Profiles and Channels

One or more profiles are used for content fruition: those profiles represent the available quality for the content itself. Profiles are specific sets of channels used for content playback. Channels allow playback on different technologies and different qualities. Usually, all the profiles have the necessary channels for content playback on all kinds of devices. THRON presets are “Standard” and “HD” profiles; in addition, other custom profiles may exist, but it is advisable to contact our technical support for a discussion on the specific need.

Channels in turn represent the content through one or more bit rate; the presence of multiple bitrates allows the player to dynamically adjust the playback quality according to the actual situation (connection quality, bandwidth, device etc.), guaranteeing better performances and a much more better experience for the end users. This is the reason why dynamic streaming has the priority over progressive download when delivering content on browsers supporting such technology.

NOTE: Dynamic quality for video content is not available on IE prior to 11 or on Windows prior to 10.

 

Original file

For security reasons, the original file of each content is not managed by THRON CDN, it is only stored internally. Hence, its distribution is not accelerated by any application or web service.

 

Transcoding Channels

Below, for each content type and device you can find the list of default configurations.

The profile will be used in THRON to indicate all channels automatically enabled.

Each time a content is published in a profile, it will be transcoded on all the corresponding channels. It is important to know that if the profile is changed after the publication of some content, these may require a new transcoding in order to be played properly in the new profile. THRON implements a fallback mechanism for available channels according to the device in use: if the default channel for that specific device is not available, the player will automatically try to reproduce the content in the subsequent channel; if no channel can be reproduced the user will receive a predefined message (typically when the browser is obsolete i.e. Internet Explorer 7).

 

Video 

STANDARD PROFILE HD PROFILE
Download source: Specific channel for downloading source file without conversion (Dashboard only). Channel code: WEBORIGINAL Download source: Specific channel for downloading source file without conversion (Dashboard only). Channel code: WEBORIGINAL
Playback channel based on HTTP Live Streaming (HLS); Dynamic bitrate: 512 kbps, 800 kbps; Channel name: Streaming (HLS); Channel code: STREAMHTTPIOS Playback channel based on HTTP Live Streaming (HLS); Dynamic bitrate: 512 kbps, 800 kbps, 1200 kbps, 1600 kbps, 2000 kbps; Channel name: Streaming FullHD (HLS); Channel code: STREAMHTTPIOSHD
Playback channel based on Progressive Download; Single bitrate: 800 kbps; Channel name: Mp4 480p (h264); Channel code: WEB Playback channel based on High Definition Progressive Download; Single bitrate: 2000 kbps; Channel name: Mp4 720p (h264); Channel code: WEB

 

Additional channel for old mobile devices not supporting dynamic streaming:

 

Playback channel based on Progressive Download optimized for mobile devices; Single bitrate: 512 kbps; Compression format: H.264 with Base Line Profile 3.0; Channel name: Mp4 480p (h264); Channel code: WEBIPHONE Playback channel based on High Definition Progressive Download optimized for mobile devices; Single bitrate: 2000 kbps; Compression format: H.264 with High Line Profile 5.1; Channel name: Mp4 720p (h264); Channel code: WEBIPHONEHD

 

NOTE: For video content there is also a special channel which is not used by THRON player but is used by the semantic engine (INTELLIGENCE) in order to identify and suggest the proper tags for the TOPIC class. Channel code is WEBAUDIO and it consists in the extraction of the audio stream, converted into an mp3 file at 128 kbps.

 

Video resize schema

In order to guarantee the best tradeoff between quality and resolution the transcoding process resizes the video according to predefined levels, up to original file resolution (closest available resolution), maintaining the correct content’s aspect ratio. Predefined levels are:

  • 320px width
  • 640px width
  • 800px width
  • 960px width
  • 1280px width
  • 1920px width

NOTE: In any case, videos are never scaled to higher resolutions than the original one (no upscaling).

