01
Original HEVC/AAC preserved
RTM. does not decode and re-encode your picture and sound just to join the recording.
NOW AVAILABLE
Ready to Merge.
DJI Osmo Pocket 4 / 4P
Long recordings. One file.
No re-encode.
RTM. restores split DJI Osmo Pocket 4 / 4P long recordings into a single verified timeline while preserving the original compressed video and audio payload. No generational re-encode. No modification of your source files.
Free to download. Analyze your own footage before you buy. Merge unlocks with Full.
Regular $79 USD · One-time purchase · 2 Mac activations
Normal / D-Log supported. D-Log2 4K: 23.976 / 25 / 29.97 / 50 / 59.94p supported. Check compatibility →
The problem
Your camera recorded one continuous take.
The filesystem gave you several files.
Long recordings on DJI Osmo Pocket 4 / 4P can be split into multiple MP4 files. RTM. identifies the recording chain, shows the exact clip order, rebuilds the continuous output, and verifies the result before accepting it.
02
Source files stay read-only
Your original DJI files are never rewritten. RTM. creates a new output and leaves the camera originals alone.
03
Verify, then accept
The output must pass RTM.'s safety and verification checks. If something does not make sense, RTM. stops instead of guessing.
In the edit.
Sometimes the real value is easier
to see in the conversation.
A long recording can be edited as split files. The question is what gets easier when you restore it first.
Pocket 4 split the long take again.
Run it through RTM. first.
But doesn’t that mean re-encoding it?
Then it’s not really the original data anymore, right?
Then it’s not really the original data anymore, right?
No. RTM. doesn’t re-encode anything.
It keeps the original HEVC / AAC data and reconnects it as one continuous recording.
It keeps the original HEVC / AAC data and reconnects it as one continuous recording.
What about the audio?
Doesn’t it click or break at the split points?
Doesn’t it click or break at the split points?
RTM. reconnects the audio across the split points in real time, so it continues as one recording.
So it’s basically bringing the original recording back as one file?
Exactly. That’s RTM.
That should make it easier to line up with footage from the other cameras too.
Yes. Instead of managing several split files, you can work with the recording timeline as one continuous file.
RTM. restores the recording timeline before the edit begins.One recording. Original HEVC / AAC preserved. Source files unchanged.
What is RTM?
RTM. — Ready to Merge.
RTM. (Ready to Merge) is a macOS utility by circle around / Vessel Inc. for merging split DJI Osmo Pocket 4 / 4P long recordings into one continuous file without re-encoding. It preserves the original HEVC/AAC media payload and does not modify the source files.
Guide: how to merge DJI split recordings without re-encoding →
How it works
Choose. Inspect. Merge.
1 / SELECT
Choose the DJI folder.
RTM. scans the folder and detects continuous recording chains without modifying the source files.
2 / INSPECT
See exactly what will be merged.
The recording and its clips are shown separately, including merge order, expected duration and estimated output size.
3 / MERGE + VERIFY
Create one verified output.
RTM. merges the recording, runs audio and deep verification, and only then marks the output as accepted.
Built to be boringly safe
No quality trade
for convenience.
RTM. is designed to restore the recording timeline, not to reinterpret the footage. The goal is simple: keep the encoded media, rebuild the continuous output, and prove that the result is acceptable before calling it done.
- PlatformmacOS
- Target mediaDJI Osmo Pocket 4 / 4P split long recordings
- VideoNo generational re-encode of the original HEVC payload
- AudioOriginal AAC payload preserved while rebuilding the continuous timeline
- Source safetyOriginal files remain read-only
- Output safetyDisk-space preflight, merge checks and verification before acceptance
- CancelIncomplete output is discarded; originals are untouched
- Separate takesSeparate recordings remain separate — RTM. does not silently join unrelated takes
Compatibility / Before you buy
Normal / D-Log are ready.
D-Log2 4K is ready too.
