Maintaining environment state between subprocess.Popen commands?

I'm writing a deployment engine for our system, where each project specifies his custom deployment instructions. The nodes are running on EC2. One of the projects depends on a from source version...

error is coming lib-faac-dev not found

i installed faac from here http://sourceforge.net/projects/faac/files/faac-src/faac-1.28/faac-1.28.tar.gz/ and then m running this command which is giving me this error basicall i want to install...

Error when builiding openCV with MacPorts

I'm trying to build openCV with MacPorts. I followed this procedure. Who can help me? Thanx. This is the output: ---> Computing dependencies for...

Unable to install opencv On Mac OSX 10.7.3 with XCode 4.2 using MacPort

I'm trying to install opencv using MacPort. i try: sudo port selfupdate sudo port install opencv and i retrieve: ---> Computing dependencies for opencv ---> Dependencies to be installed: dirac...

makeinfo package missing in ubuntu 12.04

Please can anybody give me a answer for this, I have already tried sudo apt-get install makeinfo textinfo texi2html but I still get the error "Unable to find the package."

How to write clean target?

First of all, I am not sure that what I am going to ask is my problem. Perhaps it is something else, so, please, don't hesitate to point that out. I think that the place I went wrong is the clean...

how to install ffmpeg via brew on mac os?

Is it possible to install ffmpeg via brew? brew install ffmpeg Warning: A newer Command Line Tools for Xcode release is available You should install the latest version from:...

Setting/Installing up OpenCV 2.4.6.1+ on Ubuntu 12.04.02

I had previously used OpenCV 2.4.5 with some certain configs and packages on Ubuntu 12.04.1 but had issues upgrading to OpenCV 2.4.6.1 on Ubuntu 12.04.2 I would like to share some ideas (a...

Problems compiling ffmpeg on windows using cygwin

I've been having a lot of trouble recently compiling ffmpeg on windows. I'm currently using the cgywin terminal to run the code. I've tried following many of the most popular tutorials on the web...

Transcoding rtmp to hls

I did this steps for transcoding my rtmp live streaming to hls on ubuntu 12.04: apt-get -y install build-essential checkinstall git libfaac-dev libgpac-dev libmp3lame-dev libopencore-amrnb-dev...

avcodec_find_decoder for FFMpeg 2.1 is not working with Android

I ported FFMpeg 2.1 to Android with NDK and I wrote a JNI function to initialize a video. Here is the code of this C function : JNIEXPORT int JNICALL Java_com_media_ffmpeg_FFMpeg_naInit(JNIEnv...

Ruby 2.1 and Nokogiri install error?

I know this is an issue that has been "solved" many times here, but I have tried all of the solutions and still can't get it to work. Here is my error: 22-01-14 17:57:56> gem install...

Unmet dependencies when installing OpenCV

I am on ubuntu 12.10 and I want to install OpenCV. I am following the tutorial on this website and when I try the second step, meaning sudo apt-get install build-essential checkinstall git cmake...

make: *** [ffmpeg_g] Error 1

hi i am trying to install ffmpeg . i choose to do it from source because i am using a vps server so i did these steps i am using git command for getting source from github after compiling i got...

how to fix Homebrew permissions? (extra tough case)

I'm trying to fix my permissions for OSX Homebrew, but I'm still getting Error: Permission denied - /usr/local/opt Here's what I've tried so far. I followed the instructions at...

On Centos Linux, how to install Python package 'readline' using pip?

Using the regular command sudo pip install readline I got an error Command "/usr/bin/python -c "import setuptools,...

Installing FFmpeg on Ubuntu 14.04 LTS fails on libvpx

This is the process I'm currently following: Install the Dependencies sudo apt-get remove ffmpeg x264 libx264-dev sudo apt-get update sudo apt-get install build-essential subversion git-core...

Use ffmpeg on OSX Xcode Project for Mac

I am planning to create a new app for personal use on my Mac that uses FFMPEG library, to store a feed from a RTSP IP camera. Following this official installation procedure from FFMPEG I have...

Updating ffmpeg on Ubuntu 12.04; conflicts with old version from standard repository

I have never used ffmpeg on my Ubuntu Linux 12.04 (Precise Pangolin) box until now. Typing 'ffmpeg' at the command prompt revealed that ffmpeg 0.8.17 (listed as ffmpeg...

Build FFmpeg for All Android architecture correctly

I built ffmpeg libraries for all android architecture. But some details are confusing my mind. First of all let me explain step by step how i built. I downloaded latest version of libx264...

Need help to compile FFmpeg with MSVC tools

I need to compile FFmpeg on Windows 10 using MSVC 2017 compiler. I followed some guides...

How to compile BlackMagic SDK to FFMPEG

In Mac OS 10.13 I have installed FFMPEG via brew install ffmpeg I have downloaded the latest BlackMagic SDK from BlackMagic websit. I am not sure how I can compile black magic SDK to my...

FFMPEG: Why aren't all my codecs showing up when I call av_codec_next()

I'm trying to make a custom build of ffmpeg to use in my c++ application. The only codecs I need are encode/decode for h264 and aac. Because I cannot use GPL code, I'm trying to use openh264. I...

Installing texi2html error: Can't unlink already-existing object

I've been searching quite a while now but couldn't find anything that helped me. I've tried everything stated in these...

building libav 12.3 using cygwin

I'm trying to build libav 12.3 from https://libav.org/download/ using cygwin on Windows 10. There is some documentation on the libav.org website:...

Failed building wheel for readline - when installing Rekall on OSX

When installing Rekal on OSX I do the following steps: virtualenv MyEnv source MyEnv/bin/activate pip install --upgrade setuptools pip wheel pip install rekall The installation fails with the...

During installation of LLVM and gold-plugin came across fatal error: cannot allocate memory

Doing my project of displaying clang-cfi mechanism. Therefore, the LLVM gold-plugin is needed. According to the description from a post, when I was doing the 6 step, after I typed make -j8 (here I...

Why does ffmpeg need DNS resolver as its dependencies?

I was installing FFmpeg and libav today using brew install ffmpeg libav when I noticed unbound in the dependencies list. It's very strange because unbound is DNS resolver and why ffmpeg would need...

Statically built FFMPEG binary segmentation fault

I want to create a custom build of FFMPEG which rips out everything except for the ability to transmux HLS videos to MP4, and I need this build to be 100% static with no external dependencies I...