March 2007 - ffmpeg-user - lists.ffmpeg.org

Hitting an assert decompressing h264
by greg＠agog.com 28 Mar '07

28 Mar '07

ffmpeg: mpegvideo.c:1540: MPV_frame_start: Assertion `s->last_picture_ptr==((void *)0) || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3' failed. Aborted ffmpeg svn revision 8540 x264 svn revision 635 Commands used: ./ffmpeg -y -s 640x480 -i /tmp/test.yuv -vcodec h264 /tmp/a.avi ./ffmpeg -y -i /tmp/a.avi /tmp/out.yuv Linux 2.6.18-1.2798.fc6 gcc version 4.1.1 20061011 (Red Hat 4.1.1-30) FFmpeg version SVN-r8540, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-libfaac --enable-x264 --enable-gpl --enable-pp --enable-pthreads --enable-libmp3lame --disable-ffplay --disable-ffserver --enable-libnut --disable-mmx libavutil version: 49.4.0 libavcodec version: 51.40.2 libavformat version: 51.11.0 built on Mar 28 2007 16:49:47, gcc: 4.1.1 20061011 (Red Hat 4.1.1-30) tag: tag=LIST size=0x11e8 list: tag=hdrl size=0x0 tag: tag=avih size=0x38 tag: tag=LIST size=0x1090 list: tag=strl size=0x0 tag: tag=strh size=0x38 strh: tag=vids size=0xffffffff tag: tag=strf size=0x28 video: tag=H264 size=0x0 tag: tag=JUNK size=0x1014 tag: tag=JUNK size=0x104 tag: tag=LIST size=0x18 list: tag=INFO size=0x0 tag: tag=ISFT size=0xc tag: tag=JUNK size=0x3f8 tag: tag=LIST size=0x4d0aa list: tag=movi size=0x0 movi end=4e6ce Input #0, avi, from '/tmp/a.avi': Duration: 00:00:06.0, start: 0.000000, bitrate: 431 kb/s Stream #0.0: Video: h264, yuv420p, 640x480, 25.00 fps(r) Output #0, rawvideo, to '/tmp/out.yuv': Stream #0.0: Video: rawvideo, yuv420p, 640x480, q=2-31, 200 kb/s, 25.00 fps(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding ffmpeg: mpegvideo.c:1540: MPV_frame_start: Assertion `s->last_picture_ptr==((void *)0) || s->out_format != FMT_H264 || s->codec_id == CODEC_ID_SVQ3' failed. Aborted The encoding command output ./ffmpeg -y -s 640x480 -i /tmp/test.yuv -vcodec h264 /tmp/a.avi FFmpeg version SVN-r8540, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-libfaac --enable-x264 --enable-gpl --enable-pp --enable-pthreads --enable-libmp3lame --disable-ffplay --disable-ffserver --enable-libnut --disable-mmx libavutil version: 49.4.0 libavcodec version: 51.40.2 libavformat version: 51.11.0 built on Mar 28 2007 16:49:47, gcc: 4.1.1 20061011 (Red Hat 4.1.1-30) Input #0, rawvideo, from '/tmp/test.yuv': Duration: N/A, bitrate: N/A Stream #0.0: Video: rawvideo, yuv420p, 640x480, 25.00 fps(r) Output #0, avi, to '/tmp/a.avi': Stream #0.0: Video: h264, yuv420p, 640x480, q=2-31, 200 kb/s, 25.00 fps(c) Stream mapping: Stream #0.0 -> #0.0 [h264 @ 0x84c179c]using cpu capabilities MMX MMXEXT SSE SSE2 3DNow! Press [q] to stop encoding frame= 150 fps= 29 q=-1.0 Lsize= 316kB time=6.0 bitrate= 431.5kbits/s video:307kB audio:0kB global headers:0kB muxing overhead 2.977927% [h264 @ 0x84c179c]slice I:13 Avg QP:29.23 size: 13301 [h264 @ 0x84c179c]slice P:137 Avg QP:31.00 size: 1025 [h264 @ 0x84c179c]mb I I16..4: 53.9% 0.0% 46.1% [h264 @ 0x84c179c]mb P I16..4: 5.0% 0.0% 0.0% P16..4: 16.7% 0.0% 0.0% 0.0% 0.0% skip:78.3% [h264 @ 0x84c179c]final ratefactor: 31.06 [h264 @ 0x84c179c]SSIM Mean Y:0.9616698 [h264 @ 0x84c179c]kb/s:417.8

