December 2007 - ffmpeg-user - lists.ffmpeg.org

.m4a to .flv - image/video fails
by nreddig＠ptd.net 31 Mar '12

31 Mar '12

Hi all, I have greatly appreciated the information I have already gleaned from reading this forum. However I still can not solve my current problem. I am trying to convert from .m4a to .flv. These are podcast files (.m4a) built in garage band. Pictures were added as well and we would like to use this format to create weekly announcements because Garage Band is so easy for our non-technically oriented staff. Using ffmpeg the audio converts just fine but the "video" is not right. I guess it's because these files include chapter data not actual video. However when I convert it to any format the images fly through at different rates, then it seems to get stuck on a picture in the middle. The format I would like to convert to is flash so that I can easy display multiple announcement files using a flash player. I can convert .mov to .flv no problem. Converting .m4a to .mov and then .flv doesn't produce any better results. Here are the before and after files: http://www.warwicksd.org/warwick.m4a http://www.warwicksd.org/output.flv I used the following to get my conversion: ffmpeg -i warwick.m4a -b 300k -r 12 -s 300x300 -ar 22050 -y -ab 96k output.flv FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-libfaac --enable-libfaad --enable- libmp3lame --disable-vhook --enable-shared libavutil version: 49.5.0 libavcodec version: 51.44.0 libavformat version: 51.14.0 built on Oct 22 2007 15:31:25, gcc: 3.3 20030304 (Apple Computer, Inc. build 1640) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'warwick.m4a': Duration: 00:00:55.9, start: 0.000000, bitrate: 100 kb/s Stream #0.0(eng): Audio: mpeg4aac, 44100 Hz, stereo Stream #0.1(eng): Video: mjpeg, yuvj420p, 300x300, 44100.00 fps(r) Stream #0.2(eng): Data: tx3g / 0x67337874 Stream #0.3(eng): Data: text / 0x74786574 Output #0, flv, to 'output.flv': Stream #0.0(eng): Video: flv, yuv420p, 300x300, q=2-31, 300 kb/s, 12.00 fps (c) Stream #0.1(eng): Audio: libmp3lame, 22050 Hz, stereo, 96 kb/s Stream mapping: Stream #0.1 -> #0.0 Stream #0.0 -> #0.1 Press [q] to stop encoding frame= 83 fps= 21 q=2.0 Lsize= 1099kB time=6.9 bitrate=1301.6kbits/s video:70kB audio:657kB global headers:0kB muxing overhead 51.296550% .mov files convert nicely to .flv but these .m4as are just not working. Our current staff is very eager to use these Garage Band files to communicate announcements. I have been so desperate to get this particular file type to convert that I have been experimenting with grabbing the frames every 5 secs. and then rebuilding the images into video. This produces strange results and seems to be more programming then should be necessary. Thanks in advanced for any solutions you can provide. Nancy Reddig Web Programmer Warwick SD

4 3

resize and imlib2 vhook in one command ?
by code＠u-turnmedia.com 02 Oct '08

02 Oct '08

hi, i would like to resize video and overlay with image. when i resize video, e.g. from 624x352 to 320x240, and use imlib2 vhook in one line, i get 320x240 video with small picture in the corner: ffmpeg -i infile.avi -cropright 52 -cropleft 52 -s 320x240 -aspect 1.333 -vhook './imlib2.so -x 0 -y 0 -i image.png' outfile.avi i know that options for imlib2 are -x -y for coordinates, and i would like to know how to use """ Expressions are functions of these variables: N frame number (starting at zero) H frame height W frame width h image height w image width X previous x coordinate of text or image Y previous y coordinate of text or image """ precisely, how do i tell to the image to keep the same size ? do i have to use two commands ? like in first command resize video, and in second use vhook ? thanks Co.De. --

3 2

DVCPRO HD?
by stefan＠sfendt.de 17 Mar '08

17 Mar '08

Hi, if I understand http://www.dcine.com/sightings.html correctly, there allready is DVCPRO HD support in ffmpeg since march 2007? As my current SVN-checkout does not like it nonetheless, do I need to issue any special configure options to enable that codec? Or doesn't ffmpeg support it? cu Stefan

