Compress Xvid Video

How to Compress an Xvid Video Online

1. Upload Your Xvid File: Drag and drop or click "Add Files" to select your .xvid / .avi video. Batch uploads are supported, and processing happens in your browser session — no installs, no watermark.
2. Pick a Compression Method: The default is Target file size (%) with Smart Scaling — set a 1-100 slider (e.g. 50% halves the file). Alternatives: Specific file size (enter exact MB/KB), Constant Bitrate (predictable for streaming), Variable Bitrate (more efficient for mixed content), Constant Quality (CRF-style — Xvid uses its own qscale 1-31, lower = better), or Constraint Quality (quality with a max bitrate cap).
3. Resize, Recode or Trim (Optional): Under Video Resolution, drop to 720p / 480p / 360p or scale by percentage to claw back another 40-60%. Swap the Video Codec to H.264, H.265 or AV1 if you don't need Xvid playback, change Audio Codec (default MP3) to AAC for smaller audio, or set Trim start time + duration to cut dead footage.
4. Compress and Download: Click Convert, then download the smaller file. No sign-up required.

Why Compress Xvid Video?

Xvid is a free, open-source MPEG-4 Part 2 Advanced Simple Profile (ASP) encoder released in 2001 as the open alternative to the proprietary DivX codec, distributed under the GNU GPL. It's almost always wrapped in an AVI container with the XVID FOURCC tag, and was the dominant codec for DVD rips and set-top "DivX-compatible" players through the late 2000s. Files can balloon for two reasons: MPEG-4 ASP is roughly half as efficient as H.264 at matched quality, and AVI overhead plus uncompressed PCM audio tracks add up fast. Trimming, lowering bitrate, or transcoding to a modern codec shrinks files dramatically.

• Email and chat attachments — Gmail caps attachments at 25 MB, Outlook.com at 20 MB, and Discord's free tier dropped to 10 MB in September 2024 (50 MB on Nitro Basic, 500 MB on Nitro). A typical 700 MB Xvid movie rip won't fit anywhere without compression.
• Old AVI 1.0 file caps — the original AVI spec maxed out at 1 GB and many legacy players or capture cards still choke past 2 GB even with OpenDML extensions. Compressing keeps Xvid clips inside those limits for vintage hardware.
• Archiving DVD-era rips — re-encoding a shelf of Xvid AVIs to lower bitrate or to H.265 / AV1 commonly cuts storage 60-80% with no visible loss at 480p / 576p source quality.
• Faster uploads to YouTube, Vimeo, Drive — YouTube accepts AVI/Xvid but re-encodes everything anyway, so a 50% pre-compress shortens upload time without affecting final quality.
• Streaming on older devices — set-top players and DVD players advertising "DivX/Xvid Home Theater" certification typically cap out at ~4 Mbps and 720×576; pulling Xvid bitrate down with Constant Bitrate keeps playback smooth.
• Camcorder and dashcam footage — long unattended recordings encoded as Xvid AVI fill SD cards quickly; trim + resolution drop reclaims gigabytes per hour.

Xvid (MPEG-4 ASP) vs Modern Codecs — Format Comparison

If you're keeping the file as Xvid for compatibility, see Compress AVI. To move to a modern codec, Xvid to MP4 or Xvid to MKV typically halves the file even before further compression.

Compression Method Quick Guide

Frequently Asked Questions

Will compressing Xvid lose quality?

Lossy compression always discards some data, but how much you notice depends on the method and how aggressive you go. Target file size at 70-80% is typically indistinguishable from the source on most footage. Below ~40%, you'll see blocking in motion and gradient banding in dark scenes — both of which MPEG-4 ASP handles less gracefully than H.264 or HEVC. If quality matters most, use Constant Quality with qscale 3-5 and let the file size land where it does.

Why is my Xvid file so much bigger than an H.264 equivalent?

Because MPEG-4 ASP (the standard Xvid implements) is roughly half as efficient as H.264 at matched quality. The same 90-minute movie that fills a 700 MB Xvid AVI typically fits in 350-400 MB as H.264, and 200-250 MB as H.265. If you don't need Xvid for a specific legacy player, the cheapest "compression" is switching codecs via Xvid to MP4.

Should I keep the AVI container or switch?

Keep AVI only if your target device explicitly requires it (old DVD players, certain in-car media units, legacy NAS firmware). AVI can't carry B-frames reliably from modern codecs, doesn't support soft subtitles, and tops out around 2 GB on many old players even with OpenDML. MKV or MP4 are better containers for anything made in the last decade.

Will compressed Xvid still play on my DivX-certified DVD player?

Usually yes, as long as you keep the codec set to Xvid (MPEG-4 ASP) and stay inside the player's bitrate and resolution caps. Most "DivX Home Theater" players certify around 4 Mbps peak, 720×576 (PAL) or 720×480 (NTSC), and MP3 audio. Constraint Quality with a 4000 kbps max bitrate is a safe target.

What's the difference between Constant Quality (qscale) and CRF?

CRF is the H.264/H.265 quality knob (0-51, lower = better). Xvid uses a different scale called qscale with a 1-31 range — lower is still better. Both target a consistent perceived quality and let file size float with content. The numbers don't map directly: Xvid qscale 4 is roughly comparable to H.264 CRF 20-22 in subjective quality, but the H.264 file will be significantly smaller.

Can I compress and trim in one pass?

Yes. Set your compression method, then under Trim enter a start time and duration. Both run together in a single encode, so you avoid the generational quality loss of re-encoding twice. For trim-only with no recompression, use Trim Xvid instead.

How small can a typical Xvid movie get?

A 700 MB / 90-minute Xvid AVI at SD 480p generally compresses to ~350 MB at 50% target with no visible loss, ~150 MB if you also drop to 360p, and ~60-90 MB if you transcode the same file to H.265. AV1 can push that under 50 MB but encoding is slower. For a 25 MB Gmail attachment, expect to drop resolution and trim.

Does this work for DivX AVI files too?

Yes — DivX and Xvid both implement MPEG-4 ASP and share the AVI container, so the same compression methods apply. You can also convert DivX to Xvid first if you specifically need the Xvid FOURCC. For pure DivX compression, see Compress DivX.

Is my video uploaded to a server?

Files are uploaded to xconvert's processing servers for transcoding (Xvid encoding is too CPU-heavy for in-browser WASM), but they're deleted automatically after a few hours and aren't shared with third parties. No account is required, no watermark is added.