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• ffmpeg.a : No such file or directory while running ccViewer iOS Swift [closed]

  22 janvier 2023, par Sarwat

  I am running a build which is available in in GitHub (https://github.com/lithium0003/ccViewer/tree/v1.4.3) to connect direct storages through RCLONE (Google Drive, OneDrive etc.)

  


  I am following steps to compile which provided GitHub ccViewer readme
how to compile :

  


  if you did not set up, run these commands.

  


  sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer/
brew install nasm
brew install yasm
prepare depencency

./chromecast.sh
cd work
./clone.sh
./build.sh
open with Xcode and compile

open workspace "ccViewer.xcworkspace"
select scheme "CryptCloudViewer" and build


  


  but I am getting ffmpeg.a not found. Please check attached images of Xcode and Command prompt.

  


  error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: lib/*.a (No such file or directory)
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: lib/*.a (No such file or directory)
error: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't open file: lib/*.a (No such file or directory)
cp: ../output/ios/include/*: No such file or directory
cp: ../output/ios/ffmpeg.a: No such file or directory
cp: ../output/simulator/include/*: No such file or directory
cp: ../output/simulator/ffmpeg.a: No such file or directory
cp: ../output/macos/include/*: No such file or directory
cp: ../output/macos/ffmpeg.a: No such file or directory


  


  

  


• Error while build ffmpeg for iOS

  30 avril 2014, par AntonD

  I’m trying to build fmmpeg for iOS with the following config :

  ./configure --prefix=build/armv7 --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avutil --enable-avresample --enable-cross-compile --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk" --target-os=darwin --cc=gcc  --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=6.0" --extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk -miphoneos-version-min=6.0" --arch=arm --cpu=cortex-a9 --enable-pic

  when i try to make it i’m receiving the follow error :

  AS  libavcodec/arm/vc1dsp_neon.o
libavcodec/arm/vc1dsp_neon.S:751:10: error: unexpected token in argument list
 ra .dn d28.i8
        ^
libavcodec/arm/vc1dsp_neon.S:752:10: error: unexpected token in argument list
 rb .dn d29.i8
        ^
libavcodec/arm/vc1dsp_neon.S:753:10: error: unexpected token in argument list
 rc .dn d30.i8
        ^
libavcodec/arm/vc1dsp_neon.S:754:10: error: unexpected token in argument list
 rd .dn d31.i8
        ^
libavcodec/arm/vc1dsp_neon.S:757:14: error: invalid operand for instruction
       vmov ra, #4
            ^
libavcodec/arm/vc1dsp_neon.S:758:14: error: invalid operand for instruction
       vmov rb, #53
            ^
libavcodec/arm/vc1dsp_neon.S:759:14: error: invalid operand for instruction
       vmov rc, #18
            ^
libavcodec/arm/vc1dsp_neon.S:760:14: error: invalid operand for instruction
       vmov rd, #3
            ^
libavcodec/arm/vc1dsp_neon.S:864:10: error: unexpected token in argument list
 ra .dn d28.i16
        ^
libavcodec/arm/vc1dsp_neon.S:865:10: error: unexpected token in argument list
 rb .dn d29.i16
        ^

  what could be the error ?

• HTML 5 currentTime accuracy

  1er septembre 2015, par Daniel

  I’m working on a project where we are using the value from the video element’s currentTime property to perform processing on the server backend using ffmpeg. I’ve come across an issue where the video element seems to report a time code that is slightly different from the time code ffmpeg needs to access the correct point in the video.

  So for instance in Firefox if the currentTime property reports that the current video time is 26.83 I might find that the frame I really want ended at 26.72 and so if I use the time to extract a frame using ffmpeg on the server I get the next frame instead of the current frame.

  The amount of offset seems to be slightly different in different parts of the video and in different videos. But the offset is usually close to one tenth of a second in Firefox. In chrome the currentTime actually seems to be ahead or the correct currentTime by about 5 hundredths of a second. It’s more difficult to figure out the offset in IE because the place where the frame shifts seems to change as I enter different time codes to look for the exact time code where the frame changes.

  I’m pretty sure the time as used by ffmpeg is the correct time. It seems to agree more closely with other video editing software such as adobe premier.

  Any ideas on what could be causing this behavior ?

  JS to get currentTime :

  AVideo.prototype.getCurrentTime = function()
  
  {
  
     return this.videoElement[0].currentTime;
  
  };

  Resulting ffmpeg command :

  ffmpeg -y -i '/tmp/myVideo.mov' -vframes 1 -ss 2.4871 -f image2   -y '/tmp/myFrame.jpg' 2>&1