feat: 타임라인 에디터 및 비디오 스튜디오 컴포넌트 추가
- TimelineEditor, VideoStudio 컴포넌트 신규 추가 - 백엔드 transcriber, video_processor 서비스 개선 - 프론트엔드 HomePage 리팩토링 및 스타일 업데이트 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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kihong.kim
@@ -15,6 +15,7 @@ async def process_video(
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intro_text: Optional[str] = None,
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intro_duration: float = 0.7,
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intro_font_size: int = 100,
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intro_position: str = "center", # top, center, bottom
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) -> Tuple[bool, str]:
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"""
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Process video: remove audio, add subtitles, add BGM, add intro text.
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@@ -157,13 +158,21 @@ async def process_video(
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escaped_text = display_text.replace("'", "\\'").replace(":", "\\:")
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# Draw text centered on screen during freeze frame
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# Calculate vertical position based on intro_position
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if intro_position == "top":
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y_expr = "h*0.15" # 15% from top
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elif intro_position == "bottom":
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y_expr = "h*0.80-text_h" # 80% from top (above subtitle area)
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else: # center
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y_expr = "(h-text_h)/2" # Center vertically
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# Draw text on screen during freeze frame
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drawtext_parts = [
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f"text='{escaped_text}'",
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f"fontsize={adjusted_font_size}",
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"fontcolor=white",
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"x=(w-text_w)/2", # Center horizontally
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"y=(h-text_h)/2", # Center vertically
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f"y={y_expr}", # Vertical position based on intro_position
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f"enable='lt(t,{intro_duration})'",
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"borderw=4",
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"bordercolor=black",
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@@ -311,15 +320,17 @@ async def trim_video(
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output_path: str,
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start_time: float,
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end_time: float,
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exclude_regions: list = None,
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) -> Tuple[bool, str]:
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"""
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Trim video to specified time range.
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Trim video to specified time range, optionally excluding middle sections.
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Args:
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input_path: Path to input video
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output_path: Path for output video
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start_time: Start time in seconds
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end_time: End time in seconds
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exclude_regions: List of dicts with 'start' and 'end' keys for sections to remove
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Returns:
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Tuple of (success, message)
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@@ -341,6 +352,13 @@ async def trim_video(
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os.makedirs(os.path.dirname(output_path), exist_ok=True)
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# If there are exclude regions, use the complex concat approach
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if exclude_regions and len(exclude_regions) > 0:
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return await _trim_with_exclude_regions(
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input_path, output_path, start_time, end_time, exclude_regions
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)
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# Simple trim without exclude regions
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trim_duration = end_time - start_time
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# Log trim parameters for debugging
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@@ -400,6 +418,138 @@ async def trim_video(
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return False, f"Trim error: {str(e)}"
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async def _trim_with_exclude_regions(
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input_path: str,
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output_path: str,
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start_time: float,
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end_time: float,
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exclude_regions: list,
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) -> Tuple[bool, str]:
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"""
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Trim video with exclude regions - cuts out specified sections and concatenates remaining parts.
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Uses FFmpeg's filter_complex with trim and concat filters.
