I'm trying to integrate ffmpeg and QT 4.5.2 together - just testing.
Running into problems. Here it is, plain and simple:
Even though I'm linking against -lavcodec -lavformat -lswscale -lavutil,
I'm still getting a bunch of undefined reference errors for avcoded_*
stuff and av_free and sws_getContext, etc. See below. Any bloody ideas??
I've been googling and banging my head against this for hours! Any
ideas? Thanks in advance for any help.
g++ -Wl,-O1 -Wl,-rpath,/usr/local/Trolltech/Qt-4.5.2/lib
-Wl,-rpath,/usr/local/Trolltech/Qt-4.5.2/lib -o QT_ffmpeg_video
.obj/release-shared/playmessage.o .obj/release-shared/VideoThread.o
.obj/release-shared/VideoWidget.o .obj/release-shared/main.o
.obj/release-shared/moc_playmessage.o
.obj/release-shared/moc_VideoThread.o
.obj/release-shared/moc_VideoWidget.o -L/opt/qtsdk/qt/lib -lavcodec
-lavformat -lswscale -lavutil -lQtGui -L/opt/qtsdk/qt/lib
-L/usr/X11R6/lib -pthread -lpng -lfreetype -lgobject-2.0 -lSM -lICE
-pthread -pthread -lXrender -lfontconfig -lXext -lX11 -lQtCore -lz -lm
-pthread -lgthread-2.0 -lrt -lglib-2.0 -lpthread -ldl
.obj/release-shared/VideoThread.o: In function `VideoThread::playVideo()':
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:53: undefined
reference to `av_register_all()'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:56: undefined
reference to `av_open_input_file(AVFormatContext**, char const*,
AVInputFormat*, int, AVFormatParameters*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:60: undefined
reference to `av_find_stream_info(AVFormatContext*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:64: undefined
reference to `dump_format(AVFormatContext*, int, char const*, int)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:81: undefined
reference to `avcodec_find_decoder(CodecID)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:86: undefined
reference to `avcodec_open(AVCodecContext*, AVCodec*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:95: undefined
reference to `avcodec_alloc_frame()'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:98: undefined
reference to `avcodec_alloc_frame()'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:107: undefined
reference to `avpicture_get_size(PixelFormat, int, int)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:113: undefined
reference to `avpicture_get_size(PixelFormat, int, int)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:121: undefined
reference to `avpicture_fill(AVPicture*, unsigned char*, PixelFormat,
int, int)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:127: undefined
reference to `sws_getContext(int, int, PixelFormat, int, int,
PixelFormat, int, SwsFilter*, SwsFilter*, double const*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:154: undefined
reference to `av_free_packet(AVPacket*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:131: undefined
reference to `av_read_frame(AVFormatContext*, AVPacket*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:138: undefined
reference to `avcodec_decode_video(AVCodecContext*, AVFrame*, int*,
unsigned char const*, int)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:145: undefined
reference to `sws_scale(SwsContext*, unsigned char**, int*, int, int,
unsigned char**, int*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:159: undefined
reference to `av_free(void*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:162: undefined
reference to `av_free(void*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:165: undefined
reference to `avcodec_close(AVCodecContext*)'
/opt/qtsdk/qt/examples/QT_ffmpeg_video/VideoThread.cpp:168: undefined
reference to `av_close_input_file(AVFormatContext*)'
collect2: ld returned 1 exit status
make: *** [QT_ffmpeg_video] Error 1
Regards,
-josiah
-=-=-=-=-=-=-=-=-=-=-=-=-
Josiah Bryan
Productive Concepts, Inc.
[email protected]
(765) 964-6009, ext. 224
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