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16 changes: 13 additions & 3 deletions comfy_api/latest/_input_impl/video_types.py
Original file line number Diff line number Diff line change
Expand Up @@ -281,11 +281,18 @@ def get_components_internal(self, container: InputContainer) -> VideoComponents:
video_done = False
audio_done = True

if len(container.streams.audio):
audio_stream = container.streams.audio[-1]
# Use the last decodable audio stream. Streams FFmpeg has no decoder for have no codec context,
# and decoding their packets crashes the process. (e.g. APAC spatial-audio track in iPhone)
audio_stream = next(
(s for s in reversed(container.streams.audio) if s.codec_context is not None),
None,
)
if audio_stream is not None:
streams += [audio_stream]
resampler = av.audio.resampler.AudioResampler(format='fltp')
audio_done = False
elif len(container.streams.audio):
logging.warning("No decodable audio stream found in video; ignoring audio.")

for packet in container.demux(*streams):
if video_done and audio_done:
Expand Down Expand Up @@ -457,10 +464,13 @@ def save_to(
else:
output_container.metadata[key] = json.dumps(value)

# Add streams to the new container
# Add streams to the new container. Streams with no codec context cannot be used as an output template.
stream_map = {}
for stream in streams:
if isinstance(stream, (av.VideoStream, av.AudioStream, SubtitleStream)):
if stream.codec_context is None:
logging.warning("Skipping %s stream %d with unsupported codec", stream.type, stream.index)
continue
out_stream = output_container.add_stream_from_template(template=stream, opaque=True)
stream_map[stream] = out_stream

Expand Down
9 changes: 8 additions & 1 deletion comfy_api_nodes/util/upload_helpers.py
Original file line number Diff line number Diff line change
Expand Up @@ -158,7 +158,14 @@ async def upload_video_to_comfyapi(

# Convert VideoInput to BytesIO using specified container/codec
video_bytes_io = BytesIO()
video.save_to(video_bytes_io, format=container, codec=codec)
try:
video.save_to(video_bytes_io, format=container, codec=codec)
except Exception as e:
raise ValueError(
f"Could not convert the input video to {container.value.upper()} for upload; "
f"the file may be corrupted or use an unsupported codec. "
f"Try re-exporting it as MP4 (H.264). Original error: {e}"
) from e
video_bytes_io.seek(0)

return await upload_file_to_comfyapi(cls, video_bytes_io, filename, upload_mime_type, wait_label)
Expand Down
150 changes: 150 additions & 0 deletions comfy_extras/nodes_text_overlay.py
Original file line number Diff line number Diff line change
@@ -0,0 +1,150 @@
import numpy as np
import torch
from PIL import Image as PILImage, ImageColor, ImageDraw, ImageFont
from typing_extensions import override

from comfy_api.latest import ComfyExtension, IO


class TextOverlay(IO.ComfyNode):
@classmethod
def define_schema(cls):
return IO.Schema(
node_id="TextOverlay",
display_name="Draw Text Overlay",
category="text",
description="Draw text overlay on an image or batch of images.",
search_aliases=["text", "label", "caption", "subtitle", "watermark", "title", "addlabel", "overlay"],
inputs=[
IO.Image.Input("images"),
IO.String.Input("text", multiline=True, default=""),
IO.Float.Input("font_size", default=5.0, min=0.5, max=50.0, step=0.5, tooltip="Font size as a percentage of the image height."),
IO.Color.Input("color", default="#ffffff", tooltip="Color of the text."),
IO.Combo.Input("position", options=["top", "bottom"], default="top"),
IO.Combo.Input("align", options=["left", "center", "right"], default="left"),
IO.Boolean.Input("outline", default=True, tooltip="Draw a black outline around the text."),
],
outputs=[IO.Image.Output(display_name="images")],
)

@classmethod
def execute(cls, images, text, font_size, color, position, align, outline) -> IO.NodeOutput:
if text.strip() == "":
return IO.NodeOutput(images)

text = text.replace("\\n", "\n").replace("\\t", "\t")

text_rgba = cls.parse_color_to_rgba(color)
outline_rgba = (0, 0, 0, 255) if outline else (0, 0, 0, 0)

