Convert YIFY to AVI

A legacy television, media player, or video editor may require an AVI file instead of the MKV or MP4 container used by a YIFY release. Conversion is also useful when a playback device supports only older MPEG-4 Part 2 video and MP3 audio.

What the YIFY format is

YIFY is not a file format, container, or codec. It identifies movie releases associated with the YIFY/TYER encoding group, commonly distributed as .mkv files and sometimes as .mp4 files containing H.264 video and AAC audio.

Before converting, inspect the actual file with MediaInfo or FFprobe. A filename ending in .yify may simply have a nonstandard or incorrect extension; renaming it to .mkv or .mp4 changes only the name, not the content. On systems that hide known extensions, enable extension display so the complete filename is visible.

What the AVI format is

AVI is a container based on Microsoft Audio Video Interleave. It remains supported by many older Windows programs, hardware players, televisions, and editing applications, but it handles modern features less consistently than MKV or MP4, including multiple subtitle tracks, chapters, variable-frame-rate video, and some newer audio codecs.

For older hardware, the most compatible combination is usually MPEG-4 Part 2 video, identified by codecs such as Xvid or DivX, with stereo MP3 audio in an AVI container. AVI can contain H.264, but a device that requires legacy AVI often will not decode H.264 inside it.

How to convert the file

Using FFmpeg

FFmpeg provides consistent control on Windows, macOS, and Linux. Install it from the official FFmpeg download resources or through the operating system's package manager, open a terminal in the source-file directory, and first inspect the streams if necessary:

ffprobe "Movie.2012.1080p.BluRay.x264.YIFY.mkv"

Convert the first video and audio streams to a legacy-compatible AVI:

ffmpeg -i "Movie.2012.1080p.BluRay.x264.YIFY.mkv" -map 0:v:0 -map 0:a:0 -c:v mpeg4 -vtag XVID -q:v 4 -pix_fmt yuv420p -c:a libmp3lame -ac 2 -b:a 192k -sn "Movie.avi"

-vtag XVID marks the MPEG-4 Part 2 stream with a tag recognized by many older players. With this encoder, a lower -q:v value produces better quality and a larger file; increase it for a smaller file. The explicit stream mapping selects one video and one audio stream, while -sn excludes subtitles, which AVI devices commonly handle poorly.

For a lower-resolution device, add -vf scale=1280:-2 before the output filename. If FFmpeg reports that libmp3lame is unavailable, install a build with MP3 encoding enabled or select another audio encoder supported by the target device. If the source has no audio stream, remove the second -map option and the audio options.

Using VLC

1. Open Media → Convert / Save.
2. Select Add, choose the YIFY .mkv or .mp4 file, then choose Convert / Save.
3. Select or create a profile using an AVI container, MPEG-4 video, and MP3 audio. Set a destination filename ending in .avi.
4. Choose Start and test the result on the target device.

VLC profile names and available codecs vary by version. Verify the profile's container and codecs; changing only the filename extension does not perform a conversion.

Using an online converter

CloudConvert and Zamzar commonly accept MKV or MP4 input and provide AVI output. Upload the actual source file, select AVI, choose MPEG-4 video and MP3 audio when those options are available, then inspect the downloaded file with MediaInfo.

Online conversion requires uploading the video to a third party, may impose file-size or duration limits, and can be slow for large releases. Use FFmpeg or VLC for private files, copyrighted material, or predictable codec settings.

Quality and compatibility limits

Most YIFY video is already lossy H.264. Re-encoding it as MPEG-4 Part 2 adds another generation of compression and cannot improve the source; blocking, ringing, or softness may increase. Keep the original MKV or MP4 as the archival copy.

Remuxing without re-encoding is possible only when the source video and audio codecs are accepted by the intended AVI player. A typical H.264/AAC YIFY release will therefore need transcoding for legacy compatibility.

OpenDML AVI can exceed 2 GB, but some old software and devices impose a practical limit near 2 GB. A 1080p conversion may need a lower resolution, lower bitrate, or split files. Test the output against the target device's required resolution, frame rate, codecs, audio channels, and maximum file size.