Elisa Nectoux <[email protected]> writes:

> What do you mean by « this is not open source »? The source code of
> Linphone and of all the software we’re developing at Belledonne
> Communications is 100% open source (we do not have an open core
> model).

Some clarification would be helpful here.  The basic issue is that the
Free Software community is uncomfortable, or rather that the situation
makes reasonable people uncomfortable.

I think people are concerned because .smff is a file extension (and thus
presumed format), and when searching about it, people in general (and me
in particular) don't seem to find anything about it on the web.  No
documentation, no libraries, no mention in wikpedia:
  https://en.wikipedia.org/wiki/List_of_file_formats

Reading git history at
  https://gitlab.linphone.org/BC/public/linphone-desktop
I get the impression that the files are really Matroska, normally .mkv,
but were relabeled as .smff for no apparent reason, or at least no
reason that was present in the commit message or added as a comment.
And then just last week there was a commit that had at least 9 unrelated
changes.


My questions are thus:

  Is smff purely an additional nonstandard/unusual label for mkv, so
  that people with a recording foo.smff can just rename to foo.mkv, and
  then they are usable with standard tools?

  What is the larger situation with smff?  Is the assertion that it is a
  Belledonne-only thing valid?  Why was it created?  What Free software
  deals with it?

  What was the rationale for changing mkv to smff in the source code in
  February of 2025?

  You say you don't have "open core" but you do offer proprietary
  licenses.  I would assume that you mean you sell the right for
  customers to create proprietary derived works, but do not provide them
  with extra proprietary code.  (Perhaps you help them make their
  modifications e.g. white labeling, if that's distinct from having
  withheld changes made available to multiple proprietary customers).
  Is that correct?


  What is really going on with the sources?  It is irregular and very
  unusual to have commits with many unrelated changes from a software
  engineering viewpoint, and that suggests that the public-facing
  repository isn't the real repository, that there is an authoritative
  repository someplace else, and that this is some kind of squash
  commit.  But if linphone is "100% open source" then this sort of
  scheme doesn't make any sense.  It is a barrier to contributor,
  discouraging people from participating.




commit afbf8c1fa4f09affe770475d735555e47c68b237
Author: Julien Wadel <[email protected]>
Date:   Tue Feb 4 11:50:37 2025 +0100

    Change mkv into smff ("Simple Media File Format" which is the Standard 
Matroska file format that supports video, .mkv or .mka file extension)

diff --git a/Linphone/model/call/CallModel.cpp 
b/Linphone/model/call/CallModel.cpp
index 973e01f13..5d46105a7 100644
--- a/Linphone/model/call/CallModel.cpp
+++ b/Linphone/model/call/CallModel.cpp
@@ -55,7 +55,7 @@ void CallModel::accept(bool withVideo) {
        params->setRecordFile(
            Paths::getCapturesDirPath()
                
.append(Utils::generateSavedFilename(QString::fromStdString(mMonitor->getToAddress()->getUsername()),
 ""))
-               .append(".mkv")
+               .append(".smff")
                .toStdString());
        // Answer with local call address.
        auto localAddress = mMonitor->getCallLog()->getLocalAddress();
diff --git a/Linphone/model/tool/ToolModel.cpp 
b/Linphone/model/tool/ToolModel.cpp
index 60666afa3..d4215676f 100644
--- a/Linphone/model/tool/ToolModel.cpp
+++ b/Linphone/model/tool/ToolModel.cpp
@@ -177,7 +177,7 @@ bool ToolModel::createCall(const QString &sipAddress,
                params->setRecordFile(
                    Paths::getCapturesDirPath()
                        
.append(Utils::generateSavedFilename(QString::fromStdString(address->getUsername()),
 ""))
-                       .append(".mkv")
+                       .append(".smff")
                        .toStdString());
        }
 




commit 97b1d11adb8449e6061c52144d59739b7f2c7de2
Author: Gaelle Braud <[email protected]>
Date:   Tue Oct 14 12:42:53 2025 +0200

    Fixes:

    improve unencrypted conversations warning indicator #LINQT-2061

    allow user to choose an address for sending message when multiple addresses 
in contact #LINQT-2054

    verify friend has a core to avoid crash in liblinphone #LINQT-1933

    wait for window to be active before calling markAsRead (fix #LINQT-2048)

    fix button text color (fix #LINQT-1832)

    change format for mkv #LINQT-2056

    Registration : check phone number format #LINQT-2044

    fix window closing even if a new call is started #LINQT-2055

    display popup to delete meetings on right click in meeting list item (allow 
to delete canceled meetings which cannot be displayed in the right panel)

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