MPEG to MP4 Converter

How to Convert MPEG to MP4 Online

1. Upload Your MPEG Files: Click "+ Add Files" or drag and drop .mpg / .mpeg files into the browser. Batch upload is supported, and files are processed in your browser session — no sign-up, no watermark.
2. Pick a Quality Preset (or Custom Compression): The default is "Very High (Recommended)." Choose Highest for archival masters, High/Medium for general re-encodes, or Low/Lowest when you need small files for messaging apps. For finer control, switch to Constant Bitrate, Variable Bitrate, Specific file size, Constant Quality (CRF), or Constraint Quality, then optionally change the Video codec (H.264, H.265, AV1, VP9, MPEG-4) or Audio codec (AAC, AC3, MP3, Opus).
3. Set Resolution and Trim (Optional): Under Video resolution pick Keep original, a Preset (4K, 1440p, 1080p, 720p, 480p), a Width/Height with locked aspect ratio, or a custom Width x Height. Use Trim → Time Range to cut intros, end cards, or to extract a clip with start time and duration in HH:MM:SS.ms.
4. Convert and Download: Click Convert. Re-encoding from MPEG-2 to H.264 typically takes 30 seconds to 2 minutes per minute of video depending on resolution and your machine. Each file produces a download link individually, or grab the full batch as a ZIP.

Why Convert MPEG to MP4?

.mpg and .mpeg files are containers built around the legacy MPEG-1 (ISO/IEC 11172, 1993) and MPEG-2 (ISO/IEC 13818, 1995) compression standards — the formats behind VCDs, DVD-Video, and ATSC over-the-air broadcasts. MP4 (ISO/IEC 14496-14, published 2003) is a modern container that holds far more efficient codecs like H.264/AVC and H.265/HEVC, plus AAC audio, chapters, subtitles, and streaming metadata that the old MPEG container cannot represent. Re-encoding from MPEG-2 to H.264 at the same perceived quality typically cuts file size by 50–70 percent.

• Free your DVD rips and VHS captures — Most DVD-Video discs encode at MPEG-2 peak rates up to 9.8 Mbit/s, which produces 4–8 GB per disc. Re-encoded to H.264 at CRF 20–22 the same 90-minute movie usually lands at 1–2 GB with no visible quality loss.
• Make legacy broadcast recordings shareable — ATSC TS captures, EyeTV/MythTV recordings, and old PVR exports save as .mpg. YouTube, Vimeo, Instagram, TikTok, Discord, and Slack all accept MP4 directly; many silently reject or transcode raw MPEG-2.
• Native playback on phones and the web — H.264-in-MP4 plays natively in Chrome, Firefox, Edge, and Safari, and on every iPhone and Android device shipped since 2010. Raw MPEG-2 is not in the HTML5 baseline and most mobile browsers will not decode it.
• Edit in modern NLEs without proxies — Premiere Pro, DaVinci Resolve, Final Cut Pro, and CapCut all import MP4 cleanly. MPEG-2 long-GOP often needs intermediate transcoding (DNxHD/ProRes) before scrubbing is smooth.
• Add modern audio — MPEG containers usually carry MP2 or AC3 audio. Switching to AAC inside MP4 saves another 20–30 percent on the audio track at equivalent quality, and AAC is the default audio codec for nearly every streaming and social platform.
• Future-proof your archive — H.265 in MP4 roughly halves the bitrate of H.264 at the same quality; AV1 cuts another 20–30 percent on top. Both ride inside MP4, so you can re-encode once and pick the codec that matches your storage budget.

MPEG vs MP4 — Format Comparison

Codec Quick Guide — Picking the Right MP4 Encode

Frequently Asked Questions

Is MPEG the same as MP4?

No. MPEG (with the .mpg or .mpeg extension) is almost always an MPEG-1 or MPEG-2 program/transport stream — the format used on DVDs and old broadcast captures. MP4 (.mp4) is the ISO/IEC 14496-14 container that typically holds H.264 or H.265 video. The confusion comes from MPEG-4 Part 14 being the formal name of MP4; "MPEG" alone in the file extension almost never means MPEG-4.

Will the converter just rewrap the file without re-encoding, like CloudConvert's "no re-encoding" option?

No. MPEG-2 video cannot legally be placed inside an MP4 container in the way most players expect, so rewrap is not generally safe for MPEG → MP4. xconvert re-encodes the video to H.264 (or your chosen codec) so the output plays everywhere. For audio, AC-3 and MP3 streams can usually be stream-copied; AAC re-encoding is fast either way.

How much smaller will my MP4 be than the original MPEG?

For a clean MPEG-2 DVD rip at 6–8 Mbit/s, re-encoding to H.264 at CRF 20 typically produces a 50–70 percent smaller file with no visible quality loss — a 4 GB disc image usually lands at 1.2–1.8 GB. H.265 at CRF 24 takes that down another 30–40 percent, at the cost of slower encoding and slightly older decoder compatibility.

Should I pick H.264 or H.265?

Pick H.264 when you want a file that plays everywhere, including older smart TVs, in-car infotainment, and Windows 7 / macOS 10.12-era machines. Pick H.265 when storage matters more than maximum compatibility — for example, when archiving a large DVD collection or compressing 4K source material. Hardware decode for H.265 is standard on iPhones since the 6S (2015), Apple Silicon Macs, and most Android and smart TVs sold from 2017 onward.

My .mpg file is from a TiVo / EyeTV / dashcam and the audio drifts after conversion. Why?

MPEG transport streams from PVRs and dashcams sometimes have variable frame rates, dropped packets, or pull-down flags that confuse one-pass encoders. Try setting a fixed output frame rate (29.97 fps for NTSC sources, 25 fps for PAL) and use Constant Quality (CRF) instead of bitrate-targeted modes — that lets the encoder match audio pacing to video timestamps more reliably.

Can I trim the MPEG before converting so I do not re-encode the whole movie?

Yes. Open Trim → Time Range and set the start time and duration in HH:MM:SS.ms. The trim is applied before encoding, so a 10-minute clip out of a 2-hour MPEG only takes about a tenth of the time. For frame-accurate cuts on a long file you may prefer the dedicated video trimmer.

Does the converter keep MPEG-2 chapter markers, subtitles, or 5.1 audio?

MPEG program streams do not have a chapter table inside the file the way MP4 does, so there are no chapter markers to carry over from a raw .mpg. Embedded subtitles in DVD VOBs are bitmap-based and are dropped (extract them with a tool like Subtitle Edit first). Multi-channel AC-3 5.1 audio is preserved when you select the AC3 audio codec, or transcoded to 5.1 AAC if you pick AAC.

What is the file size limit per upload?

Single files of several GB are supported in modern browsers — limits depend on your available RAM and disk because conversion happens locally in your browser session. For DVD-sized images (4–8 GB) it is faster to trim the file first or batch-convert chapter-by-chapter. After conversion you can also run the output through Compress MP4 for an additional pass at a smaller target size.

What is the reverse conversion?

To go from MP4 back to a .mpg MPEG-2 stream (for DVD authoring, older hardware players, or broadcast workflows), see MP4 to MPEG. For other modern targets, MPEG to MKV gives you a container with broader codec and subtitle support, and MPEG to WebM targets browser-native VP9/AV1 output.