TEMPORARY MEDIA WORKSPACE / VIDEO MERGER
Join two to five videos in the displayed order, normalize them to one landscape canvas, and download a single H.264 MP4.
The processor required by this tool is available, and this worker can accept a temporary job.
Step 1 / source
Source intake
Choose every clip for the final sequence, then use Earlier and Later to confirm playback order.
Checking publication status before file selection...
The selected bytes are sent only to the Nirmion media API for this request. Processing uses a private temporary workspace rather than permanent catalogue storage.
Server-side source and result files are removed when the response stream closes. Re-downloads use the result Blob retained only in this browser tab.
Nirmion writes a separately named result containing nirmion_tools and never overwrites the selected source file.
Know the product contract
Every media page documents the accepted source, the selected FFmpeg transformation, the output container, and the limits that can affect the job.
Add two to five valid clips under the combined 50 MB limit. Move each item until the numbered list matches the final story.
FFmpeg scales and pads each clip to a common canvas, normalizes timing and audio, then concatenates the prepared streams in list order.
Play through every join, confirm ordering, and listen for expected audio continuity in the final MP4.
Plain-language method
Normalization requires re-encoding all clips. Mixed aspect ratios can produce padding, and mixed loudness is not automatically mastered.
Add two to five valid clips under the combined 50 MB limit. Move each item until the numbered list matches the final story.
Use 720p for a lighter review copy or 1080p when source detail and output size justify it.
Play through every join, confirm ordering, and listen for expected audio continuity in the final MP4.
Useful when
Before processing
Container and codec
The result is a 16:9 H.264 MP4. Silent clips receive silent audio for compatibility, but subtitles, chapters, and multiple audio tracks are not retained.
Know the boundary
There are no transitions, crossfades, overlays, loudness matching, or timeline layers. Use a full editor when creative sequencing or detailed audio mixing is required.
Quick answers
These answers describe the actual upload, FFmpeg processing, download, and temporary-retention contract.
Yes. Use Earlier and Later before processing; the numbered list is the merge order.
The service synthesizes silence so clips with and without audio can share one compatible timeline.
No. They are proportionally fitted and padded inside the selected landscape canvas.