RTM. 1.0 now adds field-certified D-Log2 4K at 23.976p, 25p, 29.97p, 50p and 59.94p alongside the existing Normal / Rec.709 and D-Log certified modes. Compatibility remains recording-mode specific.
SUPPORTED NOW
Normal / D-Log
The final field-certified corpus passed 7 recording modes, including D-Log at 4K / 1080p across tested frame rates and 4K / 29.97p Normal / Rec.709. Certification remains recording-mode specific.
SUPPORTED NOW
D-Log2 4K
Field validation passed all five target frame rates: 23.976p, 25p, 29.97p, 50p and 59.94p. RTM. is distributed as a Universal macOS app for Apple Silicon and Intel Macs.
CERTIFIED SCOPE
D-Log2: 4K only for now
This D-Log2 certification covers 4K. HD and other untested D-Log2 combinations are not included yet. RTM. keeps compatibility mode-specific instead of assuming support.
Using a different recording mode? Ask us before purchase.
LATEST UPDATE
Build 106 is live.
A field reliability update based on a real 4K 29.97 D-Log auto-split production case.
CURRENT BUILD1.0 / BUILD 106
FIRST RELEASEAugust 24, 2026
BUILD 106 · September 10, 2026
Auto-Split Detection Update
Improved recognition of real 4K 29.97 D-Log / D-Log2 recordings split at the camera’s automatic file-size boundary. The new path is narrowly scoped and keeps unrelated takes fail-closed. No changes to the lossless merge core.
WATCH RTM.
See the split-recording workflow in action.
UPDATE HISTORY
Auto-Split Detection Update
Improved recognition of real 4K 29.97 D-Log / D-Log2 recordings split at the camera’s automatic file-size boundary. The new path is narrowly scoped and keeps unrelated takes fail-closed. No changes to the lossless merge core.
Reliability Update
Improved continuity detection for 4K 29.97 D-Log2 split recordings and added a fail-closed safeguard against incomplete leading-clip chains. No changes to the lossless merge core.
D-Log2 4K Support
Added certified D-Log2 4K support at 23.976 / 25 / 29.97 / 50 / 59.94p. Validated on Apple Silicon and Intel Macs.
Distribution Hardening
Hardened the packaged runtime and added clear version identification in About and License. No changes to merge behavior or supported recording modes.
First Release
RTM. 1.0 launched for macOS with Free analysis and Full lossless Merge + Verify.
Public builds only. Internal QA build numbers may be skipped.
TRY BEFORE YOU BUY
Use your own footage first.
Download the same RTM. app for free. Confirm that RTM. recognizes your recording and reaches Ready to Merge before you purchase Full.
FREE
Analyze first.
Select your DJI folder, analyze the recording, inspect the clips and confirm Ready to Merge. Merge stays locked.
DOWNLOAD FREEFULL
Merge when you are ready.
Activate Full in the same app to unlock Merge + Verify. No second download. One-time purchase, up to 2 Macs.
REGULAR $79
BUY RTM.$79Purchase & license
Buy it once.
Use it on two Macs.
RTM. Full is a perpetual license. Activate up to two Macs, see your activation status inside the app, and deactivate a Mac when you need to move the license.
$79
USD · REGULAR PRICE
FAQ
Short answers.
Does RTM. re-encode my video?
No. RTM. is designed to preserve the original encoded HEVC/AAC media payload rather than decoding and recompressing the recording simply to make one file.
Does RTM. modify the original DJI files?
No. Source files remain read-only. RTM. creates a separate merged output.
What if verification fails?
RTM. stops. It does not accept an output that fails its verification path.
Can I cancel a merge?
Yes. RTM. safely stops the active merge, discards the incomplete output for that recording, and keeps the original camera files untouched.
Will RTM. join separate recordings together?
No. Each detected recording is treated independently. One verified output per recording.
Does Full require an internet connection every time I open RTM.?
No. After successful activation, Full authorization is stored locally for offline use. Network access is used when you explicitly activate, refresh license status, or deactivate.
RTM.
Ready to Merge.
Restore the recording timeline. No re-encode. No guessing.