Finding editing points in 6-hour replay with AI editing, criteria for selecting tools

If you want to get past the stage of finding where to cut in a 6-hour replay, you need to change the criteria for choosing an AI editing tool. Tools designed to trim clips that have already been cut, such as Capcut or Brew, stop before the full video, scan the entire broadcast, and even read chat and sponsorship responses, so the search progresses automatically. The areas that are solved for free generally include subtitles and vertical conversion.

Which processes does AI editing actually reduce?

Breaking down the broadcast edit into five sections reveals what is now empty. Edit point navigation, cut trimming, subtitles, 9:16 conversion, thumbnail and upload.

The six tools compared here are Capcut, Vrew, Galaxy device built-in editing, Opus Clip, Vizard, and ClipSpray. This is not a survey that covered the entire market, but rather the results were based on the same criteria for six frequently mentioned items by streamers, and the confirmation date is August 2026. Among these six, capcut, brew, and device built-in editing are concentrated in the second to fourth columns. The machines that touch the first slot are the Opus Clip, Vizard, and ClipSpray series, which accept long originals as a whole.

The section that takes up the most time in streamer editing is not subtitles or vertical conversion, but the first section where you decide where to cut out of the 6 hours.

The automation level column is a value based on the same criteria for the six tools above, and is not an aggregate number for the entire industry. Traditional editing programs such as Premiere Pro are tools that are operated directly by humans, so they were omitted from the automation comparison and are only listed as examples.

If you turn on automatic subtitles, the third section is almost finished. However, if the first space is empty, the total time required does not decrease. The reason the day flies by is not because of the time spent editing subtitles. This is because it takes time to go back and forth across the timeline to find the edit point.

Tip: Write down on a piece of paper which of the five spaces the tool you are currently using fills. This is where the difference comes as to which AI editing tool you should pay for next.

Why do Capcut and Brew stop at the 6-hour replay?

It's not that the tools are poor, but the premise is different. Capcut's AI editing function starts by assuming that you already have material in hand, and Brew is strong at removing silent sections after uploading a file. The device's built-in function to find and use Galaxy AI editing methods also assumes short videos stored on the phone.

There is also an upper limit to the length. This is a table that compiles the input upper limits and plan-specific limits confirmed in the official document. The confirmation time is August 2026, and the blank space is not left blank because I don't know, but means I couldn't find the value in the official document.

Input upper limit comparison table for each tool

Pro and Max can analyze without length restrictions and specify sections in increments of at least 15 minutes (ClipSpray rights and restrictions). Those with an upper limit have to split up the episodes, so it's quicker to check the length of your own broadcast before paying.

The free range of AI editing varies from tool to tool and changes frequently. Of the six, only three have been confirmed by official documents. Brew is divided into four levels: Free, Light, Standard, and Business. If you choose an annual subscription, you will receive a 20% discount compared to monthly payment (Vrew tariff plan).

Opus Clip starts from Free ($0), Starter ($15/month), Pro ($29/month), and Business customized quotes (Opus Clip plans). ClipSpray Free has 10 tickets, and 1 short form includes 1 ticket. One broadcast is based on 10 basic short forms, so 10 free passes are equivalent to one broadcast, and the received pass is valid for 3 months (ClipSpray rights and restrictions).

The free section of capcut and device built-in editing has not been confirmed in official documentation. Conditions such as watermarks and resolution restrictions vary depending on the region and app version, so it is safer to directly open the official plan page for each service before paying.

Don't read the blank space as "that feature doesn't exist." It means that no evidence was found in the official document. In particular, we have not found any evidence to conclude that competing tools do not use chat and sponsorship data.

Many mobile AI editing apps also offer subtitles and filters for free, but it is common for the paid section to start the moment you upload a long original in its entirety.

Tip: Judge whether something is free or paid based on the input length limit, not the list of features. Even if you just check that they accept the entire 6-hour replay, the number of candidates will be reduced by half.

What signal does the machine use to recognize the section that broke out in the broadcast?

For a machine, finding an edit point is about reading signals. The time when chat is concentrated, the time when support is concentrated, the point where the voice and volume rise, and the point where the scene changes. Each of these four captures something different.

Chat density tells you that viewers have reacted, but at a slightly slower time, and equally so for greetings and meme bombings. The sponsorship timestamp is a much stronger signal. It means that it was good enough for viewers to spend money.

When you read chat and sponsorship data together, there is a difference between sections where the streamer just laughed out loud and sections where viewers actually reacted. At the starting point of AI editing, which only uses voice signals, there is no distinction between the two.

The table below translates the processing method described in the ClipSpray function document by platform, and the confirmation time is August 31, 2026.

Chzzk is a gaming and live streaming platform operated by Naver (Chzzk), SOOP is a rebranded platform from the old Afreeca TV (SOOP). YouTube, Twitch, and SeeMe did not even check the official platform documents. The extent to which each platform opens chat logs and sponsorship records to the outside world may vary depending on policy and account status, so if you are planning on using it for a long time, please check the platform notice.

In cases where reaction data cannot be used like Twitch, judgment is made only at points where the voice and volume rise, and where the scene changes. Although it is less accurate, it has the advantage of not being sensitive to materials.

One replay address, all the way to the edited version, the actual work order

The AI editing task sequence is organized into six steps. The points where a person must make a decision are marked at each step.

1. Check replay status: Replays that are private or whose retention period has expired cannot be opened by address alone. The retention period and chat log retention conditions vary depending on the platform and account settings, and there are exceptions, so please check the instructions for each platform first (How to upload Chzzk VOD, How to upload SOOP VOD).
2. Enter address: Enter the Chzzk, SOOP, YouTube, Twitch, and SeeMe replay addresses as is.
3. Specify scope of analysis: The accepted length varies depending on the plan. Decide whether to divide the rounds based on the values summarized in the input upper limit comparison table for each tool (ClipSpray rights and restrictions).
4. Check report: View the overall timeline, reasons for selecting each section, and three key line quotes (How to read the report).
5. Section selection: The stage where a person decides. We remove advertisements and notice sections and edit the cut boundaries.
6. export: You will receive the original quality 16:9 cut edited version (mp4), SRT subtitle file, and 9:16 vertical edited version with subtitles. You can download the edited version, original, and subtitles at once as a zip.

If you don't have time to create short forms during a long broadcast replay, ClipSpray can help. Just enter the address of Chzzk, SOOP, YouTube, Twitch, or Seeme replay, and we will read chat and sponsorship responses to find editing points, and organize cut edits, SRT subtitles, and vertical short forms into a report.

• Is the replay public and is there a chat log?
• Does the reason for selecting the report match the actual screen content?
• Is the key line quotation completely included in the cut?
• Are there any typos in nicknames or game terms in the subtitles?
• Is there room left at the beginning and end of the cut?
• Are people pushed out of the screen in vertical frames?

The editing points chosen by AI, how much should we trust and where should we fix them?

The patterns of AI editing errors are generally set. The signals are clear, but these are sections that are not fun. If you keep these five things in mind, your inspection time will be greatly reduced.

• Reading advertisements and notices: The voice tone goes up, but the clip value is low. Leave it out entirely.
• Chatting while loading game: Only the audio is active and the screen is still. Check the screen and then make your decision.
• cut pushed back: Chat comes up after the situation is over. Move your starting point forward by a few seconds.
• Section where only the notification sound is loud: When the sponsorship sound effect increases the volume. Look again at the content of the speech.
• Misrecognition of proper nouns: Nicknames, game terms, and memes are often incorrect. Create a dictionary list and perform batch substitution.

Korean subtitle accuracy has many requirements. Since the evidence is different, it is better to look at it separately by item.

• Supported languages for YouTube automatic subtitles: Available in over 60 languages, including Korean (YouTube Help Center Automatic Subtitles).
• Live stream automatic subtitles: Available in English only (YouTube Help Center Automatic Subtitles).
• When subtitles do not appear: YouTube cites reasons such as when complex audio is being processed, when the video language does not support automatic subtitles, when the video is too long, when the sound quality is poor, or when the voice cannot be recognized (YouTube Help Center Automatic Subtitles).
• Korean treatment of Opus Clip: The official document stated that it supports more than 25 languages, but wrote that some languages, including Korean, are still in beta, so emojis and highlighted keywords may be inaccurate (Opus Clip supported languages).

Broadcast replays are a subject that easily meets that condition. It's long, has background sounds, and the game sound effects and voices overlap. So, it is realistic to receive subtitles as a draft and only correct the proper nouns.

