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Calculateur de taille de fichier vidéo – Estimation du stockage et de la compression

Utilisez ce calculateur pour estimer les besoins en stockage de votre vidéo en fonction de la résolution, du taux de rafraîchissement et des paramètres de compression. Sélectionnez un format vidéo courant ci-dessous pour pré-remplir les paramètres recommandés ou personnalisez tout vous-même.

Formats vidéo populaires :

Quelle quantité de stockage mon vidéo nécessite-t-elle

Durée de fonctionnement Info

Taux de rafraîchissement (fps) Info

Taille du cadre Info

Codec vidéo (par ex., H.264/MPEG-4 AVC) Info

Lorsque vous choisissez un codec, vous fixez souvent certaines configurations, telles que le sous-échantillonnage de la chrominance (par exemple, 4:2:0 pour le H.264), la profondeur de bits (8 bits contre 10 bits), les canaux de couleur pris en charge (RGB contre YCbCr), et même la résolution maximale ou le taux de rafraîchissement. Chacun de ces choix, ainsi que la taille de l'image et la durée de lecture, influence finalement la taille du fichier et le débit (la rapidité avec laquelle votre matériel doit traiter les données). Modifier l'un de ces facteurs peut améliorer ou réduire la qualité vidéo, mais cela affecte également la quantité de stockage et de puissance de traitement nécessaire.

Comparaison de la compression des codecs

Type de codec

Canaux de cou­leur
Profon­deur de couleur
Sous-­échantillonnage de la chrominance
Théo­ré­ti­que %
Taux de bit­réel/Rapport %
Codec Com­pres­sion
File Size
RAW Uncompressed RGB AVI
3
10
4:4:4
100
100
1,0×
647,29 GB
total_bits: 5 560 178 440 195 bits = 647,29 GB
MBpHR=662411 = 5 556 706 213 888 bits = 647 GB @ 1920 by 1080
codecCompressionRatio: 1,000
RAW Uncompressed YUY2 AVI
3
10
4:2:2
67
67
1,0×
431,85 GB
total_bits: 3 709 561 193 130 bits = 431,85 GB
MBpHR=441938 = 3 707 244 642 304 bits = 432 GB @ 1920 by 1080
codecCompressionRatio: 0,999
ProRes HQ
3
10
4:2:2
67
12
5,6×
77,39 GB
total_bits: 664 792 904 199 bits = 77,39 GB
MBpHR=79200 = 664 377 753 600 bits = 77 GB @ 1920 by 1080
codecCompressionRatio: 5,576
ProRes 422
3
10
4:2:2
67
10
6,7×
64,64 GB
total_bits: 555 253 164 303 bits = 64,64 GB
MBpHR=66150 = 554 906 419 200 bits = 65 GB @ 1920 by 1080
codecCompressionRatio: 6,676
Grass Valley HQX SuperFine
3
10
4:2:2
67
12
5,6×
76,86 GB
total_bits: 660 226 649 908 bits = 76,86 GB
MBpHR=78656 = 659 814 350 848 bits = 77 GB @ 1920 by 1080
codecCompressionRatio: 5,614
Grass Valley HQ Fine
3
8
4:2:2
67
10
5,4×
63,52 GB
total_bits: 545 608 630 882 bits = 63,52 GB
MBpHR=65001 = 545 267 908 608 bits = 63 GB @ 1920 by 1080
codecCompressionRatio: 5,435
ProRes LT
3
8
4:2:2
67
6
9,6×
36,02 GB
total_bits: 309 430 879 045 bits = 36,02 GB
MBpHR=36864 = 309 237 645 312 bits = 36 GB @ 1920 by 1080
codecCompressionRatio: 9,583
H.264 AVC MPEG-425,0 Mbps
3
10
4:2:0
50
2
28,2×
11,50 GB
total_bits: 98 753 642 903 bits = 11,50 GB
MBpHR=11765 = 98 691 973 120 bits = 11 GB @ 1920 by 1080
codecCompressionRatio: 28,152
H.264 AVC MPEG-420,0 Mbps
3
8
4:2:0
50
1
28,0×
9,23 GB
total_bits: 79 296 699 065 bits = 9,23 GB
MBpHR=9447 = 79 247 179 776 bits = 9 GB @ 1920 by 1080
codecCompressionRatio: 28,047
H.265 HEVC MPEG-415,0 Mbps
3
10
4:2:0
50
1
38,9×
8,33 GB
total_bits: 71 515 600 300 bits = 8,33 GB
MBpHR=8520 = 71 470 940 160 bits = 8 GB @ 1920 by 1080
codecCompressionRatio: 38,874
H.265 HEVC MPEG-418,0 Mbps
3
8
4:2:0
50
1
37,2×
6,97 GB
total_bits: 59 848 149 078 bits = 6,97 GB
MBpHR=7130 = 59 810 775 040 bits = 7 GB @ 1920 by 1080
codecCompressionRatio: 37,162
MPEG-2 (DVD) VBR25,0 Mbps
3
8
4:2:0
50
2
24,0×
10,80 GB
total_bits: 92 794 009 544 bits = 10,80 GB
MBpHR=11055 = 92 736 061 440 bits = 11 GB @ 1920 by 1080
codecCompressionRatio: 23,968
Photo-JPEG
3
8
4:2:0
50
2
17,7×
14,66 GB
total_bits: 125 907 747 007 bits = 14,66 GB
MBpHR=15000 = 125 829 120 000 bits = 15 GB @ 1920 by 1080
codecCompressionRatio: 17,664

Paramètres individuels

Mbps limited 25,0 Mbps
3
10
4:2:2
67
67
39,3×
10,48 GB
total_bits: 90 000 000 000 bits = 10,48 GB
MBpHR=441938 = 3 707 244 642 304 bits = 432 GB @ 1920 by 1080
codecCompressionRatio: 0,999
Based on Compression Ratio1 030,4 Mbps
3
10
4:2:2
67
67
1,0×
431,85 GB
total_bits: 3 709 561 193 130 bits = 431,85 GB
MBpHR=441938 = 3 707 244 642 304 bits = 432 GB @ 1920 by 1080
codecCompressionRatio: 0,999
Down here you can change suggested setting to deviate from above presets (provided the codec supports such settings)

Codex Bit Rate “Clamp” Info

 Mbps

Canaux de cou­leur Info

Profon­deur de couleur Info

Sous-­échantillonnage de la chrominance Info

Codec Compression Info

×

Real-World vs. Simplified In practice, actual file sizes also depend on factors like codec overhead, motion compression, metadata, etc.