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MPEG2 Video + max bitrate
by H.NS.Duden＠gmx.net 28 Mar '07

28 Mar '07

Hi everyone, I'm trying to encode MPEG2 video so that the bitrate is variable but never exceeds a certain limit. My limit in this case is 9MBit/s (for DVD video). I tried the following: ffmpeg -i input.m2v -b 8000000 -bt 1000000 output.m2v Unfortunately the bitrate exceeds 9 MBit/s in some places (sometimes by quite a lot). Then I tried this: ffmpeg -i input.m2v -b 4000000 -bt 1000000 output.m2v And the bitrate still sometimes goes over 9 MBit/s. Last but not least I tried this: ffmpeg -i input.m2v -b 8000000 -maxrate 9000000 output.m2v This produced the error: [mpeg2video @ 6C15E000]a vbv buffer size is needed, for encoding with a maximum bitrate I'm not certain what the vbv buffer size is, so I don't really know what a good value would be. Do you have any suggestions? Thanks! Hauke

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Combining Two Videos
by qasemkhan＠gmail.com 28 Mar '07

28 Mar '07

I want to combine two videos such that we can see them on one screen. i.e. half screen for one video. Now my question is that is it possible using ffmpeg? if it is than what is the right way to do this.

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Problem setting the thumbnail size
by totob＠libero.it 28 Mar '07

28 Mar '07

Hello everybody, I need to create a thumbnail with an height set with the value of 165. When i try to run the command, I get the message "Frame size must be a multiple of 2" and the thumb is not created. I need the thumb to be this size (180*165), how can I do? I am using this syntax: ffmpeg -i input.flv -an -y -s 180x165 -ss 5 -f mjpeg C:\temp_img.jpg -vframes 1 Thanks to anyone who can help me!! ------------------------------------------------------ Leggi GRATIS le tue mail con il telefonino i-mode? di Wind http://click.libero.it/imode

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Sequence of BMP's resulting on a video file
by c00jz3r0＠gmail.com 28 Mar '07

28 Mar '07

Hi there, I have a sequence of BMP's. I want to form a single video coded in H.263. Can I do this with ffmpeg? It's only complaining that he doesn't know the bmp format... $ ffmpeg -f image2 -i bitmap/bmp0.bmp teste.h263 FFmpeg version SVN-r8538, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-shared --disable-static --enable-memalign-hack --disable-debug libavutil version: 49.4.0 libavcodec version: 51.40.2 libavformat version: 51.11.0 built on Mar 28 2007 13:59:47, gcc: 3.4.5 (mingw special) [image2 @ 6C358054]Could not find codec parameters (Video: bmp) bitmap/bmp0.bmp: could not find codec parameters Any suggestions?

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about watermark images
by prawin.smart＠gmail.com 28 Mar '07

28 Mar '07

Hi all, I am new to ffmpeg, actually i want to put gif images into the video clip for that i am usingt this command : ffmpeg -i inputfile -vhook '/usr/lib/vhook/watermark.so -f cnn.gif -m 0 -t ffffff' -sameq output.mpg but after executing this command the image size is becomming larger ,I am unable to get the actual size for the image in the clip.The actual size of the gif image is 200x40 and i want to put that image to the bottom right hand side. For this i need some help regarding the parameters. So plz help me in this regard, and its urgent. PRAVEEN

