TIFF to AVI Converter

How to Convert TIFF to AVI Online

1. Upload Your TIFF Files: Drag and drop or click "+ Add Files" to select your .tif / .tiff images. Upload them in the order you want them played back — most operating systems sort by filename, so frame_0001.tif, frame_0002.tif is the safest naming convention. Batch upload of an entire image sequence is supported.
2. Pick Merge Strategy and Image Duration: Choose Merge images to combine every uploaded TIFF into a single AVI (the time-lapse / image-sequence workflow), or Video per image to emit one short AVI per file. Set Image Duration — 1/30s and 1/24s produce smooth 30 fps and 24 fps playback typical for time-lapse, 1–5 seconds per frame is right for slideshows, and 10 seconds per frame gives presentation-style pacing.
3. Set Background Color, Codec, Resolution and Quality (Optional): Pick a Background Color (default Black) to fill any letterbox bars when TIFF aspect ratios don't match the video frame. Under Advanced Options, set Video Codec — MPEG-4 (the AVI default for compatibility) or H.264 / Xvid / DivX for tighter compression, MJPEG or HuffYUV when you need lossless intra-frame quality. Pick a Video Resolution Preset (768p, 1080p, custom width × height) and a Quality Preset (Very High is the default; Constant Quality with a CRF target gives the most predictable result).
4. Convert and Download: Click Convert. 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. Output is a standards-compliant AVI you can drop straight into Premiere, Resolve, VirtualDub or Windows-native players.

Why Convert TIFF to AVI?

TIFF (Tagged Image File Format) is the still-image format of choice for microscopy, satellite imaging, scanning, and high-end print — it stores uncompressed or losslessly compressed raster data and arbitrary metadata tags. AVI (Audio Video Interleave) is Microsoft's RIFF-based video container, introduced in November 1992 with Video for Windows; it remains the most reliable interchange format for legacy Windows pipelines, scientific imaging software, and analog-era editing tools. Turning a TIFF sequence into AVI is how you move from "a folder of frames" to "a playable clip."

• Microscopy & scientific time-lapse — Confocal, fluorescence and electron microscopes commonly export each acquisition as a numbered TIFF stack. Bundling them into a single AVI lets you scrub through the time series in ImageJ/Fiji, MetaMorph or any AVI-aware tool without juggling thousands of files.
• Astrophotography & lucky imaging — Apps like AutoStakkert!, RegiStax and PIPP ingest AVI for planetary stacking. Converting captured TIFF frames into an AVI keeps each frame's pixel data intact while giving stackers the frame-index structure they expect.
• Time-lapse from DSLR / mirrorless cameras — DSLRs shooting interval bursts to TIFF (for maximum tonal range) produce hundreds of files. Encoding the sequence at 24, 25 or 30 fps with 1/24s, 1/25s or 1/30s per frame yields a finished clip ready for grading.
• Legacy NLE and Windows-only workflows — Older versions of Premiere, Sony Vegas, Avid and VirtualDub round-trip AVI more predictably than MP4 or MKV, especially with codecs like Cineform, HuffYUV, MJPEG or Lagarith for visually lossless intermediates.
• Slideshow video from scanned documents or photos — Scanned family photos and document archives are usually TIFF. Compiling them into an AVI with a 3–5 second image duration produces a shareable slideshow without losing the original high-resolution scans.
• Animation & frame-by-frame compositing — Stop-motion shoots, rotoscoping passes and CG render passes are often delivered as numbered TIFFs. AVI with MJPEG or HuffYUV preserves per-frame fidelity for further compositing.

TIFF vs AVI — Format Comparison

Codec Quick Guide (which to pick for AVI output)

Frequently Asked Questions

Why is my output AVI silent — where's the audio?

Because the source is a TIFF image sequence, there is no audio stream to encode. AVI supports audio, but only when an audio source exists. If you need narration or a music bed, build the silent AVI here first, then add audio in a video editor (Premiere, Resolve, Shotcut, OpenShot, VirtualDub).

How do I control the frame rate of the resulting video?

Frame rate is the inverse of Image Duration. Pick 1/24s for 24 fps cinema cadence, 1/25s for PAL, 1/30s for 30 fps NTSC-style time-lapse, or 1/60s for 60 fps smooth motion. Per-frame values from 0.1s to 10s let you slow each frame down for slideshows and presentations.

My TIFFs are different sizes — what happens?

Mixed-resolution input is a known FFmpeg-style failure mode that stops the encode at the first size mismatch. xConvert normalizes the canvas: every frame is fitted into the selected Video Resolution Preset and any empty space is filled with the Background Color you chose. For best results, batch-resize the TIFFs to one resolution first.

Should I pick MPEG-4, H.264 or Xvid for AVI?

For broad compatibility with legacy AVI players, MPEG-4 (the xConvert default) is the safest pick. Xvid and DivX are essentially MPEG-4 ASP variants and play on most 2000s-era hardware players. H.264 produces smaller files but not every AVI-aware tool supports H.264 inside an AVI wrapper — if you specifically need H.264, an MP4 container is the more reliable wrapper.

Can I preserve TIFF's lossless quality in the AVI?

Yes — choose HuffYUV as the video codec. HuffYUV stores each frame as Huffman-coded residuals from a predictor; output is bit-exact reproducible and roughly 40–60% smaller than uncompressed video, but still far larger than lossy codecs. MJPEG is a lighter near-lossless alternative if HuffYUV files are too large.

Will my multi-page TIFF be split into separate frames?

A multi-page TIFF (one .tif file containing multiple images, common from microscopes and scanners) is treated as a sequence — each page becomes one frame of the AVI, in document order, at the Image Duration you set. If you want each page handled as its own separate AVI, switch the Merge Strategy to "Video per image."

Is there a file size or frame count limit?

Standard AVI containers were originally capped near 2 GB because of how the RIFF header stores chunk sizes. xConvert writes OpenDML ("AVI 2.0") indexes when needed, which lift that ceiling and let modern players handle multi-gigabyte AVIs. Practically, large sequences (thousands of high-resolution TIFFs) work — they just take proportionally longer to encode.

What if I need MP4, MKV or WebM instead of AVI?

For modern playback (web, mobile, streaming), MP4 is almost always the better wrapper. See TIFF to MP4, TIFF to MOV, TIFF to MKV or TIFF to WebM — same image-sequence workflow, different output container. If your inputs are JPGs rather than TIFFs, use JPG to AVI.

How do I trim or compress the AVI I just made?

Drop it into Compress AVI to shrink the output to a target file size, or Video Cutter to trim out unwanted leading/trailing frames.