Calcul du format d'une image vidéo

Step 1: Determine Total Pixels Per Frame Info

The resolution of the video determines the number of pixels per frame:

Nombre total de pixels par image (largeur * hauteur)

1920 × 1080 = 2 073 600 pixel   (2,1 Mégapixels)

Step 2: Add Color Channels (RGB or YUV) Info

Each pixel has color information, typically in RGB or YUV format:

  • RGB/YUV typically has 3 channels (Red, Green, Blue; respectfully Y, U, V).
  • Thus, for our selection multiply by 3 to create a data point per color channel

Total Pixel Count × Number of Color Channels = Total Color-Sample Points

2 073 600 × 3 = 6 220 800

Step 3: Multiply by Bit Depth (Color Depth) Info

Each color channel has a bit depth (e.g., 8-bit, 10-bit, or 12-bit ... per channel):

Total Pixel Data × Bit Depth per Channel = Total Bits

  • With a 10-bit color video:

6 220 800 × 10 bits = 62 208 000 bits per frame

  • Convert to bytes to make numbers more manageable
    (8 bits = 1 byte):

62 208 000 ÷ 8 = 7 776 000 bytes per frame ≈ 7,42 MB

Step 4: Apply Chroma Subsampling Compression Info

Not all color information is stored for every pixel. Chroma subsampling reduces color data storage -- applies only to color video and not to grayscale (black-and-white) video:

Raw Frame Size × (Chroma Factor/12) = Effective Frame Size

Chroma Subsampling Factors:

  • 4:4:4 → Full Color (Factor = 12)
  • 4:2:2 → Medium Compression (Factor = 8)
  • 4:2:0 → High Compression (Factor = 6)
  • 4:1:1 → High Compression (Factor = 6)

For 4:2:2 it is a factor 8/12:

7,42 MB × (8/12) ≈ 4,94 MB per frame

Adding Running Time (Frame Count) and a Codec Type

Step 5: Total Frames Count with 29,97 f/s Info

Frames per second = 29,97

Running time in seconds = 3600

Total number of frames:

29,97 × 3600 = 107892 (approx.)

Step 6: Uncompressed File Size Info

Total number of frames = 107892

Size per frame = 4,94 MB

Multiply frames by MB/frame:

107892 × 4,94 MB ≈ 520,90 GB

Step 7: Compressed File Size (Using Codec) Info

Size set through codec compression 1:1  (1×)

520,90 GB ÷ 1 ≈ 520,90 GB

or Step 8: Compressed File Size (Using Mbps) Info

Size limited by data rate clamp-down at 25 Mbps =

Running time in seconds = 3600

3,13 Byte × 3600 ≈ 10,48 GB

Provider Stream Video Bitrate (kbps) Disc Bitrate (Mbps)
360p 480p 720p 1080p 4K DVD Blu-ray Ultra HD Blu‐ray (4K)
BBC 800 1500 3200   15–25 Mbps
(H.265/VP9/AV1)
max

9.5 Mbps

3 Mbps

to

9.5 Mbps
max

48 Mbps
(video and audio)

40 Mbps
(video only)
max

128 Mbps
(video and audio)

82–100 Mbps
(video only)
ESPN 1400 2000 2800  
Hulu 700 1000 2500
3200
 
iTunes   1500 4000 5000
Netflix 560 1050
1750
2350
3600
4800
Vimeo 800   2000 4500
YouTube 500 1000 2000 3500
  896 1216
1536
2496
3072
4992
7552


This calculator will help you calculate the file size your video project will require. The following items will influence your final file size:

frame size: height times length of display image; which results in the total pixel count; e.i. High Definition 1080p (1,920/1,080) would result into 2,073,600 pixels per image.

chroma subsampling: This sample rate part is a bit confusing to a laymen. Just think of it like this. A 4:4:4 sample rate equals to 4+4+4=12 and 4:2:2 equals to 4+2+2=8 sample rate. So in the first scenario one has 12 values to "store" and in the second 8. Also not that more is not always better; because it requires more data storage. Keep in mind that a DVD and a Blu-ray Disc have a sample rate of 4:2:0, Digital Betacam is 4:2:2. 4:4:4 sample rate is normally complete overkill.

bit rate: the color depth (8-bit or 10-bit). 8-bit holds 256 colors and is amazingly "satisfying" to the human eye for video. 10-bit (1024 colors) is sometimes available on "higher-end" professional gear; which allows to make color adjustments without finding the limitations of that limited 8-bit range.

frames_per_second: the frame reight (frames per second)

video codecs: these video codecs may include a compression envelop and further reduce the file size. It will very much depend what type of compression format the codec uses. H.264/MPEG-4 AVC HP may save from around 30% to nearly 67%, depending on the video sequence. The average bit-rate reduction is about 45%.

running time: duration of saved (or recorded) material

All this will influance the size of data, and the bit rate (data stream handling power of your computer and hard drive.)

VHS MiniDV DVD
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