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Video Format

MPG/MPEG

Moving Picture Experts Group

MPG files are the original digital video format from the early 1990s — you'll find them on old CD-ROMs, VCD discs, and early digital cameras. MPEG (Moving Picture Experts Group) isn't a single format but a family: MPEG-1 for VHS-quality video, MPEG-2 for DVD and broadcast TV, and MPEG-4 which evolved into the MP4 we use today. If you have old .mpg files, they almost certainly need to be converted for modern playback.

What is MPG/MPEG?

MPEG (Moving Picture Experts Group) is a working group within ISO/IEC that has produced multiple video and audio standards since 1988. The confusingly named MPEG standards: MPEG-1 (1993): The first practical digital video compression standard. Used for VCD (Video CD) at 352×240 or 352×288 resolution at 1.5 Mbps. MPEG-1 Audio Layer 3 is the full name of MP3. MPEG-1 video looks 'VHS quality' at best. MPEG-2 (1995): The DVD, broadcast TV, and Blu-ray standard. DVD uses MPEG-2 video at 720×480 (NTSC) or 720×576 (PAL) up to 9.8 Mbps. Digital TV broadcasts (DVB, ATSC) use MPEG-2 video. MPEG-2 files are stored in .mpg, .mpeg, or .vob containers. MPEG-4 Part 2 (1999): An improved codec used in DivX and Xvid. Better than MPEG-2 but inferior to H.264. MPEG-4 Part 10 (2003): This is H.264 — the codec inside most MP4 files. Despite the MPEG-4 numbering, H.264/AVC is a completely different codec from MPEG-4 Part 2. The .mpg extension is used for MPEG-1 and MPEG-2 video. The .mp4 extension is used for MPEG-4 content, specifically containers defined by the ISO Base Media File Format standard. Despite the similar names, MPG and MP4 are from different eras with vastly different compression efficiency.

MPG/MPEG pros and cons

Advantages

  • Universal legacy compatibility — DVD players, old hardware can read MPEG-2
  • MPEG-2 is still the broadcast TV standard in many countries
  • Well-supported in VLC, FFmpeg, and all media players
  • MPEG-2 provides excellent quality for DVD production

Limitations

  • MPEG-1 quality is poor by modern standards (VHS-quality)
  • MPEG-2 efficiency is 3-5x worse than H.264 at equal quality
  • No modern device records in MPEG/MPG format
  • Not supported in HTML5 video natively
  • Not supported on iOS or Android natively
  • Large file sizes compared to H.264 and H.265

When should you convert MPG/MPEG files?

Convert MPG to MP4 when you need to play old MPEG files on modern devices — iPhones, Android phones, and most apps don't play MPG natively. Convert MPEG-2 to H.264 MP4 for archiving old DVD recordings in a much smaller format (H.264 achieves equivalent DVD quality at 1/3 the file size). Keep MPEG-2 only if you're burning DVDs or delivering broadcast-standard video that specifically requires MPEG-2.

Convert MPG/MPEG files

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MPG/MPEG FAQ

What's the difference between MPG and MP4?
MPG (MPEG-1 or MPEG-2) uses old compression technology from the 1990s. MP4 (H.264 or H.265 in an MPEG-4 container) uses modern compression. At equivalent quality: H.264 MP4 is 3-5x smaller than MPEG-2 MPG. 10 minutes of MPEG-2 DVD video is about 1GB; 10 minutes of H.264 at equivalent quality is 200-400MB. For modern playback: MP4. For DVD production: MPEG-2.
How do I convert MPG to MP4?
FFmpeg handles MPEG-1 and MPEG-2: ffmpeg -i input.mpg -c:v libx264 -crf 18 -c:a aac output.mp4. HandBrake (free GUI) also converts MPEG-2 to H.264 MP4 with excellent quality. VLC: Media → Convert/Save → add .mpg file → profile 'Video - H.264 + MP3 (MP4)' → Start.
Why do some MPG files have terrible quality?
MPEG-1 was designed for 1.5 Mbps total — less than a third of the bandwidth for a single modern YouTube video. MPEG-1 at its best is VHS quality. If you have old MPG files from the 1990s (from VCDs or early digital cameras), expect 352×240 or 352×288 resolution at 10-30 fps. This isn't a conversion issue — it's the original quality of the source footage.

More formats

HEICWebPAVIFEPUBWebMOpusMP3WAVM4AFLACAACMP4AVIMKVMOVJPGPNGGIFSVGTIFFICOBMPEPSARWOGGWMVPPTXPagesPDFDOCXRAWHEVCH.264AIFFM4VWMA3GPDNGRTFPSDOGVTSFLVAIXLSXCSVZIPAPNGMIDIJPEG XLVOBM2TSAC3ALACDTSJP2HEIFAPECBZ3G2SRTDOCPPTXLSODTODSM3URAR7ZM4BAMRTXTMOBITARGZJSONXMLYAMLKEYMTSCR2NEFMXFTGACAFASSVTTDSFRMF4VWVASFRMVBORFRW2EAC-3TTAISODMGXZDjVuFB2AUM4RAZW3MKAEXRVCFICSAAXPRCMP2SPXXSPFM3U8