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fba6023 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | from __future__ import annotations
from collections.abc import Sequence
from pathlib import Path
from typing import Any
import aiofiles
from app.models.media import InputMedia, OperationResult
from app.operations.common import even, execute, output_path, require_inputs
from app.operations.merge import merge_audio, merge_video
from app.services.ffmpeg_service import FFmpegService
from app.services.validator import as_bool, bounded_number, positive_int
async def concat_video(
ffmpeg: FFmpegService, inputs: Sequence[InputMedia], params: dict[str, Any], output_dir: Path
) -> OperationResult:
require_inputs(inputs, 2)
if not as_bool(params.get("stream_copy"), False):
return await merge_video(
ffmpeg, inputs, params, output_dir, operation="video.concat", stem="concatenated"
)
manifest = output_dir / "concat.txt"
async with aiofiles.open(manifest, "w", encoding="utf-8") as output_file:
for media in inputs:
escaped = str(media.temp_path.resolve()).replace("'", "'\\''")
await output_file.write(f"file '{escaped}'\n")
output = output_path(output_dir, "concatenated", "mp4")
return await execute(
ffmpeg,
[
"-f",
"concat",
"-safe",
"0",
"-i",
manifest,
"-c",
"copy",
"-movflags",
"+faststart",
output,
],
output,
"video.concat",
{"inputs": len(inputs), "stream_copy": True},
)
async def concat_audio(
ffmpeg: FFmpegService, inputs: Sequence[InputMedia], params: dict[str, Any], output_dir: Path
) -> OperationResult:
return await merge_audio(
ffmpeg, inputs, params, output_dir, operation="audio.concat", stem="concatenated"
)
async def image_slideshow(
ffmpeg: FFmpegService, inputs: Sequence[InputMedia], params: dict[str, Any], output_dir: Path
) -> OperationResult:
require_inputs(inputs)
duration = bounded_number(params, "duration_per_image", 3.0, 0.1, 300)
width = even(positive_int(params, "width", 1280))
height = even(positive_int(params, "height", 720))
fps = positive_int(params, "fps", 30)
command: list[str | Path] = []
for media in inputs:
command += ["-loop", "1", "-t", str(duration), "-i", media.temp_path]
filters = [
f"[{index}:v]scale={width}:{height}:force_original_aspect_ratio=decrease,"
f"pad={width}:{height}:(ow-iw)/2:(oh-ih)/2,setsar=1,format=yuv420p[v{index}]"
for index in range(len(inputs))
]
links = "".join(f"[v{index}]" for index in range(len(inputs)))
filters.append(f"{links}concat=n={len(inputs)}:v=1:a=0[v]")
output = output_path(output_dir, "slideshow", "mp4")
command += [
"-filter_complex",
";".join(filters),
"-map",
"[v]",
"-r",
str(fps),
"-c:v",
"libx264",
"-pix_fmt",
"yuv420p",
"-movflags",
"+faststart",
output,
]
return await execute(
ffmpeg,
command,
output,
"image.slideshow",
{"images": len(inputs), "duration_per_image": duration},
)
async def image_sequence(
ffmpeg: FFmpegService, inputs: Sequence[InputMedia], params: dict[str, Any], output_dir: Path
) -> OperationResult:
fps = positive_int(params, "fps", 25)
result = await image_slideshow(
ffmpeg,
inputs,
{
"duration_per_image": params.get("duration_per_image", 1 / fps),
**params,
},
output_dir,
)
result.metadata["operation"] = "image.sequence"
return result
async def image_to_video(
ffmpeg: FFmpegService, inputs: Sequence[InputMedia], params: dict[str, Any], output_dir: Path
) -> OperationResult:
require_inputs(inputs)
duration = bounded_number(params, "duration", 5, 0.1, 3600)
fps = positive_int(params, "fps", 30)
output = output_path(output_dir, "image-video", "mp4")
args = [
"-loop",
"1",
"-i",
inputs[0].temp_path,
"-t",
str(duration),
"-vf",
"scale=trunc(iw/2)*2:trunc(ih/2)*2,format=yuv420p",
"-r",
str(fps),
"-c:v",
"libx264",
"-movflags",
"+faststart",
output,
]
return await execute(ffmpeg, args, output, "image.video", {"duration": duration})
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