5 8

av_interleaved_write_frame(): Error while opening file
by gfrankliu＠gmail.com 04 Mar '08

04 Mar '08

ffmpeg -i 08112007007.mp4 -ar 22050 -f flv -y frank.flv FFmpeg version SVN-r10986, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --prefix=/usr --libdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include/ffmpeg --enable-libmp3lame --enable-libogg --enable-libvorbis --enable-libfaad --enable-libfaac --enable-pp --enable-shared --enable-pthreads --enable-gpl --enable-libamr-nb --enable-libamr-wb --disable-strip libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 51.18.0 built on Nov 9 2007 17:42:28, gcc: 4.1.1 20070105 (Red Hat 4.1.1-52) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '08112007007.mp4': Duration: 00:00:07.2, start: 0.000000, bitrate: 2504 kb/s Stream #0.0(und): Video: mpeg4, yuv420p, 640x480 [PAR 1:1 DAR 4:3], 30000.00 fps(r) Stream #0.1(und): Audio: mpeg4aac, 48000 Hz, stereo Output #0, flv, to 'frank.flv': Stream #0.0(und): Video: flv, yuv420p, 640x480 [PAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 30000.00 fps(c) Stream #0.1(und): Audio: libmp3lame, 22050 Hz, stereo, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Press [q] to stop encoding error, non monotone timestamps 1 >= 1 av_interleaved_write_frame(): Error while opening file Test file can be found at http://timepassindia.com/08112007007.mp4 Any thoughts? Thanks! Frank

2 1

AVCodecContext->frame_size & Interleave Encoding
by kyle.mallory＠utah.edu 16 Feb '08

16 Feb '08

I'm trying to write a generic encoder (generic = encode multiple formats, codecs), but am using dv/dvvideo as my current test codec. Borrowing code from ffmpeg.c and apiexample.c, I am generating a sample buffer of size avctx->frame_size * sample_size * numchannels. However, pcm_encode_init():107 sets avctx->frame_size = 1. What should the frame-size for dv/pcm_s16le be, and how can I calculate the correct frame-size for different codecs? Also, are there any good examples/tutorials/documentation on how to write interleaved frames when encoding? I've search everywhere and can only seem to find the occasional example of encoding video or encoding audio, but nothing that encodes both, and uses libavformat to interleave them together. thanks, Kyle

2 1

Terrible framerates (muxing overhead?) for x11grab + oss
by chris.lasher＠gmail.com 09 Feb '08

09 Feb '08

I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp. chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196798006.303876, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1196798006.325148, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 276 fps= 29 q=2.0 Lsize= 5283kB time=8.7 bitrate=4983.9kbits/s video:417kB audio:34kB global headers:0kB muxing overhead 1072.708355% Compare this to without capturing from /dev/dsp: chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -qscale 2 -vcodec mpeg4 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196797081.323056, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 370 fps= 32 q=2.0 Lsize= 20575kB time=14.8 bitrate=11388.6kbits/s video:18733kB audio:0kB global headers:0kB muxing overhead 9.830883% I notice a huge difference in the muxing overhead, which has probably caused this choppiness. How can I reduce the muxing overhead to a sane level? Thanks in advance, Chris

2 6

using libavcodec on cygwin, and ability to use ffmpeg to edit video
by jersingsu.tw＠yahoo.com.tw 10 Jan '08

