video/gst-hlssink3-examples
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Encode decisions in code

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This commit is contained in:
Rafael Caricio 2021-10-13 13:13:16 +02:00
parent b865cfccb8
commit a040c29830
Signed by: rafaelcaricio
GPG key ID: 3C86DBCE8E93C947
1 changed files with 17 additions and 6 deletions
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23
hlssink3_server.py
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@ -1,6 +1,8 @@
import math
import sys
import traceback
import logging
from enum import Enum
from typing import Optional
import gi
@ -12,7 +14,12 @@ log = logging.getLogger('hls_server')
class FileHlsOrigin:
def __init__(self, filename: str) -> None:
def __init__(
self,
filename: str,
target_duration_secs: int = 6,
fps: float = 29.97,
) -> None:
if Gst.uri_is_valid(filename):
self.uri = filename
else:
@ -25,7 +32,6 @@ class FileHlsOrigin:
self.origin.connect("pad-added", self.on_origin_pad_added)
self.videoconvert = gst_element("videoconvert")
self.audioconvert = gst_element("audioconvert")
audio_encoder = gst_element("avenc_aac")
@ -37,13 +43,18 @@ class FileHlsOrigin:
video_encoder = gst_element("x264enc")
video_encoder.set_property("bitrate", 2100)
video_encoder.set_property("key-int-max", 180)
key_int_max = math.ceil(fps) * target_duration_secs
video_encoder.set_property("key-int-max", key_int_max)
log.debug(f"x264enc.key-int-max={key_int_max}")
video_encoder.set_property("speed-preset", "fast")
video_encoder.set_property("option-string", "min-keyint=179:scenecut=0")
video_encoder.set_property("option-string", "scenecut=0")
video_encoder.set_property("tune", "zerolatency")
video_encoder_capsfilter = gst_element("capsfilter")
video_encoder_capsfilter.props.caps = Gst.caps_from_string("video/x-h264,stream-format=avc,alignment=au,profile=main,framerate=(fraction)30000/1001")
video_encoder_capsfilter.props.caps = Gst.caps_from_string(
f"video/x-h264,stream-format=avc,alignment=au,profile=main")
h264parse = gst_element("h264parse")
@ -52,7 +63,7 @@ class FileHlsOrigin:
hlssink3 = gst_element("hlssink3", "hls")
hlssink3.set_property("location", "segment%05d.ts")
hlssink3.set_property("playlist-location", "master.m3u8")
hlssink3.set_property("target-duration", 6)
hlssink3.set_property("target-duration", target_duration_secs)
hlssink3.set_property("playlist-length", 15)
hlssink3.set_property("max-files", 16)