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• Problem with Linking FFMPEG Libraries in Visual Studio on Windows 10 [closed]

  14 mars 2024, par Dentricky73

  I'm facing an issue while trying to link FFMPEG libraries in Visual Studio on a Windows 10 OS. Specifically, Visual Studio seems to locate the headers correctly, but encounters difficulties in finding the associated libraries. Initially, I attempted to compile the FFMPEG SDK myself, but encountered problems with the library extensions, which ended with a Linux .o file instead of a Windows .lib. Subsequently, I downloaded a prebuilt version from here, but I'm still encountering errors.

  


  In Visual Studio 2022, I've configured the following settings :

  


  


  Property > Configuration Properties > C/C++ > General > Additional Include Directories
C :\cmder\c++SDK\ffmpeg\include

  


  


  


  Property > Configuration Properties > Linker > General > Additional Library Directories
C :\cmder\c++SDK\ffmpeg\lib

  


  


  


  Property > Configuration Properties > Linker > Input > Additional Dependencies
avcodec.lib, avdevice.lib, avfilter.lib, avformat.lib, avutil.lib, postproc.lib, swresample.lib, swscale.lib

  


  


  Despite these configurations, Visual Studio fails to locate the FFMPEG libraries during the linking process. Could someone please provide guidance on how to resolve this issue and correctly link the FFMPEG libraries in Visual Studio on Windows ? Any help or insights would be greatly appreciated.

  


  Specific Issues Encountered :

  


  During the compilation and linking process in Visual Studio 2022, I encountered the following errors :

  


  Error 1 : A value of type "const AVCodec *" cannot be used to initialize an entity of type "AVCodec *".
Error 2 : Identifier "av_free_packet" is undefined.
Error 3 : Class "AVStream" has no member "codec".
Error 4 : Class "AVFrame" has no member "owner".
Despite configuring the project settings to include the correct include directories and library dependencies, these errors persist.

  


  Why Previous Attempts Didn't Meet My Needs :

  


  My previous attempts to resolve these issues were unsuccessful because I couldn't pinpoint the root cause of the compilation and linking errors. While I ensured that the include directories and library dependencies were correctly configured in Visual Studio, the errors persisted, indicating that there may be underlying issues with the setup or compatibility between the FFMPEG SDK and Visual Studio environment.

  


• Adding a background to an in-video visual progress bar with FFMPEG ?

  22 septembre 2023, par Alexei Dom

  Using the answer to Showing in-video visual progress bar with FFMPEG
  


  


  I'm trying to give the progress bar itself a background, so for e.g. the bar will be white and the red progress bar over time will cover it.

  


  My first decision was to apply a drawbox filter, so for my purposes the video is 1280 pixels wide and the duration is 6.027 seconds. I've tried

  


  ffmpeg -i uuid_nordvpn.mp4 -vf "color=c=red:s=1280x30[bar];[0][bar]overlay=-w+(w/6.072733)*t:H-h:shortest=1, drawbox=x=0:y=720-30:width=1280:height=30:thickness=fill:color=white" out.mp4

  


  But I got just the white drawbox filter that was drawn on top of the color filter.

  


  The obvious solution was to swap the color and drawbox filter, but that returns an error Too many inputs specified for the "color" filter, which I guess means you can only use the color filter at the beginning.

  


  I've also tried applying 2 color filters, the other color filter instead of filling up was going down, but you can't apply 2 color filters, again giving the reason Too many inputs specified for the "color" filter.

  


  I'm completely lost at this point, how would I give a background to this filter ?

  


• Visual Glitches When Decoding H.264 Using FFMPEG

  8 septembre 2023, par Ken Bassett

  I'm using ffmpeg to decode a video stream from a camera that uses H.264 codec, but I frequently get visual bugs like this one.

  


  

  


  This is my ffmpeg command. I am using python to start ffmpeg using subprocess and then reading the data from its stdout.

  


  ffmpeg -hide_banner -loglevel verbose -fflags nobuffer -flags low_delay -tune zerolatency -i rtsp://USERNAME:PASSWORD@IP_ADDRESS/live.sdp" -vf mpdecimate,setpts=N/FRAME_RATE/TB -an -pix_fmt bgr24 -f rawvideo -


  


  The camera has a constrained bitrate, but it is currently not getting close to the limit. I have tried removing several of the parameters in the ffmpeg call with no luck. Any help would be greatly appreciated !