Why is my video sideways after recording on my phone?

You rotated the phone mid-recording (or started recording before rotating), and the orientation sensor locked the wrong way. Some players read the rotation flag and play it correctly while others ignore it — so the same file looks fine on your phone and sideways on your TV. The permanent fix is actually rotating the pixels, not relying on flags.

How do I rotate multiple photos at once?

Select all and apply one rotation: 90° clockwise/counterclockwise or 180° for upside-down shots, plus horizontal/vertical flip for mirrored selfies. Folder batch tools apply the same rotation to hundreds of photos with per-file preview for the odd one out.

How do I rotate a video 90 degrees without losing quality?

Re-encode at high quality (CRF 18–20): rotation rearranges pixels, so a re-encode is unavoidable, but at near-transparent settings the loss is invisible. Metadata-only rotation flags exist but players honor them inconsistently — real pixel rotation is the only universal fix.

Why do my photos look correct on my phone but sideways on my computer?

EXIF orientation flags: your phone displays using the embedded rotation tag while many desktop viewers and websites ignore it. Batch-applying the rotation bakes the correct orientation into the pixels, ending the disagreement everywhere at once.

How do I flip a mirrored selfie video?

Front cameras mirror previews (and some recordings) so text appears backwards. Apply a horizontal flip to the file — one filter, no quality debate at high bitrates. Batch it across a folder of clips the same way as rotation.

Can I rotate a whole folder of videos and photos together?

With separate photo and video rotation tools in one batch workflow, yes: point at the folder, set 90°/180°/flip per media type, and run once. Mixed folders from trips and events are exactly the use case — one orientation pass fixes everything.

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Fix Sideways Videos & Photos in Bulk (Batch Rotate & Flip)

Shot vertical, plays horizontal. Mirrored selfies. Upside-down vacation dumps. Photos and videos need different rotation tools — here's both, plus why flags can't be trusted and how to fix whole folders at once.

By Hadi Karaki, maker of FormatifSeptember 16, 202610 min read

Why sideways happens (and why flags don't fix it)

Phones record an orientation flag alongside the pixels — and players disagree about honoring it. Your phone obeys the flag (looks right), your TV ignores it (sideways), your editor splits the difference. The only universal fix is rotating the actual pixels, which is what every method below does. EXIF orientation on photos is the same story with stills.

Part 1: batch-rotate photos (90° / 180° / flip)

Photo rotation is cheap and safe: 90° clockwise or counterclockwise for portrait/landscape mixups, 180° for upside-down shots, horizontal flip for mirrored front-camera stills, vertical flip for the rare inverted scan. Apply one operation to the whole folder, then flip back the odd ones out with per-file preview — vacation dumps always contain one contrarian.

Photo rotation and flip running on a mixed-orientation folder.

Folder of JPGs → rotate 90° clockwise (ImageMagick)

for %i in (*.jpg) do magick "%i" -rotate 90 "%~ni-rot.jpg"

Part 2: batch-rotate videos (transpose, honestly)

Video rotation rearranges pixels, so a re-encode is unavoidable — set quality high (CRF 18–20) and the loss is invisible. Metadata-only rotation flags exist but players honor them inconsistently, which is how you got here; don't re-flag, actually rotate. Same batch logic as photos: one transpose for the folder, per-file check for exceptions, horizontal flip for mirrored selfie clips.

Video rotation and flip running on sideways phone clips.

Rotate 90° clockwise + keep audio (FFmpeg)

ffmpeg -i in.mp4 -vf "transpose=1" -c:v libx264 -crf 20 -c:a copy out.mp4

Quick Solution

Whole trip folder, correct orientation, one run.

Mixed photos and videos, mixed wrongness — the mixed folder from every trip ever. Formatif Pro ($8.95 one-time) runs separate photo and video rotation tools over the folder offline — 90°/180°/270° plus flips, per-file preview for the contrarians — so everything plays upright everywhere, forever.

Download free trial

Rotation questions, answered

Why is my phone video sideways?

Rotation sensor locked wrong + players disagree on flags. Fix: rotate the pixels for real, not the flag.

Rotate many photos at once?

One rotation for the folder, per-file preview for exceptions. 90°/180°/flips cover everything.

Rotate video without losing quality?

Re-encode at CRF 18–20 — visually invisible. Flags are unreliable; real transpose is universal.

Photos fine on phone, sideways on PC?

EXIF orientation ignored by desktop viewers. Bake the rotation into pixels via batch.

Fix mirrored selfie video?

Horizontal flip the file. Same batch logic as rotation, high bitrate, done.

Rotate mixed folders together?

Yes — separate photo/video rotation tools in one batch run. Trips and events are the use case.

Keep learning

iPhone to Windows workflow

Transfers, HEVC, ProRes sizes, HDR fixes.

Aspect ratios explained

What rotation changes (and doesn't) about your frame.

Vertical video mastering

9:16 specs and safe zones for rotated content.

Upright everywhere, forever.

Formatif Pro ($8.95 one-time) and Formatif AI ($12.95 one-time) handle video, image, and audio conversion offline — with batch workflows, no file size limits, and a 3-day free trial.

Download free trial Read: iPhone to Windows

FFmpeg and ImageMagick rotate free per file — batching fixes folders.

Written by

Hadi KarakiLinkedIn

Founder of Formatif, a local-first offline media processing suite for Windows and Linux. Hadi writes about video, image, and audio formats, compression, and privacy-first desktop workflows.