Meng, Thanks for the detailed reply. I have one more question for you, i have dump of decrypted rtp(video) packets, i want to generate the .h264 from that. I know we cannot directly give the file to ffmpeg, any idea on what all needs to be done for the same ?
Regards On Fri, Jun 1, 2018 at 2:05 PM, 刘 猛 <meng.w...@outlook.com> wrote: > > run : ffmpeg -i flame.avi ,then the output is: > > ffmpeg version 2.8.14-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg > developers > built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.9) 20160609 > configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 > --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu > --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl > --enable-shared --disable-stripping --disable-decoder=libopenjpeg > --disable-decoder=libschroedinger --enable-avresample --enable-avisynth > --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray > --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite > --enable-libfontconfig --enable-libfreetype --enable-libfribidi > --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame > --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp > --enable-libschroedinger --enable-libshine --enable-libsnappy > --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora > --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack > --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi > --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 > --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 > --enable-libopencv > libavutil 54. 31.100 / 54. 31.100 > libavcodec 56. 60.100 / 56. 60.100 > libavformat 56. 40.101 / 56. 40.101 > libavdevice 56. 4.100 / 56. 4.100 > libavfilter 5. 40.101 / 5. 40.101 > libavresample 2. 1. 0 / 2. 1. 0 > libswscale 3. 1.101 / 3. 1.101 > libswresample 1. 2.101 / 1. 2.101 > libpostproc 53. 3.100 / 53. 3.100 > Input #0, avi, from 'flame.avi': > Duration: 00:00:03.14, start: 0.000000, bitrate: 736 kb/s > Stream #0:0: Video: indeo4 (IV41 / 0x31345649), yuv410p, 256x240, 731 > kb/s, 35 fps, 35 tbr, 35 tbn, 35 tbc > > From the output, we can konw that the codec of video in flame.avi is not > h264. So, you can not use -vcodec copy . > > try this: > ffmpeg -i flame.avi -c:v libx264 -f h264 stream1.h264 > > > ________________________________ > 发件人: ffmpeg-user <ffmpeg-user-boun...@ffmpeg.org> 代表 Robert Clove < > cloverob...@gmail.com> > 发送时间: 2018年6月1日 1:11 > 收件人: FFmpeg user questions > 主题: Re: [FFmpeg-user] Can someone point me to a libavformat file > > Thanks for the reply. > i downloaded the avi file from here > engr.colostate.edu/me/facil/dynamics/avis.htm > <http://www.engr.colostate.edu/me/facil/dynamics/avis.htm> and did this > [http://www.engr.colostate.edu/me/facil/dynamics/images/cbw3.jpg]< > http://www.engr.colostate.edu/me/facil/dynamics/avis.htm> > > High Speed Camera Sample AVI's - Home - Walter Scott, Jr ...< > http://www.engr.colostate.edu/me/facil/dynamics/avis.htm> > www.engr.colostate.edu > High Speed Camera Sample AVI's drop.avi (660K) flame.avi (282K) bird.avi > (1.42MB) cbw3.avi (817KB) > > > > ffmpeg.exe -i flame.avi -an -vcodec copy stream1.h264, i am getting error > on this. > > On Fri, Jun 1, 2018 at 1:26 PM, Moritz Barsnick <barsn...@gmx.net> wrote: > > > On Fri, Jun 01, 2018 at 11:33:26 +0530, Robert Clove wrote: > > > Can someone point me to a libavformat file for which i can use the > > > > What is a libavformat file? You probably mean an AVI file? > > > > > following command ffmpeg -i abc.avi -an -vcodec copy stream.264 > > > > Provided your ffmpeg supports H.264 encoding, e.g. with libx264, you > > can create your own: > > > > $ ffmpeg -f lavfi -i testsrc2=d=10 -c:v libx264 abc.avi > > > > Cheers, > > Moritz > > _______________________________________________ > > ffmpeg-user mailing list > > ffmpeg-user@ffmpeg.org > > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > > > To unsubscribe, visit link above, or email > > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".