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• FFMpeg call from kotlin invalid argument [closed]

  4 février 2024, par Moréo

  I'm trying to execute a ffmpeg command with a complex_filter in it, but i get a parsing error from ffmpeg every time

  


  [AVFilterGraph @ 0x602c5de06880] No option name near '4'
[AVFilterGraph @ 0x602c5de06880] Error parsing a filter description around: [v1][v2][v3][v4]; [v1]scale_vaapi=-2:1080[v1out]; [v2]scale_vaapi=-2:720[v2out]; [v3]scale_vaapi=-2:480[v3out]; [v4]scale_vaapi=-2:360[v4out]
[AVFilterGraph @ 0x602c5de06880] Error parsing filterchain '[0:v:0]split_vaapi=4[v1][v2][v3][v4]; [v1]scale_vaapi=-2:1080[v1out]; [v2]scale_vaapi=-2:720[v2out]; [v3]scale_vaapi=-2:480[v3out]; [v4]scale_vaapi=-2:360[v4out]' around: [v1][v2][v3][v4]; [v1]scale_vaapi=-2:1080[v1out]; [v2]scale_vaapi=-2:720[v2out]; [v3]scale_vaapi=-2:480[v3out]; [v4]scale_vaapi=-2:360[v4out]
Failed to set value '[0:v:0]split_vaapi=4[v1][v2][v3][v4]; [v1]scale_vaapi=-2:1080[v1out]; [v2]scale_vaapi=-2:720[v2out]; [v3]scale_vaapi=-2:480[v3out]; [v4]scale_vaapi=-2:360[v4out]' for option 'filter_complex': Invalid argument
Error parsing global options: Invalid argument


  


  Here is the filter build

  


  val splitsDef = "[0:v:0]split_vaapi=${splits.size}" + splits.joinToString("") { "[${it.name}]" }

val splitFilters = splits.joinToString("; ") { "[${it.name}]${it.filter}[${it.name}out]" }

val args = mutableListOf(..., "$splitsDef; $splitFilters")



  


  I've tried to add escaped quote to my complex definition, but i get another error from ffmpeg. However, when running the command in my terminal, It's working.

  


  I found this question quite answering what I'm trying to achieve, but not working either.

  


• checkasm : Remove unnecessary const on scalar parameters

  15 décembre 2023, par Martin Storsjö

  checkasm : Remove unnecessary const on scalar parameters
  The ffmpeg coding style doesn't usually use const on scalar
  
  parameters (or on the pointer values - as opposed to the type
  
  that is pointed to, where it has a semantic meaning), contrary
  
  to the dav1d coding style (where this was imported from).
  This avoids warnings about differences in the type signatures
  
  between declaration and definition of this function, with older
  
  versions of MSVC.
  The issue was observed with one version of MSVC 2017,
  
  19.16.27024.1, with warnings like these :
      src/tests/checkasm/checkasm.c(969) : warning C4028 : formal parameter 3 different from declaration
  The warning itself is bogus as the const here is harmless, and
  
  newer versions of MSVC no longer warn about this.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] tests/checkasm/checkasm.c
  • [DH] tests/checkasm/checkasm.h

• I recompile ffmpeg using nividia CUDA Toolkit inder to implement hardware acceleration.what is the reason of the compilation error [on hold]

  12 juillet 2017, par 秦先生

  I recompile ffmpeg in window 7 operation system using nividia CUDA Toolkit inder to implement encoder and decoder employ hardware acceleration.
  I use msys2 compile ffmpeg which Support nividia hardware acceleration,
  tried to follow the instruction on nvidias website.
  configured with ./configure —enable-nonfree —enable-nvenc —enable-cuda —enable-cuvid —ena ble-libnpp —extra-cflags=-Ilocal/include —extra-cflags=-I../include —extra-ld flags=-L../lib
  ,this is the error ,the log file ffbuild/config.log contain this error : this is the location of the previous definition
  gcc -L../lib -Wl,—nxcompat,—dynamicbase -Wl,—high-entropy-va -Wl,—as-needed -Wl,—image-base,0x140000000 -o /tmp/ffconf.eoLFY0Lt.exe /tmp/ffconf.Z00DOpJQ.o -lnppi -lnppc -lm -pthread -pthread -lpsapi -ladvapi32 -lshell32
  ../lib/nppc.lib(nppc64_80.dll.b) :(.text+0x2) : relocation truncated to fit : R_X86_64_32 against symbol `__imp_nppGetLibVersion’ defined in .idata$5 section in ../lib/nppc.lib(nppc64_80.dll.b)
  collect2 : error : ld returned 1 exit status
  ERROR : libnpp not found
  where common folder is from downloaded NVIDIA Video Codec SDK.
  My computer configuration : cpu:intel(R) core(TM) i3-4170 3.70HZ RAM 16GB operate system win7 64 bit

  I used software : ffmpeg 3.2.4 gcc 5.3.0