https://bugs.kde.org/show_bug.cgi?id=384764
--- Comment #7 from mikko.rap...@iki.fi ---
Running with my old pet peeve where I remove the caching and frame dropping
from kdenlive rendering, since on these old machines I get better performance
that way:
diff --git a/src/renderer.cpp b/src/renderer.cpp
index e839d10b0..5b87caec9 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -754,9 +754,12 @@ void Render::switchPlay(bool play, double speed)
m_mltProducer->seek(0);
}
if (m_mltConsumer->get_int("real_time") != m_qmlView->realTime()) {
- m_mltConsumer->set("real_time", m_qmlView->realTime());
- m_mltConsumer->set("buffer", 25);
- m_mltConsumer->set("prefill", 1);
+ //m_mltConsumer->set("real_time", m_qmlView->realTime());
+ m_mltConsumer->set("buffer", 0);
+ m_mltConsumer->set("prefill", 0);
+ // try to avoid fps drop in preview:
+ m_mltConsumer->set("drop_max", 1);
+ m_mltConsumer->set("real_time", 0);
// Changes to real_time require a consumer restart if running.
if (!m_mltConsumer->is_stopped()) {
m_mltConsumer->stop();
@@ -771,7 +774,7 @@ void Render::switchPlay(bool play, double speed)
}
m_mltProducer->set_speed(speed);
} else {
- m_mltConsumer->set("real_time", -1);
+ m_mltConsumer->set("real_time", 0);
m_mltConsumer->set("buffer", 0);
m_mltConsumer->set("prefill", 0);
m_mltProducer->set_speed(0.0);
@@ -794,9 +797,12 @@ void Render::play(double speed)
resetZoneMode();
}
if (speed != 0 && m_mltConsumer->get_int("real_time") !=
m_qmlView->realTime()) {
- m_mltConsumer->set("real_time", m_qmlView->realTime());
- m_mltConsumer->set("buffer", 25);
- m_mltConsumer->set("prefill", 1);
+ //m_mltConsumer->set("real_time", m_qmlView->realTime());
+ m_mltConsumer->set("buffer", 0);
+ m_mltConsumer->set("prefill", 0);
+ // try to avoid fps drop in preview:
+ m_mltConsumer->set("drop_max", 0);
+ m_mltConsumer->set("real_time", 0);
// Changes to real_time require a consumer restart if running.
if (!m_mltConsumer->is_stopped()) {
m_mltConsumer->stop();
@@ -926,7 +932,7 @@ void Render::setDropFrames(bool drop)
dropFrames = -dropFrames;
}
//m_mltConsumer->stop();
- m_mltConsumer->set("real_time", dropFrames);
+ //m_mltConsumer->set("real_time", dropFrames);
if (m_mltConsumer->start() == -1) {
qCWarning(KDENLIVE_LOG) << "ERROR, Cannot start monitor";
}
This is slightly better at around 10 fps in 1080p25 mode when previewing proxy
clips, but there is a quite easily triggered crash where stack trace actually
shows that the frame was rendered in 1080 format from proxy clip which is
640x360:
Thread 12 "FrameRenderer" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fe3be453700 (LWP 18154)]
#0 0x00007fe41cba1ee3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#1 0x00007fe41cbbf99e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#2 0x00007fe41cbf9c26 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#3 0x00007fe41cc004bf in QRasterPaintEngine::drawImage(QPointF const&, QImage
const&) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#4 0x00007fe41cc1d8af in QPainter::drawImage(QPointF const&, QImage const&) ()
from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
No symbol table info available.
#5 0x00007fe3d2f8a979 in QPainter::drawImage (flags=..., sh=-1, sw=-1, sy=0,
sx=0, image=..., y=0, x=0, this=0x7fe3be452428)
at /usr/include/x86_64-linux-gnu/qt5/QtGui/qpainter.h:858
sy = 0
sw = -1
image = @0x7fe3be452460: <incomplete type>
y = 0
this = 0x7fe3be452428
sx = 0
sh = -1
x = 0
#6 get_image (a_frame=a_frame@entry=0x7fe3a8014170,
image=image@entry=0x7fe3be452650, format=format@entry=0x7fe3be45269c,
width=width@entry=0x7fe3be452694, height=height@entry=0x7fe3be452698,
writable=writable@entry=0) at transition_qtblend.cpp:190
error = <optimized out>
b_frame = <optimized out>
b_properties = <optimized out>
properties = 0x7fe3a8014170
transition_properties = <optimized out>
b_image = 0x7fe3907f9020
"13N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066Q\377\063\066Q\377\063\066Q\377\065\070T\377\065\070T\377"...
