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fix(ffmpeg): switch to crop-to-fill scaling and center text overlay

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Jacques committed 2026-01-23 20:38:29 +01:00
1 parent a39ed12d1f
commit 4cc416af1b
1 file changed
+8 -6
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ffmpeg-service/main.py
+8 -6
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@@ -470,9 +470,10 @@ async def process_reel(request: ReelRequest, x_api_key: str = Header(None)):
fc_parts = [] fc_parts = []
# A. Video Chain # A. Video Chain
# 1. Scale & Pad & Unsharp # 1. Scale & Crop to Fill 1080x1920 (Vertical Reel)
# [0:v] -> [v_processed] # [0:v] -> [v_processed]
video_filters_str = "scale=1080:1920:force_original_aspect_ratio=decrease,pad=1080:1920:(ow-iw)/2:(oh-ih)/2,unsharp=5:5:0.8:3:3:0.4" # Using 'increase' + 'crop' to ensure full screen coverage without black bars
video_filters_str = "scale=1080:1920:force_original_aspect_ratio=increase,crop=1080:1920,unsharp=5:5:0.8:3:3:0.4"
# 2. Text Overlay # 2. Text Overlay
if request.text and request.draw_text: if request.text and request.draw_text:
@@ -480,8 +481,9 @@ async def process_reel(request: ReelRequest, x_api_key: str = Header(None)):
if has_tts: if has_tts:
# Subtitles (TikTok style) using SRT (already generated in TTS block) # Subtitles (TikTok style) using SRT (already generated in TTS block)
print(f"🎬 Overlaying subtitles from TTS SRT: {tts_srt_path}") print(f"🎬 Overlaying subtitles from TTS SRT: {tts_srt_path}")
# White color (&H00FFFFFF), Size 10, Centered (Alignment 5) # White color (&H00FFFFFF), Size 20, Centered (Alignment 5)
style = f"FontName=DejaVu Sans,FontSize=10,PrimaryColour=&H00FFFFFF,OutlineColour=&H00000000,BorderStyle=1,Outline=1,Shadow=0,Bold=1,Alignment=5,MarginV=0" # Note: FontSize 10 is extremely small, using 20 for minimum legibility
style = f"FontName=DejaVu Sans,FontSize=20,PrimaryColour=&H00FFFFFF,OutlineColour=&H00000000,BorderStyle=1,Outline=1,Shadow=0,Bold=1,Alignment=5,MarginV=0"
srt_path_str = str(tts_srt_path).replace("\\", "/").replace(":", "\\:") srt_path_str = str(tts_srt_path).replace("\\", "/").replace(":", "\\:")
text_filter = f"subtitles='{srt_path_str}':force_style='{style}'" text_filter = f"subtitles='{srt_path_str}':force_style='{style}'"
else: else:
@@ -490,8 +492,8 @@ async def process_reel(request: ReelRequest, x_api_key: str = Header(None)):
std_srt_path = job_dir / "std_text.srt" std_srt_path = job_dir / "std_text.srt"
generate_simple_srt(request.text, std_srt_path) generate_simple_srt(request.text, std_srt_path)
# White color (&H00FFFFFF), Size 10, Centered (Alignment 5) # White color (&H00FFFFFF), Size 20, Centered (Alignment 5)
style = f"FontName=DejaVu Sans,FontSize=10,PrimaryColour=&H00FFFFFF,OutlineColour=&H00000000,BorderStyle=1,Outline=1,Shadow=0,Bold=1,Alignment=5,MarginV=0" style = f"FontName=DejaVu Sans,FontSize=20,PrimaryColour=&H00FFFFFF,OutlineColour=&H00000000,BorderStyle=1,Outline=1,Shadow=0,Bold=1,Alignment=5,MarginV=0"
srt_path_str = str(std_srt_path).replace("\\", "/").replace(":", "\\:") srt_path_str = str(std_srt_path).replace("\\", "/").replace(":", "\\:")
text_filter = f"subtitles='{std_srt_path}':force_style='{style}'" text_filter = f"subtitles='{std_srt_path}':force_style='{style}'"