GNOME Bugzilla – Bug 688116
Some H.264 MP4 files don't show the video or crash the player
Last modified: 2012-12-19 16:59:05 UTC
Created attachment 228737 [details] sample file Attached is a sample file. I have many files with the same characteristics (that were grabbed from the web a while ago). These used to play fine with some version of gstreamer 0.10.x, but I recently started noticing (with 0.10.36 and such) that they wouldn't play anymore in totem: they would show a black screen, sometimes wouldn't seek, and their properties would say the resolution is 0x0. Testing with GStreamer 1.0.2 through pitivi's built-in video player, I get a segfault/crash that takes down pitivi entirely. Here is a backtrace: (gdb) set pagination 0 (gdb) run bin/pitivi Starting program: /usr/bin/python bin/pitivi [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/libthread_db.so.1". process 10454 is executing new program: /usr/bin/env process 10454 is executing new program: /usr/bin/python2.7 Missing separate debuginfos, use: debuginfo-install coreutils-8.15-7.fc17.i686 [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/libthread_db.so.1". warning: the debug information found in "/usr/lib/debug//lib/libdbus-1.so.3.5.6.debug" does not match "/lib/libdbus-1.so.3" (CRC mismatch). warning: the debug information found in "/usr/lib/debug/usr/lib/libfreebl3.so.debug" does not match "/lib/libfreebl3.so" (CRC mismatch). warning: the debug information found in "/usr/lib/debug//lib/libcom_err.so.2.1.debug" does not match "/lib/libcom_err.so.2" (CRC mismatch). [New Thread 0xb6472b40 (LWP 10457)] [New Thread 0xb5ad9b40 (LWP 10458)] [Thread 0xb5ad9b40 (LWP 10458) exited] [New Thread 0xb5ad9b40 (LWP 10459)] [Thread 0xb5ad9b40 (LWP 10459) exited] Detaching after fork from child process 10460. [New Thread 0xb5ad9b40 (LWP 10462)] [New Thread 0xaf311b40 (LWP 10463)] [New Thread 0xae97ab40 (LWP 10464)] [New Thread 0xad23cb40 (LWP 10465)] [New Thread 0xaca3bb40 (LWP 10466)] [New Thread 0xac23ab40 (LWP 10467)] [New Thread 0xaba39b40 (LWP 10468)] [New Thread 0xab0ffb40 (LWP 10469)] [New Thread 0xaa8feb40 (LWP 10470)] [Thread 0xaca3bb40 (LWP 10466) exited] [Thread 0xaba39b40 (LWP 10468) exited] [Thread 0xac23ab40 (LWP 10467) exited] [Thread 0xad23cb40 (LWP 10465) exited] [Thread 0xab0ffb40 (LWP 10469) exited] [Thread 0xaf311b40 (LWP 10463) exited] [Thread 0xb6472b40 (LWP 10457) exited] [Thread 0xae97ab40 (LWP 10464) exited] [Thread 0xb5ad9b40 (LWP 10462) exited] [New Thread 0xae97ab40 (LWP 10471)] [New Thread 0xb5ad9b40 (LWP 10472)] [New Thread 0xb6472b40 (LWP 10473)] [New Thread 0xaf311b40 (LWP 10474)] [New Thread 0xad23cb40 (LWP 10475)] [New Thread 0xaca3bb40 (LWP 10476)] [New Thread 0xac23ab40 (LWP 10477)] [New Thread 0xab0ffb40 (LWP 10478)] [New Thread 0xa9cffb40 (LWP 10479)] [Thread 0xad23cb40 (LWP 10475) exited] [Thread 0xac23ab40 (LWP 10477) exited] [Thread 0xaf311b40 (LWP 10474) exited] [Thread 0xaca3bb40 (LWP 10476) exited] [New Thread 0xac23ab40 (LWP 10480)] [New Thread 0xaca3bb40 (LWP 10481)] [New Thread 0xad23cb40 (LWP 10482)] [New Thread 0xaf311b40 (LWP 10483)] [New Thread 0xa94feb40 (LWP 10484)] [New Thread 0xa8cfdb40 (LWP 10485)] [New Thread 0xa44fbb40 (LWP 10486)] [New Thread 0xa3cfab40 (LWP 10487)] [New Thread 0xa34f9b40 (LWP 10488)] [New Thread 0xa2cf8b40 (LWP 10489)] [New Thread 0xa24f7b40 (LWP 10490)] [New Thread 0xa1cf6b40 (LWP 10491)] [New Thread 0xa14f5b40 (LWP 10492)] [New Thread 0xa0cf4b40 (LWP 10493)] [New Thread 0xa04f3b40 (LWP 10494)] [New Thread 0x9fcf2b40 (LWP 10495)] [Thread 0xa0cf4b40 (LWP 10493) exited] [Thread 0xa14f5b40 (LWP 10492) exited] [Thread 0xa24f7b40 (LWP 10490) exited] [Thread 0xa1cf6b40 (LWP 10491) exited] [New Thread 0xa0cf4b40 (LWP 10496)] [New Thread 0xa14f5b40 (LWP 10497)] [New Thread 0xa1cf6b40 (LWP 10498)] [New Thread 0xa24f7b40 (LWP 10499)] [New Thread 0x9f4f1b40 (LWP 10500)] Program received signal SIGSEGV, Segmentation fault.
+ Trace 231160
Thread 3058117440 (LWP 10473)
(gdb)
This video doesn't play either anymore (blank white screen appears). Worked fine in previous version of gstreamer. rtmp://cp100692.edgefcs.net/ondemand/mp4:hd/1112/1111121400_zaitun_live_768Kbps_360p.mp4
Jeff: with 0.10.36 I too get a black screen, but I have no problems with it in 1.x whatsoever, not with 1.0.1 nor with git master. Does it crash during normal playback already, or just when you seek/scrub? Can you make i crash with gst-launch-1.0 playbin uri=file:///path/to/foo.mp4 video=sink='navseek ! xvimagesink' and arrows right/left ? The crash in g_slice* stuff is not a good sign. Perhaps you could run things in valgrind to see what shows up? And/or possibly also with G_SLICE=debug-blocks?
Ah, with the gst-launch command you gave me, it doesn't crash during playback, though it doesn't do anything when I try to use the right/left arrows to seek. ...and of course, now that I retry on pitivi + gst 1.0.2 with the sample I provided, it doesn't crash, it plays and seeks fine, etc. Ugh :)
Have you ever got that crash again, or can we close this as obsolete? I've tried again to reproduce it with git master and can't, not with totem nor with the playback test app.
Guess not then. Please re-open or file a new bug if you run into it again, thanks.