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Update app.py
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app.py
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@@ -6,45 +6,71 @@ import uuid
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allowed_medias = [".png", ".jpg", ".jpeg", ".bmp", ".gif", ".tiff"]
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def
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if not images:
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return None, "❌ Keine Bilder ausgewählt"
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temp_dir = tempfile.mkdtemp()
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if output_file.exists():
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return str(output_file), f"✅ Slideshow Video erstellt ({len(images)} Bilder, {duration}s pro Bild)"
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else:
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with gr.Blocks() as demo:
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duration_input = gr.Number(value=3, label="Dauer pro Bild in Sekunden", precision=1)
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out_video = gr.Video(interactive=False, label="Generiertes Video")
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status = gr.Textbox(interactive=False, label="Status")
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btn = gr.Button("Video erstellen")
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btn.click(
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demo.launch()
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allowed_medias = [".png", ".jpg", ".jpeg", ".bmp", ".gif", ".tiff"]
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def generate_slideshow_with_fade(images, duration):
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"""
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Erzeugt ein Video aus mehreren Bildern mit Fade-Übergang zwischen allen Bildern.
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"""
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if not images:
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return None, "❌ Keine Bilder ausgewählt"
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temp_dir = tempfile.mkdtemp()
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clips = []
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# Schritt 1: Einzelne Clips erstellen
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for idx, img_path in enumerate(images):
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clip_file = Path(temp_dir) / f"clip_{idx}.mp4"
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cmd = [
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"ffmpeg",
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"-y",
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"-loop", "1",
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"-i", str(img_path),
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"-t", str(duration),
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"-vf", "scale=trunc(iw/2)*2:trunc(ih/2)*2,fps=25,format=yuv420p",
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str(clip_file)
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]
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subprocess.run(cmd, check=True)
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clips.append(clip_file)
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# Schritt 2: Übergänge mit xfade
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if len(clips) == 1:
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# Nur ein Clip, kein Übergang
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return str(clips[0]), f"✅ Video erstellt ({len(clips)} Bild)"
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else:
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# Dynamische Filterchain
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inputs = ""
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filter_chain = ""
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for i, clip in enumerate(clips):
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inputs += f" -i {clip}"
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for i in range(len(clips)-1):
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filter_chain += f"[{i}:v][{i+1}:v]xfade=transition=fade:duration=1:offset={duration*i}[v{i+1}];"
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final_label = f"[v{len(clips)-1}]"
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output_file = Path(temp_dir) / f"slideshow_{uuid.uuid4().hex}.mp4"
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cmd = f"ffmpeg -y {inputs} -filter_complex \"{filter_chain[:-1]}\" -map {final_label} {output_file}"
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subprocess.run(cmd, shell=True, check=True)
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if output_file.exists():
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return str(output_file), f"✅ Slideshow Video erstellt mit Fade ({len(clips)} Bilder)"
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else:
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return None, "❌ Video konnte nicht erstellt werden"
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# Gradio UI
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with gr.Blocks() as demo:
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gr.Markdown("# Slideshow Video Generator mit Fade-Übergängen")
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img_input = gr.Files(
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label="Bilder auswählen (mehrere)",
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file_types=allowed_medias
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)
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duration_input = gr.Number(value=3, label="Dauer pro Bild in Sekunden", precision=1)
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out_video = gr.Video(interactive=False, label="Generiertes Video")
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status = gr.Textbox(interactive=False, label="Status")
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btn = gr.Button("Video erstellen")
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btn.click(
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fn=generate_slideshow_with_fade,
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inputs=[img_input, duration_input],
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outputs=[out_video, status]
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)
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demo.launch()
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