10 Jan '08

Dear~ I used on MinGW on Windows: ./configure --cross-compile --cross-prefix=/usr/local/wince/mingw32ce/arm-wince-mingw32ce/bin/ --arch=armv4l --enable-memalign-hack --prefix=/usr/local/wince --enable-shared --disable-static config.err told me: BEGIN /tmp/ffmpeg-conf-20745-1216-24186.c END /tmp/ffmpeg-conf-20745-1216-24186.c /usr/local/wince/mingw32ce/arm-wince-mingw32ce/bin/gcc -fomit-frame-pointer -c -o /tmp/ffmpeg-conf-18611-1216-29026.o /tmp/ffmpeg-conf-20745-1216-24186.c C compiler test failed. --Kirk --- "jersingsu.tw" <jersingsu.tw at yahoo.com.tw> ?? > Dear~ > > I used : > ./configure --cross-compile > --cross-prefix=/usr/local/wince/mingw32ce/arm-wince-mingw32ce/bin/ > > --arch=armv4l --enable-memalign-hack > --prefix=/usr/local/wince --enable-shared > --disable-static > > config.err told me: > BEGIN /tmp/ffmpeg-conf-20745-1216-24186.c > END /tmp/ffmpeg-conf-20745-1216-24186.c > /usr/local/wince/mingw32ce/arm-wince-mingw32ce/bin/gcc > -fomit-frame-pointer -c -o > /tmp/ffmpeg-conf-18611-1216-29026.o > /tmp/ffmpeg-conf-20745-1216-24186.c > C compiler test failed. > > --Kirk > > --- "jersingsu.tw" <jersingsu.tw at yahoo.com.tw> ?? > > > Dear : > > I also want to cross compile ffmpeg to WinCE code. > > I have downloaded cygwin and arm-wince-mingw32ce . > > Could you tell me how to do it ? > > The URL below can't be opened. > > http://issaris.org/~takis/projects/ffmpeg/docs/ > > Thanks a lot !!! > > --Kirk > > > > --- John Zhang <johnrzhang at gmail.com> ?? > > > > > Hey, thanks for the suggestions! Cygwin Ports > > works > > > great! > > > > > > One more question though, has av_free() been > > > replaced in avcodec.h in the > > > latest release? Sample files which use av_free() > > > fail to compile unless the > > > lines are removed (though I fear this probably > > > introduces serious memory > > > leaks). > > > > > > Thanks again and happy holidays! > > > > > > John > > > > > > > > > > > > On Dec 29, 2007 8:13 AM, V?tor Paesa > > > <wzrlpy at arsystel.com> wrote: > > > > > > > Hi, > > > > John Zhang said: > > > > > Hi, > > > > > > > > > > I have a couple of newbie questions > regarding > > > ffmpeg/libavcodec. > > > > > > > > > > 1. I wonder if anyone can provide some > > pointers > > > on installing > > > > > ffmpeg/libavcodec on cygwin. I'm trying to > > > compile some tutorial source > > > > > files but they often result in a large > number > > of > > > error messages such as > > > > > "undefined reference to...". > > > > > > > > The easiest route is to install the ffmpeg and > > > libav* binary packages from > > > > Cygwin Ports. > > > > If you compiled ffmpeg from source, you need > to > > > use 'make install' and > > > > then rename the DLLs: > > > > > > > > mv cygavutil-49.6.0.dll cygavutil-49.dll > > > > mv cygavcodec-51.49.0.dll cygavcodec-51.dll > > > > mv cygavformat-52.3.0.dll cygavformat-52.dll > > > > mv cygavdevice-52.0.0.dll cygavdevice-52.dll > > > > mv cygswscale-0.5.0.dll cygswscale-0.dll > > > > mv cygavfilter-0.0.0.dll cygavfilter-0.dll > > > > > > > > Make sure you installed the DLLs somewhere in > > your > > > linking path. > > > > > > > > > 2. I'm uncertain if ffmpeg is the best > package > > > for what I wish to do. > > > > > I'm afraid I haven't been able to find a lot > > of > > > documentation and sample > > > > > code, and I was wondering if it would be > > > possible to extract and edit > > > > > frames and re-encode video using libavcodec. > > > > > > > > Yes, it is possible. I'd suggest to start with > > > Taki's tutorials: > > > > > > > > > > http://issaris.org/~takis/projects/ffmpeg/docs/<http://issaris.org/%7Etakis/projects/ffmpeg/docs/> > > > > > > > > Regards, > > > > V?tor > > > > > > > > > > > > > _______________________________________________ > > > > ffmpeg-user mailing list > > > > ffmpeg-user at mplayerhq.hu > > > > > > > > > > http://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user > > > > > > > _______________________________________________ > > > ffmpeg-user mailing list > > > ffmpeg-user at mplayerhq.hu > > > > > > http://lists.mplayerhq.hu/mailman/listinfo/ffmpeg-user > > > > > > > > > > > > > > _____________________________________________________________________________________ > > ??????Yahoo!??????2.0? > > http://tw.mg0.mail.yahoo.com/dc/landing > > > > > > > ______________________________________________________________________________________ > ??????????????????????????????http://tw.promo.yahoo.com/antispam/index.html > _____________________________________________________________________________________ ??????Yahoo!??????2.0? http://tw.mg0.mail.yahoo.com/dc/landing

