好的，日期可能來自 TVDB，但我唯一做的更動是將 MCEBuddy 升級到最新版本。升級前並沒有這個問題，因此我推測是 MCEBuddy 的某些改動導致日期異常。看起來似乎與「時間」有關，因為如果我手動在檔名裡加上時間，就會得到以下結果：
NBC Nightly News With Lester Holt _20191020.mp4 – MCEBuddy 將其標記為 2019-10-19（提早一天，不符）
OriginalBroadcastDateTime: 2019-10-20T00:00:00
RecordedDateTime: 0001-01-01T00:00:00
SeriesPremiereDate: 0001-01-01T00:00:00
CopyProtected: False
SageTV FileID:
SageTV MediaFileID:
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Checking for metadata title and ID correction
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Checking for metadata type correction
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Forcing show type → Series
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Downloading Series details
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Overwrite title from internet → Default
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Skipping downloading Banner file
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Recording Type Show
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Checking TheTVDB
→ Looking for Premiere Year information in text
→ No episode name to match
→ Looking for Premiere Year information in text
→ Found series match on TVDB by Original Broadcast Date. Updated video tags →
Title: NBC Nightly News With Lester Holt
SubTitle: Oct 19 Sat
NBC Nightly News With Lester Holt _20191020_18301900.mp4（僅手動加入 18301900 起訖時間）— 正確標記為「SubTitle: Oct 20 Sun」
OriginalBroadcastDateTime: 2019-10-20T18:30:00
RecordedDateTime: 0001-01-01T00:00:00
SeriesPremiereDate: 0001-01-01T00:00:00
CopyProtected: False
SageTV FileID:
SageTV MediaFileID:
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Checking for metadata title and ID correction
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Checking for metadata type correction
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Forcing show type → Series
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Downloading Series details
2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Overwrite title from internet → Default
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Skipping downloading Banner file
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Recording Type Show
INFORMATION> 2019-10-30T15:32:23 MCEBuddy.MetaData.VideoMetaData → Checking TheTVDB
→ Looking for Premiere Year information in text
→ No episode name to match
→ Looking for Premiere Year information in text
→ Found series match on TVDB by Original Broadcast Date. Updated video tags →
Title: NBC Nightly News With Lester Holt
SubTitle: Oct 20 Sun
MCEBuddy 會因為檔名是否手動帶入時間，而對同一份檔案做出不同處理，即使檔名中的日期正確。
根據支援頁面：
Metadata Extraction and Renaming from Files and Downloading from the Internet
- 若找不到內嵌/抽取的中繼資料，MCEBuddy 會嘗試從檔名解析。目前支援的格式包括：
* SHOWNAME_AIRDATE_AIRTIME.<ext>，其中 AIRDATE 為 YYYYMMDD 格式，AIRTIME 為 HHMMHHMM（起訖）格式（AIRTIME 可省略）。底線可替換為連字號。
文件說 AIRTIME 可省略，但若省略，每日固定日期的節目就會給出錯誤資訊（提早一天）。不確定是否與時區有關。我位於美國東岸（GMT-4），錄影開始時間為 18:30，MCEBuddy 於 19:02 開始處理。看起來像是日期/時間的 bug。
所有每日錄影的日期節目都會發生：
Rachel Maddow Show
Watch What Happens Live
謝謝。