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• getruntime() exec() with double quotes in command

  29 décembre 2012, par brux

  I want to execute an ffmpeg command, the method I am using works with every command on my list except the following one which contains double quotes to set a filter (-vf) parameter

  ffmpeg -i 2012-12-27.mp4 -vf "movie=bb.png [movie]; [in] [movie] overlay=0:0 [out]" -vcodec libx264 -acodec copy out.mp4

  I have tried changing the quotes for single quotes with no luck. The command works at the android terminal with both single and double quotes.

  The app I'm developing uses about 5 ffmpeg commands, all work except this one, is this some bug ?

  I can't find a concrete solution to this problem, breaking the args into an array and then passing this to runtime().exec() as suggested elsewhere doesn't seem to work, or simply trying to escape the quotes with \" won't work.

  Both of the files referenced in the above command are located in the sdcard, I removed the concatenation of the command out so that things don't get messy, rest assured these commands work in a terminal when referencing the full paths to the files.
  I contatenate the string passed to getRuntime().exec() using a stringbuilder and`getexternalstorageDirectory().getabsolutepath() to get the path to each file like I have been doing with previous commands when using the process class.

  I am using Jelly Bean 4.2 in case that is of any significance.

• Upgrade ffmpeg (or rust) on OSX 10.12 cannot find make

  22 septembre 2020, par gemp

  Trying to brew upgrade ffmpeg on OSX 10.12 Sierra but when it arrived to install rust I had the following error :

  


  make: error: unable to find utility "make", not a developer tool or in PATH
xcodebuild: error: SDK "/Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk" cannot be located.
clang: error: unable to find utility "clang", not a developer tool or in PATH


  


  But which make gives /usr/bin/make and xcrun make is recognized and
  
ls -l /Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk gives
  
lrwxr-xr-x  1 root  wheel  10 Dec 21  2017 /Library/Developer/CommandLineTools/SDKs/MacOSX10.13.sdk -> MacOSX.sdk

  


  How can I force the rust install to use /usr/bin/make instead of the XTools one ? Or something else.

  


  EDIT

  


  I have rustc 1.46.0 which is the dependency that Homebrew wants ./configure --prefix=/usr/local/Cellar/rust/1.46.0 --release-channel=stable

  


• How do I edit the PKG_CONFIG_PATH environment variable on windows ?

  2 janvier 2024, par Project PowerPoint

  I'm trying to use pkg-config to combine files from ffmpeg into a library so I can use them as such in my program. However, I can't seem to figure out how to get pkg-config to look in another location.

  


  It's worth mentioning that I'm compiling this program into a node API addon for a node project, so I'm using pkg-config from NPM and CMake-js.

  


  Currently, pkg-config looks in C:/Strawberry/c/lib/pkgconfig

  


  I want it to look in C:/ffmpeg/lib/ as well.
I've tried looking for how to do this, but I can only find how to do it on linux.

  


  In the one stackoverflow question which is similar, the link provided is broken : link to question , broken link provided

  


  Otherwise, I find conflicting info saying pkg-config in windows doesn't consider PKG_CONFIG_PATH environment variable. I can't test this if I can't find out how to actually do it.

  


  I've also tried copying the ffmpeg folder inside C:/Strawberry/c/lib/pkgconfig so it can find it. Even then, it 'cant find libavcodec.pc' despite being located in that folder (albeit several folders deep).

  


  How do I change the environment variable for pkg-config ?