Ryan Malloy
91139264fd
Phase 3 Implementation: Advanced Adaptive Streaming • Built AdaptiveStreamProcessor that leverages existing VideoProcessor infrastructure • AI-optimized bitrate ladder generation using content analysis with intelligent fallbacks • Comprehensive HLS playlist generation with segmentation and live streaming support • Complete DASH manifest generation with XML structure and live streaming capabilities • Integrated seamlessly with Phase 1 (AI analysis) and Phase 2 (advanced codecs) • Created 15 comprehensive tests covering all streaming functionality - all passing • Built demonstration script showcasing adaptive streaming, custom bitrate ladders, and deployment Key Features: - Multi-bitrate adaptive streaming with HLS & DASH support - AI-powered content analysis for optimized bitrate selection - Live streaming capabilities with RTMP input support - CDN-ready streaming packages with proper manifest generation - Thumbnail track generation for video scrubbing - Hardware acceleration support and codec-specific optimizations - Production deployment considerations and integration guidance Technical Architecture: - BitrateLevel dataclass for streaming configuration - StreamingPackage for complete adaptive stream management - HLSGenerator & DASHGenerator for format-specific manifest creation - Async/concurrent processing for optimal performance - Graceful degradation when AI dependencies unavailable 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
299 lines
12 KiB
Python
299 lines
12 KiB
Python
"""Tests for adaptive streaming functionality."""
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import pytest
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from pathlib import Path
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from unittest.mock import Mock, patch, AsyncMock
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from video_processor.config import ProcessorConfig
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from video_processor.streaming.adaptive import (
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AdaptiveStreamProcessor,
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BitrateLevel,
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StreamingPackage
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)
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class TestBitrateLevel:
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"""Test BitrateLevel dataclass."""
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def test_bitrate_level_creation(self):
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"""Test BitrateLevel creation."""
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level = BitrateLevel(
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name="720p",
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width=1280,
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height=720,
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bitrate=3000,
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max_bitrate=4500,
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codec="h264",
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container="mp4"
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)
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assert level.name == "720p"
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assert level.width == 1280
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assert level.height == 720
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assert level.bitrate == 3000
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assert level.max_bitrate == 4500
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assert level.codec == "h264"
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assert level.container == "mp4"
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class TestStreamingPackage:
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"""Test StreamingPackage dataclass."""
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def test_streaming_package_creation(self):
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"""Test StreamingPackage creation."""
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package = StreamingPackage(
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video_id="test_video",
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source_path=Path("input.mp4"),
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output_dir=Path("/output"),
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segment_duration=6
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)
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assert package.video_id == "test_video"
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assert package.source_path == Path("input.mp4")
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assert package.output_dir == Path("/output")
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assert package.segment_duration == 6
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assert package.hls_playlist is None
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assert package.dash_manifest is None
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class TestAdaptiveStreamProcessor:
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"""Test adaptive stream processor functionality."""
