FFmpeg Tutorial for Beginners: Mastering the Command Line

[00:00] Welcome to the world of

[00:02] FFmpeg. FFmpeg is a powerful command

[00:04] line tool used for processing audio and

[00:07] video files. This tool is a versatile

[00:10] solution for handling multimedia

[00:14] files. So what exactly is

[00:17] FFmpeg? FFmpeg is a free and open-source

[00:20] software project. It includes a suite of

[00:23] libraries and programs. It's designed

[00:26] for handling video, audio, and other

[00:28] multimedia files and streams. Some of

[00:31] its key features include the ability to

[00:33] convert between different file formats,

[00:36] resize and scale video, extract audio

[00:38] from video, compress media files, and

[00:41] even apply filters and

[00:44] effects. Now, let's dive into the basic

[00:47] syntax of

[00:48] FFmpeg. The command structure generally

[00:51] looks like this. ffmpeg followed by

[00:54] global options then input options along

[00:56] with the input file and finally output

[00:59] options with the desired output file. A

[01:02] simple example of this would be

[01:04] ffmpeg

[01:06] input.mpp4

[01:08] output.webm. This command converts a

[01:10] video from mp4 format to webbm format.

[01:16] Let's explore some common FFmpeg options

[01:20] for input and output. - I specifies the

[01:23] input file. - F is used to force a

[01:26] specific input or output file format. -

[01:29] Y overwrites output files without asking

[01:32] for confirmation and -ash N ensures that

[01:35] output files are never overwritten. When

[01:38] working with video, - C: V sets the

[01:40] video codec. - R adjusts the frame rate

[01:44] specified in hertz.

[01:46] - S sets the frame size using width by

[01:48] height or an

[01:50] abbreviation and -B colon V sets the

[01:52] video bit

[01:55] rate. Now let's consider some of the

[01:57] audio options available in

[01:59] FFmpeg. Dash C is sets the audio codec.

[02:04] -ash B cols the audio bit rate dash A R

[02:08] sets the audio sampling rate dash C sets

[02:11] the number of audio channels and -ash A

[02:14] disables audio recording as an example

[02:17] the command ffmpeg- i

[02:20] inputmpp4- c

[02:23] aac-b a 192k output to mp4 converts

[02:27] audio to the AAC codec at 192 kilobits

[02:31] per second. Another example,

[02:34] ffmpeg- i

[02:37] input.mpp4-vn c ampp3

[02:41] output.mpp3 extracts audio from a video

[02:43] into the mp3 format. Finally, the

[02:46] command ffmpeg-

[02:49] iinput.wav-

[02:54] ar44,100-ac2output.wav converts the

[02:55] audio to 44.1 kohertz stereo audio.

[03:01] Let's explore some practical video

[03:03] conversion examples. To convert video

[03:06] from MP4 to MKV container format using

[03:09] H.264 video codec and AAC audio codec,

[03:13] you can use the command

[03:14] ffmpeg-

[03:16] input.mpp4- CV

[03:20] libx264- C AAC output MKV. To resize a

[03:26] video to 720p resolution, that is

[03:31] 1,280x720 while keeping the original

[03:33] audio stream unchanged, you can use the

[03:35] command ffmpeg- i input mp4-

[03:42] s,280x720- c a copy output mp4. To

[03:47] change the frame rate of a video to 30

[03:49] frames per second while preserving the

[03:50] original audio, use the command

[03:53] ffmpeg- i

[03:55] input.mpp4- r30- c a copy

[04:01] output.mpp4. Let's explore some advanced

[04:04] video operations.

[04:06] To extract a clip from 1 minute 30

[04:08] seconds to 2 minutes 45 seconds from the

[04:10] input video without re-encoding which

[04:12] makes it faster. You can use the command

[04:15] ffmpeg- i input mp4- ss

[04:19] 0001 col

[04:24] 30-2000245- copy output mp4. To add a

[04:28] watermark such as a logo.png png to the

[04:31] top left corner of the video positioned

[04:33] at 1010. You can use the command ffmpeg-

[04:37] iinput.mpp4-

[04:39] logo.png-filter complex overlay equals

[04:42] 10 col 10

[04:44] output.mpp4. To create a GIF from the

[04:46] first 5 seconds of a video at 10 frames

[04:48] per second, scale to 320 pixels width,

[04:52] you can use the command

[04:53] ffmpeg-input.mpp4-vf

[04:55] mp4-vf quotes fps= 10 scale equals

[04:59] 320-1

[05:04] quotes-toutput.gif. Now let's look at

[05:06] some common audio operations you can

[05:08] perform with

[05:09] ffmpeg. To extract audio from a video

[05:12] file and convert it to MP3 format at 192

[05:15] kilobits per second bit rate, you can

[05:17] use the command

[05:19] ffmpeg- i input

[05:22] atmpp4-vn c

[05:25] ampp3-b a 192k output mp3. To replace

[05:30] the original audio track in a video with

[05:32] a new audio file, you can use the

[05:34] command ffmpeg-

[05:37] iide.mpp4- idio.mpp3. MP3- C col v copy-

[05:42] mapap 0 col v

[05:45] 0-map 1 col a 0 output mp4 to double the

[05:50] volume of the audio track in a video

[05:52] file. You can use the command ffmpeg-

[05:56] iinput.mpp4-filter col a quotes volume

[05:58] 2.0 quotes

[06:02] output.mpp4. Let's explore streaming and

[06:05] recording

[06:06] functionalities. To stream a video file

[06:08] to an RTMP server like YouTube or Twitch

[06:11] using h.264 video and AAC audio, you can

[06:15] use the command ffmpeg- i input mp4- cv

[06:21] libx264- c

[06:23] aac- fvv

[06:29] rtserver

[06:30] slive slream. To record the screen on

[06:34] Linux at 30 frames per second, use the

[06:36] command

[06:38] ffmpeg-fx11

[06:46] grab-s1920x180-0.0-r30output.mpp4. Note

[06:48] that for Windows, you should use

[06:50] -fgdigra- desktop instead. To record

[06:53] from a webcam for 60 seconds on Linux,

[06:56] you can use the command

[06:59] ffmpeg-f4l2-

[07:01] i/dv/

[07:03] video0-t webcam_captured mp4. On

[07:08] Windows, use -fdow- i video equals

[07:11] camera name

[07:13] instead. Here are some pro tips to

[07:15] enhance your ffmpeg experience. Use -ash

[07:19] copy when possible to avoid re-encoding

[07:22] and save time. Preview commands with

[07:25] -ash tend to process just the first 10

[07:28] seconds. Check available codecs with

[07:32] ffmpeg-codeex. Use dashhide banner to

[07:35] reduce output

[07:36] verbosity. Always check the output file

[07:39] to ensure the desired quality and format

[07:41] were achieved. For learning resources,

[07:44] refer to the official documentation at

[07:46] ffmpeg.org/document.

[07:48] or/documentation html the ffmpeg wiki at

[07:54] track.fmpeg.org/wiki the man pages which

[07:56] can be accessed by typing man ffmpeg in

[07:58] the terminal and the help command

[08:01] ffmpeg-h or for specific options

[08:04] ffmpeg h filter equals scale. Also don't

[08:08] forget to check community forms and

[08:10] stack overflow for specific use cases.

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[08:27] [Music]