ffmpeg vs Downsize

FFmpeg Workbench is a local audio and video processing tool that runs on iPhone and iPad, suitable for users who need to perform video to audio conversion, audio format conversion, video compression, clip cropping, volume adjustment, and media information viewing. If you have any questions during use, please contact us at 2524931333@qq.com The App has a built-in FFmpeg command-line workbench. You can import videos, audios or folders in the app sandbox workspace and process files using FFmpeg commands similar to those on the desktop. For instance, extract MP4 videos to MP3 audio, convert audio to WAV, compress video size, crop specified segments, or use ffprobe to view file encoding, duration, resolution, bit rate and other information.

Downsize shrinks your videos and photos to fit any size limit — email attachments, WhatsApp, Discord, upload forms — without killing the quality. Set a target like 25 MB and Downsize does the math for you: it picks the right bitrate, compresses, then checks the real file size and automatically tries again if it's still too big. You get a file under your limit. Every time. Everything runs 100% on your iPhone. Your videos and photos never leave your device — no uploads, no cloud, no account, no waiting on a server. COMPRESS TO AN EXACT SIZE • Pick a target: 10 MB, 25 MB, 50 MB, or your own custom limit • Guaranteed under your target — we measure the output and re-compress if needed • See the estimated size before you start BUILT FOR QUALITY • Modern HEVC (H.265) encoding — same quality at a smaller size • H.264 option for maximum compatibility • Choose resolution, bitrate and frame rate yourself in Expert mode • Proper HDR & Dolby Vision handling — tone-mapped to SDR so your video never comes out washed out PHOTOS TOO • Compress photos to HEIC or JPEG • Control quality and target size • Smart downscaling keeps images sharp BATCH CLEANUP • Select many videos at once and compress them in one queue • Review before and after side by side • Free up storage: keep the smaller copy and remove the original — only when you confirm YOUR ORIGINALS ARE SAFE • Downsize always creates a copy first • Nothing is deleted or overwritten unless you explicitly say so WHY DOWNSIZE • Private by design — fully offline, nothing uploaded • No subscription — pay once, keep it forever • Fast native compression using Apple's own video engine • Clean, simple interface Download Downsize and stop fighting with "file too large" errors. — Free: unlimited single-file compression, preset target sizes (10/25/50 MB). Downsize Pro (one-time purchase): batch compression, custom target sizes, expert controls (resolution / bitrate / frame rate / codec) Privacy Policy: https://yyds2327146024.github.io/doc/dsprivacy.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/