How is video file size calculated?

Video file size is calculated using the formula: File Size = (Video Bitrate + Audio Bitrate) × Duration ÷ 8. The video bitrate depends on resolution, frame rate, and codec. Our calculator uses industry-standard bitrate estimates for accurate results.

Why does the same video look different in file size across codecs?

Different codecs use different compression algorithms. Newer codecs like H.265, VP9, and AV1 achieve much better compression than H.264 while maintaining similar quality. ProRes is designed for editing, not distribution, so it has very high bitrates for maximum quality.

What codec should I use for the smallest file size?

AV1 offers the best compression efficiency, producing the smallest files for the same visual quality. However, encoding AV1 is slower and not all devices support playback. H.265/HEVC is a good balance of compression and compatibility. H.264 has the widest compatibility but produces larger files.

How much storage do I need for 1 hour of 4K video?

It depends on the codec: approximately 15.8 GB with H.264, 6.8 GB with H.265/HEVC, 6.8 GB with VP9, 83.3 GB with ProRes, and 5.4 GB with AV1 at 30fps. Use our calculator to get precise estimates for any combination of settings.

Are the file size estimates exact?

The estimates are based on typical bitrates for each resolution, frame rate, and codec combination. Actual file sizes may vary depending on video content complexity, encoder settings, and variable bitrate encoding. Videos with lots of motion or detail may be larger, while static content may be smaller.

What is the difference between video bitrate and audio bitrate?

Video bitrate is the amount of data used per second to encode the visual content, typically measured in Mbps (megabits per second). Audio bitrate is the data rate for the sound track, usually 128-320 kbps. Video bitrate makes up the vast majority of a video's total file size.

Does frame rate affect file size?

Yes, higher frame rates increase file size because more frames need to be encoded per second. A 60fps video is roughly 1.5-2x larger than a 30fps video at the same resolution and codec, not exactly double because modern codecs compress temporal redundancy efficiently.

What resolution should I use for YouTube or social media?

1080p (1920×1080) is the standard for most social media platforms and provides a good balance of quality and file size. 4K (3840×2160) is recommended for YouTube if you want the highest quality. 720p works well for shorter clips or when bandwidth is limited.

How much storage do I need for a 1-hour 1080p recording?

A 1-hour 1080p video at 30fps requires approximately 3.6GB with H.264, 2.3GB with H.265/HEVC, 2.3GB with VP9, 26.5GB with ProRes, and 1.8GB with AV1. The exact size depends on your codec choice and bitrate settings.

What's the difference between H.264 and H.265 file sizes?

H.265 (HEVC) typically produces files 35-50% smaller than H.264 at similar visual quality. For example, a 10-minute 4K video at 30fps is approximately 2.6GB with H.264 but only 1.1GB with H.265. The trade-off is that H.265 encoding is slower and not supported on all older devices.

How do I calculate video file size manually?

The formula is: File Size (MB) = (Video Bitrate in Mbps + Audio Bitrate in Mbps) × Duration in seconds ÷ 8. For example, an 8 Mbps video with 0.128 Mbps audio for 300 seconds (5 minutes): (8 + 0.128) × 300 ÷ 8 = 304.8 MB. Our calculator does this automatically for any combination of settings.

Connexion Commencer gratuitement

Calculateur de Taille de Fichier Vidéo

Estimez la taille de vos fichiers vidéo instantanément. Calculez vos besoins de stockage par résolution, débit, fréquence d'images, codec et durée.

Résolution

Fréquence d'images

Codec / Format

Durée

Heures

Minutes

Secondes

Mode de débit

Le débit est estimé automatiquement selon votre résolution, fréquence d'images et codec sélectionnés.

Taille estimée du fichier

304.8 MB

1920×1080 · 30fps · H.264 (MP4)

Débit vidéo

8.0 Mbps

Débit audio

128 kbps

Débit total

8.1 Mbps

Référence rapide — Taille par durée

Durée	Taille
1 min	61.0 MB
5 min	304.8 MB
10 min	609.6 MB
30 min	1.79 GB
1 hour	3.57 GB

Paramètres actuels

Résolution1080p (1920×1080)

Fréquence d'images30 fps

Codec / FormatH.264 (MP4)

Mode de débitAutomatique

Transformez votre enregistrement d'écran en démo produit soignée

Créez des vidéos produit et tutoriels professionnels avec le montage automatique par IA, transcriptions et zoom, et transformez vos visiteurs en clients naturellement.