hasAlpha = <optimized out>
opacity = 1
b_width = 1920
b_height = 1080
transform = {affine = {_m11 = 1, _m12 = 0, _m21 = 0, _m22 = 1,
_dx = 0, _dy = 0}, m_13 = 0, m_23 = 0, m_33 = 1, m_type = 0,
m_dirty = 0, d = 0x0}
rect = {x = <optimized out>, y = <optimized out>, w = <optimized out>,
h = -1, o = <optimized out>}
length = <optimized out>
position = <optimized out>
profile = <optimized out>
normalised_width = 1920
normalised_height = 1080
output_ar = <optimized out>
interps = <optimized out>
image_size = 0
a_image = 0x7fe3867fd020 ""
hqPainting = false
bottomImg = <incomplete type>
topImg = <incomplete type>
painter = {static staticMetaObject = {d = {superdata = 0x0,
stringdata = 0x7fe41cd6eca0, data = 0x7fe41cd6ebe0,
static_metacall = 0x0, relatedMetaObjects = 0x0,
extradata = 0x0}}, d_ptr = {d = 0x7fe3b000dde0}}
#7 0x00007fe426311c87 in mlt_frame_get_image (self=self@entry=0x7fe3a8014170,
buffer=buffer@entry=0x7fe3be452650, format=format@entry=0x7fe3be45269c,
width=width@entry=0x7fe3be452694, height=height@entry=0x7fe3be452698,
writable=writable@entry=0) at mlt_frame.c:585
properties = 0x7fe3a8014170
get_image = 0x7fe3d2f8a5c0 <get_image(mlt_frame, uint8_t**,
mlt_image_format*, int*, int*, int)>
requested_format = <optimized out>
error = 0
#8 0x00007fe426327cc9 in producer_get_image (self=self@entry=0x7fe3a8149cf0,
buffer=buffer@entry=0x7fe3be452650, format=format@entry=0x7fe3be45269c,
width=width@entry=0x7fe3be452694, height=height@entry=0x7fe3be452698,
writable=writable@entry=0) at mlt_tractor.c:370
data = 0x0
size = 0
properties = 0x7fe3a8149cf0
frame = 0x7fe3a8014170
frame_properties = 0x7fe3a8014170
#9 0x00007fe426311c87 in mlt_frame_get_image (self=0x7fe3a8149cf0,
buffer=buffer@entry=0x7fe3be452650, format=format@entry=0x7fe3be45269c,
width=width@entry=0x7fe3be452694, height=height@entry=0x7fe3be452698,
writable=writable@entry=0) at mlt_frame.c:585
properties = 0x7fe3a8149cf0
get_image = 0x7fe426327b60 <producer_get_image>
requested_format = <optimized out>
error = 0
#10 0x00007fe4260f774b in Mlt::Frame::get_image (
this=this@entry=0x7fe3be452700, format=@0x7fe3be45269c: mlt_image_rgb24a,
format@entry=@0x7fe3be45269c: mlt_image_yuv420p, w=@0x7fe3be452694: 1920,
w@entry=@0x7fe3be452694: 0, h=@0x7fe3be452698: 1080,
h@entry=@0x7fe3be452698: 0, writable=writable@entry=0) at MltFrame.cpp:83
image = 0x7fe3b000d7e0
"13N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\061\063N\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066P\377\063\066Q\377\063\066Q\377\063\066Q\377\065\070T\377\065\070T\377"...
#11 0x000055599248f095 in FrameRenderer::showFrame (
this=this@entry=0x555995539e60, frame=...)
at ./src/monitor/glwidget.cpp:1323
width = 1920
height = 1080
format = mlt_image_rgb24a
#12 0x00005559925fe53c in FrameRenderer::qt_static_metacall (
_o=0x555995539e60, _id=<optimized out>, _a=<optimized out>,
_c=<optimized out>)
at
./obj-x86_64-linux-gnu/src/kdenlive_autogen/T5U2TTTZLX/moc_glwidget.cpp:772
_t = 0x555995539e60
#13 0x00007fe41c40f3d2 in QObject::event(QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#14 0x00007fe41fbcd46c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#15 0x00007fe41fbd4d34 in QApplication::notify(QObject*, QEvent*) ()
from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
No symbol table info available.
#16 0x00007fe41c3dfd68 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#17 0x00007fe41c3e24dd in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#18 0x00007fe41c438dd3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#19 0x00007fe415594f67 in g_main_context_dispatch ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#20 0x00007fe4155951a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#21 0x00007fe41559522c in g_main_context_iteration ()
from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#22 0x00007fe41c4383ff in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#23 0x00007fe41c3dddba in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#24 0x00007fe41c1fd3ca in QThread::exec() ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#25 0x00007fe41c20229d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
No symbol table info available.
#26 0x00007fe4187e1494 in start_thread (arg=0x7fe3be453700)
at pthread_create.c:333
__res = <optimized out>
pd = 0x7fe3be453700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140616126510848,
780787169714677039, 0, 140733228324927, 0, 140617891983424,
-787402878124382929, -784231928223193809},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0},
data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
__PRETTY_FUNCTION__ = "start_thread"
#27 0x00007fe41b607abf in clone ()
at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
So, would be really nice that for preview, the rendering resolution would be
the render window size and not the full project profile which then needs to be
downscaled to the small preview screen.
The scaling for proxy clips is now done twice: once by mlt to render 640x to
1080x and then by the viewer to downscale 1080x to what ever 300x is the size
of preview.
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