[0:00] So, if you have a huge video file and
[0:02] you want to compress it without
[0:04] noticeable quality loss, you can do that
[0:06] with a single FFmpeg command. And in
[0:10] this video, I'll show you how to do that
[0:13] perfectly. So, for that, you will have
[0:15] to have FFmpeg, a command-line video
[0:18] processing tool, installed. I have a
[0:20] video on how to install it. It is very
[0:22] easy and straightforward. The link is in
[0:25] the description. So, once you have
[0:26] FFmpeg installed, you can just reduce
[0:29] the size of your video without
[0:31] noticeable quality loss in a single
[0:33] command. So, here is a video I have. It
[0:36] is 7 minutes long, and the size is 6. 23
[0:41] GB. So, let's open the command prompt in
[0:45] this directory so that I can execute
[0:47] command on this file. And let's type
[0:50] Let's see the details of this video.
[0:54] So, as you can see, it is using AVC,
[0:57] means Advanced Audio Codec. This is a 4K
[1:00] video, 60 FPS, and a audio with AAC
[1:04] codec.
[1:06] Bit rate is around 320
[1:09] kbps. So, I have prepared few command,
[1:12] and those commands come in handy based
[1:16] on your
[1:18] situation. Like if you have an Nvidia
[1:20] GPU then
[1:22] you'll use Nvidia encoder, which will be
[1:26] super fast. But if you do not have it,
[1:28] don't worry. You will use processor
[1:30] source
[1:31] uh coding power, and that is sometimes
[1:34] way better. Just a bit slow, but
[1:37] compression is way better than Nvidia.
[1:39] So, the first command is for regular for
[1:43] everyone. So, here as you can see, we
[1:45] are using lib
[1:48] uh 264
[1:49] codec. So, whatever your video file is,
[1:53] the output video will have a lib x264
[1:57] codec, which is very mainstream codec.
[2:00] And then it comes There comes a flag
[2:03] called CRF. So, here in CRF, the higher
[2:07] value means
[2:09] lower quality. I mean, more compression.
[2:13] So, if the value is 18, then you'll see
[2:16] no difference. But if the value is 28,
[2:19] then video quality may degrade a little,
[2:22] but the size will be reduced a lot. So,
[2:26] a safe point is 23. Then preset medium
[2:30] for a balanced encoding, and I'm
[2:33] copying the audio codec, not changing or
[2:36] anything related to audio. And the
[2:38] second command is if you want to have
[2:41] very small file size. And again, if you
[2:45] have Nvidia GPU, then you'll use H.264
[2:49] NVENC. Same encoding algorithm, but done
[2:53] with the GPU for faster encoding. But
[2:57] uh the CRF flag changed to CQ for
[3:00] Nvidia.
[3:01] Everything else is same. 23 for a medium
[3:06] compression, and preset before is also
[3:09] for medium.
[3:10] So, the value before and CQ
[3:13] changed for Nvidia encoding, and I did
[3:17] not
[3:19] change the audio encoding here still.
[3:22] But if you want to have more control and
[3:25] a resilient command, then you can use uh
[3:28] something like {hyphen} a, means AC.
[3:32] That means audio will be changed to AAC,
[3:36] and the audio bit rate will be 120 kbps,
[3:38] which is like standard. And you'll use
[3:42] some additional uh flag like pixel
[3:45] format you've 26 uh 240 pixel, and some
[3:51] checking like if there is an audio If
[3:54] audio exists, then do the audio
[3:56] processing. If not, then don't. So,
[3:58] those are uh commands you can use to uh
[4:03] reduce the file size without losing
[4:06] quality drastically. So, I'll go with
[4:08] the last command since I have an Nvidia
[4:12] GPU. So, by the way, uh the input file
[4:16] is here, for example, input.mp4. So, you
[4:19] can replace this with your file name and
[4:22] extension.
[4:23] And whatever you put at the last as file
[4:27] name will be name of your output video.
[4:31] So, my output video will be
[4:33] output_compressed.mp4.
[4:35] You will see if everything goes
[4:38] correctly. So, I'm copying this command.
[4:40] The name of my input video is input.mp4.
[4:43] Let's go to the directory. Let's rename
[4:45] it to input.mp4.
[4:48] And let's open the command prompt in
[4:51] this directory. And let's
[4:54] zoom in so that you can see the command
[4:56] and paste the command.
[4:58] So, currently, the video is being
[5:01] processed.
[5:03] As you can see,
[5:06] it is
[5:07] using my GPU. So, yeah, video processing
[5:11] is resource-heavy.
[5:14] If I
[5:16] would use the
[5:18] processor encoding, then it would take
[5:21] even more
[5:23] even more time to
[5:25] encode the video.
[5:28] So, let's wait for it to complete.
[5:32] The video compression is processed.
[5:34] Now, let's go to the directory
[5:38] and see what is the output video look
[5:40] like. The input video is around 6.23 GB.
[5:46] And the output video is 1.63
[5:49] GB. So, from 6 GB to
[5:54] uh 1.5 GB,
[5:56] 75%.
[5:58] Okay.
[6:00] So, 4:1 means from So, initially, if the
[6:05] video size was 6.23, now the video size
[6:08] is 1.63 with identical video quality.
[6:13] So, that is how you can easily reduce
[6:16] your video file size. And here I have
[6:19] used some additional flag like MOV flags
[6:22] plus faststart. So, if you stream or
[6:25] play the video, it will start super
[6:27] fast, which is very convenient. So,
[6:30] that's it, guys. Uh if you have any
[6:32] questions or any comment, feel free to
[6:36] put that in the comment section below.
[6:37] I'll be happy to reply and see your
[6:40] opinion. So, that's it for this video. I
[6:44] will add this to the comments in the
[6:45] description and also how to install
[6:47] FFmpeg. So, that's it for this video.
[6:50] Hope you have learned something. See you
[6:52] in the next video.