[YouTube] Cannot get streams of playlists with only shorts about newpipeextractor

[AudricV]

I also found that currently, if we use a continuation to request the first page, regular video items and continuations are returned for these playlists! The new playlist header isn't returned in this case though.

Here is the protobuf schema for playlists continuations:

syntax = "proto3";

message PlaylistContinuation {
  PlaylistContinuationParameters parameters = 80226972;
}

message PlaylistContinuationParameters {
  string browseId = 2;
  string continuationProperties = 3; // A PlaylistContinuationProperties message encoded as a Base64 string
  string playlistId = 35;
}

message PlaylistContinuationProperties {
  int32 requestCount = 1;
  // The playlist response starts at 0 if this field is omitted
  string playlistIndexParameterProtoBase64 = 15; // An optional string "PT:" with a PlaylistIndexParameter message encoded in Base64 appended at the end
  ContentFiltersParameters contentFilters = 104;
}

message PlaylistIndexParameter {
  int32 index = 1; // The index cannot be 0 and should be a 100 multiplier (YouTube backends return that requests contain an invalid argument otherwise)
}

// Parameters hideUnavailableVideos and showOnlyVideos can be used at the same time, but no videos would be returned in this case
message ContentFiltersParameters {
  int32 hideUnavailableVideos = 1;
  int32 showOnlyVideos = 2;
  int32 showOnlyShorts = 3; // Parameter works but doesn't return a Shorts UI as of 08/12/23 (American English date format)
}

I suspect that this workaround will stop working if YouTube start to provide continuations to these playlists.

[Theta-Dev]

Using the mobile client is a solution at the moment, but since this is a A/B test, I dont think that will work permanently. If YouTube wants their crippled shorts UI, they are going to implement it everywhere.

I guess we need to support reel item renderers for playlists, even though we'll lose a lot of metadata.