7 19

Unsupported codec (id=88)
by niklassaers＠gmail.com 09 Jan '08

09 Jan '08

Hi guys, I've compiled ffmpeg with Fink on OS X and I'm trying to encode 3gp files from mobile phones into mpeg4 and h.264 files. But, for my file MOV00037.3gp I get: $ ffmpeg -i MOV00037.3gp movie.mp4 ffmpeg version 0.4.9-pre1, build 4718, Copyright (c) 2000-2004 Fabrice Bellard built on Dec 10 2007 18:17:49, gcc: 4.0.1 (Apple Inc. build 5465) Input #0, mov,mp4,m4a,3gp, from 'MOV00037.3gp': Duration: 00:00:17.3, bitrate: 78 kb/s Stream #0.0: Video: h263, 176x144, 7.51 fps Stream #0.1: Audio: 0x726d6173, 8000 Hz, mono Output #0, mp4, to 'movie.mp4': Stream #0.0: Video: mpeg4, 176x144, 7.51 fps, q=2-31, 200 kb/s Stream #0.1: Audio: 0x0000, 8000 Hz, mono, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Unsupported codec for output stream #0.1 $ ffmpeg -i MOV00037.3gp movie.mpg ffmpeg version 0.4.9-pre1, build 4718, Copyright (c) 2000-2004 Fabrice Bellard built on Dec 10 2007 18:17:49, gcc: 4.0.1 (Apple Inc. build 5465) Input #0, mov,mp4,m4a,3gp, from 'MOV00037.3gp': Duration: 00:00:17.3, bitrate: 78 kb/s Stream #0.0: Video: h263, 176x144, 7.51 fps Stream #0.1: Audio: 0x726d6173, 8000 Hz, mono Output #0, mpeg, to 'movie.mpg': Stream #0.0: Video: mpeg1video, 176x144, 10.00 fps, q=2-31, 200 kb/s Stream #0.1: Audio: mp2, 8000 Hz, mono, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 [mpeg1video @ 0x3f800c]MPEG1/2 doesnt support 10/1 fps Error while opening codec for stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height $ ffmpeg -vcodec h264 -i MOV00037.3gp movie.mov ffmpeg version 0.4.9-pre1, build 4718, Copyright (c) 2000-2004 Fabrice Bellard built on Dec 10 2007 18:17:49, gcc: 4.0.1 (Apple Inc. build 5465) Input #0, mov,mp4,m4a,3gp, from 'MOV00037.3gp': Duration: 00:00:17.3, bitrate: 78 kb/s Stream #0.0: Video: h263, 176x144, 7.51 fps Stream #0.1: Audio: 0x726d6173, 8000 Hz, mono Output #0, mov, to 'movie.mov': Stream #0.0: Video: , 176x144, 7.51 fps, q=2-31, 200 kb/s Stream #0.1: Audio: 0x0000, 8000 Hz, mono, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #0.1 -> #0.1 Unsupported codec for output stream #0.0 There is no problem reading the file, if I do $ ffmpeg -i MOV00037.3gp movie%d.jpg I get the images just fine. How should I best convert the .3gp movie to mpeg4 og h.264 format? Cheers Niklas

3 5

Problem when building with --enable-shared in Linux
by stefano.sabatini-lala＠poste.it 08 Jan '08

