Assertion `!c->out.queue_len' failed.

[CarlFK]

added a .dv and a .png to the time line.
output.dv: DIF (DVCPRO) movie file (NTSC)
conk1.png: PNG image data, 1024 x 768, 8-bit/color RGB, non-interlaced

zoomed in on transition from .dv to png (no effect, just end/start), hit play, when it hit the png, crash.

shotcut: ../../src/xcb_conn.c:186: write_vec: Assertion `!c->out.queue_len' failed.

re-ran, play, crash again.

Now trying to reproduce, doesn't crash.

[ddennedy]

Unable to reproduce.

[CarlFK]

I get that error intermittently.
I run this:
carl@twist:~/bin$ Shotcut/Shotcut.app/shotcut ~/Videos/test1.mlt

app opens, files load, starts playing...
after a random amount of time (yep) it errors. or not. seems about 50/50.

tried 2 or 3 times with gdb, no crash.

[ddennedy]

Next version does not autoplay multitrack and playlist .mlt files. That might affect this, but I will try to repro with this new info. Thanks

[CarlFK]

I'll upload the 3 files

On Fri, Jan 30, 2015 at 3:13 PM, Dan Dennedy notifications@github.com
wrote:

Next version does not autoplay multitrack and playlist .mlt files. That
might affect this, but I will try to repro with this new info. Thanks

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Reply to this email directly or view it on GitHub
#49 (comment).

Carl K

[ddennedy]

I'll upload the 3 files

please don't. I am not offering to give this the level of attention you
may be expecting.

[CarlFK]

ok.

I just started a new project with new source files - did lots of work
(previewing scrubbing, cutting, added some video fade in/out) and as it was
playing, crash.

confirming same line:
shotcut: ../../src/xcb_conn.c:186: write_vec: Assertion `!c->out.queue_len'
failed.

On Fri, Jan 30, 2015 at 3:28 PM, Dan Dennedy notifications@github.com
wrote:

I'll upload the 3 files

please don't. I am not offering to give this the level of attention you
may be expecting.

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#49 (comment).

Carl K

[metellius]

For the record, I have also had this crash a few times on 15.05.06

[ddennedy]

This bug report linked below explains how the bug is related to Mesa and libxcb and fixed in libxcb v1.11. Some distro packages may have back-ported the fix to an earlier version. Lots of good links in that bug report to learn more.
glfw/glfw#386

I use nvidia GL, which explains why I never saw this bug. Closing this as "not my bug."