Recherche avancée

Sur d’autres sites (10515)

• FFmpeg seems to be version conflict

  4 novembre 2014, par user3177342

  I am using git version of ffmpeg( renewed after old version succesful using) , when i try to compile my project i get

   /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:376: undefined reference to `swr_is_initialized'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:222: undefined reference to `swr_is_initialized'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_init_resample':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:163: undefined reference to `swr_init'
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:169: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_frame':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:236: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_flush_resample':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:117: undefined reference to `swr_convert'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_subpacket':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:408: undefined reference to `swr_close'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_flush':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:557: undefined reference to `swr_close'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_close':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:579: undefined reference to `swr_free'
  
  /usr/local/lib/libavcodec.a(opusdec.o): In function `opus_decode_init':
  
  /home/user/projects/ffmpleglast/ffmpeg/libavcodec/opusdec.c:629: undefined reference to `swr_alloc'

  Seems to be version conflict ? but how to delete wrong libs ? they seem to be todays build.

  ls -l /usr/local/lib
  
  -rw-r--r-- 1 root root  136509684 may   29 14:47 libavcodec.a
  
  -rw-r--r-- 1 root root    1853574 may   29 14:47 libavdevice.a
  
  -rw-r--r-- 1 root root    9689456 may   29 14:47 libavfilter.a
  
  -rw-r--r-- 1 root root   46282270 may   29 14:47 libavformat.a
  
  -rw-r--r-- 1 root root    2092250 may   29 14:47 libavutil.a
  
  -rw-r--r-- 1 root root      67942 may   12 11:29 libBasicUsageEnvironment.a
  
  -rw-r--r-- 1 root root    2200164 apr.  10 10:11 libfftw3.a
  
  -rwxr-xr-x 1 root root        872 apr.  10 10:11 libfftw3.la
  
  -rw-r--r-- 1 root root      94188 may   12 11:29 libgroupsock.a
  
  -rw-r--r-- 1 root root    2236084 may   12 11:29 libliveMedia.a
  
  -rw-r--r-- 1 root root     546506 may   29 14:47 libswresample.a
  
  -rw-r--r-- 1 root root    4813716 may   29 14:47 libswscale.a
  
  -rw-r--r-- 1 root root      14588 may   12 11:29 libUsageEnvironment.a

• Delay in video playback. Not able to identify the cause - AWS S3 region / ffmpeg / Videojs

  17 septembre 2016, par Himansu Kisan

  We are not able to identify the cause for random behavior while playing video on our website. (Sorry, cant share a link since the videos are for registered users only)
  The videos sometimes plays instantly and sometimes it takes over 1 minute to start. Not sure what we are doing wrong.

  We are using AWS S3 Oregon region (not the closest to target region, but it is cheaper) to store video files.
  The video files are encoded using ffmpeg. Below is the syntax

  ffmpeg -i input.mts -codec:v libx264 -threads 4 -movflags +faststart -profile:v high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale="trunc(oh*a/2)*2:720" "output.mp4"

  ffmpeg -i input.mts -codec:v libvpx -threads 4 -quality good -cpu-used 5 -b:v 500k -maxrate 500k -bufsize 1000k -qmin 10 -qmax 42 -vf scale="trunc(oh*a/2)*2:720" -codec:a libvorbis -b:a 128k "output.webm"

  On website, we are using Videojs 5.10.8.
  Below is the code snippet

   <video class="video-js vjs-default-skin vjs-big-play-centered" preload="none" controls="controls" poster="abcd.jpg" style="width:100%;height:100%;min-height:360px;" data-setup="{&quot;autoplay&quot;:true}">
  
  <source src="abcd.mp4" type="video/mp4"></source>
  
  <source src="adcd.webm" type="video/webm"></source>
  
  <p class="vjs-no-js">
  
      To view this video please enable JavaScript, and consider upgrading to a web browser
  
      that <a href="http://videojs.com/html5-video-support/" target="_blank">supports HTML5 video</a>
  
  </p>
  
  </video>

  What are we doing wrong ? Please help us out.

• lavc/libaribb24 : add error handling to region handling

  11 février 2019, par Jan Ekström

  lavc/libaribb24 : add error handling to region handling
  Fixes some rather embarrassing mistakes that somehow passed my
  
  eyes.
  * Now catches if memory allocation has failed during bprint usage
  
    by checking av_bprint_is_complete().
  
  * Now catches if adding an ASS rectangle into an AVSubtitle failed.
  
  * Returns AVERROR_INVALIDDATA if we get an invalid region buffer
  
    length.
  

  • [DH] libavcodec/libaribb24.c