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def test_initialization(self):
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"""Test processor initialization."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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assert processor.config == config
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assert processor.enable_ai_optimization in [True, False] # Depends on AI availability
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def test_initialization_with_ai_disabled(self):
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"""Test processor initialization with AI disabled."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config, enable_ai_optimization=False)
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assert processor.enable_ai_optimization is False
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assert processor.content_analyzer is None
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def test_get_streaming_capabilities(self):
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"""Test streaming capabilities reporting."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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capabilities = processor.get_streaming_capabilities()
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assert isinstance(capabilities, dict)
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assert "hls_streaming" in capabilities
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assert "dash_streaming" in capabilities
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assert "ai_optimization" in capabilities
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assert "advanced_codecs" in capabilities
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assert "thumbnail_tracks" in capabilities
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assert "multi_bitrate" in capabilities
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def test_get_output_format_mapping(self):
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"""Test codec to output format mapping."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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assert processor._get_output_format("h264") == "mp4"
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assert processor._get_output_format("hevc") == "hevc"
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assert processor._get_output_format("av1") == "av1_mp4"
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assert processor._get_output_format("unknown") == "mp4"
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def test_get_quality_preset_for_bitrate(self):
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"""Test quality preset selection based on bitrate."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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assert processor._get_quality_preset_for_bitrate(500) == "low"
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assert processor._get_quality_preset_for_bitrate(2000) == "medium"
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assert processor._get_quality_preset_for_bitrate(5000) == "high"
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assert processor._get_quality_preset_for_bitrate(10000) == "ultra"
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def test_get_ffmpeg_options_for_level(self):
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"""Test FFmpeg options generation for bitrate levels."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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level = BitrateLevel(
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name="720p", width=1280, height=720,
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bitrate=3000, max_bitrate=4500,
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codec="h264", container="mp4"
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)
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options = processor._get_ffmpeg_options_for_level(level)
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assert options["b:v"] == "3000k"
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assert options["maxrate"] == "4500k"
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assert options["bufsize"] == "9000k"
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assert options["s"] == "1280x720"
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@pytest.mark.asyncio
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async def test_generate_optimal_bitrate_ladder_without_ai(self):
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"""Test bitrate ladder generation without AI analysis."""
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config, enable_ai_optimization=False)
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levels = await processor._generate_optimal_bitrate_ladder(Path("test.mp4"))
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assert isinstance(levels, list)
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assert len(levels) >= 1
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assert all(isinstance(level, BitrateLevel) for level in levels)
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@pytest.mark.asyncio
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@patch('video_processor.streaming.adaptive.VideoContentAnalyzer')
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async def test_generate_optimal_bitrate_ladder_with_ai(self, mock_analyzer_class):
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"""Test bitrate ladder generation with AI analysis."""
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# Mock AI analyzer
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mock_analyzer = Mock()
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mock_analysis = Mock()
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mock_analysis.resolution = (1920, 1080)
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mock_analysis.motion_intensity = 0.8
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mock_analyzer.analyze_content = AsyncMock(return_value=mock_analysis)
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mock_analyzer_class.return_value = mock_analyzer
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config, enable_ai_optimization=True)
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processor.content_analyzer = mock_analyzer
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levels = await processor._generate_optimal_bitrate_ladder(Path("test.mp4"))
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assert isinstance(levels, list)
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assert len(levels) >= 1
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# Check that bitrates were adjusted for high motion
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for level in levels:
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assert level.bitrate > 0
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assert level.max_bitrate > level.bitrate
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@pytest.mark.asyncio
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@patch('video_processor.streaming.adaptive.VideoProcessor')
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@patch('video_processor.streaming.adaptive.asyncio.to_thread')
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async def test_generate_bitrate_renditions(self, mock_to_thread, mock_processor_class):
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"""Test bitrate rendition generation."""
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# Mock VideoProcessor
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mock_result = Mock()
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mock_result.encoded_files = {"mp4": Path("/output/test.mp4")}
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mock_processor_instance = Mock()
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mock_processor_instance.process_video.return_value = mock_result
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mock_processor_class.return_value = mock_processor_instance
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mock_to_thread.return_value = mock_result
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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bitrate_levels = [
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BitrateLevel("480p", 854, 480, 1500, 2250, "h264", "mp4"),
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BitrateLevel("720p", 1280, 720, 3000, 4500, "h264", "mp4"),
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]
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with patch('pathlib.Path.mkdir'):
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rendition_files = await processor._generate_bitrate_renditions(
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Path("input.mp4"), Path("/output"), "test_video", bitrate_levels
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)
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assert isinstance(rendition_files, dict)
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assert len(rendition_files) == 2
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assert "480p" in rendition_files
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assert "720p" in rendition_files
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@pytest.mark.asyncio
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@patch('video_processor.streaming.adaptive.asyncio.to_thread')
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async def test_generate_thumbnail_track(self, mock_to_thread):
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"""Test thumbnail track generation."""
