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• ffmpeg on Ubuntu-Linux - Cross-compile fails

  3 janvier 2018, par A.b.t.13

  (First of all i would like to sorry for any grammar mistakes, and to mention that I’m pretty much new to Linux :))
  I’m having a really hard time trying to compile all the files related to the ’ffmpeg’ command-line tool in my Ubuntu-16.04 environment.

  I’ve download the ffmpeg files from this link - http://www.ffmpeg.org/
  extracted the files, and installed it by the instruction that supplied in the INSTALL.md file inside the folder.

  The process went well, but when i tried to run by this example :

  ffmpeg -i band_8k8k_3dv_projection.mp4 -filter_complex "[0:v]split=13[pr1][pr2][pr3][pr4][pr5][pr6][pr7][pr8][pr9][pr10][pr11][pr12][pr13] ;[pr1]crop=2048:2048:0:0[crp1] ;[pr2]crop=2048:2048:2048:0[crp2] ;[pr3]crop=2048:2048:4096:0[crp3] ;[pr4]crop=2048:2048:0:2048[crp4] ;[pr5]crop=2048:2048:2048:2048[crp5] ;[pr6]crop=2048:2048:4096:2048[crp6] ;[pr7]crop=2048:2048:0:4096[crp7] ;[pr8]crop=2048:2048:2048:4096[crp8] ;[pr9]crop=2048:2048:4096:4096[crp9] ;[pr10]crop=2048:2048:0:6144[crp10] ;[pr11]crop=2048:2048:2048:6144[crp11] ;[pr12]crop=2048:2048:4096:6144[crp12] ;[pr13]scale=6144:h=8192[pr13s] ;[pr13s][crp1]overlay=4096:0[ov1] ;[ov1][crp2]overlay=0:0[ov2] ;[ov2][crp3]overlay=4096:2048[ov3] ;[ov3][crp4]overlay=2048:2048[ov4] ;[ov4][crp5]overlay=2048:0[ov5] ;[ov5][crp6]overlay=0:2048[ov6] ;[ov6][crp7]overlay=4096:4096[ov7] ;[ov7][crp8]overlay=0:4096[ov8] ;[ov8][crp9]overlay=4096:6144[ov9] ;[ov9][crp10]overlay=2048:6144[ov10] ;[ov10][crp11]overlay=2048:4096[ov11] ;[ov11][crp12]overlay=0:6144[first] ;[first]split=22[prj1][prj2][prj3][prj4][prj5][prj6][prj7][prj8][prj9][prj10][prj11][prj12][prj13][prj14][prj15][prj16][prj17][prj18][prj19][prj20][prj21][prj22] ;[prj1]crop=1034:1034:0:0,pad=iw*2:ih[pd1] ; [prj2]crop=1034:1034:0:0[cp1] ; [pd1][cp1]overlay=w, scale=1504:h=464,setsar=1/1[crop1] ;[prj3]crop=1034:1034:0:0,pad=iw*2:ih[pd2] ; [prj4]crop=1034:1034:0:0[cp2] ; [pd2][cp2]overlay=w, scale=1504:h=464,setsar=1/1[crop2] ;[prj5]crop=1034:1034:0:0,pad=iw*2:ih[pd3] ; [prj6]crop=1034:1034:0:0[cp3] ; [pd3][cp3]overlay=w, scale=1504:h=464,setsar=1/1[crop3] ;[prj7]crop=1034:1034:0:0,pad=iw*2:ih[pd4] ; [prj8]crop=1034:1034:0:4096[cp4] ; [pd4][cp4]overlay=w, scale=1504:h=464,setsar=1/1[crop4] ;[prj9]crop=1034:1034:1014:0,pad=iw*2:ih[pd5] ; [prj10]crop=1034:1034:1014:4096[cp5] ; [pd5][cp5]overlay=w, scale=1504:h=464,setsar=1/1[crop5] ;[prj11]crop=1034:1034:2048:0,pad=iw*2:ih[pd6] ; [prj12]crop=1034:1034:2048:4096[cp6] ; [pd6][cp6]overlay=w, scale=1504:h=464,setsar=1/1[crop6] ;[prj13]crop=1034:1034:3062:0,pad=iw*2:ih[pd7] ; [prj14]crop=1034:1034:3062:4096[cp7] ; [pd7][cp7]overlay=w, scale=1504:h=464,setsar=1/1[crop7] ;[prj15]crop=1034:1034:4096:0,pad=iw*2:ih[pd8] ; [prj16]crop=1034:1034:4096:4096[cp8] ; [pd8][cp8]overlay=w, scale=1504:h=464,setsar=1/1[crop8] ;[prj17]crop=1034:1034:5110:0,pad=iw*2:ih[pd9] ; [prj18]crop=1034:1034:5110:4096[cp9] ; [pd9][cp9]overlay=w, scale=1504:h=464,setsar=1/1[crop9] ;[prj19]crop=1034:1034:0:1014,pad=iw*2:ih[pd10] ; [prj20]crop=1034:1034:0:5110[cp10] ; [pd10][cp10]overlay=w, scale=1504:h=464,setsar=1/1[crop10] ;[prj21]crop=1034:1034:1014:1014,pad=iw*2:ih[pd11] ; [prj22]crop=1034:1034:1014:5110[cp11] ; [pd11][cp11]overlay=w, scale=1504:h=464,setsar=1/1[crop11] ;[crop1]pad=iw:480*11,split=2[paded1][paded1a] ;[paded1][crop2]overlay=0:480*1[paded2] ;[paded2][crop3]overlay=0:480*2[paded3] ;[paded3][crop4]overlay=0:480*3[paded4] ;[paded4][crop5]overlay=0:480*4[paded5] ;[paded5][crop6]overlay=0:480*5[paded6] ;[paded6][crop7]overlay=0:480*6[paded7] ;[paded7][crop8]overlay=0:480*7[paded8] ;[paded8][crop9]overlay=0:480*8[paded9] ;[paded9][crop10]overlay=0:480*9[paded10] ;[paded10][crop11]overlay=0:480*10[out_no_black0] ;[paded1a]crop=1504:480,split=3[black0][black1][black2] ;[out_no_black0][black0]overlay=0:480*0[out_no_black1] ;[out_no_black1][black1]overlay=0:480*1[out_no_black2] ;[out_no_black2][black2]overlay=0:480*2[out_no_black3] ;[out_no_black3]crop=in_w:in_h" -preset slow -r 30 -pix_fmt yuv420p -movflags +faststart -coder 1 -cmp chroma -me_range 48 -me_method umh -subq 9 -refs 6 -b_strategy 2 -bf 16 -flags +loop+mv4+cgop -flags2 +local_header -forced-idr 1 -threads 0 -c:v libx264 -profile:v high -level 5.1 -x264opts "keyint=30:no-scenecut:min-keyint=30:fps=30" -b:v 70000k -maxrate 70000k -bufsize 140000k -slices 11 -c:a copy -f mp4 "band_8k8k_3dv_line_0_70000k.mp4" -y

