Opened 15 years ago
Closed 15 years ago
#6489 closed patch (wontfix)
win32 directx audio sync fix
| Reported by: | Owned by: | Nigel | |
|---|---|---|---|
| Priority: | minor | Milestone: | unknown |
| Component: | Ports - Windows | Version: | 0.21-fixes |
| Severity: | medium | Keywords: | |
| Cc: | Ticket locked: | no |
Description
directx AV sync problems due to calc bugs in audiooutput_dx
Attachments (4)
Change History (7)
Changed 15 years ago by
| Attachment: | audio_dx.patch added |
|---|
comment:1 follow-up: 2 Changed 15 years ago by
HD h264 content still appears to have audio sync issues. The issue may be with the version of ffmpeg in the fixes branch. However, previously I was able to play the content -- but the sound was severely out of sync, with the patch applied mythfrontend crashes when it attempts to resync the audio.
Despite compiling with --enable-symbol-visibility and --compile-type=debug, I was unable to run the frontend with debugging symbols in gdb. I have included a backtrack from windows crash manager and a (limited) gdb backtrace.
(gdb) bt full #0 0x683d024c in ff_imdct_calc_sse (s=0x1d27d6b0, output=0x7c96f0a0,
input=0xffffffff, tmp=0x7c96f07c) at i386/fft_sse.c:170
k = 0 n8 = 128 n4 = 489114528 n2 = 489151152 n = 32 revtab = (const uint16_t *) 0x1bd0ec88 tcos = (const FFTSample *) 0x40 tsin = (const FFTSample *) 0x80 in1 = (const FFTSample *) 0x100 in2 = (const FFTSample *) 0xf90f6a0 z = (FFTComplex *) 0x1d27d6b0
#1 0x1bd0ee78 in ?? () No symbol table info available.
comment:2 Changed 15 years ago by
Replying to majost@lagparty.org: Your gdb backtrace shows only fft_sse.c, which is quite low-level stuff in ffmpeg. With such limited info, I can't see a connection with AVsync. My own limited testing with 720p h264 files hasn't produced any crashes.
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