Hi all,
I’m having trouble getting sdl output of ffmpeg to work reliably on my Mac. I
want to do an encode and display the video simultaneously. I have been doing
that by piping ffmpeg to ffplay but would like to drop the ffplay, since if I
control-C the process then ffplay quits and the ffmpeg encode doesn’t end
properly (no moov atom, etc). So I’m trying to use -f sdl but getting errors.
ffmpeg -y -f lavfi -i smptebars -t 60 -c:v ffv1 test.mov -f sdl test_sdl
ffmpeg version 2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
built on Oct 6 2014 23:13:22 with Apple LLVM version 6.0 (clang-600.0.51)
(based on LLVM 3.5svn)
configuration: --prefix=/usr/local/Cellar/ffmpeg/2.4.2 --enable-shared
--enable-pthreads --enable-gpl --enable-version3 --enable-nonfree
--enable-hardcoded-tables --enable-avresample --enable-vda --cc=clang
--host-cflags= --host-ldflags= --enable-libx264 --enable-libfaac
--enable-libmp3lame --enable-libxvid --enable-ffplay --enable-libopenjpeg
--disable-decoder=jpeg2000
--extra-cflags='-I/usr/local/Cellar/openjpeg/1.5.1_1/include/openjpeg-1.5 '
libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 1.100 / 56. 1.100
libavformat 56. 4.101 / 56. 4.101
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 1.100 / 5. 1.100
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100
Input #0, lavfi, from 'smptebars':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 320x240 [SAR 1:1
DAR 4:3], 25 tbr, 25 tbn, 25 tbc
[mov @ 0x7febb4018000] Using MS style video codec tag, the file may be
unplayable!
Nov 4 14:22:40 drice.local ffmpeg[98326] <Warning>: CGSConnectionByID: 0 is
not a valid connection ID.
Nov 4 14:22:40 drice.local ffmpeg[98326] <Warning>: Invalid Connection ID 0
2014-11-04 14:22:40.444 ffmpeg[98326:1827165] *** Terminating app due to
uncaught exception 'NSInternalInconsistencyException', reason: 'Error (1000)
creating CGSWindow on line 281'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff8e5e064c
__exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff8d2b96de
objc_exception_throw + 43
2 CoreFoundation 0x00007fff8e5e04fd
+[NSException raise:format:] + 205
3 AppKit 0x00007fff9662d9dd
_NSCreateWindowWithOpaqueShape2 + 1417
4 AppKit 0x00007fff9662bd3c -[NSWindow
_commonAwake] + 1808
5 AppKit 0x00007fff96539ee0 -[NSWindow
_commonInitFrame:styleMask:backing:defer:] + 864
6 AppKit 0x00007fff9653954c -[NSWindow
_initContent:styleMask:backing:defer:contentView:] + 1477
7 AppKit 0x00007fff96538f7a -[NSWindow
initWithContentRect:styleMask:backing:defer:] + 45
8 libSDL-1.2.0.dylib 0x000000010428f21e
-[SDL_QuartzWindow initWithContentRect:styleMask:backing:defer:] + 279
9 libSDL-1.2.0.dylib 0x000000010428cc63
QZ_SetVideoMode + 1417
10 libSDL-1.2.0.dylib 0x0000000104283f71
SDL_SetVideoMode + 906
11 libavdevice.56.dylib 0x0000000102f4ad71
avdevice_free_list_devices + 10775
)
libc++abi.dylib: terminating with uncaught exception of type NSException
Abort trap: 6
Any advice?
Dave Rice
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