问题
I am using the Google APIS explorer's youtube.playlistItems.list.
I've set the part parameter to "snippet", the maxResults to 10, the playlistId to UUzoVCacndDCfGDf41P-z0iA which is the uploads id for the JSConf YouTube channel (the channelId is UCzoVCacndDCfGDf41P-z0iA), but for some reason I don't see some of the recent videos uploaded on the channel. I assume maybe because the videos are not returned in a particular order?... if so, how can I can make sure that I get the most recent uploaded videos that corresponds to a specific maxResults value that I specify?
Update: the API works just fine with other channels & the videos are even returned in order which is what I would expect...
回答1:
Please note the fact that the PlaylistItems endpoint queried for the uploads list of a channel produces an items list which is ordered by upload date. But the items themselves contains publishedAt datetime properties attached.
publishedAt (datetime)
The date and time that the video was published. Note that this time might be different than the time that the video was uploaded. For example, if a video is uploaded as a private video and then made public at a later time, this property will specify the time that the video was made public.
Then the output obtained is fact correct:
$ youtube-data \
--playlist=UUzoVCacndDCfGDf41P-z0iA --videos \
--max-results=20 --page=- \
--table --relative-date
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If you want to obtain the latest published say 10 videos of a particular channel you should query the Search endpoint instead, passing to it proper parameters: channelId=..., maxResults=10 and order=date.
The output then would look like the one below:
$ youtube-data \
--channel=UCzoVCacndDCfGDf41P-z0iA --videos \
--max-results=10 --page=- \
--table
_0ij8vY2gzE 2019-06-27T02:44:21.000Z Music and Art with ML by Monica Dincu...
Vk9bPDaZELQ 2019-06-26T12:10:11.000Z Block, unblock, block! How ad blocker...
ZMZMMuXRFcE 2019-06-26T02:14:07.000Z Web Components and the AOM by Léonie ...
GhRE3rML9t4 2019-06-25T14:14:55.000Z CSS Houdini & The Future of Styling b...
JybbgAz3meQ 2019-06-24T22:54:47.000Z How to Calculate the Phase of the Moo...
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g3jwd0kAIDU 2019-06-24T22:54:47.000Z Improving React Native Performance in...
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el9fhSbby5E 2019-06-24T22:54:46.000Z JavaScript is AsynchroWAT? - Crystal ...
NdKAUXAvt8E 2019-06-24T22:54:46.000Z The Teenage Mutant Ninja Turtle Guide...
来源：https://stackoverflow.com/questions/56788894/problem-getting-the-most-recent-uploaded-videos-of-a-channel-using-the-youtube-d