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# Mock VideoProcessor result
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mock_result = Mock()
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mock_result.sprite_file = Path("/output/sprite.jpg")
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mock_to_thread.return_value = mock_result
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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with patch('video_processor.streaming.adaptive.VideoProcessor'):
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thumbnail_track = await processor._generate_thumbnail_track(
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Path("input.mp4"), Path("/output"), "test_video"
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)
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assert thumbnail_track == Path("/output/sprite.jpg")
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@pytest.mark.asyncio
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@patch('video_processor.streaming.adaptive.asyncio.to_thread')
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async def test_generate_thumbnail_track_failure(self, mock_to_thread):
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"""Test thumbnail track generation failure."""
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mock_to_thread.side_effect = Exception("Thumbnail generation failed")
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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with patch('video_processor.streaming.adaptive.VideoProcessor'):
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thumbnail_track = await processor._generate_thumbnail_track(
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Path("input.mp4"), Path("/output"), "test_video"
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)
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assert thumbnail_track is None
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@pytest.mark.asyncio
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@patch('video_processor.streaming.adaptive.AdaptiveStreamProcessor._generate_hls_playlist')
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@patch('video_processor.streaming.adaptive.AdaptiveStreamProcessor._generate_dash_manifest')
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@patch('video_processor.streaming.adaptive.AdaptiveStreamProcessor._generate_thumbnail_track')
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@patch('video_processor.streaming.adaptive.AdaptiveStreamProcessor._generate_bitrate_renditions')
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@patch('video_processor.streaming.adaptive.AdaptiveStreamProcessor._generate_optimal_bitrate_ladder')
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async def test_create_adaptive_stream(
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self, mock_ladder, mock_renditions, mock_thumbnail, mock_dash, mock_hls
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):
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"""Test complete adaptive stream creation."""
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# Setup mocks
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mock_bitrate_levels = [
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BitrateLevel("720p", 1280, 720, 3000, 4500, "h264", "mp4")
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]
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mock_rendition_files = {"720p": Path("/output/720p.mp4")}
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mock_ladder.return_value = mock_bitrate_levels
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mock_renditions.return_value = mock_rendition_files
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mock_thumbnail.return_value = Path("/output/sprite.jpg")
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mock_hls.return_value = Path("/output/playlist.m3u8")
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mock_dash.return_value = Path("/output/manifest.mpd")
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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with patch('pathlib.Path.mkdir'):
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result = await processor.create_adaptive_stream(
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Path("input.mp4"),
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Path("/output"),
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"test_video",
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["hls", "dash"]
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)
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assert isinstance(result, StreamingPackage)
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assert result.video_id == "test_video"
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assert result.hls_playlist == Path("/output/playlist.m3u8")
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assert result.dash_manifest == Path("/output/manifest.mpd")
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assert result.thumbnail_track == Path("/output/sprite.jpg")
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assert result.bitrate_levels == mock_bitrate_levels
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@pytest.mark.asyncio
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async def test_create_adaptive_stream_with_custom_ladder(self):
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"""Test adaptive stream creation with custom bitrate ladder."""
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custom_levels = [
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BitrateLevel("480p", 854, 480, 1500, 2250, "h264", "mp4"),
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]
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config = ProcessorConfig()
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processor = AdaptiveStreamProcessor(config)
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with patch.multiple(
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processor,
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_generate_bitrate_renditions=AsyncMock(return_value={"480p": Path("test.mp4")}),
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_generate_hls_playlist=AsyncMock(return_value=Path("playlist.m3u8")),
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_generate_dash_manifest=AsyncMock(return_value=Path("manifest.mpd")),
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_generate_thumbnail_track=AsyncMock(return_value=Path("sprite.jpg")),
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), patch('pathlib.Path.mkdir'):
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result = await processor.create_adaptive_stream(
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Path("input.mp4"),
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Path("/output"),
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"test_video",
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custom_bitrate_ladder=custom_levels
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)
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assert result.bitrate_levels == custom_levels |