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• how to specify codec in m3u8 while creating segments using ffmpeg ?

  12 août 2019, par shubham vashisht

  I am using ffmpeg to create a HLS playlist using segment filter.

      result = subprocess.Popen(['ffmpeg -y -i {}  -acodec copy -f segment -segment_time {} -segment_list {}.m3u8 {}%03d.ts'.format(pathToDownloadedMediaFile, 10, mediaFileName,mediaFileName)],stdout=subprocess.PIPE,stderr=subprocess.STDOUT, shell=True)

  the generated file is :

  #EXTM3U
  
  #EXT-X-VERSION:3
  
  #EXT-X-MEDIA-SEQUENCE:0
  
  #EXT-X-ALLOW-CACHE:YES
  
  #EXT-X-TARGETDURATION:11
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128000.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128001.ts
  
  #EXTINF:9.984000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128002.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128003.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128004.ts
  
  #EXTINF:9.984000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128005.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128006.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128007.ts
  
  #EXTINF:9.984000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128008.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128009.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128010.ts
  
  #EXTINF:9.984000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128011.ts
  
  #EXTINF:10.008000,
  
  c1dcf7f6643551fc22b82978d31f746fc40ed69d-128012.ts
  
  #EXT-X-ENDLIST

  As you can see, in the EXTINF tag, there is no CODEC specified,

  it is required for using setAllowChunklessPreparation(true) in the exoplayer in Android for faster playback.

  does anyone have idea how can i set the codec while generating the m3u8 manifest.

• fate : Rework sgi tests into a suite and add the missing ones

  20 novembre 2015, par Vittorio Giovara

  fate : Rework sgi tests into a suite and add the missing ones
  Signed-off-by : Vittorio Giovara <vittorio.giovara@gmail.com>
  

  • [DBH] tests/fate/image.mak
  • [DBH] tests/ref/fate/sgi-gray16
  • [DBH] tests/ref/fate/sgi-gray16-rle
  • [DBH] tests/ref/fate/sgi-gray8
  • [DBH] tests/ref/fate/sgi-gray8-rle
  • [DBH] tests/ref/fate/sgi-rgba-rle
  • [DBH] tests/ref/fate/sgi-rgba64-rle

• FFmpeg bug with a image that has a #ededed color

  11 avril 2023, par Денис Выхрыстюк

  I want to generate a video from images. When the pictures have a gray(#ededed) background then a strange error occurs, but when with other colors everything is good.

  


  I will be grateful for any help.

  


  I run the following commands :

  


  ./ffmpeg.exe -s 1080x1080 -framerate 1 -i ./scene0_%6d.png -crf 1 -c:v rawvideo -pix_fmt yuv420p ./result.yuv


  


  ./ffmpeg.exe -s 1080x1080 -framerate 1 -i ./result.yuv -c:v libx264 -crf 15 -preset veryslow -pix_fmt yuv420p -maxrate 900M -bufsize 12000k ./final.mp4


  


  Result :

  


  Error: Option framerate not found


  


  FFmpeg version :

  


  ffmpeg version N-110165-g9a245bdf5d-20230403 Copyright (c) 2000-2023 the FFmpeg developersbuilt with gcc 12.2.0 (crosstool-NG 1.25.0.152_89671bf)configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-gpl --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --enable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --disable-libmfx --enable-libvpl --enable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20230403 libavutil 58. 5.100 / 58. 5.100 libavcodec 60. 9.100 / 60. 9.100 libavformat 60. 4.101 / 60. 4.101 libavdevice 60. 2.100 / 60. 2.100 libavfilter 9. 5.100 / 9. 5.100 libswscale 7. 2.100 / 7. 2.100 libswresample 4. 11.100 / 4. 11.100libpostproc 57. 2.100 / 57. 2.100


  


  

  


  I tried other colors and everything is fine. I expect that I will be able to combine the gray images to the video and that the desired color profile will be finded