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Convert 2–12 videos · Sequential memory-safe queue · Partial success report

Batch Video Converter

Convert 2–12 videos sequentially with shared presets, aggregate planning, continue/stop recovery, a custom ZIP, and a detailed report.

This workflow reads the selected media from browser memory and creates the download locally. AntiUpload, analytics, and ads receive neither the file nor its working buffers.

No file uploadOn-device processingAds cannot access filesNo account
  1. 1Pick files
  2. 2Configure
  3. 3Download
Choose 2–12 videos. They run one at a time to avoid holding several encoders in memory. Successful files are kept even when another item fails.
  • File contents and names never leave your browser
  • No upload server, cloud-processing copy or remote conversion queue
  • Free to use; capacity is limited only by your device and browser

About Batch Video Converter

Batch Video Converter keeps the complete file workflow inside this browser tab. Your selected file, its name, contents, settings, and generated output are not sent to AntiUpload or a cloud conversion service. Ads and aggregate traffic analytics stay outside the processing boundary and receive no file object or working buffer.

AntiUpload's Batch Video Converter applies the same format, resolution, rotation, bitrate, and frame-rate settings to several videos in one run. Files are processed sequentially rather than launching several encoders at once, which keeps browser memory bounded and makes large batches less likely to crash a tab.

Choose whether a failed item should be logged while the queue continues or should stop the remaining files. Successful conversions are kept whenever at least one item completes, and name collisions inside the archive are numbered safely instead of overwriting an earlier result.

Before starting, the batch plan reports file count, combined duration and size, failure behavior, ZIP name, and report contents. The generated conversion-report.txt records the exact shared settings, completed/failed/skipped counts, per-file errors, and aggregate byte totals.

The batch is capped at 12 files per run as a browser guardrail. The ZIP filename is customizable and sanitized locally. Already-compressed videos are stored without a second ZIP compression pass, avoiding wasted CPU and preserving exact converted bytes.

How it works

  1. Choose 2–12 videosMix MP4, MOV, WebM, MKV, AVI, M4V, and FLV inputs. Reorder the list before starting if sequence matters to you.
  2. Set one output presetStart with Universal Copy, Social Upload, Small Share, or Open Web Video, then adjust the container, resolution, rotation, bitrate, and frame rate once for the whole batch. A duration-aware aggregate size estimate appears for fixed bitrates.
  3. Review packaging and failure behaviorConfirm the sequential file count, total size and duration, choose continue or stop after an error, and set a safe ZIP filename before processing.
  4. Convert sequentially and download one ZIPEach file releases encoder resources before the next begins. Completed videos and a detailed settings/status/byte report are stored without recompressing the video bytes.

When to use Batch Video Converter

Standardize a folder of phone and camera clips
Convert mixed MOV, WebM, and MKV recordings to a consistent MP4 preset before editing or sharing.
Create lightweight review copies
Downscale several source clips to 720p or 480p in one queue for email, support tickets, or client review.
Rotate a batch of incorrectly oriented recordings
Apply one rotation or flip setting across every selected video without repeating the same form.

Frequently asked questions

Are files uploaded during batch conversion?
No. Every input, converted output, and the final ZIP stays in your browser. The queue uses your device CPU or hardware video encoder. Input files are read from browser memory and the output is created locally for your download. AntiUpload does not send file bytes, names, sizes, page counts, contents, passwords, or generated outputs through analytics or advertising requests.
Why does the batch run one video at a time?
Video encoders and decoded frames use substantial memory. Sequential processing keeps peak memory close to one conversion instead of multiplying it by the number of files, which is safer on phones and ordinary laptops.
What happens if one video fails?
The default Continue policy records the failure and moves to the next file. Stop ends the remaining queue after the first failure and marks untouched items as skipped. If at least one file succeeded, the ZIP still contains it and a detailed report.
What is included in conversion-report.txt?
It records the shared conversion settings, completed/failed/skipped counts, total input and output bytes, each input-to-output filename, and the error or skip reason for unsuccessful items.
Can I choose the ZIP filename?
Yes. Enter a filename in Batch packaging. Unsupported path and filename characters are replaced, duplicate .zip extensions are avoided, and an empty value falls back to converted-videos.zip.
Are the converted videos compressed again by the ZIP?
No. Video containers are already compressed, so the ZIP stores them directly. This is faster and avoids allocating CPU to a compression pass that would barely reduce size.

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