Core Changes: - Fix SearchView to use start_frame/end_frame directly (no time*fps conversion) - Add hard_delete support to delete_trace API - VideoPlayer: Main timeline + Mark system foundation - Proxy: Add local routes for auth, media, identity-matches, cluster-results - Add .gitignore to exclude build artifacts and dependencies Design Documents: - Multi-track Mark system design (.opencode/plans/) - Video editing positioning standards research Files Modified: - src/views/SearchView.vue: Frame positioning, ensureMinDuration (240 frames) - src/views/PeopleView.vue: batchDeleteGroups with hard_delete - src/api/index.ts: delete_trace with hard_delete body - src/components/VideoPlayer.vue: Timeline + Mark UI - src-tauri/src/proxy.rs: New local routes - AGENTS.md: Update documentation
3.7 KiB
3.7 KiB
影片 Seek 異常問題
問題描述
影片檔案: Gamma 8-Director Chih-Lin Yang Shares His Experience:楊智麟導演經驗分享.mp4
UUID: d3f9ae8e471a1fc4d47022c66091b920
大小: 219.0 MB
時長: 298.67 秒(約 5 分鐘)
症狀:
- 3 分鐘後 seek 異常
- 異常行為:
- 回到影片開頭
- 跳到影片結尾
診斷結果
ffprobe 檢測錯誤
[h264 @ 0x7ad048e00] Invalid NAL unit size (49912 > 22668).
[h264 @ 0x7ad048a80] missing picture in access unit with size 22672
[h264 @ 0x7ad048a80] Error splitting the input into NAL units.
影片結構分析
| 項目 | 數值 | 狀態 |
|---|---|---|
| Codec | H.264 High Profile | ✅ |
| 解析度 | 1920x1080 | ✅ |
| 幀率 | 29.97 fps (30000/1001) | ✅ |
| Keyframe 間距 | ~28 幀 (~1 秒) | ✅ |
| moov atom 位置 | 28 bytes | ✅ 正確(在開頭) |
| stss seek table | 存在 | ✅ |
| NAL units | 損壞 | ❌ |
Range Requests 測試
Core API Range requests 運作正常:
curl -I -H "Range: bytes=150000000-150001000" ...
HTTP/1.1 206 Partial Content
content-range: bytes 150000000-150001000/229638144
根本原因
影片檔案本身有損壞的 NAL units,非 Studio 或 Core API 問題。
瀏覽器的 H.264 解碼器在遇到損壞的 NAL units 時會:
- 無法正確解碼目標幀
- 嘔試從最近的 keyframe 恢復
- 若恢復失敗,跳回開頭或結尾
解決方案
方案 1: 重新封裝(Remux)
不重新編碼,僅重新打包容器:
ffmpeg -i "/Users/accusys/momentry/var/sftpgo/data/demo/Gamma 8-Director Chih-Lin Yang Shares His Experience:楊智麟導演經驗分享.mp4" \
-c copy \
"/Users/accusys/momentry/var/sftpgo/data/demo/Gamma 8-Director Chih-Lin Yang Shares His Experience_fixed.mp4"
優點:快速、不損失畫質 缺點:可能無法修復損壞的幀
方案 2: 重新編碼(Transcode)
完整重新編碼:
ffmpeg -i "/Users/accusys/momentry/var/sftpgo/data/demo/Gamma 8-Director Chih-Lin Yang Shares His Experience:楊智麟導演經驗分享.mp4" \
-c:v libx264 -crf 18 \
-c:a aac -b:a 128k \
"/Users/accusys/momentry/var/sftpgo/data/demo/Gamma 8-Director Chih-Lin Yang Shares His Experience_reencoded.mp4"
優點:完整修復損壞的幀 缺點:耗時、些微畫質損失
方案 3: 重新註冊
修復後需重新註冊到系統:
# 取消註冊舊檔案
curl -X POST http://localhost:8888/api/v1/unregister \
-H "Content-Type: application/json" \
-d '{"file_uuid": "d3f9ae8e471a1fc4d47022c66091b920"}'
# 註冊新檔案
curl -X POST http://localhost:8888/api/v1/files/register \
-H "Content-Type: application/json" \
-d '{"file_path": "/path/to/fixed_video.mp4"}'
預防措施
上傳時驗證
可在檔案註冊時加入驗證:
ffprobe -v error -count_frames -select_streams v:0 \
-show_entries stream=codec_name \
-of default=noprint_wrappers=1 input.mp4
若有錯誤輸出,標記檔案為「需要檢查」或自動嘗試修復。
定期檢查腳本
#!/bin/bash
# check_videos.sh
for file in /path/to/videos/*.mp4; do
errors=$(ffprobe -v error -count_frames "$file" 2>&1 | grep -i "invalid\|error\|corrupt")
if [ -n "$errors" ]; then
echo "ISSUE: $file"
echo "$errors"
fi
done
其他影片測試
測試其他影片均正常,確認問題僅限於此特定檔案。
狀態
- 問題診斷完成
- 嘗試 remux 修復
- 嘗試 transcode 修復(若 remux 失敗)
- 重新註冊檔案
- 驗證 seek 功能正常
建立日期: 2026-07-22 相關文件:
/Users/accusys/momentry_studio/docs/core-api-usage.md/Users/accusys/momentry_studio/docs/core-api-fix-video-range.md