MPG to MKV Converter

MPG vs MKV — Which Should Your Old Footage Live In?

If you are digitising a shelf of DVDs, VCD rips or TV-tuner captures, the question behind "MPG to MKV" is really a storage-format decision. Short answer: convert to MKV when you want a flexible archive container that a media server will index and that can grow extra tracks later; stay on MPG only if a piece of legacy hardware demands a program stream. And know before you start that this is a re-encode — the MPEG-2 picture is decoded and re-compressed to H.264, never copied across untouched.

Side-by-side Comparison

When to Pick MKV

• You are building a library that a media server will scan — MKV is the format Plex, Jellyfin and Emby ecosystems are built around.
• You may later want to mux in a commentary track, a subtitle file, or chapter marks without re-encoding the video again.
• You want the option of AV1, VP9, VP8, Theora, FLAC, Vorbis, Opus, DTS or WavPack later — this page's codec lists are the widest of any target for an MPG source.
• The file will be played by VLC, MPV, Kodi or a desktop NLE, all of which treat MKV as a native citizen.

When to Pick MP4 Instead

• Anything that will be emailed, messaged, embedded in a web page, or opened on a phone. Browsers and social platforms will not touch .mkv.
• Smart TVs, set-top boxes and older Blu-ray players, where MKV support is uneven even when the H.264 inside is perfectly standard.
• Apple workflows — iMovie and Final Cut do not import MKV. Use MPG to MP4 or MPG to MOV for those.

How to Convert MPG to MKV

1. Upload Your MPG File: Drag and drop your .mpg or .mpeg files, or click "Add Files" to browse. Both extensions are the same MPEG program stream, and you can queue a whole batch to run with one set of settings.
2. Confirm Video Codec and Audio Codec: The output is H.264 video with AAC audio. If you are archiving rather than sharing, H.265, VP9 or AV1 sit in the same Video Codec dropdown, and FLAC sits in the Audio Codec dropdown if you would rather not re-compress the soundtrack lossily.
3. Set File Compression and Video Resolution: Quality Preset opens on "Very High (Recommended)". Constant Quality exposes the CRF slider directly (16–51, starting at 23 on H.264) if you would rather set fidelity by hand; Specific file size caps the output instead. Leave Video Resolution on "Keep original" for an archive.
4. Convert and Download: Click Convert and save the .mkv. Files upload over an encrypted connection, are processed on our servers, and are deleted automatically after a few hours — no sign-up, no watermark.

Frequently Asked Questions

Does converting to MKV keep my original MPEG-2 streams untouched?

No. That claim gets made about MKV a lot because the container can hold MPEG-2 essence, but this converter has no stream-copy path — the video is decoded and re-encoded to H.264 (or whichever codec you pick) and the audio is re-encoded to AAC. One encoding generation passes, so the result can match the source closely but cannot exceed it. If byte-for-byte preservation of the original streams is the actual requirement, you want a dedicated remuxing utility such as mkvmerge, not a converter.

Is MKV better than MP4 for a converted MPG?

For archiving, yes; for sharing, no. Both containers hold the same H.264 video at the same quality, so the picture is identical — the difference is entirely in what the container can carry and what will open it. MKV wins on flexibility: unlimited audio and subtitle tracks, chapters, attachments, and no codec restrictions. MP4 wins on reach: browsers, phones, TVs, editors and messaging apps all accept it. A common pattern is to archive in MKV and export a MP4 copy when you need to send something to someone.

Will the MKV come out smaller than the original MPG?

Usually, and often by a lot. H.264 reaches comparable quality at roughly half the bitrate of the MPEG-2 that DVD-era .mpg files use, so the same picture needs far fewer bits. At the default preset the encoder targets a codec-specific, resolution-aware CRF: H.264's "Very High" tier sits at CRF 18 for a 1080p reference frame and drops two steps for a standard-definition frame, so a 720×480 DVD rip encodes at CRF 16 — a deliberately conservative, near-transparent setting. If you want the file smaller still, switch to Constant Quality and raise the number, or use Specific file size.

Can the MKV carry the multiple audio tracks and subtitles from my DVD rip?

The container can; this conversion does not produce them. There is no track picker on the page, so stream selection falls back to the default behaviour of keeping one audio stream — the one with the most channels, and on a tie the one with the lowest index. A rip with a 5.1 main mix plus a stereo commentary comes out with just the 5.1 mix. Subtitles are the same story: a typical .mpg does not carry a soft subtitle track to begin with, so none appears in the MKV. The upside of choosing MKV is that you can mux those extras in afterwards with mkvmerge without re-encoding the video a second time.

Which codecs can I put in an MKV that MP4 or MOV would refuse?

Quite a few, and it is the main technical argument for the container. On this page the MKV Video Codec list includes AV1, VP9 and VP8, none of which appear on the MOV target, and the Audio Codec list adds FLAC, Vorbis, Opus, WMA v1/v2, True Audio and WavPack alongside the usual AAC, AC3, EAC3, DTS, MP2, MP3 and PCM variants. For an archival copy of an old family tape, H.264 or H.265 video with FLAC audio is a defensible combination — you stop stacking lossy generations on the soundtrack while the video stays a sensible size.

Will my smart TV or set-top box play the resulting MKV?

Maybe, and that unpredictability is the reason to think twice. The H.264 video and AAC audio inside are decoded by essentially every device made in the last fifteen years, but the Matroska container itself is where playback breaks: some TVs parse it, others show the file greyed out, and no major browser treats .mkv as a supported <video> source. VLC, MPV, Kodi, Plex and Jellyfin handle it reliably on every platform. If the target is a specific piece of living-room hardware, convert to MP4 and skip the gamble.

Is MKV an actual standard or just a community format?

Both, now. Matroska started in December 2002 as an independent, royalty-free project built on EBML and was maintained for two decades by a non-profit rather than a standards body — which is why some professional workflows historically kept it at arm's length. That changed in October 2024, when the IETF published it as RFC 9559, giving the container a formal, citable specification. It remains free of licensing fees.

Why does the MKV still look combed, and what happens to my file afterwards?

Combing on horizontal motion comes from the source: DVD and broadcast MPG is usually interlaced, and nothing in this pipeline deinterlaces it, so the fields carry across as they are. Deinterlacing needs a desktop tool with a yadif or bwdif filter before upload. As for the file itself — it travels over an encrypted connection, is converted on our servers, and both the upload and the output are deleted automatically after a few hours. Nothing is shared or made public, there is no sign-up and no watermark. If a capture is enormous, trimming it first with Video Cutter cuts the upload down considerably.