An MKV is a box of tracks. An AVI holds one of each.
The film you downloaded may carry three audio languages, a commentary, two sets of subtitles and chapter marks. The old DVD player or car screen that wants AVI can use one soundtrack and no switchable subtitles. Choose what to keep.
Open MP4, MKV, MOV, AVI, WMV, FLV, RealMedia, DVD VOB, camcorder MTS or almost anything else, and save it as any of 32 formats. The converting happens in this tab. Your video is never uploaded.
Each file is identified from its first bytes as soon as you add it. Once the engine is loaded it is read in full, so you see the real codecs, size and length before you convert.
MPEG-4 Part 14 on the ISO base media format. The safest choice when a file has to play anywhere.
ffmpeg -i input.mp4 -map 0:v:0 -map 0:a:0? -vf "scale=trunc(iw/2)*2:trunc(ih/2)*2" -c:v libx264 -preset veryfast -crf 23 -pix_fmt yuv420p -c:a aac -b:a 128k -ac 2 -f mp4 -movflags +faststart video.mp4MKV keeps subtitles as switchable text. AVI has no proper place for them, so there are two workable options. Burning them in always works; a sidecar file works only if the player looks for one.
Most devices that need AVI were certified for DivX in the late 2000s. They expect a particular codec, a maximum size, and one MP3 or AC-3 soundtrack. These are the limits we convert to for each.
Anything made after about 2012 probably plays MP4, which keeps far more quality.
Yes, MKV to AVI conversion is completely free with no signup, no watermark, and no usage limit. Convert as many files as you need.
No. The MKV to AVI converter runs in your browser when your file is supported there, so the file stays on your device for that workflow, reducing server exposure for that workflow. Look at the processing mode before putting anything confidential through it.
Most MKV to AVI conversions finish in under a minute. A large file takes longer in proportion, though the work happens on your machine, so nothing waits on a sign-up.
Depends which formats. Lossless in, lossless out, and the file you get back is identical. Convert to something compressed and you trade a little quality for a smaller file, which is usually the trade you wanted.
Yes. The MKV to AVI converter works on phones, tablets, and desktops in any modern browser including Chrome, Safari, Firefox, and Edge.