<aside> 👉 If this all sounds too technical, just go by the examples in our Video Requirements' "Video Codec" section.

</aside>

To determine the technical video stream quality, Filmhub uses the term Compression Rate. It is calculated by dividing the pixels per second (pixel rate) by the bits per second (bit rate):

$$ \Sigma_{comp} = \frac{width * height * framerate}{video\ bitrate} $$

Filmhub specifies one maximum accepted Compression Rate per video codec. Videos with a higher Compression Rate will fail listing review.

As simple reference, the SD, HD and 4K columns show the rule-of-thumb minimum bitrate or codec variant requirements.

Example Calculations

<aside> 💡 Resolution refers to the stored pixel width and height, not displayed, for anamorphic (non-square) pixel aspect ratios.

</aside>

1080p, 20 Mbps

$$ \frac{\overbrace{1920 * 1080}^{video\ resolution} * \overbrace{25}^{frame\ rate}}{\underbrace{20\,000\,000}_{bitrate\ in\ bps}} = 2.6 $$

720p, 10 Mbps

$$ \frac{1280 * 720 * 25}{10\,000\,000} = 2.3 $$

SD (NTSC), 5 Mbps

$$ \frac{720 * 480 * 29.97}{5\,000\,000} = 2.1 $$

SD (PAL), 5 Mbps

$$ \frac{720 * 576 * 25}{5\,000\,000} = 2.1 $$


Untitled Database

Inherent Compression Rates of Common Codecs

Apple ProRes

Apple ProRes has inherent, non-adjustable bitrates, depending on ProRes variant, resolution and frame rate. There are various variants including ProRes 422, ProRes 422 HQ, ProRes 4444, ProRes XQ (see also About Apple ProRes on Apple Support).

<aside> 🛑 Apple ProRes 422 LT and Proxy are not accepted.

ProRes 4444, 4444 XQ and RAW – while high quality – are not ideal because of unnecessarily high storage needs Currently acceptable but some may fail for filesize >600GB.

</aside>

Notes to below: