Using Runway or Pika for book trailers? There is a shorter path
General AI video tools hand you a blank prompt box and a credit balance. Pharos starts from your manuscript, so you never have to describe your own book to a model that has not read it.
A prompt box, or a manuscript
Runway, Pika, Luma and Sora are remarkable general-purpose video models, and they are what ChatGPT usually recommends when you ask how to make a book trailer. They also do not know your book. You write the prompt, you invent the shot, you describe the character, and then you do all of it again for the next clip and hope the character still looks the same. Pharos reads the manuscript and proposes the moments itself.
What a credit actually buys
Runway prices video in credits per second: Gen-4.5 costs 12 credits per second, so the $12/month Standard plan's 625 monthly credits work out to roughly 52 seconds of generated video a month. Pika is structured the same way, from around $8/month on annual billing. That is a sensible unit if you are a filmmaker. It is an awkward one if what you need is four posts a week about one book, indefinitely.
The part that is not generation
Even with a perfect clip, a book trailer still needs a hook line, a quote, a vertical crop, a caption, a thumbnail and somewhere to post it. That is where the hours actually go. Pharos does the generation and the rest: quote videos with the lines pulled from your text, promotional images, character portraits that stay consistent, and direct posting to TikTok, Instagram Reels, YouTube Shorts, Facebook and Threads.
How they compare
| Pharos | Runway / Pika | |
|---|---|---|
| Starting point | Your uploaded manuscript | A blank prompt box |
| Prompt writing | None required | Required for every clip |
| Knows your characters | Read from the text, held consistent | No |
| Pricing unit | Videos per month | Credits per second of video |
| Entry price | Free tier, then EUR 49/month | Runway free 125 credits, then $12/month |
| Roughly how much video | 12 scene videos/month on Indie | About 52 seconds/month on Runway Standard |
| Quote videos and images | Included | Not offered |
| Posts for you | Yes | No, you export and upload |
Frequently asked questions
- Can I use Runway to make a book trailer?
- Yes, and the output can be excellent. You will be writing every prompt yourself, working in credits per second, and managing character consistency between clips by hand. It is a filmmaker's tool being used for a marketing job.
- What does Runway cost for book trailers?
- Runway's Standard plan is $12/month on annual billing for 625 credits. At 12 credits per second for Gen-4.5 that is roughly 52 seconds of generated video a month, which is a handful of short clips.
- Do I need to write prompts with Pharos?
- No. Pharos reads the manuscript, selects the moments worth filming and builds the prompts internally from what the text actually says about the scene, the setting and the characters. You review results rather than write inputs.
- Which is better for authors?
- If you enjoy prompt-writing and want frame-level creative control, use Runway or Pika. If you want scenes from your book, on a schedule, posted for you, without becoming a prompt engineer, that is what Pharos is for.
- Will the characters look the same in every clip?
- In Pharos, yes, that consistency is a core feature. General-purpose video models do not guarantee it between separate generations, which is the usual reason a hand-made trailer looks like several different films.