Recherche avancée

Sur d’autres sites (14329)

• How to fix EXT-X-MAP:URI in m3u8 when specifying absolute hls_fmp4_init_filename using ffmpeg ?

  29 février 2020, par Ryan

  Today I found this blog post teaching me about fragmented mp4s (fmp4s).

  Using the ffmpeg docs, I’ve made great progress.

  I run this :

  '/usr/bin/ffmpeg' '-y' '-i' '/myproject/storage/app/sample_media/2020-02-27/Sample Videos 5.mp4' \
  
  '-c:v' 'libx264' '-s:v' '1920x1080' \
  
   '-crf' '20' '-sc_threshold' '0' '-g' '48' '-keyint_min' '48' \
  
  '-hls_list_size' '0' '-hls_time' '10' '-hls_allow_cache' '0' '-b:v' '4889k' \
  
  '-maxrate' '5866k' '-hls_segment_type' 'fmp4' \
  
  '-hls_fmp4_init_filename' '/myproject/public/storage/000000002/init.mp4' \
  
  '-hls_segment_filename' '/myproject/public/storage/000000002/list_1080p_%04d.m4s' \
  
  '-hls_key_info_file' '/myproject/hls_hls.keyInfo' '-strict' '-2' '-threads' '12' \
  
  '/myproject/public/storage/000000002/list_1080p.m3u8'

  And then I use hls.js on my webpage to try to show the video.

  Initially, it won’t load.

  But then I can get the video to load properly if I refresh the page after making this edit to list_1080p.m3u8 :

  Change from :

  #EXT-X-MAP:URI="/myproject/public/storage/000000002/init.mp4"

  To :

  #EXT-X-MAP:URI="init.mp4"

  How can I change my ffmpeg command so that it knows the absolute path of where to save the init.mp4 but also knows to write in the m3u8 only the filename init.mp4 without any path ?

  (I’ve tried using -hls_fmp4_init_filename init.mp4 without the abosolute path, but then it creates the init.mp4 at the root, which also doesn’t work. I need each video’s init.mp4 to be in its own folder.)

• FFMPEG Video loop from images files

  27 février 2020, par Nesan Mano

  I am trying to make a video from a bundle of image files and then apply a an overlay on top of it.Another requirement is to make the video loop 3x. It is simply not working.

  The first three paths are pointing toward the same image bundle. (A folder containing images like the following DSC0001_0013.jpg,DSC0002_0013.jpg,etc)

  Observed symptoms :

  The script runs infinitely.I produces a video file of 0 KB.I have to abort script using CTRL+C

  This is my script.

  ffmpeg 
  
  -start_number 1 -framerate 3/1 
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\xxx\xxx\xxx\xxx\xxx\963d9d9b8e1\DSC%04d_0013.jpg"
  
  
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\xxx\xxx\xxx\xxx\963d9d9b8e1\DSC%04d_0013.jpg"
  
  
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\xxx\xxx\xxx\xxx\963d9d9b8e1\DSC%04d_0013.jpg"
  
  
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\1237\1138\overlay.png" 
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\1237\1138\overlay.png" 
  
  -i "C:\Users\xxx\AppData\Local\xxx\xxx\projects\1237\1138\overlay.png" 
  
  -filter_complex " [0:v]scale=600x900[scaled1]; [1:v]scale=600x900[scaled2]; [2:v]scale=600x900[scaled3]; [scaled1][3:v]overlay[tmp1]; [scaled2][4:v]overlay[tmp2]; [scaled3][5:v]overlay[tmp3]; [tmp1][tmp2][tmp3]concat=n=3[scaled] "
  
  -map [scaled] -r 10 -vcodec libx264  -pix_fmt yuv420p -crf 23  "C:\Users\xxx\Documents\Projets\2020\xxx\video test ffmpeg\test.mp4"

• Picture size 0x0 is invalid : trying to downsample 4k raw video into 1080 using ffmpeg

  25 février 2021, par neetu sigger

  ffmpeg -i CityAlley_3840x2160_50fps_8bit.yuv -vf scale=1920:1080 CityAlly.yuv


  


  But I got the error :

  


  ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)
  configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
[IMGUTILS @ 0x7fffc0509b50] Picture size 0x0 is invalid
CityAlley_3840x2160_50fps_8bit.yuv: Invalid argument