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Minimum bandwidth requirements for multi-channel video capture
Article ID: 000020025
Pro Capture Family , USB Capture Gen 1 Family , USB Capture Gen 2 Family, USB Capture Plus Family, USB Capture Pro Family
Bandwidth Requirements
When multiple channels of video are being captured with Magewell capture device, it is necessary to ensure that the transmission bandwidths of the capture devices and the computer's bus (PCIe or USB bus) are sufficient for the total data of multi-channel video streams; otherwise, frame drop will occur.
The maximum transmission bandwidths of PCIe interface and USB interface are:
- PCIe x1 Gen 2: ~400MB/s
- PCIe x4 Gen 2: ~1600MB/s
Note: Although Pro Capture HDMI 4K, Pro Capture AIO 4K, and Pro Capture DVI 4K Capture cards use the PCIe x4 Gen 2 interfaces, their actual transmission bandwidths are only ~1200MB/s.
- USB 3.2 bus: ~1600MB/s
- USB 3.1 bus: ~800MB/s
- USB 3.0 bus: ~400MB/s
- USB 2.0 bus: ~50MB/s
Capture Format Reference Table
When capturing multi-channel video streams, you can refer to the following table to select the video capture format.
Color Format: RGB 24 |
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|---|---|---|---|---|---|---|
| Resolution | 15.00 fps | 25.00 fps | 30.00 fps | 50.00 fps | 60.00 fps | 144.00 fps |
| 720x480 | ~16 MB/s | ~26 MB/s | ~32 MB/s | ~52 MB/s | ~63 MB/s | — |
| 720x576 | ~19 MB/s | ~32 MB/s | ~38 MB/s | ~63 MB/s | ~75 MB/s | — |
| 800x600 | ~22 MB/s | ~36 MB/s | ~44 MB/s | ~72 MB/s | ~87 MB/s | — |
| 1024x768 | ~36 MB/s | ~60 MB/s | ~70 MB/s | ~118 MB/s | ~142 MB/s | — |
| 1280x720 | ~42 MB/s | ~70 MB/s | ~83 MB/s | ~139 MB/s | ~166 MB/s | — |
| 1280x1024 | ~60 MB/s | ~99 MB/s | ~118 MB/s | ~197 MB/s | ~236 MB/s | — |
| 1440x900 | ~59 MB/s | ~98 MB/s | ~117 MB/s | ~195 MB/s | ~234 MB/s | — |
| 1920x1080 | ~94 MB/s | ~156 MB/s | ~187 MB/s | ~312 MB/s | ~374 MB/s | ~896 MB/s |
| 2560x1440 | ~166 MB/s | ~277 MB/s | ~332 MB/s | ~553 MB/s | ~664 MB/s | ~1593 MB/s |
| 3840x2160 | ~374 MB/s | ~623 MB/s | ~747 MB/s | ~1245 MB/s | ~1493 MB/s | — |
| 4096x2160 | ~399 MB/s | ~664 MB/s | ~797 MB/s | ~1328 MB/s | ~1593 MB/s | — |
Color Format: YUY2, UYVY, YVYU |
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|---|---|---|---|---|---|---|
| Resolution | 15.00 fps | 25.00 fps | 30.00 fps | 50.00 fps | 60.00 fps | 144.00 fps |
| 720x480 | ~11 MB/s | ~18 MB/s | ~22 MB/s | ~35 MB/s | ~42 MB/s | — |
| 720x576 | ~13 MB/s | ~22 MB/s | ~26 MB/s | ~42 MB/s | ~50 MB/s | — |
| 800x600 | ~15 MB/s | ~24 MB/s | ~30 MB/s | ~48 MB/s | ~58 MB/s | — |
| 1024x768 | ~24 MB/s | ~40 MB/s | ~47 MB/s | ~79 MB/s | ~95 MB/s | — |
| 1280x720 | ~28 MB/s | ~47 MB/s | ~56 MB/s | ~93 MB/s | ~111 MB/s | — |
| 1280x1024 | ~40 MB/s | ~66 MB/s | ~79 MB/s | ~132 MB/s | ~158 MB/s | — |
| 1440x900 | ~40 MB/s | ~66 MB/s | ~78 MB/s | ~130 MB/s | ~156 MB/s | — |
| 1920x1080 | ~63 MB/s | ~104 MB/s | ~125 MB/s | ~208 MB/s | ~250 MB/s | ~598 MB/s |
| 2560x1440 | ~110 MB/s | ~185 MB/s | ~221 MB/s | ~368 MB/s | ~443 MB/s | ~1063 MB/s |
| 3840x2160 | ~250 MB/s | ~416 MB/s | ~498 MB/s | ~830 MB/s | ~996 MB/s | — |
