Showing posts with label ISO base media file format. Show all posts
Showing posts with label ISO base media file format. Show all posts

Friday, August 18, 2017

macOS Sierra: Burning a CD from Darik's Boot and Nuke iso File


$ sudo dd if=~/Downloads/dban-2.3.0_i586.iso of=/dev/disk6s2


32656+0 records in
32656+0 records out
16719872 bytes transferred in 30.549265 secs (547308 bytes/sec)

Saturday, September 17, 2016

FreeBSD: Downloading iso (Unified Extensible Firmware Interface, Bootonly) & Finding the Checksum (SHA256)

Command (Download):

$ wget


--2016-09-17 12:02:19--
           => ‘FreeBSD-10.3-RELEASE-amd64-uefi-bootonly.iso’
Resolving 2610:1c1:1:606c::15:0,
Connecting to|2610:1c1:1:606c::15:0|:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done.    ==> PWD ... done.
==> TYPE I ... done.  ==> CWD (1) /pub/FreeBSD/releases/amd64/amd64/ISO-IMAGES/10.3/ ... done.
==> SIZE FreeBSD-10.3-RELEASE-amd64-uefi-bootonly.iso ... 247324672
==> EPSV ... done.    ==> RETR FreeBSD-10.3-RELEASE-amd64-uefi-bootonly.iso ... done.
Length: 247324672 (236M) (unauthoritative)

FreeBSD-10.3-RELEASE-amd64-uefi-bootonly.iso                                               100%[========================================================================================================================================================================================================================================>] 235.87M   483KB/s    in 11m 5s

2016-09-17 12:13:27 (363 KB/s) - ‘FreeBSD-10.3-RELEASE-amd64-uefi-bootonly.iso’ saved [247324672]

Command (Finding the checksum):

$ curl | grep 'uefi-bootonly.iso)'


  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2392  100  2392    0     0    665      0  0:00:03  0:00:03 --:--:--   665
SHA256 (FreeBSD-10.3-RELEASE-amd64-uefi-bootonly.iso) = d9f1d52639821bbd818844f1899a5cf2a5601143ca76c095158405bf14719ebb

Tuesday, July 14, 2015

Flash video

  • Flash video is Digital container format
  • Flash Video may be embedded in SWF
  • SWF is acronym for Small Web Format
  • FLV and F4V are Flash Video
  • F4V is based on ISO base media file format
  • F4V started from Flash Player 9 update 3
  • FLV and F4V are supported in Adobe Flash Player
  • FLV was originally developed by Macromedia
  • Flash Video uses RTMP
  • RTMP is acronym for Real Time Messaging Protocol
  • RTMP is a Proprietary protocol
  • FLV may contain videos with different codecs
  • Codecs includes Sorenson Spark, VP6, H.264, HE-AAC
  • SWF supports video from Flash Player 6
  • Flash Player 7 added support for FLV
  • Flash Player does not check Filename extension
  • F4V is completely different from FLV
  • F4V does not support Screen video
  • F4V does not support Sorenson Spark
  • F4V does not support VP6 video compression format
  • F4V does not support ADPCM
  • F4V does not support Nellymoser audio compression format
  • F4V is strongly recommended by Authors of Flash Player
  • FLV has limitation when streaming H.264 or AAC
  • File suffix for Flash Video is .flv ?
  • Internet media type for FLV is video/x-flv ?
  • File suffix for F4V is .f4v ?
  • Internet media type for F4V is video/mp4 ?
  • SWF for Flash Player 6 or later can communicate with Adobe Flash Media Server
  • Adobe Flash Media uses RTMP
  • Flash Player can play FLV embedded in SWF created for Flash Player 7
  • Flash Player can play F4V embedded in SWF created for Flash Player 9
  • FLV contain Bitstream of variant of H.263
  • FLV uses Sorenson Spark
  • Sorenson Spark is a variant of H.263
  • Sorenson Spark is older Codec
  • Sorenson Spark is widely available and compatible
  • Sorenson Spark is the first Codec supported in Flash Player
  • Sorenson Spark is required Video coding format in Flash Player 6 and 7
  • On2 TrueMotion VP6 is supported in Flash Player 8 and newer
  • On2 TrueMotion VP6 is preferred in Flash Player 8 and newer
  • On2 TrueMotion VP6 has better quality than Sorenson Spark
  • On2 TrueMotion VP6 is computationally more complex than Sorenson Spark
  • Screen video is also called Screenshare
  • FLV supports two versions of Screenshare
  • Screenshare is an Codec for Screencast