Commencer gratuitement

Adopté par des fondateurs

Tailles de fichiers vidéo par plateforme

Chaque plateforme a ses propres limites de téléchargement et paramètres recommandés. Utilisez notre calculateur de taille vidéo pour planifier vos enregistrements.

YouTube Video Sizes

Plan your YouTube uploads with accurate file size estimates for every resolution.

1080p 10min: ~600MB (H.264) / ~375MB (H.265)
4K 10min: ~2.6GB (H.264) / ~1.1GB (H.265)
Max upload: 256GB or 12 hours
Recommended: H.264 MP4 for fastest processing

Instagram & TikTok Sizes

Estimate file sizes for short-form vertical video content on social platforms.

1080p 60s: ~60MB (H.264 at 8 Mbps)
1080p 90s: ~90MB (H.264 at 8 Mbps)
IG max: 4GB per video
TikTok max: 287MB mobile, 500MB desktop

Streaming & OTT Sizes

Calculate storage requirements for streaming workflows and video libraries.

720p 1hr: ~2.3GB (H.264) / ~1.4GB (H.265)
1080p 1hr: ~3.6GB (H.264) / ~2.3GB (H.265)
4K 1hr: ~15.8GB (H.264) / ~6.8GB (H.265)
Tip: Use H.265 or AV1 for 40-50% savings

WhatsApp & Discord Sizes

Check if your video will fit within messaging platform upload limits.

WhatsApp: 16MB limit (~20s at 1080p H.264)
Discord free: 25MB limit (~30s at 1080p H.264)
Discord Nitro: 500MB limit
Tip: Use our video compressor to fit within limits

ProRes & Editing Sizes

Plan storage for professional editing workflows with high-bitrate codecs.

1080p ProRes 1min: ~440MB
4K ProRes 1min: ~1.4GB
8K ProRes 1min: ~4.5GB
Tip: ProRes is 5-10x larger than H.264

Email Attachment Sizes

Estimate whether your video will fit as an email attachment.

Gmail: 25MB limit (~30s at 1080p H.264)
Outlook: 20MB limit (~25s at 1080p H.264)
Tip: Use 720p + H.265 for longer clips under 25MB
Alternative: Compress first, then attach

Comment calculer la taille d'un fichier vidéo

Estimez vos besoins de stockage vidéo en trois étapes simples avec notre calculateur gratuit. Résultats instantanés, aucune inscription nécessaire.

Étape 1

Choisissez résolution et fréquence d'images

Sélectionnez la résolution cible (720p à 8K) et la fréquence d'images (24 à 120 fps). Plus la résolution et la fréquence sont élevées, plus le fichier est volumineux.

Étape 2

Sélectionnez codec et durée

Choisissez un codec vidéo (H.264, H.265, VP9, ProRes ou AV1) et saisissez la durée. Les codecs modernes comme H.265 et AV1 produisent des fichiers plus légers.

Étape 3

Consultez la taille estimée

Obtenez instantanément la taille estimée ainsi qu'un tableau de référence rapide affichant les tailles pour les durées courantes selon vos paramètres.

Pourquoi utiliser notre calculateur de taille vidéo gratuit

Planifiez votre stockage vidéo, estimez les temps de transfert et comparez l'efficacité des codecs avec notre calculateur instantané.

Instant Calculations

Results update in real time as you adjust settings. Compare file sizes across resolutions, codecs, and durations instantly without any waiting.

5 Codecs Supported

Compare file sizes for H.264, H.265/HEVC, VP9, ProRes, and AV1. See exactly how much storage each codec requires for your video settings.

720p to 8K Support

Estimate file sizes for any resolution from 720p HD to 8K Ultra HD, plus custom resolutions. Perfect for planning storage needs for any project.

No Data Collected

All calculations happen in your browser. We don't collect any data, track your usage, or require any personal information to use the calculator.

Works on Any Device

Use our video bitrate calculator on any device with a web browser. No software download or installation required. Works on desktop and mobile.

Industry-Standard Estimates

Bitrate estimates are based on industry-standard encoding practices. Switch to manual mode for exact bitrate control when you need precise calculations.

Comparaison

Vibrantsnap vs autres calculateurs de taille vidéo

Découvrez comment notre calculateur gratuit de taille vidéo se compare aux autres outils populaires d'estimation de stockage.