Tip: Keep a list of frequently used nicknames and game terms. SRT is ultimately a text file, so it can be organized with just one search and replace. YouTube Customer Center also recommends using SubRip (.srt) or SubViewer (.sbv) when first creating a subtitle file (YouTube supported subtitle files).

9:16 Automatic conversion is acceptable when there is only one face and it is centered on the screen. Conversely, if the game screen and the webcam are important at the same time, or if the information is moving on both sides of the screen, a person must capture the frame. Even in reaction cuts where the whole body is shown without chroma key, automatic tracking is often unstable.

16:9 cut edited version and 9:16 short form, each has a different place to be used

It is a loss to upload the results from one analysis to the same place. It is natural to use the vertical short form to attract new users, and the horizontal cut edit to retain existing viewers. From October 15, 2024, square or vertical ratio videos up to 3 minutes in length will be classified as shorts, so the length standard for vertical results must also meet this standard (YouTube Official Blog).

Comparing it with the unit cost when outsourcing makes it easier to make a decision. The outsourcing cost of short-form video production revealed by Kmong is a minimum of 20,000 won, an average of 130,000 won, and a maximum of 340,000 won (Kmong short form video production cost), video editing costs a minimum of 20,000 won, an average of 140,000 won, and a maximum of 370,000 won (Kmong video editing cost).

What is automated is navigation, first cut, and subtitle draft. All that remains is the rhythm of the cut, subtitle tone, thumbnail, and planning for the next episode. If you are a one-person streamer, you only need to open a report the day after the broadcast and select a section, and if you are a team with an editor, the editor will stop exploring and move on to tone and planning.

Before looking for and listening to an AI editing lecture, it is best to first check which of the five spaces is left empty in the tool you are currently using. Adding AI editing does not eliminate the editor’s position. The time it takes to sift through your stomach just disappears.

Frequently Asked Questions

To what extent can AI editing be done for free?

The free range generally includes automatic subtitles, basic 9:16 reframing, and watermarked short output. Brew is in the Free level, Opus Clip is in the Free plan, and ClipSpray has 10 free passes. One short form costs 1 pass, and one broadcast is basically 10 short forms, so the free pass is for one broadcast. You can say that the paid section begins from the moment you upload the entire long original.

Can I edit a 6 hour replay with Capcut or Brew?

It is difficult not because the tools are poor, but because the premise is different. Capcut starts by assuming that you already have material in hand, and Brew is strong at removing silent sections from uploaded files, so neither of them can complete the edit point search process. To handle a full 6-hour video, you need a service that scans the entire broadcast, and when choosing a tool, check the upper input length limit before the feature list.

What signal does AI use to find broken sections in broadcasts?

We read four points: the time when chat is concentrated, the time when support is concentrated, the point where the voice and volume rise, and the point when the scene changes. Chat density tells you about the response, but it's a bit late and also pops up in meme bombings, while the sponsorship timestamp is a much more solid signal because it means viewers liked it enough to spend money. Like Chizijic's Cheese and SOOP's Star Balloon and Ad Balloon, accuracy is determined by whether platform-specific sponsorship data can be used.

How accurately do AI subtitles capture Korean?

There are many conditions. YouTube automatic subtitles support more than 60 languages, including Korean, but live stream automatic subtitles are only available in English, and subtitles may not be added at all in complex audio, poor sound quality, or overly long videos. Opus Clip also stated that Korean is still in beta, so emojis and highlighted keywords may be inaccurate, so it is quicker to create a list of nicknames and game terms and replace them all in SRT.

How much cheaper is using AI editing than outsourcing?

As of Kmong's disclosure, short-form video production outsourcing costs a minimum of 20,000 won, an average of 130,000 won, and a maximum of 340,000 won, and video editing costs a minimum of 20,000 won, an average of 140,000 won, and a maximum of 370,000 won. However, the scope of automation includes navigation, first cut, and subtitle draft, so the rhythm of the cut, subtitle tone, thumbnail, and next episode planning are still the responsibility of humans. Rather than saying that the editor's position will disappear, it would be more accurate to say that the time spent scrolling through it will disappear.

Source

• Opus Clip official documentation: Upload limits
• Vizard official documentation: Basic specifications
• Vrew tariff plan
• YouTube Help Center: Automatic subtitles
• Opus Clip: Supported languages
• YouTube Help Center: Supported subtitle files
• YouTube Official Blog: Shorts Length Update
• Kmong: Short-form video production cost
• Kmong: Video editing cost