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UGC 內容","\u002Fzh-hant\u002Fusecases\u002Fvideo-platforms","zh-Hant\u002F4.usecases\u002F2.video-platforms",{"title":665,"path":666,"stem":667,"icon":114},"直播回放與賽事錄影","\u002Fzh-hant\u002Fusecases\u002Flive-replays","zh-Hant\u002F4.usecases\u002F3.live-replays",{"title":669,"path":670,"stem":671,"icon":119},"播客與音訊內容","\u002Fzh-hant\u002Fusecases\u002Fpodcasts-audio","zh-Hant\u002F4.usecases\u002F4.podcasts-audio",{"title":673,"path":674,"stem":675,"icon":53},"圖庫與桌布批次下載","\u002Fzh-hant\u002Fusecases\u002Fimage-galleries","zh-Hant\u002F4.usecases\u002F5.image-galleries",{"title":677,"path":678,"stem":679,"icon":128},"企業培訓與內部影片","\u002Fzh-hant\u002Fusecases\u002Fcorporate-training","zh-Hant\u002F4.usecases\u002F6.corporate-training",{"title":681,"path":682,"stem":683,"icon":133},"個人媒體收藏與歸檔","\u002Fzh-hant\u002Fusecases\u002Fpersonal-archiving","zh-Hant\u002F4.usecases\u002F7.personal-archiving",{"title":685,"icon":136,"path":686,"stem":687,"children":688,"page":32},"疑難排解","\u002Fzh-hant\u002Ftroubleshooting","zh-Hant\u002F5.troubleshooting",[689,693,697],{"title":690,"path":691,"stem":692,"icon":136},"常見問題排查","\u002Fzh-hant\u002Ftroubleshooting\u002Fcommon-issues","zh-Hant\u002F5.troubleshooting\u002F1.common-issues",{"title":694,"path":695,"stem":696,"icon":148},"已知限制與注意事項","\u002Fzh-hant\u002Ftroubleshooting\u002Fknown-issues","zh-Hant\u002F5.troubleshooting\u002F2.known-issues",{"title":698,"path":699,"stem":700,"icon":153},"常見問題解答","\u002Fzh-hant\u002Ftroubleshooting\u002Ffaq","zh-Hant\u002F5.troubleshooting\u002F3.faq",{"title":568,"icon":156,"path":702,"stem":703,"children":704,"page":32},"\u002Fzh-hant\u002Fdeveloper","zh-Hant\u002F6.developer",[705,709],{"title":706,"path":707,"stem":708,"icon":164},"貢獻指南","\u002Fzh-hant\u002Fdeveloper\u002Fcontributing","zh-Hant\u002F6.developer\u002F1.contributing",{"title":710,"path":711,"stem":712,"icon":169},"專案架構","\u002Fzh-hant\u002Fdeveloper\u002Farchitecture","zh-Hant\u002F6.developer\u002F2.architecture",{"id":714,"title":102,"body":715,"description":1622,"extension":1623,"meta":1624,"navigation":1625,"path":103,"seo":1626,"stem":104,"__hash__":1627},"docs\u002F1.docs\u002F4.usecases\u002F1.online-courses.md",{"type":716,"value":717,"toc":1591},"minimark",[718,722,725,730,733,861,866,869,941,958,960,964,968,981,985,996,1009,1013,1016,1092,1099,1103,1152,1162,1166,1169,1183,1193,1195,1198,1202,1205,1217,1226,1230,1233,1244,1253,1257,1260,1271,1280,1284,1287,1333,1335,1339,1343,1346,1357,1361,1423,1427,1438,1440,1444,1447,1451,1497,1501,1515,1519,1530,1537,1539,1543],[719,720,721],"p",{},"Course videos on online education platforms are typically delivered via streaming technology, making direct right-click saving impossible. FlowPick helps you save purchased course videos locally for convenient offline learning or backup.",[723,724],"hr",{},[726,727,729],"h2",{"id":728},"supported-platforms","Supported Platforms",[719,731,732],{},"The following platforms have been community-verified to work with FlowPick for detecting and downloading course videos:",[734,735,736,758],"table",{},[737,738,739],"thead",{},[740,741,742,746,749,752,755],"tr",{},[743,744,745],"th",{},"Platform",[743,747,748],{},"Streaming Protocol",[743,750,751],{},"Encryption",[743,753,754],{},"Difficulty",[743,756,757],{},"Status",[759,760,761,779,792,806,821,834,847],"tbody",{},[740,762,763,767,770,773,776],{},[764,765,766],"td",{},"China