fix: enforce max_concurrent and global speed-limit distribution

downloader/ffmpeg_hls.py

@@ -47,6 +47,8 @@ class FfmpegHlsDownloader(BaseDownloader):
             
             # ffmpeg 명령어 구성
             ffmpeg_path = options.get('ffmpeg_path', 'ffmpeg')
+            if options.get('effective_max_download_rate') or options.get('max_download_rate'):
+                logger.warning('[GDM] ffmpeg_hls downloader does not support strict bandwidth cap; total limit may be approximate for HLS tasks.')
             
             cmd = [ffmpeg_path, '-y']
             

downloader/http_direct.py

@@ -5,6 +5,8 @@ HTTP 직접 다운로더
 """
 import os
 import traceback
+import re
+import time
 from typing import Dict, Any, Optional, Callable
 
 from .base import BaseDownloader
@@ -19,6 +21,21 @@ except:
 
 class HttpDirectDownloader(BaseDownloader):
     """HTTP 직접 다운로더"""
+
+    @staticmethod
+    def _rate_to_bps(rate_value: Any) -> float:
+        if rate_value is None:
+            return 0.0
+        value = str(rate_value).strip().upper()
+        if not value or value in ('0', 'UNLIMITED'):
+            return 0.0
+        m = re.match(r'^(\d+(?:\.\d+)?)\s*([KMG])(?:I?B)?$', value)
+        if not m:
+            return 0.0
+        num = float(m.group(1))
+        unit = m.group(2)
+        mul = {'K': 1024, 'M': 1024 ** 2, 'G': 1024 ** 3}[unit]
+        return num * mul
     
     def download(
         self,
@@ -53,6 +70,9 @@ class HttpDirectDownloader(BaseDownloader):
             total_size = int(response.headers.get('content-length', 0))
             downloaded = 0
             chunk_size = 1024 * 1024  # 1MB 청크
+            max_rate = options.get('effective_max_download_rate') or options.get('max_download_rate')
+            rate_bps = self._rate_to_bps(max_rate)
+            start_time = time.monotonic()
             
             with open(filepath, 'wb') as f:
                 for chunk in response.iter_content(chunk_size=chunk_size):
@@ -62,6 +82,13 @@ class HttpDirectDownloader(BaseDownloader):
                     if chunk:
                         f.write(chunk)
                         downloaded += len(chunk)
+
+                        # 평균 다운로드 속도를 제한(총량 제한 분배값 포함)
+                        if rate_bps > 0:
+                            elapsed = max(0.001, time.monotonic() - start_time)
+                            expected_elapsed = downloaded / rate_bps
+                            if expected_elapsed > elapsed:
+                                time.sleep(expected_elapsed - elapsed)
                         
                         if total_size > 0 and progress_callback:
                             progress = int(downloaded / total_size * 100)

downloader/ytdlp_aria2.py

@@ -26,6 +26,19 @@ class YtdlpAria2Downloader(BaseDownloader):
     def __init__(self):
         super().__init__()
         self._process: Optional[subprocess.Popen] = None
+
+    @staticmethod
+    def _normalize_rate(raw_rate: Any) -> str:
+        """속도 제한 문자열 정규화 (예: 6MB -> 6M, 0/None -> '')"""
+        if raw_rate is None:
+            return ''
+        value = str(raw_rate).strip().upper()
+        if not value or value in ('0', '0B', 'UNLIMITED'):
+            return ''
+        m = re.match(r'^(\d+(?:\.\d+)?)\s*([KMG])(?:I?B)?$', value)
+        if m:
+            return f'{m.group(1)}{m.group(2)}'
+        return value
     
     def download(
         self,
@@ -61,8 +74,12 @@ class YtdlpAria2Downloader(BaseDownloader):
             cmd.extend(['--print', 'before_dl:GDM_FIX:thumb:%(thumbnail)s'])
             
             # 속도 제한 설정
-            max_rate = P.ModelSetting.get('max_download_rate')
-            rate_limited = bool(max_rate and max_rate != '0')
+            max_rate = self._normalize_rate(
+                options.get('effective_max_download_rate')
+                or options.get('max_download_rate')
+                or P.ModelSetting.get('max_download_rate')
+            )
+            rate_limited = bool(max_rate)
             
             # aria2c 사용 (설치되어 있으면)
             aria2c_path = options.get('aria2c_path', 'aria2c')
@@ -83,6 +100,10 @@ class YtdlpAria2Downloader(BaseDownloader):
             # yt-dlp native downloader 제한 (external-downloader 미사용/보조 경로)
             if rate_limited:
                 cmd.extend(['--limit-rate', max_rate])
+                if options.get('is_global_rate_split'):
+                    logger.info(f'[GDM] global split limit enabled: {max_rate}/s per task')
+                else:
+                    logger.info(f'[GDM] download speed limit enabled: {max_rate}/s')
 
             # 포맷 선택
             format_spec = options.get('format')