How do I find the length of media with gstreamer?
Question:
How do I find the playback time of media with gstreamer?
Answers:
Here’s a simple Python script to get the duration of anything gstreamer can decode. Note that all times in gstreamer are in nanoseconds.
duration.py:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import division
import sys
import gobject
gobject.threads_init()
import pygst
pygst.require("0.10")
import gst
d = gst.parse_launch("filesrc name=source ! decodebin2 ! fakesink")
source = d.get_by_name("source")
source.set_property("location", sys.argv[1])
d.set_state(gst.STATE_PLAYING)
d.get_state()
format = gst.Format(gst.FORMAT_TIME)
duration = d.query_duration(format)[0]
d.set_state(gst.STATE_NULL)
import datetime
delta = datetime.timedelta(seconds=(duration / gst.SECOND))
print delta
Examples:
$ python duration.py VIDEO_TS/VTS_03_1.VOB
0:20:10.528000
$ python duration.py ~/Movies/BigBuckBunny_640x360.m4v
0:09:56.461667
See Section 6.5.
http://majorsilence.com/pygtk_audio_and_video_playback_gstreamer
It avoids need to create a pipeline and run it manually.
Why re-invent the wheel?
Use:
gst-discoverer-1.0 filename
or
gst-discoverer-0.10 filename
Depending on the file type you may want to add ” | grep Duration” to avoid the tags which can be lengthy.
For the ridding of extraneous tags for video,flac and mp3 files this should do the trick by using grep to exclude them.
gst-discoverer-1.0 filename | grep -v Tags | grep -v ID3v2 | grep -v image | grep -v attachment
Adding on to the answer for gstreamer greater then 1.16.
Using GstPbutils and Discoverer we can query duration and other attributes as well. Full API here
import gi
gi.require_version("GstPbutils", "1.0")
from gi.repository import GstPbutils
def get_file_duration(file: Path) -> timedelta:
discoverer = GstPbutils.Discoverer()
asset_info = discoverer.discover_uri(str(file_path.as_uri()))
duration_in_microseconds = int(asset_info.get_duration() / 1000)
return timedelta(microseconds=duration_in_microseconds)
How do I find the playback time of media with gstreamer?
Here’s a simple Python script to get the duration of anything gstreamer can decode. Note that all times in gstreamer are in nanoseconds.
duration.py:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import division
import sys
import gobject
gobject.threads_init()
import pygst
pygst.require("0.10")
import gst
d = gst.parse_launch("filesrc name=source ! decodebin2 ! fakesink")
source = d.get_by_name("source")
source.set_property("location", sys.argv[1])
d.set_state(gst.STATE_PLAYING)
d.get_state()
format = gst.Format(gst.FORMAT_TIME)
duration = d.query_duration(format)[0]
d.set_state(gst.STATE_NULL)
import datetime
delta = datetime.timedelta(seconds=(duration / gst.SECOND))
print delta
Examples:
$ python duration.py VIDEO_TS/VTS_03_1.VOB
0:20:10.528000
$ python duration.py ~/Movies/BigBuckBunny_640x360.m4v
0:09:56.461667
See Section 6.5.
http://majorsilence.com/pygtk_audio_and_video_playback_gstreamer
It avoids need to create a pipeline and run it manually.
Why re-invent the wheel?
Use:
gst-discoverer-1.0 filename
or
gst-discoverer-0.10 filename
Depending on the file type you may want to add ” | grep Duration” to avoid the tags which can be lengthy.
For the ridding of extraneous tags for video,flac and mp3 files this should do the trick by using grep to exclude them.
gst-discoverer-1.0 filename | grep -v Tags | grep -v ID3v2 | grep -v image | grep -v attachment
Adding on to the answer for gstreamer greater then 1.16.
Using GstPbutils and Discoverer we can query duration and other attributes as well. Full API here
import gi
gi.require_version("GstPbutils", "1.0")
from gi.repository import GstPbutils
def get_file_duration(file: Path) -> timedelta:
discoverer = GstPbutils.Discoverer()
asset_info = discoverer.discover_uri(str(file_path.as_uri()))
duration_in_microseconds = int(asset_info.get_duration() / 1000)
return timedelta(microseconds=duration_in_microseconds)