ConversioneVideo – Free Video Converter Offline is a Windows desktop app that converts and optimizes video/audio without sending anything online. It packs a clean interface, quick profiles, batch queue, and pro touches like watermark and burn-in subtitles.
Perfect for YouTube, TikTok, WhatsApp, slide decks, archiving, and maximum device compatibility.

Key features

Supported formats

• Video: MP4 (H.264) • MP4 (H.265) • WEBM (VP9) • MKV (H.264) • AVI (MPEG-4) • MOV (H.264)

• Audio: MP3, WAV

Quality & compression (simple but smart)

• Output Quality with two modes:

  • Balanced (CRF) – constant quality (recommended for H.264/H.265/VP9).

  • Target Size (Bitrate) – control final file size.

• Quality Level: Very High / High / Medium / Low → automatically maps CRF/bitrate by codec & resolution.

• Max compatibility (forces yuv420p) for picky TVs/players.

Video controls

• Resolution: Original / Preset (e.g., 1920×1080, 1080×1920, 1280×720) / Custom

• Framerate: Original or fixed (24/25/30/60 fps)

• Rotate/Flip: 90°/180°/270°, horizontal/vertical

• Trim: Start/End (HH:MM:SS)

• Watermark with position (4 corners) & opacity

• Burn-in subtitles (hard-sub into the video)

Audio controls

• Mute, Mono/Stereo, bitrate and sample rate with Original option (no re-encode if not needed)

• Master volume ±20 dB

• 3-band Equalizer (100 Hz / 1 kHz / 10 kHz, −12 to +12 dB)

Productivity

• Quick Profiles: YouTube 1080p, TikTok 1080×1920, WhatsApp 720p

• Custom presets: save & recall your favorite settings

• Batch Queue: add multiple files and run once

• Overwrite protection: automatic suffix (e.g., -converted) + unique filenames

• Required output folder for queue, set right under the queue buttons

UX niceties

• Accurate progress bar (ffprobe duration + FFmpeg time= parsing)

• Live log hidden by default (toggle “? Log” → “? Hide Log”)

• Cancel anytime

• Completion toast with Open output folder button

• Shortcuts to open the output folder from the toolbar and next to the progress bar

Privacy & performance

• 100% offline (uses local FFmpeg — no uploads)

• Auto-detects ffmpeg.exe and ffprobe.exe next to the app

• Snappy WPF interface

  

How to use (3 steps)

1. Pick your file (or add multiple files to the Batch Queue).

2. In Output Format, choose container/codec and, if needed, enable Max compatibility (yuv420p).

3. In Output Quality, choose Balanced (CRF) or Target Size (Bitrate) and a Quality Level.

   • Optional: resolution/framerate, rotate/flip, trim, watermark, subtitles, audio/EQ.

4. Click Start Conversion for a single file, or Start Queue to process everything in batch.

Tip: For TikTok, use the 1080×1920 vertical profile. For WhatsApp, the 720p profile keeps size small with solid quality.

Common use cases

• Old TVs / strict players: enable Max compatibility (yuv420p).

• Shrink file size: choose Balanced (CRF) with Quality = Medium.

• Low audio level: raise Volume by +3/+6 dB; tweak Bass/Mid/Treble.

• Branding: add a watermark top-right at ~30–50% opacity.

• Social captions: use burn-in subtitles (always visible, no caption support needed).

Requirements & installation

• Windows 7/8/10/11 (x86/x64)

• .NET Framework 4.8 or later

• Microsoft Visual C++ 2015–2022 (x86) Runtime

• FFmpeg (copy ffmpeg.exe and ffprobe.exe next to ConversioneVideo.exe)

• The recommended installer checks/installs .NET 4.8+ and VC++ runtime automatically if missing.

FAQ

Does it require internet?
No. Everything runs offline on your PC.

Which quality mode should I use?

• Balanced (CRF): best quality/size trade-off, set-and-forget.

• Target Size (Bitrate): when you must hit a specific file size/bitrate.

Can I avoid re-encoding audio?
Yes. With Original bitrate/sample rate and no EQ/volume, the app can use audio copy when the container allows it.

Why force yuv420p?
For maximum compatibility with older TVs/players. Enable it if playback fails or shows artifacts.

How do you prevent overwrites?
The app adds a suffix (e.g., -converted) when there’s overwrite risk and auto-generates unique names.