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ffmpeg compilation error under cygwin
by asterefred＠hotmail.com 28 Mar '07

28 Mar '07

i have managed to successfully compile ffmpeg under msys/mingw32. i decided then to enable vhook support on ffmpeg but unfortunately, ffmpeg with vhook enable cannot be compiled under msys/mingw32. i read that cygwin could do it. - my first configure line that i used to compile ffmpeg under cygwin is ../configure --enable-memalign-hack --enable-static --disable-shared --disable-network --extra-cflags=-mno-cygwin --extra-libs=-mno-cygwin i wanted to see if ffmpeg would compile without vhook under cygwin there were some error during the make process and i had to patch the following: - mathops.h - common.mak - configure - faac.c - mpegaudiodec.c make -C libavutil all make[1]: Entering directory `/home/ffmpeg/libavutil' make[1]: Nothing to be done for `all'. make[1]: Leaving directory `/home/ffmpeg/libavutil' make -C libavcodec all make[1]: Entering directory `/home/ffmpeg/libavcodec' rm -f libavcodec.a ar rc libavcodec.a bitstream.o utils.o allcodecs.o mpegvideo.o jrevdct.o jfdctfs t.o jfdctint.o mjpeg.o resample.o resample2.o dsputil.o motion_est.o imgconvert. o mpeg12.o mpegaudiodec.o simple_idct.o ratecontrol.o eval.o error_resilience.o fft.o mdct.o raw.o golomb.o cabac.o faandct.o parser.o vp3dsp.o h264idct.o range coder.o pnm.o h263.o msmpeg4.o h263dec.o opt.o bitstream_filter.o audioconvert.o imgresample.o i386/fdct_mmx.o i386/cputest.o i386/dsputil_mmx.o i386/mpegvideo_ mmx.o i386/motion_est_mmx.o i386/simple_idct_mmx.o i386/idct_mmx_xvid.o i386/fft _sse.o i386/vp3dsp_mmx.o i386/vp3dsp_sse2.o i386/fft_3dn.o i386/fft_3dn2.o i386/ snowdsp_mmx.o i386/cavsdsp_mmx.o aasc.o ac3enc.o alac.o asv1.o avs.o bmp.o cavs. o cavsdsp.o cinepak.o cljr.o cook.o cscd.o lzo.o cyuv.o dsicinav.o dvbsubdec.o d vbsub.o dvdsubdec.o dvdsubenc.o dv.o 8bps.o ffv1.o huffyuv.o flac.o flacenc.o fl ashsv.o flashsvenc.o flicvideo.o 4xm.o fraps.o gifdec.o lzw.o gif.o h261.o h264. o idcinvideo.o imc.o indeo2.o indeo3.o interplayvideo.o dpcm.o kmvc.o loco.o mac e.o mmvideo.o mpegaudio.o mpc.o msrle.o msvideo1.o lcl.o nuv.o rtjpeg.o png.o qd m2.o qdrw.o qpeg.o qtrle.o ra144.o ra288.o roqvideo.o rpza.o rv10.o shorten.o sm acker.o smc.o snow.o sonic.o svq1.o targa.o vp3.o tiertexseqv.o tiff.o truemotio n1.o truemotion2.o truespeech.o tscc.o tta.o ulti.o vc1.o vc1dsp.o vcr1.o vmdav. o vmnc.o vorbis.o vorbis_data.o vorbis_enc.o vp5.o vp56.o vp56data.o vp6.o vqavi deo.o wavpack.o wmadec.o wnv1.o ws-snd1.o xan.o xl.o zmbv.o zmbvenc.o pcm.o adpc m.o adx.o g726.o ranlib libavcodec.a make[1]: Leaving directory `/home/ffmpeg/libavcodec' make -C libavformat all make[1]: Entering directory `/home/ffmpeg/libavformat' gcc -I"/home/ffmpeg"/libavcodec -DHAVE_AV_CONFIG_H -D_FILE_OFFSET_BITS=64 -D_LA RGEFILE_SOURCE -D_ISOC9X_SOURCE -I"/home/ffmpeg" -I"/home/ffmpeg" -I"/home/ffmpe g"/libavutil -mno-cygwin -fomit-frame-pointer -g -Wdeclaration-after-statement - Wall -Wno-switch -Wdisabled-optimization -Wpointer-arith -Wredundant-decls -O3 -c -o audio.o audio.c In file included from audio.c:21: avformat.h:255: warning: `AVFrac' is deprecated (declared at avformat.h:94) audio.c:29:27: sys/soundcard.h: No such file or directory audio.c:33:23: sys/ioctl.h: No such file or directory audio.c:34:22: sys/mman.h: No such file or directory audio.c: In function `audio_open': audio.c:79: warning: implicit declaration of function `fcntl' audio.c:79: error: `F_SETFL' undeclared (first use in this function) audio.c:79: error: (Each undeclared identifier is reported only once audio.c:79: error: for each function it appears in.) audio.c:79: error: `O_NONBLOCK' undeclared (first use in this function) audio.c:91: warning: implicit declaration of function `ioctl' audio.c:91: error: `SNDCTL_DSP_GETFMTS' undeclared (first use in this function) audio.c:102: error: `AFMT_S16_LE' undeclared (first use in this function) audio.c:104: error: `AFMT_S16_BE' undeclared (first use in this function) audio.c:123: error: `SNDCTL_DSP_SETFMT' undeclared (first use in this function) audio.c:130: error: `SNDCTL_DSP_STEREO' undeclared (first use in this function) audio.c:139: error: `SNDCTL_DSP_SPEED' undeclared (first use in this function) audio.c: In function `audio_read_packet': audio.c:253: error: storage size of 'abufi' isn't known audio.c:259: error: `fd_set' undeclared (first use in this function) audio.c:259: error: parse error before "fds" audio.c:264: warning: implicit declaration of function `FD_ZERO' audio.c:264: error: `fds' undeclared (first use in this function) audio.c:265: warning: implicit declaration of function `FD_SET' audio.c:268: warning: implicit declaration of function `select' audio.c:91: warning: redundant redeclaration of 'ioctl' audio.c:91: warning: previous implicit declaration of 'ioctl' was here audio.c:289: error: `SNDCTL_DSP_GETISPACE' undeclared (first use in this functio n) audio.c:253: warning: unused variable `abufi' make[1]: *** [audio.o] Error 1 make[1]: Leaving directory `/home/ffmpeg/libavformat' make: *** [lib] Error 2 thanks for the help K _________________________________________________________________ Txt a lot? 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About the watermark image
by prawin.smart＠gmail.com 28 Mar '07

28 Mar '07

Hi all, I am new to ffmpeg, actually i want to put gif images into the video clip for that i am usingt this command : ffmpeg -i inputfile -vhook '/usr/lib/vhook/watermark.so -f cnn.gif -m 0 -t ffffff' -sameq output.mpg but after executing this command the image size is becomming larger ,I am unable to get the actual size for the image in the clip.The actual size of the gif image is 200x40 and i want to put that image to the bottom right hand side. For this i need some help regarding the parameters. So plz help me in this regard, and its urgent. praveen

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How read_packet is registered
by jemmorgade＠gmail.com 28 Mar '07

28 Mar '07

Hello: Could someone give me a hint about how the function read_packet(..) is defined in an AVInputFormat struct? I need to find how to read an MPEG4 (or h263) raw sequence directly from a file, decode it and encode it again after some changes in the frames. Thanks in advance. -- Greetings Q.

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decoding from a circular memory buffer
by siahwb＠yahoo.com.sg 28 Mar '07

28 Mar '07

Hi All, I believe quite a number of people had already ask this before.. But I need someone to point me to the right place to find the solution. Basically, I am looking to modify the ffmpeg to read from a circular memory buffer and decode the buffer to stream... Anyone help? - Bernard

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