When a quote says "H.265" and another says "H.264," most owners nod and move on. The difference, though, can decide whether your recorder holds 30 days of footage or 55. Both are video compression standards, the methods cameras use to squeeze a stream of pictures into manageable files. H.265, also called HEVC, is the newer and more efficient one. H.264 is older and nearly universal. This guide explains what the difference means in plain terms, how much storage it can save, when it matters, what to watch out for with marketing extras like "H.265+" and how to ask for the right thing.
This is general information. Actual savings depend on the camera, the scene and the settings. Ask your installer to calculate storage for your exact system.
1. The Short Version
| Factor | H.264 | H.265 (HEVC) |
|---|---|---|
| Efficiency | Good | Better, often needing noticeably less storage for the same quality |
| Compatibility | Almost everything | Most modern cameras, recorders and apps |
| Processing load | Lower | Higher |
| Best for | Older equipment, simple setups | New systems, many cameras, long retention |
| Typical risk | Uses more storage | Compatibility with old viewers |
2. What Compression Does
Raw video is enormous. A single high-resolution camera produces far more data than any affordable hard drive could hold for weeks. Compression reduces the size by recording the changes between frames rather than every pixel of every frame. A still scene, like an empty hallway, compresses extremely well. A busy scene with leaves blowing and cars passing compresses less. Different standards use different mathematical techniques to do this, and newer ones do it more cleverly.
3. How H.265 Improves on H.264
H.265 uses larger, more flexible blocks and better prediction methods, which lets it describe the same picture with less data. In practice, at similar visual quality, H.265 often needs noticeably less bandwidth and storage than H.264. The savings vary widely by scene, so I won't quote a single number. For a quiet scene, the improvement can be substantial. For a busy one it may be smaller. The benefit is most noticeable with high-resolution cameras, 4 MP and above, and in systems with many cameras or long retention.
4. Why This Matters for Storage
Storage is the main practical cost of video. A simple formula helps: total GB = cameras × bitrate in Mbps × 10.8 × days. A single camera at 4 Mbps uses about 43 GB a day. Eight cameras at 4 Mbps for 30 days use about 10,368 GB, roughly 10 TB. If H.265 allows the same quality at 2.5 Mbps, eight cameras for 30 days use about 6,480 GB, roughly 6.5 TB. That difference is the gap between a 10 TB drive and a 6 TB drive, or between 30 days and about 48 days on the same 10 TB drive. Our guide on sizing NVR storage walks through the math.
5. Bandwidth and Network Load
Compression also affects the network. Lower bitrates mean less load on switches, Wi-Fi and internet links. For remote viewing over a slow upload connection, H.265 can mean smoother video. For systems that send footage to the cloud, lower bitrates can save on bandwidth and cloud fees. In a building with a modest network, this can be the difference between smooth and stuttering video.
6. Compatibility
H.264 plays almost everywhere. H.265 support is now common but not universal. Older recorders, some phones, some web browsers and older software may not decode it smoothly. If you use a mixed system with old and new equipment, check compatibility. Recorders usually handle it, but exported clips may not play on every computer unless you include a viewer. When you export footage for police or insurers, include the viewer or a converted copy. Our guide on export formats explains how.
7. Processing and Power
H.265 requires more processing to encode and decode. Modern cameras and recorders handle it easily. Older recorders may struggle to display many H.265 streams at once, producing choppy playback or high CPU use. If you are upgrading cameras but keeping an old recorder, check that it supports the codec and the number of channels at your chosen resolution.
8. "H.265+," "Smart Codec" and Friends
Manufacturers add proprietary layers with names like H.265+, Smart H.265, ZIPSTREAM or Ultra codec. They typically reduce bitrate further by lowering quality in static regions and keeping detail where motion occurs. They can save a lot of storage in quiet scenes. The trade-offs: they sometimes soften backgrounds, may behave unpredictably in busy scenes, and are often tied to a specific brand's recorder. They're worth considering if you need long retention, but verify with sample footage. Do not assume a savings claim on the box applies to your property.
9. Constant vs. Variable Bitrate
Cameras can record at a constant bitrate (CBR), which keeps data use predictable, or a variable bitrate (VBR), which varies it with the scene. VBR with a sensible cap typically gives better quality per gigabyte. CBR is easier to plan storage for. Our guide on CBR vs. VBR explains how to choose. The compression standard and the bitrate setting work together; a good standard at a starved bitrate still looks bad.
10. Don't Sacrifice Quality for Days
It's tempting to crank down quality to stretch retention. Resist. Footage that is blocky or smeared when a face or plate matters defeats the purpose. A better approach is to size storage for the quality you need, using H.265 to reduce the cost. Tune the key cameras, such as the front door and plate camera, for higher quality, and allow quieter cameras to run lighter. Our guides on frame rate and bitrate show how.
11. Practical Recommendations
New systems. Choose H.265 on cameras and recorder, unless there's a reason not to.
Mixed or old equipment. Check what the recorder supports. H.264 may be the safe common ground.
