Technical notes

ffmpeg-2.2-patch ffmpeg-2.2 patch for relocation R_X86_64_PC32 against symbol error when compile in x64-bit Patch Link: Download: V1.0 Scope of Issue: When ffmpeg is built for static library and this compiled static library is linked with another dynamic library then the final linking failed with error -- ffmpeg/libavcodec/libavcodec.a(xx_yyyy.o): relocation R_X86_64_PC32 against symbol `ff_xx_yy_zz_qq' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Bad value collect2: ld returned 1 exit status Machine: x64-bit Linux, Unix, may be windows 64-bit How to fix: Use the ffmpeg-2.2.patch in your FFmpeg-n2.2 release source. How to apply patch: Copy the downloaded patch to your FFmpeg-n2.2 folder. Test the patch compatibility with your ffmpeg source by -- patch --dry-run -p1 -i ffmpeg-2.2.patch giving this command inside your ffmpeg source folder. If the test returns no fail patch file then you are ...

ISSUE: Build error on Asterik , when you want test webrtc feature :) checking for uuid_generate_random in -luuid... no checking for uuid_generate_random in -le2fs-uuid... no checking for uuid_generate_random... no configure: error: *** uuid support not found (this typically means the uuid development package is missing) Fix: This issue arises due to missing of UUID generator specified by rfc4122 . +Linux sudo apt-get install uuid-dev  @Unix yum -y install libuuid-devel Asterik comes with lots of helpful script available on - asterisk/contrib/scripts/ folder of your ASTERIK source. So just use the following command on UNIX console to run the asterik pre-requisite script. contrib/scripts/install_prereq install And you are done! configuring. Now -- Make Asterik.

Issue: When using mysql in centos and System got rebooted or restarted for some reason this issue arise. Solution: Just give the following command mv / var / lib / mysql / mysql . sock / var / lib / mysql / mysql . sock .old service mysqld start

Description: You have a Centos PC and trying to access the root user's Desktop from a Windows PC. You can see the shared folder in the \Network\Centos_PC_IP, but can't access the folder when you double click. The pop window arise with a error - You do not have permission to access in windows \\CENTOS_IP\\root. Contact your network administrator to request access.   Solution:   First you need to check you samba settings in your centos pc by command -   testparm   After that you need to do a little change o your /etc/samba/smb.conf file. Find the folder you shared from root in this file. It will be like -- [root] path = /root/Desktop read only = No Change it to - [root]   force user = root force group = root  path = /root/Desktop read only = No  And restart the samba by -- /sbin/service smb restart   And you are d...

ISSUE:   This issue arise when any user make a call to other lync user. In summary when there is a issue of INVITE message transaction.  WHY? 488 Not Acceptable Here   issue arise due to sdp misconstruction or for invalid sdp.  Sending: INVITE sip:demouser@yy.com SIP/2.0 Via: SIP/2.0/TLS x.x.x.x:33360;branch=18n2L9K88eMlGn7CcctT9RwKSB1FebW397VI5uG1 From: <sip:test@xx.local>;tag=1375467581;epid=13754675 To: <sip:demouser@yy.com> Call-ID: BHQjMXffBDJ3cWfS4CAvb2wTByEnCZT2xxb7jecK CSeq: 1 INVITE Contact: <sip:test@xx.local;opaque=user:epid:DbsgHp_PWlGCoMke5u6QsgAA;gruu> Content-Type: application/sdp Max-Forwards: 70 Supported: ms-dialog-route-set-update Supported: timer Supported: histinfo Supported: ms-safe-transfer Supported: ms-sender Supported: ms-early-media Supported: 100rel Supported: replaces Supported: ms-conf-invite Ms-keep-alive: UAC;hop-hop=yes Accept-Language: en-US P-Preferred-Identity: sip:test@xx.local Allo...