Camera codecs decide how much of the sensor’s signal survives the trip to your edit bay. The common advice — shoot the highest bitrate your card can take — treats bitrate as a proxy for quality, but a well-exposed 10-bit Long-GOP file can grade better than a badly exposed RAW file, and a codec that chokes your laptop costs more time than it saves. This guide explains what each codec throws away and which settings to choose for travel, interviews, events, narrative and social video.
By the end you should be able to pick a codec from the brief, not the spec sheet. The goal is a decision you can defend to a client, not a specification you can quote in a forum.
The short version
- Bitrate is a budget, not a quality score. Encoder efficiency, bit depth and chroma sampling decide what survives.
- 10-bit capture is the useful threshold for log footage and gradients; 8-bit is fine for direct-to-social delivery in good light.
- Long-GOP files are small and slow to scrub; All-I files are large and easy to edit.
- ProRes is compressed, not uncompressed, and it is usually the fastest route through a laptop edit.
- RAW buys latitude in post, not immunity from bad exposure.
What a codec actually throws away
Video compression attacks spatial detail, temporal redundancy and colour precision. Intra-frame codecs compress each frame independently. Inter-frame codecs describe changes from one frame to the next, which is why a static interview compresses far better than a handheld walk through a market.
Bit depth sets how many steps each colour channel can record. Eight-bit gives 256 levels per channel; 10-bit gives 1,024, four times as many. Chroma subsampling throws away colour resolution: 4:2:0 keeps a quarter of the chroma samples of 4:4:4, while 4:2:2 keeps half. Those decisions, more than the codec’s name, determine how much latitude you have when the footage reaches the grade.
The camera codec ladder
| Codec | Typical 4K30 bitrate | Bit depth / chroma | Edit load | Best for |
|---|---|---|---|---|
| H.264 | 50–100 Mbps | 8-bit 4:2:0 | Light | Social, quick turnaround |
| H.265 / HEVC | 50–100 Mbps | 10-bit 4:2:0 | Heavy decode | Travel, mirrorless default |
| ProRes 422 LT | ~328 Mbps | 10-bit 4:2:2 | Light | Interviews, events |
| ProRes 422 | ~471 Mbps | 10-bit 4:2:2 | Light | General production |
| ProRes 422 HQ | ~707 Mbps | 10-bit 4:2:2 | Light | High-end delivery |
| ProRes RAW | ~1–2 Gbps | 12-bit RAW | GPU-heavy | VFX, heavy grade |
| BRAW / N-RAW | Varies | 12-bit RAW | GPU-heavy | Narrative, high contrast |
H.264 is the universal fallback. Every browser, phone and television decodes it in hardware, making it the safest delivery format. Its weakness is 8-bit colour: gradients and log footage can band before the grade.
H.265, or HEVC, is roughly 30–50% more efficient than H.264 at the same visual quality. It is the default on most mirrorless cameras and drones, often at 10-bit 4:2:0. The cost is decode complexity: 4K60 H.265 can bring a thin laptop to its knees.
ProRes is Apple’s intraframe family: 10-bit 4:2:2, visually lossless through several generations, and far larger than H.265. Every frame stands alone, so scrubbing and colour work feel immediate. LT, standard and HQ trade bitrate for headroom; HQ is the delivery-grade option.
RAW records sensor data before demosaicing and much of the camera’s processing. Depending on the format, white balance and ISO can be adjusted in post, and highlights may be recoverable if not clipped. BRAW and N-RAW are compressed; CinemaDNG is open but storage-heavy; ProRes RAW sits inside Apple’s ecosystem. Check editor support first.
All-I versus Long-GOP: the editing bottleneck
Long-GOP stores one I-frame every second or two and describes the frames in between. It is efficient, but seeking to an arbitrary frame requires decoding from the nearest I-frame, which is why H.265 timelines can stutter even when the file plays smoothly. All-I encodes every frame independently. Files are three to eight times larger, but scrubbing is immediate and the CPU works less.
The practical result is counter-intuitive: the codec that is harder on your card can be easier on your computer. If you edit on a laptop, ProRes LT or 10-bit All-I can be faster to work with than heavily compressed H.265, even though it consumes several times the storage.
8-bit versus 10-bit, and why 4:2:2 matters
Eight-bit footage has 256 levels per channel. In a clear sky or soft wall, that is not always enough to avoid banding, and it leaves little room to push a log profile. Ten-bit has four times the levels, which is why it is the sensible minimum for grading and HDR delivery.
