support HLS conversion of videos without audio (9e44c185) · Commits · certic / Jama

src/resources/helpers.py

+68 −61

Original line number	Diff line number	Diff line
		import shutil
		import exiftool
		import hashlib
		import json
		from django.core.files.base import File
		from jama import settings
		from resources import models
		@@ -182,12 +183,35 @@ def make_hls(f: Union[models.File, int], force: bool = False):
		or if conversion already exists, except if force is True.
		"""

		def has_audio(path):
		result = subprocess.run(
		[
		"ffprobe",
		"-v",
		"error",
		"-select_streams",
		"a",
		"-show_entries",
		"stream=index",
		"-of",
		"json",
		path,
		],
		capture_output=True,
		text=True,
		)
		streams = json.loads(result.stdout).get("streams", [])
		return len(streams) > 0

		if type(f) is int:
		f = models.File.objects.get(pk=f)
		if f.should_have_hls:
		hls_destination_dir = hls_destination_dir_from_hash(f.hash)
		if force or not os.path.exists(hls_destination_dir):
		os.makedirs(hls_destination_dir, exist_ok=True)

		audio_present = has_audio(f.local_path())

		ffmpeg_cmd = [
		"ffmpeg",
		"-y",
		@@ -196,91 +220,70 @@ def make_hls(f: Union[models.File, int], force: bool = False):
		"-filter_complex",
		(
		"[0:v]split=4[v1][v2][v3][v4];"
		"[v1]scale=1920:1080:force_original_aspect_ratio=decrease,pad=1920:1080:(ow-iw)/2:(oh-ih)/2:black[v1out];"
		"[v2]scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2:black[v2out];"
		"[v3]scale=854:480:force_original_aspect_ratio=decrease,pad=854:480:(ow-iw)/2:(oh-ih)/2:black[v3out];"
		"[v4]scale=426:240:force_original_aspect_ratio=decrease,pad=426:240:(ow-iw)/2:(oh-ih)/2:black[v4out]"
		"[v1]scale=1920:1080:force_original_aspect_ratio=decrease,"
		"pad=1920:1080:(ow-iw)/2:(oh-ih)/2:black[v1out];"
		"[v2]scale=1280:720:force_original_aspect_ratio=decrease,"
		"pad=1280:720:(ow-iw)/2:(oh-ih)/2:black[v2out];"
		"[v3]scale=854:480:force_original_aspect_ratio=decrease,"
		"pad=854:480:(ow-iw)/2:(oh-ih)/2:black[v3out];"
		"[v4]scale=426:240:force_original_aspect_ratio=decrease,"
		"pad=426:240:(ow-iw)/2:(oh-ih)/2:black[v4out]"
		),
		"-map",
		"[v1out]",
		"-c:v:0",
		"libx264",
		"-pix_fmt",
		"yuv420p",
		"-b:v:0",
		"5000k",
		"-maxrate:v:0",
		"5350k",
		"-bufsize:v:0",
		"7500k",
		"-map",
		"[v2out]",
		"-c:v:1",
		"libx264",
		"-pix_fmt",
		"yuv420p",
		"-b:v:1",
		"2800k",
		"-maxrate:v:1",
		"2996k",
		"-bufsize:v:1",
		"4200k",
		"-map",
		"[v3out]",
		"-c:v:2",
		"libx264",
		"-pix_fmt",
		"yuv420p",
		"-b:v:2",
		"1400k",
		"-maxrate:v:2",
		"1498k",
		"-bufsize:v:2",
		"2100k",
		"-map",
		"[v4out]",
		"-c:v:3",
		"libx264",
		"-pix_fmt",
		"yuv420p",
		"-b:v:3",
		"700k",
		"-maxrate:v:3",
		"749k",
		"-bufsize:v:3",
		"1050k",
		]

		if audio_present:
		ffmpeg_cmd += [
		"-map",
		"a:0",
		"-c:a:0",
		"aac",
		"-b:a:0",
		"192k",
		"-ac",
		"2",
		"-map",
		"a:0",
		"-c:a:1",
		"aac",
		"-b:a:1",
		"128k",
		"-ac",
		"2",
		"-map",
		"a:0",
		"-c:a:2",
		"aac",
		"-b:a:2",
		"96k",
		"-ac",
		"2",
		"-map",
		"a:0",
		"-c:a:3",
		"aac",
		"-b:a:3",
		"64k",
		"-ac",
		"2",
		]

		ffmpeg_cmd += [
		"-f",
		"hls",
		"-hls_time",
		@@ -296,7 +299,11 @@ def make_hls(f: Union[models.File, int], force: bool = False):
		"-master_pl_name",
		"master.m3u8",
		"-var_stream_map",
		"v:0,a:0 v:1,a:1 v:2,a:2 v:3,a:3",
		(
		"v:0,a:0 v:1,a:1 v:2,a:2 v:3,a:3"
		if audio_present
		else "v:0 v:1 v:2 v:3"
		),
		f"{hls_destination_dir}stream_%v{os.path.sep}playlist.m3u8",
		]