University MOOC",[764,768,769],{},"HLS",[764,771,772],{},"Usually unencrypted",[764,774,775],{},"Low",[764,777,778],{},"Verified",[740,780,781,784,786,788,790],{},[764,782,783],{},"XuetangX",[764,785,769],{},[764,787,772],{},[764,789,775],{},[764,791,778],{},[740,793,794,797,800,802,804],{},[764,795,796],{},"Udemy",[764,798,799],{},"HLS\u002FDASH",[764,801,772],{},[764,803,775],{},[764,805,778],{},[740,807,808,811,813,816,819],{},[764,809,810],{},"Bilibili Classroom",[764,812,769],{},[764,814,815],{},"Partially encrypted",[764,817,818],{},"Medium",[764,820,778],{},[740,822,823,826,828,830,832],{},[764,824,825],{},"NetEase Cloud Classroom",[764,827,769],{},[764,829,815],{},[764,831,818],{},[764,833,778],{},[740,835,836,839,841,843,845],{},[764,837,838],{},"Coursera",[764,840,769],{},[764,842,815],{},[764,844,818],{},[764,846,778],{},[740,848,849,852,854,857,859],{},[764,850,851],{},"Tencent Classroom",[764,853,769],{},[764,855,856],{},"Usually encrypted",[764,858,818],{},[764,860,778],{},[862,863,865],"h3",{"id":864},"platform-compatibility-notes","Platform Compatibility Notes",[719,867,868],{},"Not all educational platforms work with FlowPick. The following scenarios may cause detection or download failure:",[734,870,871,884],{},[737,872,873],{},[740,874,875,878,881],{},[743,876,877],{},"Limitation Type",[743,879,880],{},"Description",[743,882,883],{},"Typical Platforms",[759,885,886,897,908,919,930],{},[740,887,888,891,894],{},[764,889,890],{},"DRM Protection",[764,892,893],{},"Uses Widevine\u002FFairPlay DRM technology, cannot decrypt",[764,895,896],{},"Some paid course platforms",[740,898,899,902,905],{},[764,900,901],{},"Custom Encryption",[764,903,904],{},"Uses non-standard encryption schemes, cannot parse",[764,906,907],{},"Some enterprise training platforms",[740,909,910,913,916],{},[764,911,912],{},"Dedicated Client",[764,914,915],{},"Must play within dedicated app, browser cannot access",[764,917,918],{},"Some vocational skill platforms",[740,920,921,924,927],{},[764,922,923],{},"Dynamic Token",[764,925,926],{},"Segment URLs contain short-lived tokens that expire",[764,928,929],{},"Some live replay platforms",[740,931,932,935,938],{},[764,933,934],{},"Anti-scraping",[764,936,937],{},"Detects download behavior and blocks IP or accounts",[764,939,940],{},"Some strict content platforms",[942,943,944],"note",{},[719,945,946,947,952,953,957],{},"For technical details on DRM protection limitations, see ",[948,949,951],"a",{"href":950},"\u002Fdocs\u002Ftroubleshooting\u002Fknown-issues#drm-protected-content","Known Limitations — DRM Protected Content",". For AES-128 encryption support scope, see ",[948,954,956],{"href":955},"\u002Fdocs\u002Ffeatures\u002Fvideo-sniffing#encrypted-streams-aes-128","Video Sniffing — Encrypted Streams",".",[723,959],{},[726,961,963],{"id":962},"workflow","Workflow",[862,965,967],{"id":966},"step-1-locate-the-course-video-page","Step 1: Locate the Course Video Page",[969,970,971,975,978],"ol",{},[972,973,974],"li",{},"Log in to the course platform and navigate to the course detail page",[972,976,977],{},"Find the video lesson you want to download",[972,979,980],{},"Click to play and let the video start loading",[862,982,984],{"id":983},"step-2-detect-media-resources","Step 2: Detect Media Resources",[969,986,987,990,993],{},[972,988,989],{},"Click the FlowPick icon in the browser toolbar",[972,991,992],{},"The popup window will