Correction, 2026-10-02: the trailer was costed with Merge Videos (the Montage node) as the assembly step. Its merged file has no sound, so the music, effects and narration would be dropped, and it joins at most 10 clips, fewer than the trailer's fifteen shots. Assembly now goes on the timeline in 8frame's Video Editor mode: the trailer drops from 413 to 403 credits and the launch from about 964 to about 954.
Correction, 2026-09-30: we priced narration pro rata. ElevenLabs TTS bills 13 credits per started 1,000 characters, so a single line bills the 13-credit minimum, not about 5. Fixed below.
An author's marketing problem is that the product is text and the channels are visual. Generation helps with that mismatch genuinely: cover testing, atmospheric trailers, quote cards and social graphics all cost cents rather than commissions.
The line is anything that fabricates endorsement or reception.
TL;DR
- Never generate a review, a blurb, or a bestseller claim. Fabricated endorsement is a regulatory matter
- Cover testing is the highest-return use. Twenty candidates at 6 credits, judged at 100 pixels
- Book trailers work because they are atmospheric, not narrative
- Film yourself for anything about you or the book's ideas
- A full launch campaign: roughly 700 credits, about $7
Cover testing, which matters most
A cover is judged at about 100 pixels tall, in a grid, next to its competitors. Generation makes it cheap to find one that survives that.
- Collect twenty covers from the top of your exact subcategory. Not books you like, books ranking where you want to rank.
- Generate art only. No title, no author name in the prompt. Leave a third of the frame visually quiet for type. Seedream 5 at 6 credits.
- Twenty candidates: 120 credits, about $1.20.
- Set the type in your editor with a real font. Generated text garbles, and a misspelled title is a dead listing.
- Test at 100 pixels in a mock grid with the competitor covers.
- Upscale the winner for print, Topaz Image Upscale at 11 credits per 24-megapixel block, to your printer's spec.
More detail in best AI image generator for book covers.
Book trailers
The thing to know: book trailers work when they are atmospheric and fail when they try to tell the story. You have sixty seconds and a novel; summarising is hopeless. Conveying a feeling is achievable.
Which suits generated video well, because atmosphere is what it does best: weather, light, texture, landscape, objects, mood. No characters, no faces, no dialogue, no plot.
Canon 8frame prices, a credit is $0.01 at pack rate:
| Element | Route | Credits |
|---|---|---|
| Atmospheric shot, 5s at 480p | Wan 3.0 | 24 |
| Shot at 1080p | Wan 3.0 base, 5s | 95 |
| Shot with generated audio, 8s | Veo 3.1 Lite | 54 |
| Long establishing plate, 30s at 480p | Wan 3.0 base | 142 |
| Music bed, 30s | Lyria 2 | 13 |
| Sound effects | ElevenLabs SFX, 1 to 6 by length | 1 to 6 |
| Narration of one line | ElevenLabs TTS, 13 per started 1,000 characters | 13 |
A 60-second trailer: fifteen shots at 480p (360), music (13) and six effects (30) is 403 credits, about $4.03.
Assemble on a timeline: 8frame's separate Video Editor mode has video, text, caption and sound layers, or use your own editor. Not Merge Videos: it joins at most 10 clips and its merged file has no sound, so the music, effects and narration would be lost.
Build the sound first, then cut pictures to the hits. A trailer is a sound design piece and the visuals are timed to it.
The line
Never generate a review or a blurb. Not a quote from a publication, not an endorsement from an author, not a star rating. Fabricated endorsement is a regulatory matter in most markets and, in publishing specifically, a reputational one that ends careers.
Never imply bestseller status you do not have.
Never generate a photograph of a real author, including yourself in a way that misrepresents you.
Quote cards from your own book are fine, because the words are yours.
What to film
You, talking about one idea from the book. Ninety seconds, phone camera, a window. This is the content that sells books by an author nobody has heard of, because the reader is deciding whether they want to spend nine hours with your mind.
A reading. One page, read well.
Do not use a synthetic presenter. The voice is the product.
What a launch costs
| Item | Route | Credits |
|---|---|---|
| 20 cover candidates | Seedream 5 at 6 | 120 |
| Cover upscale for print | Topaz Image Upscale | 11+ |
| 60-second trailer | as above | 403 |
| 20 quote cards with exact text | Nano Banana Pro at 21 | 420 |
| Total | ~954 credits, about $9.54 |
Or use Seedream 5 at 6 credits for quote cards and set the type in your editor, which drops the total to about $6.54 and gives you exact typography.
FAQ
Can I generate a book trailer? Atmospheric ones, yes. Narrative ones do not work regardless of tooling.
Can I generate review quotes? No. Fabricated endorsement is a regulatory and reputational problem.
How much does cover testing cost? 120 credits for twenty candidates, about $1.20.
Should I be on camera? Yes. Readers are deciding whether they want your mind for nine hours.
Sources
- ElevenLabs TTS price and block rounding: the 8frame app, checked 2026-09-30
- Merge Videos (Montage): 2 to 10 clips, 10 credits a run, and no audio track in the merged file: the 8frame app, checked 2026-10-02; Video Editor mode layers: the 8frame app, checked 2026-10-02
Test twenty covers, build the sound, film yourself. The 8frame canvas is free and unlimited; generation is paid from $19/month.