09] microphone um mine has like kind of a
[6:12] lot of white noise in it so this just
[6:13] gets rid of that and it's a lot clearer
[6:16] with that so um anyways that gets
[6:17] written to a wave file and what I'm
[6:19] doing with both of these recordings is
[6:21] it's actually getting uh the P IDs sent
[6:23] to temporary files so that way I
[6:25] actually can check whether I am
[6:27] recording or not at the end here um by
[6:30] seeing if the file exists so if that
[6:32] recording file exists then when the
[6:34] script is called it's going to end the
[6:36] recording and exit the script or if that
[6:38] file doesn't exist it's going to start
[6:40] recording which allows me to have just
[6:42] one hotkey and always toggle on and off
[6:45] the recording state with that hotkey and
[6:47] obviously every time it records it's
[6:49] just going to start you know a new file
[6:51] uh for that particular recording and the
[6:53] last thing happening in this script is
[6:55] just the dwm blocks icon up here and um
[6:58] credit to Luke Smith as usual for the
[7:00] idea of the kill signals with dwm blocks
[7:03] I don't know if it was his idea in the
[7:04] first place or if he got it from
[7:05] somebody else but that is where I got
[7:07] the idea from so credit where it's due
[7:10] um anyways I'm using just custom kill
[7:12] signals to kill the recording icon block
[7:14] up here um and replace it as needed and
[7:17] I've gone over that a million times so
[7:18] I'll just link to another video in the
[7:20] description where I go over the dwm
[7:21] block stuff but um I don't know the last
[7:24] thing I'm doing is just sending
[7:25] notifications um when I start or end
[7:27] recording and this is my recording
[7:29] script so it leaves me with a-wave file
[7:31] and a MKV file and from there what I
[7:34] have to do is take this phone video pull
[7:36] it off of the phone and then combine
[7:38] everything together so I have a script
[7:40] to do that um and essentially I just go
[7:43] to the directory that has my video files
[7:45] in it I I make a new directory for the
[7:47] singular video that I'm working on SLAP
[7:49] everything in the directory and then
[7:50] just run this script and um actually
[7:52] before I go over the script I wanted to
[7:54] mention this page here uh FF improviser
[7:57] I guess would be how you would say it um
[7:59] and this is a really really good
[8:00] resource I will put it in the
[8:02] description um it's got a bunch of just
[8:04] like cheat sheet stuff for how to do
[8:06] stuff with FFM Peg I've relied on this
[8:08] site a ton for figuring out how to do
[8:10] stuff because if you don't want to read
[8:12] through the super thick FFM Peg man page
[8:15] um this is way easier you can just skip
[8:17] to what you need and it explains
[8:18] commands um really really helpful site
[8:21] so I will put this in the description
[8:23] but anyways on to my script here and
[8:25] this is where I'm going to start talking
[8:26] about filters in FFM Peg a little bit
[8:28] since um that is what I'm doing the
[8:30] entire process is just applying
[8:31] different filters so that it can then
[8:34] you know take this uh screen recording
[8:36] uh crop it uh flip it out remove audio
[8:39] apply it onto the screencast so anyways
[8:42] the first thing I'm doing is taking this
[8:44] screen recording this uh sorry not
[8:46] screen recording this phone recording as
[8:47] an input file um and applying a video
[8:49] filter I'm applying first a crop and
[8:52] then a horizontal flip and you can apply
[8:54] multiple videos uh video filters at once
[8:57] with FFM Peg so crop comma horizontal
[9:00] flip the crop dimensions are just crop
[9:03] Dimensions um and the last thing I'm
[9:04] doing is just removing audio since I
[9:06] don't need audio from the phone video
[9:08] and that outputs to this cam. mov the
[9:10] next thing I need to do is map my audio
[9:13] from my wave file onto my screen
[9:15] recording my MKV so I'm just taking
[9:17] those both as input files I'm mapping
[9:19] them together and oh this is this is
[9:21] pretty important this codec here is just
[9:23] set to copy uh so that way I don't
[9:25] re-encode the video because it is best
[9:27] to avoid re-encoding a video if you
[9:29] don't have to um a to save time and B
[9:31] the more you re-encode the more chance
[9:33] for errors Etc you're getting so um
[9:36] avoid re-encoding when possible um and
[9:38] then I just end up with this applied.
[9:40] MKV I'm then going to draw the gray box
[9:43] in the corner and that's just a video
[9:44] filter for draw box um I'm just giving
[9:47] it coordinates and a color and it's
[9:49] going to fill up the box and then I get
[9:51] this box.
[9:52] MKV um then I'm going to Overlay this uh
[9:55] cam. mov that got you know cropped and
[9:58] flipped Etc um that's going to get
[10:00] overlaid onto the screen video and I'm
[10:02] using complex filtering here so that
[10:04] first of all I need to actually make
[10:06] sure they are in the same color space um
[10:08] which is pretty important because by
[10:10] default my phone video here is in a
[10:12] different color space than my screen
[10:13] recording so I need to make sure they're
[10:15] actually converted to the same color
[10:17] space um so I'm doing that here and then
[10:20] after that I overlay the uh phone
[10:22] recording onto the screen recording and
[10:24] then that just gets exported to this
[10:26] final. MKV which is what gets uploaded
[10:28] to YouTube and then I just remove the
[10:31] extra stuff um from the process and I
[10:33] send myself a notification and this is
[10:36] how I edit my videos with FFM Peg um
[10:39] it's a lot easier to be able to just go
[10:41] into a directory and run a script as
[10:43] opposed to having to you know open up a
[10:44] program like Kaden live and then import
[10:46] all the files and you know rearrange
[10:48] everything and then render it out it's a
[10:50] lot easier just to run a script so this
[10:52] is where FFM Peg really shines if you
[10:55] have any sort of repetitive acction
[10:57] actions that you're doing over and over
[10:58] in editing you may well be able to just
[11:01] replace it with FFM Peg scripts but
[11:03] anyways I hope you enjoyed this video
[11:04] and I'll see you next time peace