automatically list detected video streams",[972,994,995],{},"If the list is empty, refresh the page, replay the video for a few seconds, then try again",[942,997,998],{},[719,999,1000,1001,1005,1006,957],{},"For complete principles of media detection and troubleshooting when detection fails, see ",[948,1002,1004],{"href":1003},"\u002Fdocs\u002Ffeatures\u002Fvideo-sniffing#detection-principles","Video Sniffing — Detection Principles"," and ",[948,1007,1008],{"href":142},"Common Issues Troubleshooting — Media Detection Issues",[862,1010,1012],{"id":1011},"step-3-select-quality","Step 3: Select Quality",[719,1014,1015],{},"Course videos typically offer multiple quality options:",[734,1017,1018,1034],{},[737,1019,1020],{},[740,1021,1022,1025,1028,1031],{},[743,1023,1024],{},"Quality",[743,1026,1027],{},"Resolution",[743,1029,1030],{},"Use Case",[743,1032,1033],{},"Estimated Size (1 hour)",[759,1035,1036,1050,1064,1078],{},[740,1037,1038,1041,1044,1047],{},[764,1039,1040],{},"Smooth",[764,1042,1043],{},"360p",[764,1045,1046],{},"Audio only, mobile network",[764,1048,1049],{},"~150MB",[740,1051,1052,1055,1058,1061],{},[764,1053,1054],{},"Standard Definition",[764,1056,1057],{},"480p",[764,1059,1060],{},"Small screen devices",[764,1062,1063],{},"~300MB",[740,1065,1066,1069,1072,1075],{},[764,1067,1068],{},"High Definition",[764,1070,1071],{},"720p",[764,1073,1074],{},"Laptop viewing",[764,1076,1077],{},"~600MB",[740,1079,1080,1083,1086,1089],{},[764,1081,1082],{},"Ultra HD",[764,1084,1085],{},"1080p",[764,1087,1088],{},"Large screen viewing, need clear text",[764,1090,1091],{},"~1.2GB",[719,1093,1094,1098],{},[1095,1096,1097],"strong",{},"Recommendation",": If the course contains extensive whiteboard content or code demos, choose 1080p to ensure text clarity. For lecture-only courses, 720p is sufficient.",[862,1100,1102],{"id":1101},"step-4-configure-download-parameters","Step 4: Configure Download Parameters",[734,1104,1105,1117],{},[737,1106,1107],{},[740,1108,1109,1112,1115],{},[743,1110,1111],{},"Parameter",[743,1113,1114],{},"Recommended Value",[743,1116,880],{},[759,1118,1119,1130,1141],{},[740,1120,1121,1124,1127],{},[764,1122,1123],{},"Output Format",[764,1125,1126],{},"MP4",[764,1128,1129],{},"Best compatibility, plays on all devices",[740,1131,1132,1135,1138],{},[764,1133,1134],{},"Concurrent Threads",[764,1136,1137],{},"2-4",[764,1139,1140],{},"Educational platform CDNs usually don't throttle",[740,1142,1143,1146,1149],{},[764,1144,1145],{},"Save Directory",[764,1147,1148],{},"Organized by course",[764,1150,1151],{},"Create separate folders for each course",[942,1153,1154],{},[719,1155,1156,1157,1159,1160,957],{},"For detailed configuration parameter explanations and adjustment recommendations, see ",[948,1158,28],{"href":29},". For MP4 output format remuxing principles, see ",[948,1161,60],{"href":61},[862,1163,1165],{"id":1164},"step-5-batch-download-courses","Step 5: Batch Download Courses",[719,1167,1168],{},"A course typically contains multiple video lessons. Use batch download:",[969,1170,1171,1174,1177,1180],{},[972,1172,1173],{},"Open each lesson page sequentially, play a few seconds to trigger detection",[972,1175,1176],{},"Each video will automatically join the download queue",[972,1178,1179],{},"Monitor overall progress in the download management panel",[972,1181,1182],{},"Verify file integrity after completion",[942,1184,1185],{},[719,1186,1187,1188,1190,1191,957],{},"For