MPEG Compressor

How to Compress MPEG Files Online

1. Upload Your MPEG Files: Drag and drop or click "+ Add Files" to select .mpg or .mpeg videos from your device. Batch upload is supported so you can shrink a folder of DVD rips or DVR captures in one pass.
2. Pick a Compression Method: Choose Target file size (%), Specific file size, Constant Bitrate, Variable Bitrate, Constant Quality, or Constraint Quality. The percentage slider (default Best) is the safest starting point — set 50% for a roughly half-size file, then dial up or down by eye.
3. Adjust Resolution and Trim (Optional): Use Auto Scale to keep proportions, drop down to 720p / 480p / 360p, or enter custom dimensions. Open Trim and set a Time Range to clip out unused leader, trailer, or DVD menu padding before compressing.
4. Compress and Download: Click Compress. Files process in your browser session — no sign-up, no watermark, no quality cap. Output stays .mpeg with the same MPEG-1 or MPEG-2 codec so legacy DVD players and broadcast equipment still recognize it.

Why MPEG Files Are So Large

MPEG here means MPEG-1 (ISO/IEC 11172, 1993) and MPEG-2 (ISO/IEC 13818, 1995) — the video codecs that powered Video CD, DVD-Video, and ATSC/DVB broadcasts. Both predate H.264 by roughly a decade and compress 3-6x less efficiently than modern codecs, so a 1-hour DVD-quality MPEG-2 file is typically 2-4 GB while the same content re-encoded to H.264 lands around 700 MB to 1.5 GB. The good news: the last U.S. MPEG-2 patent (#7,334,248) expired on February 13, 2018, so re-encoding is now royalty-free in most jurisdictions.

• DVD rips and home-movie archives — A standard 4.7 GB single-layer DVD holds about 2 hours of MPEG-2 at 5-6 Mbps. Compressing to 3-4 Mbps cuts size 40-50% with only mild visible loss, which fits a feature film comfortably under 2 GB for cloud backup.
• DVR and PVR captures — TiVo, Topfield, and many cable-box recorders save MPEG-2 transport streams. An hour of 1080i HD broadcast averages 7-8 GB; compressing 60-70% lets you keep a season on a single external drive.
• Camcorder tapes digitized to MPEG — MiniDV-to-MPEG-2 captures often weigh 13 GB/hour. Re-encoding before YouTube upload trims hours off processing time and avoids the platform's re-encode pass.
• Email and chat attachments — Gmail caps attachments at 25 MB, Outlook.com at 20 MB; an uncompressed MPEG clip blows past those in seconds. Pair the percentage slider with a 480p downscale to land under the cap.
• Legacy authoring and broadcast workflows — MPEG-2 stays required for DVD-Video and many SDI/IPTV pipelines, so converting away from .mpeg isn't an option — you need to shrink the file while keeping the container intact.

MPEG-1 vs MPEG-2 vs Modern Codecs

If your destination accepts modern codecs, convert MPEG to MP4 or MPEG to HEVC instead of just compressing — the same visual quality fits in roughly a quarter of the bytes.

Compression Method Cheatsheet

Rules of thumb for MPEG-2 SD content: 4-6 Mbps looks DVD-original, 2-3 Mbps is acceptable for casual viewing, below 1.5 Mbps shows visible blocking on motion. For MPEG-1 VCD content, anything above 1.15 Mbps is already over-spec.

Where MPEG Files Come From

• DVD-Video discs — MPEG-2 Program Stream inside .vob files; ripping tools usually output .mpg
• Video CD / Super Video CD — MPEG-1 at 1.15 Mbps (VCD) or MPEG-2 at up to 2.6 Mbps (SVCD)
• ATSC, DVB, ISDB digital TV captures — MPEG-2 Transport Stream, often saved as .mpg or .ts
• DV-camcorder digitization — Capture cards (Pinnacle, Hauppauge, ADVC) frequently muxed to MPEG-2
• Pre-2008 surveillance and DVR systems — Many still record straight to MPEG-2 for hardware compatibility
• Authoring intermediates — DVD Studio Pro, Encore, and DVDStyler all expect MPEG-2 elementary streams

If your file is actually .vob, run VOB to MPEG first to demux it, then compress. If it's a transport stream from a tuner, trim MPEG to drop pre-roll before re-encoding.