Remote viewing. H.265 helps over slow connections, if the app decodes it.
Exports. Include a viewer or a converted H.264 MP4 copy for third parties.
Warranty and support. Ask whether the manufacturer supports your chosen settings.
12. News Context
Retention matters because crimes are often discovered late. In September 2026, News 12 reported that NYPD sought two suspects in 19 commercial burglaries across 16 Brooklyn neighborhoods. In May 2026, News 12 Long Island reported on a proposed Suffolk County law that would require businesses to turn over security footage to aid police investigations; I have not verified its final status. Either way, having enough days of good footage is the point of efficient compression.
NYPD reported burglary down 19.5% citywide in May 2026 compared with May 2025 (NYPD).
13. Costs
Compression itself is rarely a separate charge, but it influences the hardware you buy. Planning ranges in 2026 for professionally installed systems: four-camera home system with 30 days of storage, $1,600 to $3,600; eight-camera business system, $3,000 to $6,800; sixteen-camera commercial system, $6,500 to $13,000; recorder with RAID and larger drives, $800 to $3,500; extra drive, $150 to $900 depending on capacity. These are planning ranges, not quotes.
14. A Sample Plan
A restaurant in Queens has eight 4 MP cameras and wants 45 days. At H.264 and about 4 Mbps per camera, that would require about 15.5 TB. With H.265 at about 2.5 Mbps, it needs about 9.7 TB, so a 12 TB drive suffices with headroom. The installer sets higher quality on the register and door cameras, lighter settings on storage and hallway cameras, and tests export playback on a standard laptop. Estimated cost: $4,200 to $9,800.
15. Questions to Ask Your Installer
- Will the cameras and recorder use H.265, and why or why not?
- How many days of storage will I have, and can you show the calculation?
- Will exported clips play on a standard computer, and will you include a viewer?
- Are any proprietary "plus" codecs in use, and what are their limits?
- Which cameras will run at higher quality?
- How easy is it to add storage later?
See our local pages for security camera installation in Staten Island, commercial camera installation in Brooklyn, business camera installation in Queens and our services page.
Want your storage calculated properly? Revolvis will walk the property with you and mark the spots.
More From Revolvis
Cameras are one layer of a secure property. The same in-house crew also handles the rest:
- Keyless entry installation and smart lock installation
- Access control systems and commercial access control
- Video doorbells and intercoms
- Alarm system installation
- Complete unified security
Learn more about Revolvis, meet the team, see all services, browse the blog or contact us.
Areas We Serve
Revolvis installs residential and commercial camera systems across the New York metro area. Every borough and county has its own building stock, rules and wiring challenges, so the plan for a Queens two-family is not the plan for a Manhattan co-op.
- Staten Island: houses, detached garages and shop fronts. See security camera installation in Staten Island.
- Brooklyn: brownstones, row houses and storefronts. See security camera installation in Brooklyn.
- Queens: attached brick homes, two-families and busy commercial strips. See security camera installation in Queens.
- The Bronx: pre-war buildings, bodegas and warehouses. See security camera installation in the Bronx.
- Manhattan: co-ops, condos, offices and retail. See security camera installation in Manhattan.
- Long Island: Nassau County and Suffolk County.
- New Jersey: Jersey City, Newark, Hoboken and nearby towns.
The full list is on the service areas page.
Get a Custom Quote After a Site Visit
Revolvis prices every job after a site visit, because the building sets the cost as much as the equipment does. A few things make the estimate faster and more accurate:
- The address and property type: house, apartment, co-op, condo, storefront or warehouse.
- Which doors, sides and areas you want covered, and what worries you most.
- Photos of those spots and any spots where you already have cabling or power.
- How many days of footage you want to keep and whether you want to watch on your phone.
- Any landlord, board, lender or insurer requirement.
Call 347-258-9165 or use the contact page to book a site visit. The quote you receive is written and itemized, so you can compare it line by line.
Frequently Asked Questions
Is H.265 better than H.264? For storage and bandwidth efficiency, usually yes. H.264 is more universally compatible.
How much storage does H.265 save? It varies by scene and settings. Savings can be substantial, but ask for a calculation for your system.
Will H.265 video play on my phone? Most modern phones and apps support it, but check. Include a viewer or converted copy when exporting.
What is H.265+? A manufacturer's proprietary add-on that further reduces bitrate, often at some cost in background detail.
Does better compression lower quality? Not if configured well. Starving the bitrate lowers quality, whatever the codec.
Should I choose it for a new system? Usually yes, if the cameras and recorder support it.
Ready for a custom quote? Call Revolvis at 347-258-9165 for a site visit and a written, itemized estimate.
Safety note: A camera system supports, but does not replace, good locks, lighting, alarms and everyday habits. If you are in danger or witnessing a crime, call 911. Prices and legal summaries in this guide are general information for the New York metro area, not an offer or legal advice. A written quote after a site visit governs your actual price, and for legal questions you should confirm with the agencies linked in the article or a licensed attorney.