2009/6/23 Matthew Hallin <m...@geebroadcast.co.uk> > 2009/6/17 Baptiste Coudurier <baptiste.coudur...@gmail.com> > >> Matthew Hallin wrote: >> > 2009/6/17 Baptiste Coudurier <baptiste.coudur...@gmail.com> >> > >> >> Hi, >> >> >> >> On 6/17/2009 9:09 AM, Matthew Hallin wrote: >> >>> Here is the output from gdb >> >>> >> >>> Program received signal SIGSEGV, Segmentation fault. >> >>> ff_set_qscale (s=0xa5113d0, qscale=<value optimized out>) >> >>> at libavcodec/mpegvideo.c:2356 >> >>> 2356 s->y_dc_scale= s->y_dc_scale_table[ qscale ]; >> >>> Current language: auto; currently c >> >>> (gdb) backtrace >> >>> #0 ff_set_qscale (s=0xa5113d0, qscale=<value optimized out>) >> >>> at libavcodec/mpegvideo.c:2356 >> >>> #1 0x0814a385 in encode_thread (c=0xa511020, arg=0xa5114a4) >> >>> at libavcodec/mpegvideo_enc.c:2060 >> >>> #2 0x080dbbda in avcodec_default_execute (c=0xa511020, >> >>> func=0x8149fd0 <encode_thread>, arg=0xa5114a4, ret=0x0, count=1, >> >> size=4) >> >>> at libavcodec/utils.c:411 >> >>> #3 0x081340bf in MPV_encode_picture (avctx=0xa511020, buf=0xb7b04008 >> "", >> >>> buf_size=829440, data=0xa559a90) at >> libavcodec/mpegvideo_enc.c:2923 >> >>> #4 0x080dd790 in avcodec_encode_video (avctx=0xa511020, >> buf=0xb7b04008 >> >> "", >> >>> buf_size=829440, pict=0xa559a90) at libavcodec/utils.c:527 >> >>> #5 0x0804a310 in main () at ffmpeg-test2.cpp:175 >> >>> >> >>> I tried to rebuild with --disable-optimizations with the hope that it >> may >> >>> then show me the value of qscale but it would not build. >> >> One file needs -O1 because of register allocation failing, you should >> be >> >> able to compile it manually, yes it's annoying. Sorry for that. >> >> You can add also --enable-debug=gdb3 >> >> >> >> PS: please do not top-post on this mailing list. Thanks for your >> >> understanding. >> >> >> > >> > Thanks for your reply, but I am not sure I understand. >> > I you saying that I need to compile a single file with -O1 option? If so >> > which file? mpegvideo.c ? >> >> The one not compiling, I don't think it is mpegvideo.c but dsputil_mmx.c >> >> > I will try it tomorrow and let you know. >> >> Ok. >> >> > Thanks for you great help. >> > I hope this is bottom posted! >> >> Yes, it is, thanks. >> >> -- >> Baptiste COUDURIER GnuPG Key Id: 0x5C1ABAAA >> Key fingerprint 8D77134D20CC9220201FC5DB0AC9325C5C1ABAAA >> FFmpeg maintainer http://www.ffmpeg.org >> _______________________________________________ >> libav-user mailing list >> libav-user@mplayerhq.hu >> https://lists.mplayerhq.hu/mailman/listinfo/libav-user >> > > Hello, I am afraid I need more help with this. I do not understand. Are you > saying that a file did not compile or just that I need to recompile with > different options? (or both?). How can I tell which file did not compile? > make completed and the binaries were created so I assumed it was ok. > How can I compile a specific file with -O1, I assume I will need all the > other complier options used in a normal build. Can you give me the actual > commands? > Let me know > Thanks > Matt > > > -- > Gee Broadcast Systems > Telephone: +44 1256 810123 > Web: www.geebroadcast.co.uk >
Further to above, I edited config.mak and in the OPTFLAGS section set -O3 to -O1 and rebuilt but it still crashes. I understand that I am down grading the optimisation on the whole thing but should that not have worked? Let me know Thanks Matt -- Gee Broadcast Systems Telephone: +44 1256 810123 Web: www.geebroadcast.co.uk _______________________________________________ libav-user mailing list libav-user@mplayerhq.hu https://lists.mplayerhq.hu/mailman/listinfo/libav-user