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"""
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import tempfile
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print(f"[Trim] Trimming with {len(exclude_regions)} exclude regions")
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print(f"[Trim] Main range: {start_time:.3f}s - {end_time:.3f}s")
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for i, region in enumerate(exclude_regions):
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print(f"[Trim] Exclude region {i}: {region['start']:.3f}s - {region['end']:.3f}s")
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# Sort and merge overlapping exclude regions
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sorted_regions = sorted(exclude_regions, key=lambda r: r['start'])
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merged_regions = []
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for region in sorted_regions:
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# Clip region to main trim range
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region_start = max(region['start'], start_time)
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region_end = min(region['end'], end_time)
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if region_start >= region_end:
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continue # Skip invalid regions
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if merged_regions and region_start <= merged_regions[-1]['end']:
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merged_regions[-1]['end'] = max(merged_regions[-1]['end'], region_end)
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else:
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merged_regions.append({'start': region_start, 'end': region_end})
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if not merged_regions:
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# No valid exclude regions, use simple trim
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print("[Trim] No valid exclude regions after merging, using simple trim")
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return await trim_video(input_path, output_path, start_time, end_time, None)
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# Calculate keep segments (inverse of exclude regions)
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keep_segments = []
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current_pos = start_time
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for region in merged_regions:
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if current_pos < region['start']:
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keep_segments.append({'start': current_pos, 'end': region['start']})
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current_pos = region['end']
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# Add final segment if there's remaining time
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if current_pos < end_time:
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keep_segments.append({'start': current_pos, 'end': end_time})
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if not keep_segments:
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return False, "No video segments remaining after excluding regions"
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print(f"[Trim] Keep segments: {keep_segments}")
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# Calculate expected output duration
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expected_duration = sum(seg['end'] - seg['start'] for seg in keep_segments)
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print(f"[Trim] Expected output duration: {expected_duration:.3f}s")
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# Build FFmpeg filter_complex for concatenation
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# Each segment needs: trim, setpts for video; atrim, asetpts for audio
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video_filters = []
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audio_filters = []
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segment_labels = []
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for i, seg in enumerate(keep_segments):
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seg_duration = seg['end'] - seg['start']
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# Video filter: trim and reset timestamps
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video_filters.append(
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f"[0:v]trim=start={seg['start']:.6f}:end={seg['end']:.6f},setpts=PTS-STARTPTS[v{i}]"
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)
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# Audio filter: atrim and reset timestamps
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audio_filters.append(
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f"[0:a]atrim=start={seg['start']:.6f}:end={seg['end']:.6f},asetpts=PTS-STARTPTS[a{i}]"
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)
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segment_labels.append(f"[v{i}][a{i}]")
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# Concat filter
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concat_input = "".join(segment_labels)
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filter_complex = ";".join(video_filters + audio_filters)
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filter_complex += f";{concat_input}concat=n={len(keep_segments)}:v=1:a=1[outv][outa]"
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cmd = [
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"ffmpeg", "-y",
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"-i", input_path,
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"-filter_complex", filter_complex,
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"-map", "[outv]",
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"-map", "[outa]",
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"-c:v", "libx264",
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"-preset", "fast",
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"-crf", "18",
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"-c:a", "aac",
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"-b:a", "128k",
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"-avoid_negative_ts", "make_zero",
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output_path
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]
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print(f"[Trim] Command: ffmpeg -y -i {input_path} -filter_complex [complex] -map [outv] -map [outa] ...")
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print(f"[Trim] Filter complex: {filter_complex[:200]}..." if len(filter_complex) > 200 else f"[Trim] Filter complex: {filter_complex}")
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try:
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result = await asyncio.to_thread(
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subprocess.run,
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cmd,
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capture_output=True,
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text=True,
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timeout=300, # Longer timeout for complex operations
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)
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if result.returncode != 0:
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error_msg = result.stderr[-500:] if result.stderr else "Unknown error"
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print(f"[Trim] FFmpeg error: {error_msg}")
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return False, f"Trim with exclude regions failed: {error_msg}"
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if os.path.exists(output_path):
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new_duration = await get_video_duration(output_path)
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print(f"[Trim] Success! New duration: {new_duration:.3f}s (expected: {expected_duration:.3f}s)")
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return True, f"Video trimmed successfully ({new_duration:.1f}s, excluded {len(merged_regions)} regions)"
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else:
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print("[Trim] Error: Output file not created")
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return False, "Output file not created"
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except subprocess.TimeoutExpired:
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print("[Trim] Error: Timeout")
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return False, "Trim operation timed out"
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except Exception as e:
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print(f"[Trim] Error: {str(e)}")
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return False, f"Trim error: {str(e)}"
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async def extract_frame(
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video_path: str,
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output_path: str,
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