Media info for every video and audio file
File Explorer's Properties dialog gives you a length and maybe a frame size. When you need real media info, the codec a phone actually used, whether a download is truly 10-bit HDR, or why a clip stutters in an editor, you need to look inside the container. Media Info Viewer does exactly that and nothing more: it reads the file and reports what it finds, without changing a byte.
The report is split into cards. General describes the container itself: format, file size, duration, overall bitrate and the number of streams. After it come separate cards for each video track, each audio track, each subtitle track, and any attachments or chapters. A movie with three audio languages and six subtitle tracks shows every one of them, each with its Language and its Default or Forced flag.
Codec names are given the way people search for them, so you see HEVC (H.265) rather than a four-letter code, with the raw Codec ID listed underneath for anyone who wants it.
A video metadata viewer for codec, HDR and frame rate
The video card answers the questions that decide whether a file will play, edit or stream cleanly. Width, Height and Display Aspect Ratio come first, then Frame Rate with its Frame Rate Mode, Constant or Variable. A variable frame rate is a common cause of audio drifting out of sync in editing software, and here it is spelled out.
Scan Type separates Progressive footage from Interlaced, including which field comes first. Chroma Subsampling, Bit Depth and Pixel Format together tell you whether a file is 8-bit 4:2:0 delivery video or a 10-bit master. Color Primaries, Transfer Characteristics, Color Space and Color Range round it out.
HDR Format is where the HDR question gets settled. The viewer names Dolby Vision, HDR10+, HDR10 and HLG from the metadata the file carries, and adds Max FALL, Max CLL and the Mastering Display Luminance when the file includes them. Rotation is shown too, which explains why a phone clip sometimes opens sideways.
A LUFS meter built into the audio report
Each audio card gives the Sampling Rate, Channels and Channel Layout, then Sample Format, Bit Depth, Bitrate and Duration. Press Measure on a track and the app decodes the whole stream and returns three EBU R128 figures: Integrated Loudness (LUFS), Loudness Range and True Peak. That makes it a quick way to check a podcast episode or a music master against a loudness target without opening an audio editor.
Audio-only files get a spectrum and a waveform drawn in the monitor, and both fill in as the file is read. Video files show a frame instead, which plays when clicked; the Position slider scrubs through it.
Read the tags a recording carries
Files remember more than most people expect. Media Info Viewer lists the tags it finds, including Recorded Date, Recorded Location, Device Make, Device Model and Device Software from a phone, plus Writing Application, Encoded Date and the usual Title, Artist, Album and Genre on music. Before you post a clip publicly, this is where you see whether it still holds the place it was filmed.
Copy, export and check a batch
A single click copies any value. Right-click a line for Copy Name, Copy Value or Copy Both. Copy report puts the whole readable report on the clipboard. Export report saves it as a text file, and Export as JSON saves the machine-readable version, one file per report. The JSON holds the full container, stream, chapter and program data plus any loudness figures you measured.
Drop in a folder's worth of files and the list shows each one's resolution, codec and length straight away. A damaged or unfinished recording is marked Can't be read, with the reason and the error the file reported, instead of failing silently.