Chroma subsampling is separate. 4:2:0 discards three-quarters of the colour information, acceptable for delivery but risky for green screen, skin-tone work or compositing. 4:2:2 keeps half and is the broadcast and events standard. For social video, 10-bit 4:2:0 is usually enough; for a paid interview or narrative short, 4:2:2 buys insurance.
Storage maths and the real cost of a codec
The arithmetic is simple and brutal. A 150 Mbps 10-bit 4:2:2 4K signal writes about 18.75 MB/s, or 1.1 GB per minute. A 128 GB card therefore holds roughly 1 hour 50 minutes. ProRes 422 HQ at 707 Mbps writes about 88 MB/s, or 5.3 GB per minute; the same card holds about 24 minutes. A 1 TB drive holds roughly three hours of ProRes 422 HQ or around 22 hours of 100 Mbps H.265.
Those figures are illustrative, not measured, and exclude proxies and cache. Budget for the whole workflow: a codec that saves card space but forces a transcode has moved the cost, not removed it. Our SSD speed explainer covers offload and playback.
What to shoot for each job
| Shoot | Default codec | Why |
|---|---|---|
| Travel | H.265 10-bit 4:2:0, 100 Mbps | Small files, enough latitude for mild grades |
| Interviews | ProRes 422 LT or 10-bit 4:2:2 All-I | Skin tones, fast editing, reliable colour |
| Events | H.265 Long-GOP or ProRes LT, dual card | Long runtime with redundancy |
| Narrative | ProRes 422 HQ or RAW | Grade latitude and VFX flexibility |
| Social | H.265 10-bit 4:2:0, 4K30 | Efficient, crops well to vertical |
Travel rewards small files and long record times: 10-bit H.265 at around 100 Mbps is gradeable without filling a card before lunch. Interviews are the opposite, so ProRes LT or 10-bit All-I saves hours in the edit.
Events need redundancy more than resolution: record to two cards and choose a codec your machine can edit without proxies. Narrative work is where ProRes HQ and RAW earn their keep. Social delivery is least demanding; the vertical crop matters more.
What to actually do
Default to 10-bit H.265 4:2:0 at 100–150 Mbps. Switch to ProRes 422 LT for interviews and events where edit speed matters, and reserve ProRes HQ or RAW for grades and VFX that need it. Buy cards by sustained write speed, and record a ten-minute test clip before trusting a new one.
If you are choosing a camera around a workflow, our guide to the best hybrid cameras under $3,000 covers which bodies offer 10-bit internal recording. Our Sony A7 V vs Canon R6 III comparison shows how two hybrids differ in codec options, and the cameras and imaging section has more buying advice.
Common myths
“Higher bitrate always means a better image.” An efficient encoder at 100 Mbps can beat a lazy one at 200 Mbps, and noise or poor exposure will dominate either.
“RAW fixes bad exposure.” RAW recovers more highlight and shadow detail, but clipped highlights are gone and underexposure still means noise.
“ProRes is uncompressed.” It is compressed, but visually lossless and intraframe, which is why it edits so easily.
“10-bit is only for colourists.” Anyone grading log footage, shooting HDR or keying a subject benefits from the extra levels.
FAQ
Is H.265 better than H.264?
For image quality per bit, usually yes: HEVC is roughly 30–50% more efficient. But it is harder to decode and less compatible, so H.264 is the safer delivery format.
What is the difference between All-I and Long-GOP?
All-I encodes every frame independently, producing large files that scrub instantly. Long-GOP stores occasional full frames and describes the rest, producing smaller files that demand more decoding.
Do I need 10-bit for YouTube?
Not strictly, but it helps. YouTube accepts 10-bit uploads and benefits from cleaner gradients, especially with log footage.
Is ProRes worth it for travel?
Usually not. Travel favours small files and long record times, where 10-bit H.265 is the better trade. Use ProRes when editing speed matters more than capacity.
Which camera codec is best for low light?
Codec choice does not create light. A larger sensor and faster lens matter more; after that, 10-bit log preserves more shadow detail than 8-bit, if you expose carefully.
Bottom line
Camera codecs trade colour precision, editing speed and storage. Ten-bit H.265 is the right default for most shoots, ProRes is the practical upgrade when your edit bay is the bottleneck, and RAW is a specialist tool for high-contrast or effects-heavy work. Choose by the job, test the workflow before a paid shoot, and remember that exposure and lighting still matter more than the codec name.
Evidence note: technical figures are drawn from published codec specifications and manufacturer data. Storage examples are arithmetic illustrations, not measurements. Recommendations are editorial judgement.
