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• avcodec/mp3 : fix skipping zeros

  30 septembre 2015, par wm4

  avcodec/mp3 : fix skipping zeros
  Commits 43bc5cf9 and c5371f77 add code for skipping initial zeros in mp3
  
  packets. This code forgot to report to the user that data was skipped at
  
  all.
  Since audio codecs allow partial packet decoding, the user application
  
  has to rely on the return value. It will remove the data reported as
  
  consumed by the decoder, and feed it to the decoder again. This resulted
  
  in the mp3 frame after the zero region to be decoded over and over
  
  again, until the zero region was finally skipped by the application.
  Fix this by including the amount of skipped bytes to the number of
  
  consumed bytes returned by the decode call.
  Fixes trac ticket #4890.
  

  • [DH] libavcodec/mpegaudiodec_template.c

• nginx-rtmp video stream seeking functionality

  26 décembre 2020, par Priyansh Singh

  I am trying to make a video streaming service by using nginx-rtmp for reading stream and sending a dash/hls streaming media
Used this link for live streaming media

  


  I used obs for sending the stream to nginx
But it is a live stream and user cant seek the stream

  


  so, is there a way so that users cana actually seek it
Or is there a better way to stream video using dash/hls

  


• Documented ffmpeg commands not recognized by ffmpeg

  2 avril 2020, par agconti

  I'm trying to use options like, ldash and http_opts, as the dash muxer docs describe but FFmpeg doesn't recognize them. I'm on the latest released version of ffmpeg, v4.2.2. I see the changes in the ffmpeg master branch but not in the v4.2 release branch. Does ffmpeg not recognize them because they haven't been released yet ?

  



  Here's the dash muxer docs for reference : https://ffmpeg.org/ffmpeg-all.html#dash-2

  



  Here's a minimal example command with uncut output :

  



  Andrews-MacBook-Pro :: dev/test ‹master› » ffmpeg -re -i test.mp4 \                                   
-map 0 -map 0 -c:a libfdk_aac -c:v libx264 \
-b:v:0 800k -b:v:1 300k -s:v:1 320x170 -profile:v:1 baseline \
-profile:v:0 main -bf 1 \
-b_strategy 0 -ar:a:1 22050 \
-adaptation_sets "id=0,streams=v id=1,streams=a" \
-ldash 1 \
-f dash ./output/out.mpd

ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
  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
Unrecognized option 'ldash'.
Error splitting the argument list: Option not found