Opened 7 years ago
Closed 6 years ago
#6240 closed defect (needs_more_info)
HandBrake 1.0.3 segfaults or encodes 0 frames with FFmpeg 3.1.7 (works with 3.2.4)
Reported by: | Dominik Mierzejewski | Owned by: | |
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Priority: | important | Component: | undetermined |
Version: | 3.1.5 | Keywords: | crash handbrake |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
Summary of the bug:
HandBrake 1.0.3 segfaults in decomb filter (when encoding anything using default settings) or encodes 0 frames (if I disable the filter in video filters tab) when built with FFmpeg 3.1.7 (works with 3.2.4)
How to reproduce:
Case 1:
- (On Fedora 25,) build HandBrake 1.0.3 against FFmpeg 3.1.7.
- In ghb, open any video file and click "start encoding".
- ghb segfaults in decomb filter:
[...] Thread 27 "ghb" received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7fffe1016700 (LWP 31173)] detect_gamma_combed_segment (segment_stop=204, segment_start=0, pv=0x7fffd80008c0) at ../libhb/comb_detect.c:443 443 int height = pv->ref[0]->plane[pp].height; (gdb) bt full #0 detect_gamma_combed_segment (segment_stop=204, segment_start=0, pv=0x7fffd80008c0) at ../libhb/comb_detect.c:443 y = <optimized out> x = <optimized out> stride = <optimized out> width = <optimized out> height = -671059792 mthresh = <optimized out> athresh = <optimized out> athresh6 = <optimized out> pp = <optimized out> #1 decomb_filter_thread (thread_args_v=0x7fffd801a870) at ../libhb/comb_detect.c:1061 pp = 0 pv = <optimized out> segment = 0 segment_start = 0 segment_stop = 204 thread_args = 0x7fffd801a870 #2 0x000000000046887b in hb_thread_func (_t=0x7fffd8001070) at ../libhb/ports.c:860 t = 0x7fffd8001070 #3 0x00007ffff25006ca in start_thread (arg=0x7fffe1016700) at pthread_create.c:333 __res = <optimized out> pd = 0x7fffe1016700 now = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736968353536, 3440324452558995082, 0, 140736250525967, 140736968354240, 140736968353536, -3440258779170570614, -3440300979176309110}, 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" #4 0x00007fffed607f7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105 No locals.
Case 2:
- (On Fedora 25,) build HandBrake 1.0.3 against FFmpeg 3.1.7.
- In ghb, open any video file.
- Disable deinterlacing filters in video filtering tab.
- Click "start encoding".
- ghb doesn't crash, but encodes 0 video frames.
All the above works fine if built against FFmpeg 3.2.4.
HandBrake upstream has already said using FFmpeg is an unsupported configuration as they support libav only: https://github.com/HandBrake/HandBrake/issues/631 . However, I'd appreciate any help in identifying where the bug is.
Change History (2)
comment:1 by , 7 years ago
Keywords: | crash added |
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Priority: | normal → important |
comment:2 by , 6 years ago
Keywords: | handbrake added |
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Resolution: | → needs_more_info |
Status: | new → closed |
Please reopen this ticket if you can provide us with the relevant commit.
Please bisect to find out which commit fixed the crash.