batch download queue management, concurrency control, and status tracking, see ",[948,1189,65],{"href":66},". For write strategy and memory safety with large files (long lessons), see ",[948,1192,91],{"href":92},[723,1194],{},[726,1196,150],{"id":1197},"faq",[862,1199,1201],{"id":1200},"can-i-download-encrypted-course-videos","Can I download encrypted course videos?",[719,1203,1204],{},"FlowPick supports decryption of HLS AES-128 encrypted streams. If the course uses standard AES-128 encryption, it can be downloaded normally. However, the following cases cannot be handled:",[1206,1207,1208,1211,1214],"ul",{},[972,1209,1210],{},"DRM encryption (Widevine, FairPlay, PlayReady)",[972,1212,1213],{},"Custom encryption schemes",[972,1215,1216],{},"Content requiring hardware-level decryption",[942,1218,1219],{},[719,1220,1221,1222,1005,1224,957],{},"For detailed technical documentation on encrypted streams and limitations, see ",[948,1223,956],{"href":955},[948,1225,951],{"href":950},[862,1227,1229],{"id":1228},"what-if-download-speed-is-very-slow","What if download speed is very slow?",[719,1231,1232],{},"Educational platform CDNs usually have ample bandwidth. If speed is slow:",[969,1234,1235,1238,1241],{},[972,1236,1237],{},"Check if concurrent thread count is too low (recommend 4)",[972,1239,1240],{},"Avoid peak hours (8-11 PM)",[972,1242,1243],{},"Check if local network has throttling",[942,1245,1246],{},[719,1247,1248,1249,957],{},"For complete diagnosis process for slow downloads, see ",[948,1250,1252],{"href":1251},"\u002Fdocs\u002Ftroubleshooting\u002Fcommon-issues#slow-download-speed","Common Issues Troubleshooting — Slow Download Speed",[862,1254,1256],{"id":1255},"downloaded-video-has-no-sound","Downloaded video has no sound?",[719,1258,1259],{},"Some platforms use separate audio-video streams. If you encounter this:",[969,1261,1262,1265,1268],{},[972,1263,1264],{},"Check if there's an independent audio stream entry",[972,1266,1267],{},"Download both video stream and audio stream simultaneously",[972,1269,1270],{},"Select MP4 output format; FlowPick will auto-merge them",[942,1272,1273],{},[719,1274,1275,1276,957],{},"For DASH stream audio-video separation handling, see ",[948,1277,1279],{"href":1278},"\u002Fdocs\u002Ffeatures\u002Fvideo-sniffing#audio-video-separation","Video Sniffing — DASH Audio-Video Separation",[862,1281,1283],{"id":1282},"cant-detect-videos-on-some-platforms","Can't detect videos on some platforms?",[719,1285,1286],{},"Some platforms use special video loading methods that prevent FlowPick from detecting:",[734,1288,1289,1299],{},[737,1290,1291],{},[740,1292,1293,1296],{},[743,1294,1295],{},"Cause",[743,1297,1298],{},"Solution",[759,1300,1301,1309,1317,1325],{},[740,1302,1303,1306],{},[764,1304,1305],{},"Video loads in iframe",[764,1307,1308],{},"Right-click iframe → Open in new tab, then use FlowPick on that page",[740,1310,1311,1314],{},[764,1312,1313],{},"Uses dedicated player SDK",[764,1315,1316],{},"Some platforms' custom players don't use standard network requests; may not be detectable",[740,1318,1319,1322],{},[764,1320,1321],{},"Requires login to play",[764,1323,1324],{},"Ensure logged into platform, cookies valid",[740,1326,1327,1330],{},[764,1328,1329],{},"Segment URL dynamically generated",[764,1331,1332],{},"Refresh page and play immediately, complete download before token expires",[723,1334],{},[726,1336,1338],{"id":1337},"best-practices","Best Practices",[862,1340,1342],{"id":1341},"file-organization","File Organization",[719,1344,1345],{},"Organize downloaded course files using this structure:",[1347,1348,1353],"pre",{"className":1349,"code":1351,"language":1352},[1350],"language-text","Course Name\u002F\n├── Chapter 01-Introduction\u002F\n│   ├── 1.1-Course Introduction.mp4\n│   └── 1.2-Environment Setup.mp4\n├── Chapter 02-Basics\u002F\n│   ├── 2.1-Core Concepts.mp4\n│   └── 2.2-First Example.mp4\n└── ...