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• undefined reference to pl_log_create_341 whenever I try to compile ffmpeg and mpv under Arch Linux [closed]

  3 février 2024, par Mike Nguyen

  Ever since yesterday, I have been struggling to compile ffmpeg, and to a further extent, mpv, on Arch Linux due to the following error that is probably unique to my install :

  


  /usr/bin/ld: libavfilter/libavfilter.so: undefined reference to pl_log_create_341 collect2: error: ld returned 1 exit status make: *** [Makefile:133: ffplay_g] Error 1 make: *** Waiting for unfinished jobs.... /usr/bin/ld: libavfilter/libavfilter.so: undefined reference to pl_log_create_341'
collect2 : error : ld returned 1 exit status
make : *** [Makefile:133 : ffprobe_g] Error 1
/usr/bin/ld : libavfilter/libavfilter.so : undefined reference to pl_log_create_341' collect2: error: ld returned 1 exit status make: *** [Makefile:133: ffmpeg_g] Error 1

  


  I was trying to install mpd on my system, but pacman forced me to remove a ton of essential packages relating to multimedia, Qt, etc. I have since been able to reinstall most of these packages.

  


  However, my ffmpeg has been corrupted (as well as mpv failing to start) due to another error that apparently no one else has been getting (I have searched Google for this) :

  


  symbol lookup error: /usr/lib/libavfilter.so.9: undefined symbol: pl_tone_map_auto

  


  I have both libavfilter.so.9.12.100 and libavfilter.so.9.13.100 in my /usr/lib directory, and I am forced to run sudo ln -s /usr/lib/libavfilter.so.9.12.100 /usr/lib/libavfilter.so.9 every time I run pacman.

  


  I have spent countless hours browsing the web about what solutions are available, but as I said, I seem to be the only one getting these errors.

  


  Whether it's installing ffmpeg-git via the AUR, or removing and reinstalling mpv, nothing seems to fix the problem. And no one else is having this problem.

  


  I might be forced to do a clean install of Arch Linux, but I don't have the time for it.

  


• How to record browser animation to video, on Server/VPS

  11 novembre 2015, par Andy B

  I have one big question : How to record an animation that plays in the browser on a server/VPS ? We’re looking for a open/source or even proprietary solution.

  The use-case :

  We have an online project that generates animations and we want to record them on the server side.
  Practically it’s as simple as that, as opening a url(eg : https://greensock.com/gsap) in the browser and record the animation.

  On the local PC it works if we use ffmpeg, but we want to record the video on the server side, especially on a VPS without GUI.

  There are some solutions :

  1. Install a Lightweight GUI on the VPS, accesible through VNC

  Something like this :
  https://vpsboard.com/topic/2786-running-a-lightweight-gui-on-your-vps/

  Then create a cron job that will do the following :

  • open the browser with the correct url and play the animation
  • use ffmpeg to record the animation
  • save the video somewhere

  This solution allows a SINGLE execution thread at the same time and I don’t really like the setup.

  2. Use a fake X server

  Create/use a fake X server, tell the browser to run in there, tell ffmpeg to record that screen !?

  The question is : HOW ?

  3. Virtual Machines within the VPS

  The question is : HOW ?

  I would like to have the possibility to execute this job in a sort of container (be it docker or virtual machines within the VPS), having also the possibility to execute multiple jobs in parallel.

  Thank you all in advance !

• Configure ffmpeg to work with native client

  11 juin 2016, par Mohammad Abu Musa

  I followed the steps https://chromium.googlesource.com/webports/+/master to port ffmpeg to native client. I do not know what is the issue here. here are the configuration and here what I get

  NACL_ARCH=pnacl TOOLCHAIN=pnacl make ffmpeg

  Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\@anchor{ <-- HERE (?:[^\}]*)\}/ at /home/user/Desktop/webports/src/out/build/ffmpeg/ffmpeg-2.6.1/doc/texi2pod.pl line 387.
MAN doc/ffmpeg.1
MAN doc/ffprobe.1
MAN doc/ffmpeg-all.1
MAN doc/ffprobe-all.1
LD  ffmpeg_g
LD  ffprobe_g
/home/user/Desktop/webports/src/out/build/ffmpeg/ffmpeg-2.6.1/Makefile:124: recipe for target 'ffprobe_g' failed
make[1]: *** [ffprobe_g] Error 247
make[1]: *** Waiting for unfinished jobs....
/home/user/Desktop/webports/src/out/build/ffmpeg/ffmpeg-2.6.1/Makefile:124: recipe for target 'ffmpeg_g' failed
make[1]: *** [ffmpeg_g] Error 247
make[1]: Leaving directory '/home/user/Desktop/webports/src/out/build/ffmpeg/build_pnacl'
webports: Build failed: 'ffmpeg' [pnacl/release]
Makefile:89: recipe for target 'ffmpeg' failed
make: *** [ffmpeg] Error 1