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RealVideo at a glance
RealVideo
RealNetworks released the first RealVideo codec in February 1997 as part of RealPlayer 5, pioneering internet video streaming when bandwidth was extremely limited and competing with Microsoft's Windows Media and Apple's QuickTime Streaming.
HEVC/H.265 at a glance
HEVC/H.265
The Joint Collaborative Team on Video Coding developed HEVC through ITU-T VCEG and ISO MPEG, building on H.264 coding tools while introducing 64×64 coding tree units, advanced motion compensation, and scalable/multiview extensions.
Format comparison
| Feature | RealVideo | HEVC/H.265 |
|---|---|---|
| File type | Video | Video |
| Extensions |
|
|
| MIME type |
|
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| Created year | 1997 | 2013 |
| Inventor | RealNetworks | Joint Collaborative Team on Video Coding (JCT-VC) — ITU-T and ISO/IEC |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Supported | Not supported |
| Multitrack support | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Supported |
| Streaming ready | Supported | Supported |
When to use each format
When to use RealVideo
- Your source file is already in RealVideo.
- Preserve source expectations before exporting to HEVC/H.265.
- RealVideo is commonly used in video workflows.
When to use HEVC/H.265
- Your target workflow expects HEVC/H.265.
- Improve delivery compatibility with HEVC/H.265.
- HEVC/H.265 is commonly used in video workflows.
FAQs
Why convert RealVideo to HEVC/H.265?
Convert to HEVC when the target environment can decode H.265 and the goal is to reduce bitrate for 4K, HDR, or long-form high-resolution video without giving up too much quality.
It is a strong target for premium streaming, UHD masters, efficient device delivery, and storage-sensitive archives that prioritize compression efficiency.
What changes when converting RealVideo to HEVC/H.265?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to HEVC/H.265 removes layer support. Moving to HEVC/H.265 adds HDR content.
What should I review after converting RealVideo to HEVC/H.265?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.