\n","text",[1354,1355,1351],"code",{"__ignoreMap":1356},"",[862,1358,1360],{"id":1359},"storage-planning","Storage Planning",[734,1362,1363,1379],{},[737,1364,1365],{},[740,1366,1367,1370,1373,1376],{},[743,1368,1369],{},"Course Type",[743,1371,1372],{},"Average Lessons",[743,1374,1375],{},"Per Lesson Size",[743,1377,1378],{},"Total Storage Needed",[759,1380,1381,1395,1409],{},[740,1382,1383,1386,1389,1392],{},[764,1384,1385],{},"Short Skill Course",[764,1387,1388],{},"10-20 lessons",[764,1390,1391],{},"200-500MB",[764,1393,1394],{},"5-10GB",[740,1396,1397,1400,1403,1406],{},[764,1398,1399],{},"Comprehensive System Course",[764,1401,1402],{},"50-100 lessons",[764,1404,1405],{},"300-800MB",[764,1407,1408],{},"30-80GB",[740,1410,1411,1414,1417,1420],{},[764,1412,1413],{},"University MOOC",[764,1415,1416],{},"30-60 lessons",[764,1418,1419],{},"400MB-1GB",[764,1421,1422],{},"20-60GB",[862,1424,1426],{"id":1425},"backup-recommendations","Backup Recommendations",[1206,1428,1429,1432,1435],{},[972,1430,1431],{},"Verify files can play normally immediately after download",[972,1433,1434],{},"Back up important courses to external hard drive or NAS",[972,1436,1437],{},"Periodically check file integrity (some platforms update course content)",[723,1439],{},[726,1441,1443],{"id":1442},"copyright-compliance-statement","Copyright & Compliance Statement",[719,1445,1446],{},"Before using FlowPick to download course videos, please understand and comply with these principles:",[862,1448,1450],{"id":1449},"permitted-usage-scope","Permitted Usage Scope",[734,1452,1453,1463],{},[737,1454,1455],{},[740,1456,1457,1460],{},[743,1458,1459],{},"Allowed",[743,1461,1462],{},"Not Allowed",[759,1464,1465,1473,1481,1489],{},[740,1466,1467,1470],{},[764,1468,1469],{},"Download purchased courses for personal offline learning",[764,1471,1472],{},"Share downloaded courses with others",[740,1474,1475,1478],{},[764,1476,1477],{},"Backup purchased courses against platform takedown",[764,1479,1480],{},"Upload downloaded courses to public platforms",[740,1482,1483,1486],{},[764,1484,1485],{},"Watch purchased courses without internet access",[764,1487,1488],{},"Commercially exploit downloaded course content",[740,1490,1491,1494],{},[764,1492,1493],{},"Convert courses to formats suitable for your device",[764,1495,1496],{},"Bypass DRM protection to download unauthorized content",[862,1498,1500],{"id":1499},"platform-terms-of-service","Platform Terms of Service",[1206,1502,1503,1506,1509,1512],{},[972,1504,1505],{},"Some educational platforms' user agreements explicitly prohibit downloading course videos, even if purchased",[972,1507,1508],{},"Before using FlowPick, review the target platform's user agreement and terms of service",[972,1510,1511],{},"If platform terms prohibit downloading, please respect their rules",[972,1513,1514],{},"As tool provider, FlowPick is not responsible for users' download behavior",[862,1516,1518],{"id":1517},"risk-warning","Risk