08 December 2022
almost 2 years ago by Encoding.com Product Team #2
SMPTE 436m and Teletext parameters
Added new mux mode for closed captions - 436m and teletext parameters.
Format support
SMPTE 436m mux mode and teletext parameters only available for mxf_op1a output format.
<?xml version="1.0"?>
<query>
<userid><<id>></userid> <!-- required-->
<userkey><<key>></userkey> <!-- required-->
<action>[Action]</action> <!-- required-->
<source>[SourceFile]</source> <!-- required-->
<format>
<output>mxf_op1a</output> <!-- required-->
<closed_captions>
<mux_type>436m</mux_type>
<page>[PageNumber]</page>
<!-- closed captions params -->
</closed_captions>
<!-- Multiple closed captions params may be included in output format -->
<closed_captions>
<!-- closed captions params -->
</closed_captions>
<teletext>
<vanc_line_1>[VANCLine1]</vanc_line_1>
<vanc_line_2>[VANCLine2]</vanc_line_2>
<vbi_line_1>[VBILine1]</vbi_line_1>
<vbi_line_2>[VBILine2]</vbi_line_2>
</teletext>
<!-- format params -->
</format></query>
{
"query": {
"userid": "<<id>>", // required
"userkey": "<<key>>", // required
"action": "[Action]", // required
"source": "[SourceFile]", // required
"format": {
"output": "mxf_op1a", // required
"closed_captions": [
{
"mux_type": "436m",
"page", "[PageNumber]"
// closed captions params
},
{
// closed captions params
}
],
"teletext": {
"vanc_line_1": "[VANCLine1]",
"vanc_line_2": "[VANCLine2]",
"vbi_line_1": "[VBILine1]",
"vbi_line_2": "[VBILine2]"
}
// format params
}
}
}
Parameter | Description | Allowed Values | Default Value |
---|---|---|---|
Closed Captions Params | |||
mux_type | Specify the closed captions mux type. | timed-text — Closed Captions would be muxed in video as 3GPP Timed Text track. cea-608 — Closed Captions would be muxed in video as cea-608 track. cea-708 — 608 closed captions would be up-converted to 708 closed captions. And both, cea-608 and cea-708 closed captions, would be muxed in video stream. webvtt — webvtt file would be uploaded to same destination as result file (for HLS it would be segmented). Not available for advanced_mss output format. burn-in – SRT video subtitle burn-in. ismt – Closed Captions would be muxed in video as ismt track. Available only for advanced_dash and advanced_mss output formats. 436m – SMPTE 436m muxed VBI data. | none |
page | Set ttxt page value | Positive integer number | none |
Teletext Parameters | |||
vanc_line_1 | VANC Line 1 value for teletext ancillary data | Positive integer number | 12 |
vanc_line_2 | VANC Line 2 value for teletext ancillary data | Positive integer number | 575 |
vbi_line_1 | VBI Line 1 value for teletext ancillary data | Positive integer number | 21 |
vbi_line_2 | VBI Line 2 value for teletext ancillary data | Positive integer number | 334 |