Frequently Asked Questions

Will compressing my .mpeg break DVD-player or legacy hardware compatibility?

Not if you keep the output as .mpeg with the MPEG-2 codec, which the default Compress flow does. DVD-Video also expects specific resolutions (720x480 NTSC or 720x576 PAL), GOP structures, and audio (AC-3, MP2, or PCM). For burning back to a compliant DVD, keep resolution at the original, choose a bitrate between 4-8 Mbps, and don't downscale.

Should I compress MPEG or just convert to MP4?

If a downstream tool (DVD authoring, broadcast SDI, an old set-top box) requires .mpeg, stay in MPEG and compress in-place. For YouTube, Drive backups, email, Discord, or modern playback on any phone, converting to MP4 is the better answer — same perceived quality at roughly 25-30% of the size, because H.264/H.265 compress 3-6x more efficiently than MPEG-2.

How much can I compress an MPEG-2 DVD rip without obvious artifacts?

A typical 5-6 Mbps DVD re-encode to 3-4 Mbps (around 50% size reduction) is hard to spot on a TV at normal viewing distance. Below 2 Mbps for SD content you'll see blocking on fast pans, sports, and dark scenes. MPEG-2 doesn't degrade gracefully — it produces visible 16x16 macroblocks rather than the softer blur of H.264 at low bitrates.

What's the difference between MPEG-1 and MPEG-2 files?

MPEG-1 is the Video CD codec — quarter-resolution (352x240/288), progressive, no interlaced support, capped around 1.15 Mbps at spec. MPEG-2 added interlaced video, broadcast HD support, 5.1 audio, and bitrates up to ~80 Mbps. In real files the container extension (.mpg / .mpeg) often doesn't reveal which — check with mediainfo or ffprobe. The compressor handles both transparently.

Can I keep the original MPEG-2 audio (MP2 / AC-3) instead of re-encoding it?

Audio re-encoding is what usually causes the small sync drifts people complain about after compression. If your tool exposes "stream copy" for audio, use it; otherwise pick MP2 (MPEG-1 Audio Layer II) at 192-256 kbps or AC-3 at 192 kbps for DVD-compliant output. Avoid MP3 (MPEG-1 Layer III) if the file is destined for a DVD player — many older players won't decode it.

Why is my "compressed" file larger than the original?

Three usual culprits: (1) you re-encoded at a higher bitrate than the source (common when the original was already heavily compressed at, say, 2 Mbps and you re-encoded at 5 Mbps); (2) you upscaled resolution; (3) you switched from Variable to Constant Bitrate at a high value. Check source bitrate first with mediainfo, then target 50-70% of that.

Does compressing MPEG twice make it worse?

Yes — every lossy re-encode discards information that can't be recovered. For archival, do one re-encode at your target quality and keep that as the master. If you need multiple delivery sizes, encode each from the original, not from a previously compressed copy.

Are MPEG-2 patents still active anywhere?

The final U.S. MPEG-2 patent expired February 13, 2018, and most major jurisdictions (EU, UK, Canada, Japan, Australia) followed the same general window. A handful of countries, including Malaysia and the Philippines, still had active patents past that date — check local rules if you're encoding commercially in those markets. For personal and most business use elsewhere, MPEG-2 is now royalty-free.

Can I compress MPEG files in batch with different settings per file?

Settings in the current flow apply to the whole upload batch, so group files that need the same target (e.g., all DVD rips at 50%) into one job, then run a second batch for files that need different parameters. For pure size shrinking on a folder of mixed video formats, Compress MP4 and Compress MKV follow the same controls if you're converting first.