| 4096x2160 | ~266 MB/s | ~442 MB/s | ~531 MB/s | ~886 MB/s | ~1062 MB/s | — |
Color Format: NV12, I420 |
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|---|---|---|---|---|---|---|
| Resolution | 15.00 fps | 25.00 fps | 30.00 fps | 50.00 fps | 60.00 fps | 144.00 fps |
| 720x480 | ~8 MB/s | ~13 MB/s | ~16 MB/s | ~26 MB/s | ~32 MB/s | — |
| 720x576 | ~10 MB/s | ~16 MB/s | ~19 MB/s | ~32 MB/s | ~36 MB/s | — |
| 800x600 | ~11 MB/s | ~18 MB/s | ~22 MB/s | ~36 MB/s | ~44 MB/s | — |
| 1024x768 | ~18 MB/s | ~30 MB/s | ~35 MB/s | ~59 MB/s | ~71 MB/s | — |
| 1280x720 | ~21 MB/s | ~35 MB/s | ~42 MB/s | ~70 MB/s | ~83 MB/s | — |
| 1280x1024 | ~30 MB/s | ~50 MB/s | ~59 MB/s | ~99 MB/s | ~118 MB/s | — |
| 1440x900 | ~30 MB/s | ~49 MB/s | ~59 MB/s | ~98 MB/s | ~117 MB/s | — |
| 1920x1080 | ~47 MB/s | ~78 MB/s | ~94 MB/s | ~156 MB/s | ~187 MB/s | ~448 MB/s |
| 2560x1440 | ~83 MB/s | ~139 MB/s | ~166 MB/s | ~277 MB/s | ~332 MB/s | ~797 MB/s |
| 3840x2160 | ~187 MB/s | ~312 MB/s | ~374 MB/s | ~623 MB/s | ~747 MB/s | — |
| 4096x2160 | ~200 MB/s | ~332 MB/s | ~399 MB/s | ~664 MB/s | ~797 MB/s | — |
Color Format: P010 |
||||||
|---|---|---|---|---|---|---|
| Resolution | 15.00 fps | 25.00 fps | 30.00 fps | 50.00 fps | 60.00 fps | 144.00 fps |
| 720x480 | ~16 MB/s | ~26 MB/s | ~32 MB/s | ~52 MB/s | ~63 MB/s | — |
| 720x576 | ~19 MB/s | ~32 MB/s | ~38 MB/s | ~63 MB/s | ~75 MB/s | — |
| 800x600 | ~22 MB/s | ~36 MB/s | ~44 MB/s | ~72 MB/s | ~87 MB/s | — |
| 1024x768 | ~36 MB/s | ~60 MB/s | ~70 MB/s | ~118 MB/s | ~142 MB/s | — |
| 1280x720 | ~42 MB/s | ~70 MB/s | ~83 MB/s | ~139 MB/s | ~166 MB/s | — |
| 1280x1024 | ~60 MB/s | ~99 MB/s | ~118 MB/s | ~197 MB/s | ~236 MB/s | — |
| 1440x900 | ~59 MB/s | ~98 MB/s | ~117 MB/s | ~195 MB/s | ~234 MB/s | — |
| 1920x1080 | ~94 MB/s | ~156 MB/s | ~187 MB/s | ~312 MB/s | ~374 MB/s | ~896 MB/s |
| 2560x1440 | ~166 MB/s | ~277 MB/s | ~332 MB/s | ~553 MB/s | ~664 MB/s | ~1593 MB/s |
| 3840x2160 | ~374 MB/s | ~623 MB/s | ~747 MB/s | ~1245 MB/s | ~1493 MB/s | — |
| 4096x2160 | ~399 MB/s | ~664 MB/s | ~797 MB/s | ~1328 MB/s | ~1593 MB/s | — |
Color Format: Y210 |
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|---|---|---|---|---|---|---|
| Resolution | 15.00 fps | 25.00 fps | 30.00 fps | 50.00 fps | 60.00 fps | 144.00 fps |
| 720x480 | ~21 MB/s | ~35 MB/s | ~42 MB/s | ~70 MB/s | ~83 MB/s | — |
| 720x576 | ~25 MB/s | ~42 MB/s | ~50 MB/s | ~83 MB/s | ~100 MB/s | — |
| 800x600 | ~29 MB/s | ~48 MB/s | ~58 MB/s | ~96 MB/s | ~116 MB/s | — |
| 1024x768 | ~48 MB/s | ~79 MB/s | ~95 MB/s | ~158 MB/s | ~189 MB/s | — |
| 1280x720 | ~56 MB/s | ~93 MB/s | ~111 MB/s | ~185 MB/s | ~222 MB/s | — |
| 1280x1024 | ~79 MB/s | ~132 MB/s | ~158 MB/s | ~263 MB/s | ~315 MB/s | — |
| 1440x900 | ~78 MB/s | ~130 MB/s | ~156 MB/s | ~260 MB/s | ~312 MB/s | — |
| 1920x1080 | ~125 MB/s | ~208 MB/s | ~249 MB/s | ~415 MB/s | ~498 MB/s | ~1195 MB/s |
| 2560x1440 | ~222 MB/s | ~369 MB/s | ~443 MB/s | ~738 MB/s | ~885 MB/s | ~2124 MB/s |
| 3840x2160 | ~498 MB/s | ~830 MB/s | ~996 MB/s | ~1659 MB/s | ~1991 MB/s | — |
| 4096x2160 | ~531 MB/s | ~885 MB/s | ~1062 MB/s | ~1770 MB/s | ~2124 MB/s | — |
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