CUR8 Tips:
- The max output for Scheduled Content is 1080p.
- Your video must be uploaded, in full, 4 hours before your stream start time.
- Compress your video file, as uncompressed files take longer to upload.
SC Video Specifications
- CUR8 supports just about any video file.
- When a format is not supported, all videos uploaded to CUR8 will be converted to square pixels. Regardless of format, all videos will be displayed at the correct aspect ratio.
- For Scheduled Content, compression should be done web-optimized at Live Stream bitrates of no more than 8Mbps.
- Scheduled Content can stream up to 1080p.
- Scheduled Content does not stream 4K.
What video files does CUR8 not accept?
- Audio files
- Image files
- Project Files such as iMovie project and dndproj are unsupported since these are not video files.
- Other non-video formats, such as
- MP3
- WAV
- WMA
- JPG
- PNG
What should my file size be?
For video file size, we recommend less than 20 GB.
- A 1.5-hour web optimized 1080p video file size will be 3-15Gb.
- CUR8 does accept larger files; however, larger files will require more time to upload to your box office and more time to be transcoded for end-user viewing.
- When uploading your video, we also highly recommend a hardline internet connection.
Should I compress the video file?
Yes.
While uploading an uncompressed video file to CUR8 is technically possible, it isn't a good idea in many cases. Uncompressed files take longer to upload. More importantly, they may not significantly improve visually over properly compressed files.
Review Compression Tutorials for well-known video editing programs.
Codecs
A codec is the format in which your video is encoded. We accept most major codecs, but for the best results, we recommend using one of the following:
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H.264 is a standard codec that balances high visual quality with efficient file size.
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- It's a great starting point for encoding your videos, ensuring you'll get the most out of your upload while minimizing upload and conversion times.
- Be sure to choose the "High Profile" H.264 setting instead of "Main Profile."
- Just so you know, the H.264 video codec only supports resolutions up to 4K.
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Apple ProRes 422 (HQ) This professional-quality codec ensures high quality for your encoded video but typically results in a much larger file size than H.264.
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- If you notice quality issues with your H.264 videos, using ProRes may produce a better result.
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H.265, or High-Efficiency Video Coding (HEVC), is the successor to H.264, which offers a smaller-sized file with high visual quality at the cost of increased encoding time.
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- This video codec supports resolutions up to 8K and high dynamic range (HDR) videos.
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Frame Rate
When preparing your video for upload, it's best to maintain the video's native frame rate when compressing your video.
- We will automatically reduce the frame rate if your footage exceeds 60 FPS (frames per second).
- Important: We recommend a constant frame rate throughout your entire video. Always choose "constant" frame rate instead of "variable" frame rate.
- While we accept many frame rates, these are the most commonly used:
Bit Rate
Bit rate (also known as data rate) controls the visual quality of the video and its file size. If your video editing software gives you the option, choose a "variable" bit rate and select a value from the ranges below. You can experiment with different rates if your file is too large or you're not happy with the quality of your source file.
Resolution
Videos come in all shapes and sizes, but these are some of the most common formats. We recommend compressing your video with a pixel aspect ratio of 1:1 or square pixels.
Color
We recommend uploading a file containing color space information for the most accurate color display on CUR8. Note: some software may not offer control over your color settings.
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Color Primaries and Matrix Coefficients
- We support all color primaries and matrice but recommend BT.2020 (Rec. 2020) or BT.709 (Rec. 709).
- You can use the same value for both color primary and matrix coefficients.
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Color Transfer Characteristics.
- We support a wide range of transfer characteristics for standard (SDR) videos, but for HDR videos, we only support the PQ (SMPTE 2084) or HLG transfer function.
- If using the PQ (SMPTE 2084) transfer function, please include the following metadata to ensure the most accurate display of your video's colors on all devices: Mastering Display Color Volume metadata (SMPTE 2086) and Content Light Level Information metadata (CEA 861.3). This metadata is usually added automatically in post-production.
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Bit Depth
- We support various bit depth but recommend a bit depth of 10 or greater for the highest-quality results. For high dynamic range (HDR) videos, your file needs a bit depth of 10 or greater to be considered HDR on CUR8.
Scan Type: Progressive
CUR8 converts all videos to progressive for playback. For best results, we recommend deinterlacing videos before uploading.
Audio Specifications
Channels: Stereo
- For best results, we recommend 2-channel Stereo audio.
- For any number of channels above 2, we will downmix your audio to 2 channels.
Codec: AAC-LC (Advanced Audio Codec)
For best results, we recommend using AAC-LC (low complexity) for the audio codec.
Data rate: 320 kbit/s
For best results, encode your audio at a constant rate of 320 kbit/s.
Sample rate: 48 kHz
- For best results, set your audio sample rate to 48 kHz.
- If your working setting is already less than or equal to 48 kHz, leave it as is.
- For any audio uploaded with a sampling rate over 48kHz, we will resample your audio to 48 kHz or below.
LUFS
- Max Integrated: –13 LUFS to –15 LUFS
- Max True Peak: -1dB
Additional Scheduled Content Considerations
End Your Video in Black
- We recommend adding 300 seconds of black to the end of your scheduled content video. Without the additional 300 seconds of black, your viewers may experience the end of your video being cut off when viewing. This is likely due to buffering. This means that the local internet was attempting to keep up with the content, but when the content ended, the rest of the video didn't play out.
- The additional 300 seconds of black will allow individual local networks the time to buffer and for viewers to see through to the end of the show without being cut off.
A Break for Your Viewer
Please consider adding an intermission, halftime, or break/pause to your video. This added video break will be the only opportunity for your viewers to step away from your event without missing a part.
Viewers cannot pause or rewind scheduled content.
Live Chat
You can engage with your viewers via live chat. If this is an important element you'd like them to utilize, let them know.