08 December 2022

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
        }
    }
}
ParameterDescriptionAllowed ValuesDefault 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
pageSet ttxt page valuePositive integer numbernone
Teletext Parameters
vanc_line_1 VANC Line 1 value for teletext ancillary dataPositive integer number12
vanc_line_2 VANC Line 2 value for teletext ancillary dataPositive integer number575
vbi_line_1 VBI Line 1 value for teletext ancillary dataPositive integer number21
vbi_line_2 VBI Line 2 value for teletext ancillary dataPositive integer number334