How many seconds is enough for the video?
The length of a video is not a fixed number; it is determined by the channel, viewer intent, and your goals.
There is no golden number applicable to all channels. The general principle is: for scrolling channels, keep it under 60 seconds; product explainer videos should be between 60 to 120 seconds; ads in-stream should adhere to the technical framework of each platform. Finalize the length based on objectives and starting points, rather than cutting a long version and fitting it everywhere.
- awareness ads on YouTube or Meta: 6-30 seconds
- Reels, TikTok, Shorts naturally: 15-45 seconds
- Explainer videos for landing pages: 60-120 seconds.
- Brand launch film: 60-180 seconds.
- Cut one long version for all channels.
- stuffing too many messages into a short video
The question about video length is one of the most frequently asked by Sinh Vũ when consulting on production. And the answer always begins with a reverse question: where will this video be placed, is the viewer actively searching or passively scrolling? Only then can the appropriate length be determined.
The viewer's intention determines the length.
The same brand, the same message, but viewers on YouTube are actively searching, while those on Reels are passively scrolling. These two states require different lengths and different openings.
Passive scrolling channels like Reels, TikTok, and Shorts need to capture attention in the first few seconds and keep the entire message under 60 seconds. Active search channels like YouTube with long-form videos, landing pages, and resource pages allow lengths from 60 seconds to several minutes because viewers have already set their intention before hitting play.
The duration framework by channel
Below is the reference framework based on recommendations from platforms and data from Wistia, Sprout Social:
- Bumper ads on YouTube: Maximum of 6 seconds, non-skippable, used solely for pure brand awareness.
- Non-skippable ads on YouTube: Ranging from 15 to 60 seconds as per platform regulations.
- Skippable ads on YouTube: Recommended to be under 3 minutes, but 30 to 60 seconds is the most common range for awareness ads.
- YouTube Shorts: Recommended under 60 seconds.
- Meta Reels and Stories: maximum of 90 seconds, effective range is from 15 to 30 seconds.
- Explainer video on the landing page: between 60 to 120 seconds.
- Main brand film launch: from 60 to 180 seconds.
- Training content, in-depth cases: From 5 minutes or more, placed on resource pages, not in the feed.
Common mistakes when finalizing the length
Most issues do not arise from choosing the wrong numbers but from the following production habits:
- Cut a single long version and post it across all channels, regardless of the different rhythms and formats required by each channel.
- Stuffing too many messages into a short video. A 30-second video should only accomplish one task.
- To have the logo and core message appear at the end. Viewers on passive scrolling channels often do not watch beyond the 20-second mark.
- Assuming longer videos tell more stories and are therefore better, ignoring the drop in engagement signals in the first few seconds.
Produce one version, publish one version: saves initial costs but is less effective across most channels due to format, rhythm, and cut points not being optimized for each release location.
Designing a length tree from a single production run: It takes extra time to plan in the pre-production phase, but each channel has the right version that aligns with viewer intent while maintaining a consistent narrative and identity system.
The viewpoint of Sinh Vũ
Sinh Vũ does not provide a single number to clients. Instead, during the first week of the project, we work with clients to determine how long the main version will be, where it will be distributed, and then create a list of necessary cuts for other channels.
Highlighting key points early, don’t bury the core message at the end of the video.
Wistia / Think with Google ABCD
In reality, a good production run can yield a 180-second version, a 30-second version, a 15-second version, and a 6-second version, provided the footage is edited according to multiple pre-defined cuts from the start. Each cut maintains the same color scheme, rhythm of music, and narrative voice, as they all come from the same identity design.
Deciding on length is a strategic decision, not a post-production decision. Finalize early, design backward from there, and you won't have to cut it multiple times at the end.
Decision checklist
Topic: How long videos should be for each distribution channel. Sinh Vũ guide, sinhvu.com
Select each item you find appropriate, then print or save as PDF to take with you.
If you have marked most of the signs above, this is the time to discuss in more detail. Sinh Vũ can help you review and propose a direction.
References
YouTube Help: Introduction to video ad formats. Wistia: Optimal Video Length. Sprout Social: Social media video specs guide.
Frequently asked questions
How long should TikTok and Reels be for optimal performance?
Meta recommends Reels of up to 90 seconds, but the effective range is actually between 15 to 30 seconds. TikTok is not strict about the numbers, but the principles are the same: open quickly in the first few seconds, maintain pace to keep viewers engaged. Videos longer than 45 seconds on these two platforms are only suitable when the content is compelling enough to retain viewers.
Is it necessary to produce separate versions for each channel?
It is not necessary to shoot separately each time, but planning for edits should start from the pre-production stage. Sinh Vũ typically designs a main version of 60 to 180 seconds, then cuts it down to 30, 15, and 6 seconds for each distribution point. The condition is that the footage and core message must be structured with multiple cut points in mind, not edited on the fly at the end.
How long should the video on the landing page be?
An explainer video for a product or service placed on a landing page is usually most effective at around 60 to 120 seconds. Long enough to answer customer questions, short enough to avoid tiring viewers before they continue reading the rest of the page. If deeper presentation is needed, place longer videos on a resource page or case study page, not the main landing page.