# Render the overlay once and composite it across all frames in the batch
height = images.shape[1]
width = images.shape[2]
overlay_rgb, overlay_alpha = cls.render_overlay_text(width, height, text, position, align, font_size, text_rgba, outline_rgba)
overlay_rgb = overlay_rgb.to(device=images.device, dtype=images.dtype)
overlay_alpha = overlay_alpha.to(device=images.device, dtype=images.dtype)

result = images * (1.0 - overlay_alpha) + overlay_rgb * overlay_alpha
return IO.NodeOutput(result)

@staticmethod
def parse_color_to_rgba(color_string):
parsed = ImageColor.getrgb(color_string)

if len(parsed) == 3:
return (*parsed, 255)

return parsed

@classmethod
def render_overlay_text(cls, width, height, text, position, align, font_size, text_rgba, outline_rgba):
line_spacing = 1.2
margin_percent = 1.0
min_font_percent = 2.0
min_font_pixels = 10
outline_thickness_factor = 0.04

# Draw onto a transparent layer so the result can be alpha-composited over any frame.
layer = PILImage.new("RGBA", (width, height), (0, 0, 0, 0))
draw = ImageDraw.Draw(layer)

margin = int(round(margin_percent / 100.0 * min(width, height)))
max_width = max(1, width - 2 * margin)
max_height = max(1, height - 2 * margin)

# Font scales with resolution, then shrinks to fit the height.
size = max(1, int(round(font_size / 100.0 * height)))
floor = min(size, max(min_font_pixels, int(round(min_font_percent / 100.0 * height))))

while True:
font = ImageFont.load_default(size=size)
stroke = max(1, int(round(size * outline_thickness_factor))) if outline_rgba[3] > 0 else 0
block = "\n".join(cls.wrap_text(text, font, max_width))
# convert line spacing to pixel spacing
single = draw.textbbox((0, 0), "Ay", font=font, stroke_width=stroke)
double = draw.multiline_textbbox((0, 0), "Ay\nAy", font=font, spacing=0, stroke_width=stroke)
natural_advance = (double[3] - double[1]) - (single[3] - single[1])
pixel_spacing = int(round(size * line_spacing - natural_advance))
box = draw.multiline_textbbox((0, 0), block, font=font, spacing=pixel_spacing, stroke_width=stroke)
block_height = box[3] - box[1]

if block_height <= max_height or size <= floor:
break

size = max(floor, int(size * 0.9))

anchor_h, x = {"left": ("l", margin), "center": ("m", width / 2), "right": ("r", width - margin)}[align]

# Offset y so the rendered text sits flush against the margin
if position == "bottom":
y = height - margin - box[3]
else:
y = margin - box[1]

draw.multiline_text((x, y), block, font=font, fill=text_rgba, anchor=anchor_h + "a",
align=align, spacing=pixel_spacing, stroke_width=stroke, stroke_fill=outline_rgba)

overlay = np.array(layer).astype(np.float32) / 255.0
overlay_rgb = torch.from_numpy(overlay[:, :, :3])
overlay_alpha = torch.from_numpy(overlay[:, :, 3:4])
return overlay_rgb, overlay_alpha

@staticmethod
def wrap_text(text, font, max_width):
lines = []
for raw_line in text.split("\n"):
words = raw_line.split()
if not words:
lines.append("")
continue
current = ""
# Break the line into words and split words that are too long
for word in words:
while font.getlength(word) > max_width and len(word) > 1:
cut = 1
while cut < len(word) and font.getlength(word[:cut + 1]) <= max_width:
cut += 1
if current:
lines.append(current)
current = ""
lines.append(word[:cut])
word = word[cut:]
candidate = word if not current else current + " " + word
if not current or font.getlength(candidate) <= max_width:
current = candidate
else:
lines.append(current)
current = word
if current:
lines.append(current)
return lines


class TextOverlayExtension(ComfyExtension):
@override
async def get_node_list(self) -> list[type[IO.ComfyNode]]:
return [TextOverlay]


async def comfy_entrypoint() -> TextOverlayExtension:
return TextOverlayExtension()
1 change: 1 addition & 0 deletions nodes.py
Original file line number Diff line number Diff line change
Expand Up @@ -2478,6 +2478,7 @@ async def init_builtin_extra_nodes():
"nodes_glsl.py",
"nodes_lora_debug.py",
"nodes_textgen.py",
"nodes_text_overlay.py",
"nodes_color.py",
"nodes_toolkit.py",
"nodes_replacements.py",
Expand Down
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