h264ccinserter

Extracts closed caption metas from buffer and inserts them as SEI messages.

For a more generic element that also supports unregistered SEI messages, see h264seiinserter.

Example launch line

gst-launch-1.0.exe filesrc location=video.mp4 ! parsebin name=p ! h264parse ! \
  queue ! cccombiner name=c ! \
  h264ccinserter remove-caption-meta=true caption-meta-order=display ! \
  h264parse ! avdec_h264 ! videoconvert ! cea608overlay ! queue ! autovideosink \
  filesrc location=caption.mcc ! mccparse ! ccconverter ! \
  closedcaption/x-cea-708,format=(string)cc_data ! queue ! c.caption

Above pipeline inserts closed caption data to already encoded H.264 stream and renders. Because mccparse outputs caption data in display order, "caption-meta-order=display" property is required in this example.

Hierarchy

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstElement
                ╰──GstCodecSEIInserter
                    ╰──GstH264CCInserter

Factory details

Authors: – Seungha Yang

Classification: – Codec/Video/Filter

Rank – none

Plugin – closedcaption

Package – GStreamer Bad Plug-ins

Pad Templates

`sink`

video/x-h264:
      alignment: au

Presence – always

Direction – sink

Object type – GstPad

`src`

video/x-h264:
      alignment: au

Presence – always

Direction – src

Object type – GstPad

Properties

do-timestamp

“do-timestamp” gboolean

Recalculate DTS based on input PTS and output frame order.

When enabled, the element ignores any DTS values present on incoming frames and always derives new DTS values from the input PTS and the actual output (decode) order of frames.

Flags : Read / Write

Default value : false

Since : 1.30

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