 

Available bitrates

According to content resolution, typical available bitrates are:

  • 320px width: 256 kbps
  • 640px width: between 256 and 400 kbps
  • 800px width: between 256 and 800 kbps
  • 960px width: between 256 and 1200 kbps
  • 1280px width: between 256 and 1600 kbps 
  • 1920px width: between 256 and 2000 kbps


As previously described, please remind that any change to clientID configuration involving the set of available bitrates requires a new transcoding of all the content previously uploaded. If different configurations are needed please contact our technical support.

 

Audio

STANDARD AND HD PROFILE
WEBORIGINAL: Specific channel for downloading source file without conversion (Dashboard only).
Playback channel based on Progressive Download; Single bitrate: 128 kbps; Compression format: mp3; Channel name: Mp3 (128Kbps 44100khz); Channel code: WEB

 

Image

For desktop browser and mobile devices (Android and iOS) the default configuration is:

STANDARD PROFILE HD PROFILE
Download source: Specific channel for downloading source file without conversion (Dashboard only). Channel code: WEBORIGINAL Download source: Specific channel for downloading source file without conversion (Dashboard only). Channel code: WEBORIGINAL
Playback channel based on Progressive Download; Output format: JPG; JPG quality: 90; Width: 1024px - Height: 0; Channel name: JPG/PNG (1024); Channel Code: WEB Playback channel based on Progressive Download; Output format: JPG; JPG quality: 90; Width: 1920px - Height: 0;Channel name: JPG/PNG (1920); Channel Code: WEBHD

Detailed information on color management and color profiles can be found in this article. 

 

Document

For desktop browser and mobile devices (Android and iOS) the default configuration is:

STANDARD AND HD PROFILE
Download source: Specific channel for downloading source file without conversion (Dashboard only). Channel code: WEB
Playback channel based on Progressive Download; Transcoding to PDF only for some document extensions; Channel name: PDF; Channel Code: WEBDOC

THRON performs the transcoding to PDF format (WebDoc channel) for the following file types:

Format

Extension

Text files

txt; xml (treated as plain text)

Microsoft Office Documents

doc; docx; docxm; ppt; pptx; pptxm; xls; xlsx; xlsxm

Open/Libre/Star Office Documents

odt; odf; odp; ods

PDF files

pdf

Postscript File / Encapsulated Postscript

ps; eps

Image files

bmp; jpg; jpeg; gif; png

NOTE:

  • In most cases document conversion offers results which are absolutely identical to the original file; however, converted document may differ from the original one when exclusive Microsoft features have been used (such as Wordarts, special transitions, charts in spreadsheets...).
    Documents with “macros” are currently not converted for security reasons.

  • Transcoding from spreadsheets (Excel files) to PDF provides that each sheet is scaled to fill a one-page PDF file (if possible); for this reason, the viewer may have to use high levels of zoom in order to display all data; if the package contains graphs, transcoding process does not guarantee their proper display.

  • In order to read documents through Internet Explorer 8 the following conditions need to be satisfied:

    • Adobe Acrobat Reader must be installed on your PC so that the pdf is navigable

    • Fullscreen is limited to the embed area (when content is used outside Dashboard)

    • Toolbar inside the embed area is present only if the content is attached to itself.

 

Summary Table 

 

CHANNEL NAME CHANNEL CODE
IMAGE
JPG/PNG (1024) WEB
Download source WEBORIGINAL
JPG/PNG (1920) WEBHD
AUDIO
Mp3 (128Kbps) WEB
VIDEO
Mp4 480p (h264 800kbps)  WEB
Mp4 720p (h264)  WEB HD
Mp4 480p (h264 512kbps)  WEBIPHONE
Audio track Mp3  WEBAUDIO
Streaming HLS  STREAMHTTPIOS
Streaming FullHD (h264)  STREAMHTTPIOSHD
Download source  WEBORIGINAL
DOCUMENT
Download source WEB
PDF WEBDOC
PAGE
HTML WEB
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