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• Trying to open file with PHP-FFMpeg after it was encoded once

  19 mai 2016, par Shillo Ben David

  in the same PHP process I’m trying to open a file that was manipulated and saved, and then I’m trying to open it with as a new FFMpeg\Video. For example, in the same process :

  Open -> original.MOV
  
    Manipulate & save to -> new.mp4
  
      Open -> new.mp4

  However when I’m trying to open the manipulated file I get this InvalidArgumentException exception :

  InvalidArgumentException: Unable to detect file format, only audio and video supported

  It’s thrown by the FFMpeg::open() after it could not detect that it’s a either Video or Audio stream.

  FFMpeg::open()

  public function open($pathfile)
  
  {
  
      if (null === $streams = $this->ffprobe->streams($pathfile)) {
  
          throw new RuntimeException(sprintf('Unable to probe "%s".', $pathfile));
  
      }
  
  
  
      if (0 < count($streams->videos())) {
  
          return new Video($pathfile, $this->driver, $this->ffprobe);
  
      } elseif (0 < count($streams->audios())) {
  
          return new Audio($pathfile, $this->driver, $this->ffprobe);
  
      }
  
  
  
      throw new InvalidArgumentException('Unable to detect file format, only audio and video supported');
  
  }

  The filters I applied to the video are audio mute and speedup (setpts).

  So I wonder, why FFMpeg doesn’t recognise it as video ?

• hwcontext_vaapi : Try to support the VDPAU wrapper

  30 janvier 2017, par Mark Thompson

  hwcontext_vaapi : Try to support the VDPAU wrapper
  The driver is somewhat bitrotten (not updated for years) but is still
  
  usable for decoding with this change.  To support it, this adds a new
  
  driver quirk to indicate no support at all for surface attributes.
  Based on a patch by wm4 <nfxjfg@googlemail.com>.
  

  • [DBH] libavutil/hwcontext_vaapi.c
  • [DBH] libavutil/hwcontext_vaapi.h

• Big problems while compiling FFMPEG for iOS5

  7 juin 2013, par Vlad Bogdan

  I'm trying to compile the ffmpeg library for iOS5. I tried different options but none works.

  I downloaded this : https://github.com/ciphor/ffmpeg4ios .

  I tried the original build_armv7 but it didn't work. I edited the build_arm7 file and now it looks like this :

  #!/bin/tcsh -f
  
  
  
  if (! -d armv7) mkdir armv7
  
  if (! -d lib) mkdir lib
  
  
  
  rm armv7/*.a
  
  
  
  make clean
  
  
  
  ./configure --disable-network --disable-mpegaudio-hp --disable-lpc --disable-vaapi 
  
  --disable-vdpau --disable-hwaccels --disable-mmx --disable-mmx2 --disable-sse 
  
  --disable-ssse3 --disable-avx --disable-amd3dnow --disable-amd3dnowext --disable-vis 
  
  --disable-mmi --disable-doc --disable-yasm --disable-ffmpeg --disable-ffplay 
  
  --disable-ffprobe --disable-ffserver --disable-rdft --disable-dxva2 --disable-encoders 
  
  --disable-decoders --enable-decoder=h264 --disable-bsfs --disable-protocols 
  
  --disable-indevs --disable-outdevs --disable-devices --disable-filters --disable-demuxers --enable-demuxer=h264 
  
  --disable-muxers --disable-parsers --enable-parser=h264 --enable-cross-compile --arch=arm 
  
  --target-os=darwin 
  
  --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 --as='gas-preprocessor/gas-preprocessor.pl /Aplications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2' 
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk --cpu=cortex-a8 
  
  --extra-cflags='-pipe -Os -gdwarf-2 -issysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk -m${thumb_opt:-no-thumb} 
  
  -mthumb-interwork' --extra-ldflags='-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' --enable-pic
  
  
  
  
  
  make
  
  
  
  mv libavcodec/libavcodec.a armv7/
  
  mv libavdevice/libavdevice.a armv7/
  
  mv libavformat/libavformat.a armv7/
  
  mv libavutil/libavutil.a armv7/
  
  mv libswscale/libswscale.a armv7/
  
  
  
  rm lib/*.a
  
  
  
  cp armv7/*.a lib/

  But i get this error :

  /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2 is unable to create an executable file.
  C compiler test failed.

  I looked all over the Internet. I have read all the posts on stackoverflow about this but none helped me. Please tell me what i'm doing wrong and please don't post me links : trust me, i saw them all !