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Cap AVC profile level at 4.1 in stream master playlist (#41592)

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* Cap AVC profile level at 4.1

* Use smaller multiplier in bandwidth calculation
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uvjustin 2020-10-16 04:37:27 +08:00 committed by GitHub
parent 6114006b8b
commit 9270585a44
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2 changed files with 5 additions and 3 deletions
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3
homeassistant/components/stream/fmp4utils.py
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@ -70,7 +70,8 @@ def get_codec_string(segment: io.BytesIO) -> str:
): ):
profile = stsd_box[111:112].hex() profile = stsd_box[111:112].hex()
compatibility = stsd_box[112:113].hex() compatibility = stsd_box[112:113].hex()
level = stsd_box[113:114].hex() # Cap level at 4.1 for compatibility with some Google Cast devices
level = hex(min(stsd_box[113], 41))[2:]
codec += "." + profile + compatibility + level codec += "." + profile + compatibility + level
# Handle H265 # Handle H265

5
homeassistant/components/stream/hls.py
View File

@ -32,10 +32,11 @@ class HlsMasterPlaylistView(StreamView):
def render(track): def render(track):
"""Render M3U8 file.""" """Render M3U8 file."""
# Need to calculate max bandwidth as input_container.bit_rate doesn't seem to work # Need to calculate max bandwidth as input_container.bit_rate doesn't seem to work
# Calculate file size / duration and use a multiplier to account for variation # Calculate file size / duration and use a small multiplier to account for variation
# hls spec already allows for 25% variation
segment = track.get_segment(track.segments[-1]) segment = track.get_segment(track.segments[-1])
bandwidth = round( bandwidth = round(
segment.segment.seek(0, io.SEEK_END) * 8 / segment.duration * 3 segment.segment.seek(0, io.SEEK_END) * 8 / segment.duration * 1.2
) )
codecs = get_codec_string(segment.segment) codecs = get_codec_string(segment.segment)
lines = [ lines = [