Rendering Ad Variations
Build and track video batches from Modular Builder.

How Rendering Works
When you build a video batch, Sovran:
- Calculates the possible clip combinations.
- Applies All or Smart combination mode.
- Applies your saved combination shortlist.
- Shows the video combinations for review.
- Queues one render job for each included video and format.
- Saves completed videos under Finished Videos.
Review and Select Combinations
All combinations are selected when you first open the review page.
Use a row checkbox to remove or include one combination. Use Select all or Clear all to change the full list.
Select Preview to make a free preview. You can preview a combination when it is not included. You can also include or remove it in the preview dialog.
Your shortlist saves automatically for the project workspace. All and Smart modes use separate shortlists. After clip changes, Sovran keeps choices for combinations that still exist. If none of an included-only shortlist remains, all combinations are selected again. Review the selection before you build.
The video count and credit cost update at once. A selected combination includes all planned music, voiceover, and format outputs. You must select at least one combination before you build the full batch.
Choose formats
Open Review settings and select one or more formats: 9:16, 4:5, 1:1, or 16:9. Sovran saves the selection for this project. Each variation exports once per format. Each finished output uses one render credit.
The first selected format in this order is the preview format: 9:16, 4:5, 1:1, 16:9. Free samples render that format only. Use Preview format in the combination preview to inspect another selected format. The build still exports every selected format.
Sound and framing
Modular Builder matches loudness between stitched clips. When background music plays with speech, the final render lowers the music during speech and raises it in longer pauses. Your selected music volume remains the upper level. Browser previews do not apply this music reduction. Check a rendered video to hear the result.
The crop can use saved subject data from video preparation. Some large changes in shape show the whole clip over a blurred copy. Older footage without subject data cannot use that data to position the crop. Browser previews keep the default crop. Check a rendered video to review automatic framing.
Edit one variation
Select Open in video editor for a combination to trim clips and correct caption text before rendering. Source order stays fixed. Batch settings control the final caption style.
Apply pending changes, then select Save and return to batch. The changes apply to this variation.
Resolve Missing Captions
When selected clips have no captions, review the list before you build.
- Select Prepare captions when saved speech timing is available.
- Select Keep all videos to use captions where available. The button shows the current video count.
- Select Exclude combinations to remove affected combinations when other videos remain. The clips stay in Assets.
If every selected video uses these clips, you cannot exclude all of them and build an empty batch.
Check Render Credits
Review the credit cost before you submit the batch. If more credits are needed, a workspace owner can buy extra render credits in Account. Return to Modular Builder after payment and check the balance before building.
Tracking Progress
The project shows the current status of each render:
- Queued
- Rendering
- Complete
- Failed
You can close the browser tab. Rendering continues in the background.
File Naming
Open Review settings and check Export filename. The preview shows the first selected combination with its first music and voiceover choices. It uses the selected source filenames.
Select Edit naming rule to change the project rule. The preview updates as you type. Save the rule to use it for the build. Cancel restores the saved rule.
If the rule uses custom fields, enter a value for each field. These values apply to the current batch. Missing values block the build.
Each name ends with the build ID and the variation, such as h1-b2-m1-vo1: hook 1, body 2, music 1, voiceover 1. The numbers are each clip's place in its block in Modular Builder. Source file extensions such as .MOV are left out. The aspect ratio is added to the end only when the rule does not already include it. The Build version field uses the build start time in UTC. A retry keeps the original name.
Names keep valid spaces, case, and international characters. Long names are shortened to keep the build ID, the variation, and one .mp4 extension.
After Rendering
Once all variations are rendered, you can:
- Preview and download a video.
- Select Duplicate & edit to create a separate editor draft when the export supports it.
- Publish to TikTok.
Editable copies need available source details, media, and fonts. Some older exports or settings cannot be copied. The video details panel shows the cause. A copy does not start a render. See Copy a finished video.
Find a finished batch
Open Finished Videos and choose By batch in the sort control. Each group shows the batch and its video count. Clip labels identify the parts used in each variation.
Use Select batch to select all videos in that batch that match the current filters, including videos below the visible list. Check the selected count before downloading or exporting. Videos without batch details appear in a separate group.
Download finished videos
Select finished videos, then open Download videos. Choose ZIP archive to prepare one package. A package can recover when packaging stops unexpectedly.
Choose Individual files to save into a folder. Select a folder inside Downloads. The browser can block access to the Downloads folder itself. Check progress for each saved or failed file. Individual downloads need browser support for folder access.
Downloads and cloud exports do not use additional render credits. Render credits apply when the videos are created.