Delivery Specifications: Visual Requirements for Different Platforms

Once a video is finished, there is one step before delivery that is easy to skip: checking the technical specifications. It is not about creativity, but it directly affects how the content is actually presented. If a video looks blurry on a phone, subtitles are cropped, or the aspect ratio is wrong, all the creative effort that came before will be diminished. This article outlines several items that need to be confirmed before delivery.

1. What delivery specifications include

Technical delivery usually requires confirming the following items.

1. Resolution. The pixel dimensions of the image. It determines the upper limit of clarity.
2. Frame rate. The number of images per second. It affects the smoothness of motion. Common specifications include 25fps, 30fps, and higher frame rates such as 50fps and 60fps.
3. Aspect ratio. The width-to-height ratio of the image. A common landscape ratio is 16:9, while a common portrait ratio is 9:16.
4. Duration. Different distribution scenarios have different preferences for length.
5. Safe area. The area of the image that must not be covered by interface elements.
6. Other items. Audio loudness standards, whether subtitles are burned in, file format, and so on.

Among these, the first three are the most likely to cause problems—because they must be determined during production, rather than being something that can be fixed easily in post.

2. Resolution: when higher is needed

Resolution requirements depend on the playback scenario. Social media distribution: standard specifications are generally sufficient. Because viewing devices are small and platforms also apply secondary compression, an excessively high resolution does not add much value.

• Official websites, product pages, booth screens: higher resolution is needed. Viewers may zoom in to look at details, or watch at close range.
• Large-screen playback (trade shows, launch events): the highest specifications are needed. When the physical screen size is large, low-resolution material will look obviously stretched.

If the source material does not have enough resolution but a higher specification is required, NadouPro's 高清功能 can process reference videos for higher clarity, supporting 2x super-resolution and up to 4K quality. One thing to note: super-resolution improves presentation quality, but it does not create details that were not there in the first place—if the original material contains too little information, the processing effect will be limited.

3. Frame rate: related to motion and slow motion

The choice of frame rate is related to the type of content.

• General content: 25fps or 30fps is the basic specification and meets the standards of most platforms.
• Content with large movements: a higher frame rate can reduce motion blur and make the viewing experience smoother.
• Material that needs to be slowed down: this is the most critical use case for frame rate. If low-frame-rate material is slowed down directly, stuttering will be obvious; increasing the frame rate before slowing it down makes a fundamental difference to smoothness.

Frame interpolation is used to improve video smoothness and includes 25fps, 30fps, 50fps, and 60fps options. If a project includes slow-motion sections, it is advisable to increase the frame rate of that material during production.

4. Aspect ratio: portrait video cannot rely on cropping

Aspect ratio is the item in delivery specifications that most easily goes wrong. The reason is that production is usually done in one ratio, such as landscape, while delivery requirements may include multiple ratios, such as landscape for an official website and portrait for social platforms. If a landscape video is cropped directly into a portrait video, two problems arise:

1. Unbalanced composition. A subject centered in landscape may end up off to one side after being cropped into portrait; the original symmetry is broken.
2. Loss of information. Two elements placed side by side in landscape may be reduced to only one in the portrait crop.

So the correct approach is reconstruction, not cropping. NadouPro's 横转竖 is used to turn landscape videos into finished portrait videos, with a default ratio of 9:16, and it also supports specifying other target aspect ratios. But conversion is only the first step—after conversion, composition and pacing still need to be checked again, because the visual logic of portrait video is different from that of landscape video. If a project knows from the beginning that a portrait version is needed, the better approach is to design for portrait during production, rather than making a landscape version first and converting it afterward.

5. Safe area: an overlooked detail

The safe area refers to the part of the image that will not be covered by interface elements. On portrait platforms, the top and bottom usually contain interface elements such as titles, buttons, and progress bars. If important content such as faces, subtitles, or products is placed in these areas, it will be blocked. So during acceptance, the following should be checked:

• Whether subtitles fall within the safe area
• Whether key visual elements, especially faces, avoid the edges
• Whether any information is visible only under a specific interface on a certain platform

This item often goes wrong even when it "looks fine"—because it appears full-screen in the editor, and only becomes blocked when placed on the actual platform.

• NadouPro's 智能字幕 is used to automatically add dialogue subtitles to videos and burn them into the finished video, outputting videos with burned-in dialogue subtitles in white text with a black outline. One thing to note is that it does not expose subtitle style parameters—it provides a fixed solution that prioritizes readability. This is actually suitable for portrait distribution: white text with a black outline remains recognizable against various backgrounds.

6. Why delivery specifications should be confirmed before starting

Finally, one process suggestion: delivery specifications should be confirmed before the project starts, not just before delivery. The reason is that resolution, frame rate, and aspect ratio are all "basic settings," and changing them is costly:

• Insufficient resolution → super-resolution is needed, but the effect is limited.
• Insufficient frame rate → frame interpolation is needed, and completed slow-motion sections must be redone.
• Incorrect aspect ratio → conversion is needed, and both composition and pacing must be reworked.

If these are determined before the project starts, the whole process is "producing to specification"; if they are discovered only before delivery, it becomes "remedial work after the fact," which is not ideal in either effect or cost. So at the project kickoff stage, it is important to ask clearly: Where will this video be shown? How many versions are needed? What are the specifications for each one? 7. A pre-delivery checklist

1.  Does the resolution meet the requirements? Is super-resolution processing needed?
2. Is the frame rate correct? Is there material that needs to be slowed down, and is the frame rate sufficient?
3. Is the aspect ratio consistent? Is the aspect ratio correct for each version?
4. Has the safe area been checked? Will subtitles and key elements be blocked?
5. Is the duration appropriate? Does it match the habits of the distribution platform?
6. Are subtitles burned in? Are they needed, and are they correct?
7. Have all versions been verified? Have both the landscape and portrait versions actually been previewed?

8. Several common misconceptions

• Misconception 1: Use the highest specification for all content. The higher the specification, the higher the processing and transmission costs, and it may not necessarily improve the viewing experience.
• Misconception 2: Portrait video can be made by cropping. Cropping damages composition; reconstruction is needed.
• Misconception 3: Ignore the safe area. It may look fine in the editor, but be blocked on the actual platform.
• Misconception 4: Confirm specifications only before delivery. Changes to basic settings are very costly.
• Misconception 5: Do not consider multiple versions. The same content often needs multiple formats, and this should be planned during production.

Finally

Delivery specifications may seem like the least "creative" part of the process, but they determine whether the work that came before can be seen in full. If a video with refined composition and carefully considered color loses key parts because the aspect ratio is wrong, or if subtitles are hard to read because they fall in an obstructed area, the audience is left only with the impression that it is "unclear." So technical specifications are not an accessory to creativity; they are its carrier. Confirming them clearly is a way of respecting the creative work itself.

Contains AI-generated information that may be incorrect. Please verify independently.