Warning",[1206,1520,1521,1524,1527],{},[972,1522,1523],{},"Some platforms may detect abnormal download behavior and take restrictive measures (e.g., account bans)",[972,1525,1526],{},"Recommend controlling download frequency, avoid mass downloads in short periods",[972,1528,1529],{},"Consequences of download behavior are borne by users themselves",[942,1531,1532],{},[719,1533,1534,1535,957],{},"For FlowPick's privacy commitment (no data collection, no upload), see ",[948,1536,55],{"href":56},[723,1538],{},[726,1540,1542],{"id":1541},"related-documentation","Related Documentation",[1206,1544,1545,1550,1555,1560,1565,1570,1575,1580,1586],{},[972,1546,1547,1549],{},[948,1548,40],{"href":41}," — Video detection principles, HLS\u002FDASH protocol support, encrypted stream decryption",[972,1551,1552,1554],{},[948,1553,65],{"href":66}," — Queue management and concurrency control for multi-lesson batch downloads",[972,1556,1557,1559],{},[948,1558,60],{"href":61}," — MP4 output format remuxing technology",[972,1561,1562,1564],{},[948,1563,91],{"href":92}," — Large file write strategy and memory safety",[972,1566,1567,1569],{},[948,1568,23],{"href":24}," — Basic operation guide and large file downloads",[972,1571,1572,1574],{},[948,1573,28],{"href":29}," — Concurrent threads, output format, save directory configuration",[972,1576,1577,1579],{},[948,1578,141],{"href":142}," — Diagnosis for slow downloads, unplayable videos, etc.",[972,1581,1582,1585],{},[948,1583,1584],{"href":146},"Known Limitations"," — DRM protection, dynamic token, and other technical limitations",[972,1587,1588,1590],{},[948,1589,55],{"href":56}," — Zero data collection promise and local processing explanation",{"title":1356,"searchDepth":1592,"depth":1592,"links":1593},2,[1594,1598,1605,1611,1616,1621],{"id":728,"depth":1592,"text":729,"children":1595},[1596],{"id":864,"depth":1597,"text":865},3,{"id":962,"depth":1592,"text":963,"children":1599},[1600,1601,1602,1603,1604],{"id":966,"depth":1597,"text":967},{"id":983,"depth":1597,"text":984},{"id":1011,"depth":1597,"text":1012},{"id":1101,"depth":1597,"text":1102},{"id":1164,"depth":1597,"text":1165},{"id":1197,"depth":1592,"text":150,"children":1606},[1607,1608,1609,1610],{"id":1200,"depth":1597,"text":1201},{"id":1228,"depth":1597,"text":1229},{"id":1255,"depth":1597,"text":1256},{"id":1282,"depth":1597,"text":1283},{"id":1337,"depth":1592,"text":1338,"children":1612},[1613,1614,1615],{"id":1341,"depth":1597,"text":1342},{"id":1359,"depth":1597,"text":1360},{"id":1425,"depth":1597,"text":1426},{"id":1442,"depth":1592,"text":1443,"children":1617},[1618,1619,1620],{"id":1449,"depth":1597,"text":1450},{"id":1499,"depth":1597,"text":1500},{"id":1517,"depth":1597,"text":1518},{"id":1541,"depth":1592,"text":1542},"Use FlowPick to save online course videos for offline learning and content backup.","md",{},{"icon":105},{"title":102,"description":1622},"iVJMChEwKjAHBbtxJdEYYOoSbEDgiUHt2IfwfY08O90",[1629,1631],{"title":91,"path":92,"stem":93,"description":1630,"icon":94,"children":-1},"Technical architecture details of FlowPick's download engine — segment concurrent download, AES-128 decryption, three-tier write strategy, memory safety management, and progress tracking.",{"title":107,"path":108,"stem":109,"description":1632,"icon":43,"children":-1},"Use FlowPick to save creator content from mainstream video platforms for offline viewing and material collection.",1783158227404]