TIFF to AV1 Converter

How to Convert TIFF to AV1 Video Online

1. Upload Your TIFF Files: Drag and drop or click "+ Add Files" to load .tif / .tiff images from your device. Batch upload is supported — drop in an entire numbered sequence (image-001.tif, image-002.tif, …) and they will be processed in filename order. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.
2. Pick a Merge Strategy and Image Duration: Choose Merge images to combine every uploaded TIFF into a single AV1 video, or Video per image to render each file as its own clip. Set Duration per frame — pick 1/60s, 1/30s, or 1/24s for a true 60/30/24 fps video from a frame sequence, or hold each still longer (1–10 seconds) for slideshow output. Default is 5 seconds per frame.
3. Set Quality, Resolution, and Background (Optional): Under File Compression, Quality Preset offers Constant Quality (CRF-style — fixed visual quality, variable size) or Constraint Quality with a preset dropdown defaulting to Very High. Resize via Fixed Resolutions (1920×1080, 1280×720, etc.), Preset Resolutions (768p, 1080p), or Keep original. Pick a Background Color (default Black) for letterbox padding when TIFF aspect ratios do not match the output frame.
4. Convert and Download: Click "Convert" and grab the AV1 file individually or as a ZIP. No sign-up, no watermark, no email gating.

Why Convert TIFF to AV1?

TIFF is the lossless workhorse of photography, scientific imaging, and print pre-press — but a single 24-megapixel uncompressed TIFF runs 50–150 MB, and a multi-frame sequence (microscopy stack, time-lapse, CT scan) can easily hit gigabytes. AV1, finalised by the Alliance for Open Media in 2018, is a royalty-free video codec that delivers roughly 30% smaller files than VP9 and 30–50% smaller than H.264 at matched quality. Packing a TIFF sequence into AV1 keeps every frame's detail recognisable while collapsing the storage and bandwidth bill by one or two orders of magnitude.

• Time-lapse and astrophotography — A 1,000-frame DSLR time-lapse of 30 MB TIFFs is 30 GB on disk. Encoded to AV1 at CRF 30 it typically lands at 50–300 MB depending on motion, with no perceptible quality loss for playback on a 4K display.
• Scientific image stacks — Microscopy, MRI, and CT scanners output multi-page TIFF stacks for review. AV1 lets you share a 500-slice volume as a single scrubable clip you can email or embed in a paper, rather than a folder of individual files.
• Animated portfolios from photo sequences — Photographers and graphic designers turn high-resolution TIFF exports into smooth AV1 motion reels for Behance, portfolio sites, or social-media previews, retaining the colour fidelity of the source.
• Royalty-free distribution — Unlike HEVC/H.265, AV1 has no per-unit licensing fees from MPEG-LA or Access Advance, so commercial streaming, app embeds, and SaaS playback ship without a codec-royalty audit risk.
• Future-proof archive format — YouTube, Netflix, Twitch, Vimeo, and Meta have all rolled out AV1 delivery to capable clients; encoding now means your archive plays natively on those pipelines without a re-transcode pass.
• Lower CDN bills — A 30% bitrate reduction at the same visual quality translates directly to egress savings — meaningful when delivering high-resolution scientific or aerial imagery to a wide audience.

Need a different output container? Try TIFF to MP4 for H.264 in the most-compatible wrapper, or TIFF to WebM for VP9 if your target audience still includes pre-2018 hardware. For other source formats, see PNG to AV1 and JPG to AV1.

TIFF vs AV1 — Format Comparison

AV1 Encoding Mode Quick Guide

The xconvert default for TIFF→AV1 is the Very High quality preset, which sits roughly at CRF 23–28 equivalent — visually transparent for most photographic content at output resolutions up to 4K.

Frequently Asked Questions

Why is my TIFF folder hundreds of MB but the AV1 output is a few MB?

TIFF stores every pixel of every frame independently and losslessly. AV1 only stores the differences between successive frames (inter-frame prediction) and uses transform-domain compression on the residual, which is dramatically more efficient for sequences with any temporal coherence. A 1,000-frame time-lapse where adjacent frames are similar will compress 100–1000× tighter in AV1 than as separate TIFFs. The visual result on a screen is effectively identical at sensible quality presets.

What frame rate will my AV1 video play at?

It depends on the Duration dropdown. Picking 1/60s gives a 60 fps clip from a 60-frame-per-second sequence; 1/30s gives 30 fps; 1/24s gives cinematic 24 fps. The longer presets (1 s, 5 s, 10 s) produce slideshow-style playback where each TIFF is held on screen for that duration. For a time-lapse from a numbered TIFF burst, pick the fps that matches what your camera shot at; for a portfolio slideshow, 3–5 seconds per frame is typical.

Will every browser play my AV1 file?

Most modern ones, but not all. AV1 is supported in Chrome 70+ (Oct 2018), Firefox 67+ (May 2019), Edge 121+ (Jan 2024), and Safari 17+ on Apple silicon Macs and iPhones (Sept 2023). Older Intel Macs and pre-A17 iPhones fall back to software decode (slow) or no support at all. If you need universal playback today, encode to MP4/H.264 via TIFF to MP4; reach for AV1 when your audience is on current hardware or when bandwidth savings outweigh the long tail.

Can I keep the 16-bit colour depth of my TIFFs in AV1?

Partly. AV1's Main profile is 8/10-bit and the High profile adds 10/12-bit. xconvert encodes to 8-bit by default; the 16-bit linear values from your TIFFs are tone-mapped down. You retain visibly more headroom than JPEG-derived sources, but if you need scientific bit-exactness, encode in Lossless mode (-c:v libaom-av1 -crf 0 -b:v 0 equivalent) and keep the source TIFFs as the authoritative master.

How is AV1 different from AVIF (which also says "AV1" on the tin)?

AVIF is the still-image container for AV1-encoded data — a single keyframe in a HEIF wrapper, designed to replace JPEG. AV1 video (this tool's output) is a multi-frame stream in MP4/MKV/WebM with optional audio. If you just need a smaller still image from your TIFF, use TIFF to AVIF instead — AVIF gives JPEG-beating compression without the overhead of a video container.

What about an audio track — can I add narration or music?

Image-to-video conversions produce silent AV1 streams by default. If you need a soundtrack, render the AV1 here, then mux audio in a downstream tool that supports the Opus audio codec (AV1's natural pairing) — Opus is also royalty-free and works with the AV1 ecosystem cleanly. xconvert hides the audio codec selector entirely when the source is an image sequence.

Why is AV1 encoding noticeably slower than H.264 or VP9?

The encoder explores a much larger set of block partitions, transforms, and prediction modes per frame than older codecs — that's where the 30% bitrate savings come from. Reference encoders like libaom-av1 and SVT-AV1 typically run 5–10× slower than x264 at the slowest presets, and 1.5–3× slower at fast presets. xconvert processes server-side so your browser isn't the bottleneck — upload a few hundred frames and you'll usually have your file within a couple of minutes.

Can I trim or letterbox the output?

Use the Video Resolution controls to set a fixed output size (e.g., 1920×1080) and the Background Color dropdown (default Black) to fill the letterbox bars when your TIFF aspect ratio doesn't match. For trimming a finished video down to a specific segment, use Video Cutter after the conversion completes.