  I’ve got this error :
  enter image description here

  I’ve looked for this problem, and found out that this unrecognized option may related to the lack of the library called "libx264".
  According to instruction i’ve found in this link - http://trac.ffmpeg.org/wiki/CompilationGuide/Ubuntu

  I configured the ffmpeg again with those flags —enable-gpl —enable-libx264 , installed th libx264 by this command - sudo apt-get install libx264-dev, all of those action went well, but when i try to compile it all together - i do it by running the command of ’make -j 10’ or just ’make’, when i’m inside the folder where all of the ffmpeg files are extracted to, i face this error -
  enter image description here

  Thanks for anyone who could help !

• RTSP Streaming on Jetson Xavier NX, Ubuntu 20.04 [closed]

  12 décembre 2023, par Jan

  i am working on a project, where i want to create a rtsp live server from a USB Camera.
To do that i downloaded the mediamtx rtsp server.

  


  Then i am pushing the stream from the camera to the rtsp server, and display it using ffplay, or OpenCV in C++.

  


  This is working, however i get a very low quality, and a delay of up to 1 second.

  


  Is there any way to improve the delay ? If possible i would like to have the same quality and delay as if i read it with gst-launch-1.0.

  


  The command for ffmpeg was

  


  ffmpeg -i /dev/video0 -s 1280x720 -vsync 0 - f rtsp rtsp://localhost:8554/mystream


  


  I also tried to utilize the hardware acceleration with cuda

  


  ffmpeg -i /dev/video0 -s 1280x720 -vsync 0 -hwaccel cuda -hwaccel_output_format cuda -f x11grab -fflags nobuffer -i :0.0+0.0 -preset ultrafast -vcodec libx264 - tune zerolatency -g 1 -omit_video_pes_length 0 - f rtsp rtsp://localhost:8554/mystream


  


  With this I get a better quality, but the delay is still very bad.

  


  Any ideas on how to get a live stream with < 100ms ?&#xA;Did I maybe miss out some additional parameters for ffmpeg that resolve that problem ?

  &#xA;

• Install ffmpeg on ubuntu [closed]

  17 décembre 2022, par Muhammad Irfan Ghori

  I am trying to install ffmpeg 3.3.4

  &#xA;

  wget https://www.ffmpeg.org/releases/ffmpeg-3.3.4.tar.bz2 export TMPDIR=$HOME/tmp

  &#xA;

  Installing libraries

  &#xA;

  sudo apt-get install libfontconfig1-dev
sudo apt-get install libmp3lame-dev
sudo apt-get install speex-dev
sudo apt-get install libtheora-dev
sudo apt-get install libvorbis-dev
sudo apt-get install libssl-dev
sudo apt-get install libx264-dev
sudo apt-get install libx265-dev


  &#xA;

  then

  &#xA;

  ./configure --prefix=/usr --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/local/lib --incdir=/usr/include/lib --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libx265 --enable-libx264 --enable-openssl --enable-nonfree --disable-yasm

  &#xA;

  then

  &#xA;

  make && sudo make install

  &#xA;

  I then get the error :

  &#xA;

  libavcodec/libx264.c: In function ‘X264_frame’:
libavcodec/libx264.c:282:9: error: ‘x264_bit_depth’ undeclared (first use in this function)
  282 |     if (x264_bit_depth > 8)
      |         ^~~~~~~~~~~~~~
libavcodec/libx264.c:282:9: note: each undeclared identifier is reported only once for each function it appears in
libavcodec/libx264.c: In function ‘X264_init_static’:
libavcodec/libx264.c:892:9: error: ‘x264_bit_depth’ undeclared (first use in this function)
  892 |     if (x264_bit_depth == 8)
      |         ^~~~~~~~~~~~~~
make: *** [common.mak:60: libavcodec/libx264.o] Error 1


  &#xA;