One long video should produce a week of posts. In practice most teams get three copies of the same caption on three networks, which performs worse than posting once.
The tools below split into three jobs, and you probably need one from each: cut the source into pieces, adapt each piece per platform, and publish it on a schedule. Buying three tools that all do the first job is the most common mistake in this category.
TLDR: OpusClip or Descript to cut video, Castmagic to pull text out of audio, Canva Magic Studio for visual variants, Repurpose.io to route finished assets between platforms, and a scheduler with bulk creation (Mydrop) to write the per-platform versions and ship them.
The 7 tools by job
| Tool | Job | Best for | Still needs a human |
|---|---|---|---|
| OpusClip | Cut | Long video into vertical shorts | Picking the clips worth posting |
| Descript | Cut | Editing by transcript, clean audio | The edit decisions |
| Castmagic | Extract | Podcasts into posts and notes | Voice and accuracy pass |
| Canva Magic Studio | Adapt | Visual variants and resizing | Brand judgement |
| Repurpose.io | Route | Automatic cross-posting rules | Setting sane rules |
| ChatGPT | Adapt | Rewriting per platform, cheaply | Everything about the workflow |
| Mydrop | Adapt and publish | Per-platform versions, scheduled | Choosing the source content |
1. OpusClip: long video into shorts
Feed it a webinar or a YouTube upload and it returns vertical clips with captions and a suggested hook.
Good at: the mechanical work. Reframing, captioning, cutting to length.
Weak at: taste. Its scoring picks energetic moments, not the ones that make sense out of context, so review before you queue.
2. Descript: editing by text
Descript turns the video into a transcript you edit like a document. Delete a sentence, the video loses it.
Good at: removing filler, fixing audio, and pulling exact quotes for other formats.
Weak at: it is an editor, not an automation. You are still doing the work, just much faster.
3. Castmagic: audio into written assets
Point it at a recording and it produces show notes, summaries, quote cards and post drafts.
Good at: volume of raw material from one conversation.
Weak at: voice. The drafts read generic until someone rewrites the openings.
4. Canva Magic Studio: one design, every size
The visual half of repurposing. Magic Resize converts a design between platform dimensions instead of rebuilding it.
Good at: turning one graphic into the full set of platform sizes.
Weak at: knowing when a resize should have been a redesign. Text-heavy layouts break at vertical.
The Canva integration removes the export step between the design and the calendar.
5. Repurpose.io: rules that move content for you
Set a rule: every new YouTube short goes to TikTok and Instagram with the watermark removed. It runs without you.
Good at: genuinely hands-off distribution once the rules are right.
Weak at: the same caption lands everywhere, which is the exact failure mode good repurposing avoids. Use it for formats, not for copy.
6. ChatGPT plus a scheduler: the cheap stack
Paste the transcript, ask for a LinkedIn version, an X thread and an Instagram caption, schedule the results.
Good at: cost, and quality that is better than most people expect.
Weak at: it forgets your brand every session, and there is no workflow. Fine for one person, painful for a team.
7. Mydrop: the adapt-and-publish layer
Cutting is only half the job. The other half is turning one asset into versions that suit each network and getting them out on a schedule.
- Bulk creation takes one source and produces a batch of posts in a single sitting, which is where the hour actually goes.
- AI captions and post ideas draft the per-platform text, so the LinkedIn version is not the TikTok version.
- Per-platform preview shows how each variant renders before it ships, catching crops and broken line breaks.
- Publishing covers 9 platforms from the same content calendar, so the repurposed set stays visible as a set.
Good at: the part that decides whether repurposing saves time.
Weak at: it does not cut video. Pair it with OpusClip or Descript.
Where repurposing goes wrong
- Same caption everywhere. LinkedIn wants context, X wants compression, Instagram carries the hashtags. Identical text underperforms on at least two of the three.
- Repurposing weak content. A post that did nothing the first time does nothing in five formats. Only repurpose proven performers.
- No gap. Reposting the same idea across platforms in the same hour reads as automation. Spread it over two weeks.
- Skipping review. Every AI cut needs one human pass. Ten seconds per clip, not ten minutes.
Turn last month's best post into three weeks of content
- Pick the single best performer from the last 30 days. Not your favorite, the one with the numbers.
- Cut it in OpusClip or Descript, and keep only the clips that stand alone without setup.
- Draft platform versions in bulk, one per network, changing the opening line each time.
- Space them across three weeks on the calendar and leave the original where it is.
If one hour of work fills three weeks, the stack is right. Start free with Mydrop and build the first batch from the post that already worked.














































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