Problème avec avidemux

Bonjour,

depuis un mois je suis satisfait d'Avidemux, mais aujourd'hui il bloque.
j'ai 71 ans et je ne comprends pas l'anglais.
Voici le message :
EXCEPTION_ACCESS_VIOLATION
ADM_audioCompareChannelMapping(WAVHeader*, WAVHeader*, CHANNEL_TYPE*, CHANNEL_TYPE*) [avidemux.exe]
ADM_setCrashHook [libADM_core6.dll]
ADM_setCrashHook [libADM_core6.dll]
ADM_setCrashHook [libADM_core6.dll]
UnhandledExceptionFilter [KERNELBASE.dll]
memset [ntdll.dll]
_C_specific_handler [ntdll.dll]
_chkstk [ntdll.dll]
RtlRaiseException [ntdll.dll]
KiUserExceptionDispatcher [ntdll.dll]
ADM_audioCompareChannelMapping(WAVHeader*, WAVHeader*, CHANNEL_TYPE*, CHANNEL_TYPE*) [avidemux.exe]
AUDMAudioFilterMixer::fill(unsigned int, float*, AUD_Status*) [avidemux.exe]
GUIPlayback::audioPump(bool) [avidemux.exe]
GUIPlayback::run() [avidemux.exe]
GUI_PlayAvi() [avidemux.exe]
HandleAction(Action) [avidemux.exe]
MainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [avidemux.exe]
QMetaObject::activate(QObject*, int, int, void**) [Qt5Core.dll]
MainWindow::actionSignal(Action) [avidemux.exe]
MainWindow::buttonPressed() [avidemux.exe]
MainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [avidemux.exe]
QMetaObject::activate(QObject*, int, int, void**) [Qt5Core.dll]
QAbstractButton::toggled(bool) [Qt5Widgets.dll]
QAbstractButton::keyPressEvent(QKeyEvent*) [Qt5Widgets.dll]
QAbstractButton::mouseReleaseEvent(QMouseEvent*) [Qt5Widgets.dll]
QToolButton::mouseReleaseEvent(QMouseEvent*) [Qt5Widgets.dll]
QWidget::event(QEvent*) [Qt5Widgets.dll]
QToolButton::event(QEvent*) [Qt5Widgets.dll]
QApplicationPrivate::notify_helper(QObject*, QEvent*) [Qt5Widgets.dll]
QApplication::notify(QObject*, QEvent*) [Qt5Widgets.dll]
QCoreApplication::notifyInternal2(QObject*, QEvent*) [Qt5Core.dll]
QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) [Qt5Widgets.dll]
QDesktopWidget::qt_metacall(QMetaObject::Call, int, void**) [Qt5Widgets.dll]
QDesktopWidget::qt_metacall(QMetaObject::Call, int, void**) [Qt5Widgets.dll]
QApplicationPrivate::notify_helper(QObject*, QEvent*) [Qt5Widgets.dll]
QApplication::notify(QObject*, QEvent*) [Qt5Widgets.dll]
QCoreApplication::notifyInternal2(QObject*, QEvent*) [Qt5Core.dll]
QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) [Qt5Gui.dll]
QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) [Qt5Gui.dll]
QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) [Qt5Gui.dll]
QEventDispatcherWin32Private::sendTimerEvent(int) [Qt5Core.dll]
CallWindowProcW [USER32.dll]
DispatchMessageW [USER32.dll]
QEventDispatcherWin32::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) [Qt5Core.dll]
qt_plugin_instance [qwindows.dll]
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) [Qt5Core.dll]
QCoreApplication::exec() [Qt5Core.dll]
UI_RunApp() [avidemux.exe]
startAvidemux(int, char**) [avidemux.exe]
SDL_main [avidemux.exe]
ms2timedisplay(unsigned int) [avidemux.exe]
unknown function [avidemux.exe]
unknown function [avidemux.exe]
BaseThreadInitThunk [KERNEL32.DLL]
RtlUserThreadStart [ntdll.dll]


je vous en remercie par avance.
bien cordialement,