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#number is the identifier of bug report (B), requested feature (F) or patch (P)
bug reports and feature request are here :
Version 22.09, 2022-10-04
Update to MediaInfo library 22.09, see MediaInfo change log for the list of changes in the file formats support
Basic USAC/xHE-AAC conformance checker focused on IOD and sampling rate, more to come
GUI: Support custom parse speed option
Policy creation: Add Warning and Info severity levels in addition to Error
Policy creation: 'all' or 'any' keywords for occurrence field
Version 22.03, 2022-03-31
Update to MediaInfo library 22.03, see MediaInfo change log for the list of changes in the file formats support
Dedicated package for full online (no need to upload the file) policy checker in the web browser (technology preview)
Policy checker can handle time code comparison, including less than and greater than
IMSC1 implementation checker
Policy creation from a MediaInfo report includes the extra (not common to several formats) fields
Policy creation from a MediaInfo report includes several forms of some fields
Parsing speed is now the MediaInfo library default (use --ParseSpeed=0 for getting back the previous behavior)
Report result cache is cleared when a new version of the tool is installed (including development snapshots)
Does not validate Matroska attachments content against Matroska rules
More platforms supported, including Amazon Lambda (x86_64 and ARM)
Windows 7+, macOS 10.10+, RHEL/CentOS 7+, SLE 12+, Debian 9+, Ubuntu 18.04+, Fedora 34+
Version 18.03.2, 2018-04-10
x Fix incomplete initialization of checker window with old Qt versions.
Version 18.03.1, 2018-03-26
x Fix regression on Windows with directory names beginning by n or r.
Version 18.03, 2018-03-19
x I782, FFV1: Golomb Rice parsing was wrong
x I210, FFV1: remove sar_den test must be 0 if sar_num is 0
x Do not apply policies to attachments
x Print error if data directory isn't writable And polices can be applied on fields provided by new MediaInfo library:
+ AV1: support of AOmedia AV1 based on latest specifications draft, raw (OBU) and in MKV
+ DPX: endianess, packing mode, compression mode
+ MXF: detection and parsing of ProRes (SMPTE RDD 44)
+ MXF: HDR metadata support
+ AVC: add consumer camera recording date/time
+ AVC: add consumer camera model name and iris F number
+ JPEG: ICC parsing, display of ICC color space
+ MediaInfo JSON output
x colour description: trying (again!) to have more coherent labeling
x AAC: SBR parsing issue with 3+ channel streams, with sometimes false-positive PS detection
x DPX: some elements in trace were wrongly displayed (wrong endianess)
+ License change
Version 17.12, 2017-12-21
Endianness and Sign report for PCM Matroska tracks
Support of external time code tracks (.qtc) in MOV
Support of file names >64 chars long or non ASCII for referenced files in MOV
JPEG 2000: Support of IMF profiles
Fixed wrong color range info Matroska
I630, "Input is not proper UTF-8" message with some MOV files
Version 17.11, 2017-11-22
Formatted MediaInfo display
Text and EBUCore 1.8 (XML and JSON) reports available for download in MediaInfo display
Improved Matroska video frame rate detection
Support of BWF (bext) loudness info
Support of MOV HDR metadata
Support of PCM endianess in Matroska files
Several minor fixes
Version 17.08, 2017-09-11
FFV1: fix false positive about FFV1 slice_x error when slice_w>slice_h
Clarifcation about license of some third party library
Version 17.07, 2017-08-08
MediaConch is now directly integrated in Fedora repository
Version 17.06, 2017-06-30
"Full parsing" option
Internal database viewer
Policy column in checker was sometimes displaying "fail" even if test was passing
Ubuntu 17.04 packages
More Matroska checks
More detailed FFV1 errors
See for more information
Version 17.05, 2017-06-01
Add MediaConch to Mac App Store
Use OS native dialogs instead of those from Qt
Display login status in settings page and allow to logout
Fixed broken XML output display
deprecate MKV-VALID-BOOLEANS test
fixes to MKV-NUMERICAL-TAG test
Version 17.04, 2017-05-04
Better support of some broken Matroska files (high EBMLMaxSizeLength, padding before start of EBML)
Was sometimes displaying "Bit depth: Bit0" when bit depth is unknown in Matroska
FFV1 PixelAspectRatio was an integer, switched to 3-digit rational
Several small bug fixes and small performance optimizations
Version 17.03, 2017-03-31
Analyze attachments in Matroska files
Reduce size of Matroska trace
Few small FFV1 parsing improvements
Checker: js refactoring, improve display of results, performance improvements
Several small bug fixes
Version 17.02, 2017-02-28
New policy example (TN2162)
Fix incorrect namespaces in schemaLocation (Thanks to kimec)
Report refactoring
Flipping between pages removed
Several minor FFV1 related bug fixed
Support of V_FFV1 codec identifier
Fix Qt 5.7+ webengine support in Matroska
Version 17.01.1, 2017-02-02
Fix a performance regression in the matroska parser
Version 17.01, 2017-01-31
Less verbose output by default (use " -ft" for old behavior)
New display templates "Simple" and "CSV"
Support of newest version of DPFManager (TIFF plugin) and VeraPDF (PDF plugin)
Store implementation report in database (no need to run it again at relaunch)
Policy editor: option for creating policy from a file
Policy editor: split between Profile and Level
Checker page: jump to the page containing the file to analyze
Checker page: scroll to the top of the results when page is changed
Checker page: add reload analyze button (force analyze)
Checker page: reduce font size of jstree MediaInfo and MediaTrace
Several small bug fixes
Version 16.12, 2016-12-31
Push policies to MCO (public or private)
Import policies from MCO
UI improvements
Better handling of errors
