Recently  I was assigned to a task about adding a file upload feature to a existing nginx server on CentOS. Nginx was chosen years ago because it simply handles some static files only. If the file upload was a requirement, using apache is simpler as computation power isn’t a constraint in our case. Background CentOS 7 nginx 1.10.2 nginx-upload-module ngx_http_auth_pam_module Compile Dynamic modules Download upload and auth pam module source code. Then find out the current nginx version, download the source code and compile modules ## download module source code $ wget https://github.com/sto/ngx_http_auth_pam_module/archive/master.zip -O ngx_http_auth_pam_module.zip $ unzip ngx_http_auth_pam_module.zip $ mv ngx_http_auth_pam_module-master ngx_http_auth_pam_module $ wget https://github.com/vkholodkov/nginx-upload-module/archive/master.zip -O nginx-upload-module.zip $ upzip nginx-upload-module.zip $ mv nginx-upload-module-master nginx-upload-module ## modify the “config” file to support dynamic module, ## see https://github.com/vkholodkov/nginx-upload-module/issues/78 ## install compile dependencies $ sudo yum -y install pcre-devel zlib-devel pam-devel libxslt-devel perl-ExtUtils-Embed GeoIP-devel \ redhat-rpm-config openssl-devel gd-devel gperftools-devel gcc-c++ ## find out the current version of nginx $ nginx -v ## download source code $ wget http://nginx.org/download/nginx-1.10.2.tar.gz ## list all compile parameters $ nginx -V ## e.g. configure arguments: –prefix=/usr/share/nginx –sbin-path=/usr/sbin/nginx –modules-path=/usr/lib64/nginx/modules –conf-path=/etc/nginx/nginx.conf –error-log-path=/var/log/nginx/error.log –http-log-path=/var/log/nginx/access.log –http-client-body-temp-path=/var/lib/nginx/tmp/client_body –http-proxy-temp-path=/var/lib/nginx/tmp/proxy –http-fastcgi-temp-path=/var/lib/nginx/tmp/fastcgi –http-uwsgi-temp-path=/var/lib/nginx/tmp/uwsgi –http-scgi-temp-path=/var/lib/nginx/tmp/scgi –pid-path=/run/nginx.pid –lock-path=/run/lock/subsys/nginx –user=nginx –group=nginx –with-file-aio –with-ipv6 –with-http_ssl_module –with-http_v2_module –with-http_realip_module –with-http_addition_module –with-http_xslt_module=dynamic –with-http_image_filter_module=dynamic –with-http_geoip_module=dynamic –with-http_sub_module –with-http_dav_module –with-http_flv_module –with-http_mp4_module –with-http_gunzip_module –with-http_gzip_static_module –with-http_random_index_module –with-http_secure_link_module –with-http_degradation_module –with-http_slice_module –with-http_stub_status_module –with-http_perl_module=dynamic –with-mail=dynamic –with-mail_ssl_module –with-pcre –with-pcre-jit –with-stream=dynamic –with-stream_ssl_module –with-google_perftools_module –with-debug –with-cc-opt=’-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong –param=ssp-buffer-size=4 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic’ –with-ld-opt=’-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -Wl,-E’ ## reuse the configs output from “nginx -V”, now compile http auth pam module $ tar …

今個Xmas 假期找到原因了, 原來係touch input 既問題. 宜家Streaming DLNA 唔使睇睇下冇聲 (input source switching automatically) http://www.avsforum.com/forum/109-home-theater-box/1481206-help-samsung-ht-e5500-keeps-changing-source-2.html#post23923247

I have a Samsung smart TV, it can play AAC video format, but only with mp4 container, mkv file format is NOT supported. Here is a simple way to convert them. materials: synology linux 1. create NFS share on Synology Shared Folder > Edit > NFS Permission hostname/IP: 192.168.x.0/24   (allow whole subnet) then press “OK” 2. mount NFS from mint install nfs client and converter on Mint sudo apt-get update sudo apt-get install nfs-common rpcbind libav-tools mount [Synology NAS IP address] : [mount path of shared folder] / [mount point on NFS client] sudo mount diskstation:/volume2/data /mnt/dsdata 3. convert file avconv -i input.mkv -c:v copy -c:a copy output.mp4 # batch convert find /path -name ‘*.mkv’ -not -path “*/@eaDir/*” -exec bash -c ‘avconv -i “$1” -c:v copy -c:a copy “${1%.mkv}.mp4″‘ _ {} \; if your linux distro support ffmpeg other than avconv (libav-tools), use ffmpeg -i input.mkv -codec copy output.mp4 reference: https://www.synology.com/en-global/knowledgebase/DSM/tutorial/File_Sharing/How_to_access_files_on_Synology_NAS_within_the_local_network_NFS http://askubuntu.com/questions/50433/how-to-convert-mkv-file-into-mp4-file-losslessly