08 Jan '08

Hi all, I'm configuring with: configure --prefix=$HOME --enable-shared and no other options. The when linking ffmpeg_g I get: gcc -L"/home/stefano/src/ffmpeg"/libavdevice -L"/home/stefano/src/ffmpeg"/libavformat -L"/home/stefano/src/ffmpeg"/libavcodec -L"/home/stefano/src/ffmpeg"/libavutil -L/home/stefano/lib -rdynamic -export-dynamic -Wl,--warn-common -Wl,--as-needed -Wl,-rpath-link,"/home/stefano/src/ffmpeg"/libavcodec -Wl,-rpath-link,"/home/stefano/src/ffmpeg"/libavformat -Wl,-rpath-link,"/home/stefano/src/ffmpeg"/libavutil -Wl,-Bsymbolic -g -o ffmpeg_g ffmpeg.o cmdutils.o -lavdevice -lavformat -lavcodec -lavutil -lz -lm -ldl -ldl (yes I aslo tried to remove the -L/home/stefano/lib option): /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_encode_comment' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_num_channels' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecSetConfiguration' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_encode_YUVin' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecClose' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_analysis' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `faacEncGetCurrentConfiguration' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecGetCurrentConfiguration' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_encode_header' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_block_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_comment_clear' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_analysis_wrote' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_comment_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_info_clear' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_comment_add_tag' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_analysis_headerout' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_encode_buffer' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `faacEncEncode' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecGetErrorMessage' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_close' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_info_clear' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_dsp_clear' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_VBR' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `faacEncGetDecoderSpecificInfo' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_encode_setup_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `faacEncClose' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_bitrate_flushpacket' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_out_samplerate' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_encode_packetout' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_brate' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_block_clear' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_encode_setup_managed' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_get_framesize' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_encode_flush' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_encode_ctl' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_encode_setup_vbr' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_quality' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_info_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_clear' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_analysis_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_bitrate_addblock' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecOpen' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecDecode' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecInit' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_analysis_blockout' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_init_params' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_bWriteVbrTag' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `faacEncSetConfiguration' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_encode_tables' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `faacEncOpen' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_comment_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_encode_buffer_interleaved' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_mode' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_analysis_buffer' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_in_samplerate' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_set_VBR_q' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_info_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `lame_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `theora_encode_init' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `NeAACDecInit2' /home/stefano/src/ffmpeg/libavformat/libavformat.so: undefined reference to `vorbis_comment_clear' collect2: ld returned 1 exit status make: *** [ffmpeg_g] Error 1 stefano at geppetto ~/s/ffmpeg> find . -name '*.[ch]' | xargs grep vorbis_analysis? ?_blockout ./libavcodec/libvorbis.c: while(vorbis_analysis_blockout(&context->vd, &context->vb) == 1) { stefano at geppetto ~/s/ffmpeg> nm libavcodec/libavcodec.so | grep theora 0031d7a0 t theora_decode_init 00437a80 D theora_decoder Why are all the symbols for the various lame, theora, faac etc. libraries referenced here (although I'm not using --enable-lame, ... at all)? Am I missing something obvious or am I hitting some bugs in the build system? Many thanks in advance, regards. -- ffmpeg-user random tip #21 Create a video from a single image: ffmpeg -loop_input -f image2 -i image.jpeg -t 20 image-movie.mpeg

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[FFmpeg-user] "av_open_input_file" on Windows CE
by robertogarridomartin＠gmail.com 04 Jan '08

04 Jan '08

Hi everyone! I'm having troubles with the method av_open_input_file on the Windows CE platform. I have the next code: // Open video file int result = av_open_input_file(&pFormatCtx, filename.c_str(), NULL, 0, NULL); where filename contains the string "/test.mpeg" On the other hand, I have in the root directory of the PDA the file test.mpeg. When the file is not there, the error returned is "-2". And when the file is in the root directory, the error code is "-138". I've been searching through the code for the error codes, but I haven't found them. Anybody knows why am I having this error? Thanks in advance, and happy new year, Roberto

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