 |
GStreamer Video Exporter
|
|
GStreamer Video Exporter
|
Exports video frames into a video file with gstreamer.
| Name | Default Value | Type | Description |
|---|---|---|---|
| muxer | matroskamux | string | The muxer used for creating the output file, this defines the container format,i.e. "matroskamux" or "avimux" (see AVI Output). |
| relative_pts | false | string | When set, a reference timestamp (first encountered timestamp) will be substracted from each timestamp. |
| timestamp_file_name | string | When set, the exporter will create a CSV file at the given location, where each linecontains both the chunk and sample timestamps for a video frame (seperated by ','). Timestamps are nanoseconds since the UNIX epoch (UTC). | |
| transform | string | The gstreamer video encoding pipeline. Leave empty for no video encoding/transformation.Use the gst-launch syntax, see Video Encoding. |
Exports video frames into a video file with gstreamer and creates an accompaningMDF file that references the frames in the video file. This uses the same transform and muxer propertiesas the gstreamer_video exporter, but with defaults to create AVI files.
| Name | Default Value | Type | Description |
|---|---|---|---|
| filextension | avi | string | The file extension used for the video file. The video file will have the same basename as the MDFoutput file but with this extension. i.e. <mdf_file>.<extension>. |
| mimetype | video/x-msvideo | string | The mime type of the video file stored within the MDF file. i.e. "video/x-msvideo" or "video/x-matroska" |
| muxer | avimux | string | The muxer used for creating the output file, this defines the container format,i.e. "matroskamux" or "avimux" (see AVI Output). |
| relative_pts | false | string | When set, a reference timestamp (first encountered timestamp) will be substracted from each timestamp. |
| timestamp_file_name | string | When set, the exporter will create a CSV file at the given location, where each linecontains both the chunk and sample timestamps for a video frame (seperated by ','). Timestamps are nanoseconds since the UNIX epoch (UTC). | |
| transform | capssetter caps=video/x-raw,framerate=25/1;video/x-h264,framerate=25/1;image/jpeg,framerate=25/1 | string | The gstreamer video encoding pipeline. Leave empty for no video encoding/transformation.Use the gst-launch syntax, see Video Encoding. |
| Attribute | Value |
|---|---|
| Plugin Name | gstreamer_video_exporter.adtffileplugin |
| License | ADTF Subscription |
| Support Mail | suppo.nosp@m.rt@d.nosp@m.igita.nosp@m.lwer.nosp@m.k.net |
| Homepage URL | https://adtf.dev/ |
You can use the processor for:
ADTF DAT Tool (available within ADTF File Library or redeployed in ADTF)ADTF itself using ADTF File Plugin ProcessorYou can use the transform property to specify any gstreamer pipeline that will sit between the source and the muxer. Note that the gstreamer setup within the property is set within quotation marks, like:
See the examples below:
The exporter supports the adtf/gstreamer stream type from the ADTF GStreamer Toolbox so you can pass along compressed video streams to a muxer to store them directly in a video container (i.e. mkv or avi).
In order for the muxer to support encoded h264 streams in the byte-stream stream format you need to use a h264parse element and specify the avc stream format:
AVI files require a constant framerate, which ADTF video streams are not required to provide. Thus to make the AVI muxer accept the video streams, a videorate element is required. See the following example:
Adjust the framerate property accordingly.
Some video streams may have no or invalid format specifications. You can use the capssetter element to redefine it to what ever format you like:
or