Fix adding 100+ files for analyze
Version 16.11, 2016-11-30
Publish a policy to MediaConchOnline public policies
MediaTrace optimization for Matroska
Fixed parsing of FFV1 v0/v1
Minor UI fixes
Improve support of plugins
Version 16.10, 2016-10-31
Update implementation tests, policies and displays
Public policies page
Handle latest versions of VeraPDF and DPF Manager
FFmpeg plugin
Watch folder plugin
Fixer (see )
Several minor fixes
Version 16.09, 2016-09-30
New policy format to allow complex policies
Update example policies and displays
New policy editor to build complex policies
Policy rules can use MediaTrace
Handling of FFV1 16-bit bitdepth (YUV and RGB)
Support of Matroska FieldOrder, MatrixCoefficients, BitsPerChannel, Range, TransferCharacteristics, Primaries new elements
Stream count policy test (in General section)
Version 16.08, 2016-08-31
Policy Editor: close message when user change of policy/rule
Checker: remove a node is not saved
Checker: fix handling of files with special chars
Add ctrl-q shortcut to quit
Better handling of user path
Version 16.07, 2016-07-29
New policy editor
Minor fixes
Version 16.06, 2016-06-30
Create a policy from MediaInfo report
Revisited HTML report, more compact and with a summary per test
Revisited Display window
Minor UI fixes on the main window
Matroska files with CodecPrivate element before CodecID element where not always correctly parsed
Performance improvements
Version 16.05, 2016-05-31
MediaConch XML format v0.2
Improved Matroska tests
Improved HTML display
FFV1 parsing speed improvement
Updated settings display
Remember last policy and display directories
List of values for several elements in the policy editor
Option for applying a policy to all open files
Code refactoring of the user interface
Minor UI fixes
Version 16.04, 2016-04-29
Merge of "Checker" and "Results" pages in one page as in MediaConchOnline
Checker page new design, based on MediaConchOnline one
Add some settings (default policy, default display, default path for file open)
Remember the last policy used, the last display used, the last path used
FFV1: display of the trace of the slice header
Check a directory recursively
Fix: display correctly information even if the file disappeared (renamed / not accessible)
Minor UI fixes
Version 16.03, 2016-03-31
Verbosity selection
Improved free text editor
Support of plugins (VeraPDF and DPF Manager)
Version 16.02, 2016-02-29
New page for the results (analyze and update in background, delete/add jobs during the processing of the queue)
GUI usage is saved and restored when it is restarted
Dynamic selection of the policy and the display format in the policy viewer
Dynamic selection of the display format in the implementation viewer
CAVPP access and preservation policy sets
Update of implementation checker tests, including some FFV1 checks
Expanded REST API of the server
Version 16.01, 2016-01-27
More Matroska validation tests
Improved reports
Verbosity option
MediaConch server, with a REST API
MediaConch CLI and GUI can communicate with MediaConch server
Support of Qt 5.6 (QtWebKit dependancy is replaced by Qt QtWebEngine dependancy)
Matroska: CRC-32 validation
Matroska: support of padding/junk at the start of a segment
Matroska: trace is activated for all elements (but report is still based on the first element met)
Matroska: add an intermediate level in the trace for the raw stream parser
Visual Studio 2015 project files
Version 15.12, 2015-12-31
New icon
Database support (speed improvement: file is parsed once, then policies are applied to the pre-analyzed content)
More explicit licences (MediaConch and MediaInfo library are GPLv3+ and MPLv2+, list of third party libraries and their licences)
Matroska: negative timecodes were not correctly handled
Better support of non-English filenames
Display format is applied also on invalid files
Implementation tests now load logic from an XML representation of the Matroska EBML Schema
Implementation tests on valid parent elements, element multiplicity, mandated child elements
MediaTrace now documents the parser used for raw streams within Matroska.
Sync tests with latest Matroska/EBML draft specifications.
Version 15.11, 2015-11-30
Detection of truncated Matroska files
Support of MKVMerge statistics tags (duration frame count, stream size, bit rate) per track
Count of subtitle elements
Frame rate detection algorithm revisited
Showing precision of 1/1.001 frame rates (e.g. "23.976 (24000/1001) fps" and "23.976 (23976/1000) fps")
Version 15.10, 2015-11-02
Implementation checker with some EBML tests
New set of default Policy reports
About box and Help documentation added
More coherent list of options
MediaTrace UI changed, with a grid (offset on the left, value on the right)
MediaInfo report UI
MediaInfo XML export
Policy XSL editor updated
Display XSL import / export
Text/HTML/XSL display examples
Several bug fixes
Version 15.09, 2015-10-02
Design of the report is changed (similar to MediaConchOnline)
Examples of policies provided by default
Support of XSLT policies
Drag and drop of several files
MediaTrace UI
Save of MediaTrace output in XML format
Version 15.08, 2015-08-31
Improved FFV1 slice analysis
Trace feature: XML malformed with Flags items (hotfix, flags meaning disabled in XML output)
Trace feature: XML malformed with some MP4 files
Trace feature: XML duplicated attributes
Trace feature: versioned xsd, creating library name and version
Version 15.07, 2015-08-06
Improved FFV1 slice analysis (currently activated only for 1st frame)
Improved Schematron file editor
Version 15.06, 2015-06-30
Basic Schematron validator
Basic Schematron file editor
Version 15.05, 2015-05-31
Basic hard-coded policy checker (must be Matroska with FFV1 protected by CRC)
Info tool (Text or XML)
Trace tool (Text or XML)