Yes Professor. Size is very large.
Provided there is no encoding re-run on the files, whole course could be wrapped up in nearly
3.6Gb instead of
21Gb.
If you have to run encoding to add matermarks then you can add those using subtitle and later burn that subtitle into file so that file quality stay the same and there is no increase in size.
[CODE title="File from ZerotoMastery (downloaded from their website)"]General
Complete name : Important- New Kali Linux Categories Zero To Mastery Academy.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/avc1/mp41)
File size : 6.59 MiB
Duration : 1 min 26 s
Overall bit rate mode : Variable
Overall bit rate : 640 kb/s
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 4 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 min 26 s
Source duration : 1 min 26 s
Bit rate : 505 kb/s
Width : 1 912 pixels
Original width : 1 920 pixels
Height : 1 088 pixels
Original height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 29.970 (29970/1000) FPS
Minimum frame rate : 7.500 FPS
Maximum frame rate : 120.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.008
Stream size : 5.19 MiB (79%)
Source stream size : 5.19 MiB (79%)
Writing library : x264 core 157
Encoding settings : cabac=1 / ref=4 / deblock=1:0:0 / analyse=0x3:0x113 / me=umh / subme=8 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=24 / lookahead_threads=4 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=2 / b_bias=0 / direct=3 / weightb=1 / open_gop=0 / weightp=2 / keyint=90 / keyint_min=46 / scenecut=0 / intra_refresh=0 / rc_lookahead=40 / rc=crf / mbtree=1 / crf=23.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / vbv_maxrate=5625 / vbv_bufsize=5625 / crf_max=0.0 / nal_hrd=none / filler=0 / ip_ratio=1.41 / aq=1:1.00
Color range : Limited
Color primaries : BT.709
mdhd_Duration : 86300
Codec configuration box : avcC
Audio
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 1 min 26 s
Bit rate mode : Variable
Bit rate : 128 kb/s
Maximum bit rate : 201 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 1.32 MiB (20%)
[/CODE]
[CODE title="File from TutFlix (bigger)"]General
Complete name : Important- New Kali Linux Categories.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42 (isom/iso2/avc1/mp41)
File size : 46.0 MiB
Duration : 1 min 26 s
Overall bit rate mode : Variable
Overall bit rate : 4 469 kb/s
Encoded date : UTC 2021-06-04 04:12:51
Tagged date : UTC 2021-06-04 04:14:22
Video
ID : 2
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L5
Format settings : CABAC / 5 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 5 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 1 min 26 s
Bit rate : 4 236 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 30.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.068
Stream size : 43.6 MiB (95%)
Encoded date : UTC 2021-06-04 04:13:27
Tagged date : UTC 2021-06-04 04:14:22
Color range : Limited
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
Codec configuration box : avcC
Audio
ID : 1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 1 min 26 s
Bit rate mode : Variable
Bit rate : 228 kb/s
Maximum bit rate : 324 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 2.35 MiB (5%)
Encoded date : UTC 2021-06-04 04:12:51
Tagged date : UTC 2021-06-04 04:12:53
[/CODE]