Fonctionnalité

VibrantsnapToolstudOmnicalculatorCalcTool

Codecs supported

5 (H.264, H.265, VP9, ProRes, AV1)

Resolution presets

6 (720p to 8K + Custom)

Frame rate options

5 (24-120 fps)

Custom only

Limited

Auto bitrate estimation

Duration reference table

No sign-up needed

Real-time results

Outils vidéo gratuits associés

Découvrez d'autres outils gratuits Vibrantsnap pour créer, compresser et optimiser vos contenus vidéo.

Compresseur vidéo gratuit

Réduisez la taille de vos vidéos jusqu'à 80 % directement dans votre navigateur. Idéal pour Instagram, TikTok, YouTube, WhatsApp et Discord.

Générateur de miniatures gratuit

Extrayez des images et générez des miniatures depuis n'importe quelle vidéo. Idéal pour les miniatures YouTube, les aperçus réseaux sociaux et les captures vidéo.

Questions fréquentes

Les questions que l'on nous pose le plus avant de se lancer.

How is video file size calculated?
Video file size is calculated using the formula: File Size = (Video Bitrate + Audio Bitrate) × Duration ÷ 8. The video bitrate depends on resolution, frame rate, and codec. Our calculator uses industry-standard bitrate estimates for accurate results.
Why does the same video look different in file size across codecs?
Different codecs use different compression algorithms. Newer codecs like H.265, VP9, and AV1 achieve much better compression than H.264 while maintaining similar quality. ProRes is designed for editing, not distribution, so it has very high bitrates for maximum quality.
What codec should I use for the smallest file size?
AV1 offers the best compression efficiency, producing the smallest files for the same visual quality. However, encoding AV1 is slower and not all devices support playback. H.265/HEVC is a good balance of compression and compatibility. H.264 has the widest compatibility but produces larger files.
How much storage do I need for 1 hour of 4K video?
It depends on the codec: approximately 15.8 GB with H.264, 6.8 GB with H.265/HEVC, 6.8 GB with VP9, 83.3 GB with ProRes, and 5.4 GB with AV1 at 30fps. Use our calculator to get precise estimates for any combination of settings.
Are the file size estimates exact?
The estimates are based on typical bitrates for each resolution, frame rate, and codec combination. Actual file sizes may vary depending on video content complexity, encoder settings, and variable bitrate encoding. Videos with lots of motion or detail may be larger, while static content may be smaller.
What is the difference between video bitrate and audio bitrate?
Video bitrate is the amount of data used per second to encode the visual content, typically measured in Mbps (megabits per second). Audio bitrate is the data rate for the sound track, usually 128-320 kbps. Video bitrate makes up the vast majority of a video's total file size.
Does frame rate affect file size?
Yes, higher frame rates increase file size because more frames need to be encoded per second. A 60fps video is roughly 1.5-2x larger than a 30fps video at the same resolution and codec, not exactly double because modern codecs compress temporal redundancy efficiently.
What resolution should I use for YouTube or social media?
1080p (1920×1080) is the standard for most social media platforms and provides a good balance of quality and file size. 4K (3840×2160) is recommended for YouTube if you want the highest quality. 720p works well for shorter clips or when bandwidth is limited.
How much storage do I need for a 1-hour 1080p recording?
A 1-hour 1080p video at 30fps requires approximately 3.6GB with H.264, 2.3GB with H.265/HEVC, 2.3GB with VP9, 26.5GB with ProRes, and 1.8GB with AV1. The exact size depends on your codec choice and bitrate settings.
What's the difference between H.264 and H.265 file sizes?
H.265 (HEVC) typically produces files 35-50% smaller than H.264 at similar visual quality. For example, a 10-minute 4K video at 30fps is approximately 2.6GB with H.264 but only 1.1GB with H.265. The trade-off is that H.265 encoding is slower and not supported on all older devices.
How do I calculate video file size manually?
The formula is: File Size (MB) = (Video Bitrate in Mbps + Audio Bitrate in Mbps) × Duration in seconds ÷ 8. For example, an 8 Mbps video with 0.128 Mbps audio for 300 seconds (5 minutes): (8 + 0.128) × 300 ÷ 8 = 304.8 MB. Our calculator does this automatically for any combination of settings.

Essayez Vibrantsnap

Rejoignez des milliers de fondateurs et créateurs qui produisent des vidéos démo générant de vrais résultats.

Commencer gratuitement

Sans carte bancaire - Annulez à tout moment

“Moins de montage, plus d'impact. Des vidéos de qualité qui transforment l'attention en clients naturellement.”

Healsha

Fondateur de Vibrantsnap