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Videos: Make use of the video decoding

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This commit is contained in:
Samantaz Fox
2024-07-03 18:22:32 +02:00
parent 56a7488161
commit ec8b7916fa
3 changed files with 65 additions and 86 deletions
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65
src/invidious/videos.cr
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@@ -1,3 +1,5 @@
private DECRYPT_FUNCTION = IV::DecryptFunction.new
enum VideoType
Video
Livestream
@@ -98,20 +100,47 @@ struct Video
# Methods for parsing streaming data
def convert_url(fmt)
if cfr = fmt["signatureCipher"]?.try { |h| HTTP::Params.parse(h.as_s) }
sp = cfr["sp"]
url = URI.parse(cfr["url"])
params = url.query_params
LOGGER.debug("Videos: Decoding '#{cfr}'")
unsig = DECRYPT_FUNCTION.decrypt_signature(cfr["s"])
params[sp] = unsig if unsig
else
url = URI.parse(fmt["url"].as_s)
params = url.query_params
end
n = DECRYPT_FUNCTION.decrypt_nsig(params["n"])
params["n"] = n if n
params["host"] = url.host.not_nil!
if region = self.info["region"]?.try &.as_s
params["region"] = region
end
url.query_params = params
LOGGER.trace("Videos: new url is '#{url}'")
return url.to_s
rescue ex
LOGGER.debug("Videos: Error when parsing video URL")
LOGGER.trace(ex.inspect_with_backtrace)
return ""
end
def fmt_stream
return @fmt_stream.as(Array(Hash(String, JSON::Any))) if @fmt_stream
fmt_stream = info["streamingData"]?.try &.["formats"]?.try &.as_a.map &.as_h || [] of Hash(String, JSON::Any)
fmt_stream.each do |fmt|
if s = (fmt["cipher"]? || fmt["signatureCipher"]?).try { |h| HTTP::Params.parse(h.as_s) }
s.each do |k, v|
fmt[k] = JSON::Any.new(v)
end
fmt["url"] = JSON::Any.new("#{fmt["url"]}#{DECRYPT_FUNCTION.decrypt_signature(fmt)}")
end
fmt_stream = info.dig?("streamingData", "formats")
.try &.as_a.map &.as_h || [] of Hash(String, JSON::Any)
fmt["url"] = JSON::Any.new("#{fmt["url"]}&host=#{URI.parse(fmt["url"].as_s).host}")
fmt["url"] = JSON::Any.new("#{fmt["url"]}&region=#{self.info["region"]}") if self.info["region"]?
fmt_stream.each do |fmt|
fmt["url"] = JSON::Any.new(self.convert_url(fmt))
end
fmt_stream.sort_by! { |f| f["width"]?.try &.as_i || 0 }
@@ -121,21 +150,17 @@ struct Video
def adaptive_fmts
return @adaptive_fmts.as(Array(Hash(String, JSON::Any))) if @adaptive_fmts
fmt_stream = info["streamingData"]?.try &.["adaptiveFormats"]?.try &.as_a.map &.as_h || [] of Hash(String, JSON::Any)
fmt_stream.each do |fmt|
if s = (fmt["cipher"]? || fmt["signatureCipher"]?).try { |h| HTTP::Params.parse(h.as_s) }
s.each do |k, v|
fmt[k] = JSON::Any.new(v)
end
fmt["url"] = JSON::Any.new("#{fmt["url"]}#{DECRYPT_FUNCTION.decrypt_signature(fmt)}")
end
fmt["url"] = JSON::Any.new("#{fmt["url"]}&host=#{URI.parse(fmt["url"].as_s).host}")
fmt["url"] = JSON::Any.new("#{fmt["url"]}&region=#{self.info["region"]}") if self.info["region"]?
fmt_stream = info.dig("streamingData", "adaptiveFormats")
.try &.as_a.map &.as_h || [] of Hash(String, JSON::Any)
fmt_stream.each do |fmt|
fmt["url"] = JSON::Any.new(self.convert_url(fmt))
end
fmt_stream.sort_by! { |f| f["width"]?.try &.as_i || 0 }
@adaptive_fmts = fmt_stream
return @adaptive_fmts.as(Array(Hash(String, JSON::Any)))
end