04-14-2011
Quote:
Originally Posted by
rob171171
I am looking for a way to measure performance metrics of streaming audio/video from a contecnt server, e.g. YouTube for example. Im keen to see if I can look at duration it took for contecnt to download.
I know from the output of wget's log file you can see duration a url is downloaded in.
However I need to get the duration it takes for the streaming content.
Thanks
A file's a file's a file. Things like Youtube and the like work real hard to obscure where the actual URL comes from, though. The only even slightly reliable way I've found to figure that out is to set up your own proxy server, configure your web browser to use it, and watch the URLs it downloads for anything relevant. And even that sometimes doesn't work because when you try and download it by hand, you won't have the same cookies, etc.
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GCAP.1(1p) User Contributed Perl Documentation GCAP.1(1p)
NAME
gcap - Youtube closed caption downloader
SYNOPSIS
gcap [-i] [-t] [-r <regexp>] [--proxy=<addr> | --no-proxy]
[--help] <url> | <video_id>
DESCRIPTION
gcap is a command line tool for downloading Youtube closed captions. The downloaded closed captions are saved in SubRip (srt) file format.
The srt files are saved as "$videoid_$langid.srt" by default.
OPTIONS
--help
Print help and exit.
--version
Print version and exit.
-q, --quiet
Be quiet.
-i, --interactive
Open the interactive prompt which can be used to select the items. gcap selects all items by default. See also "INTERACTIVE PROMPT".
-t, --title
Parse video title and use it in the output filename(s) instead of video ID. The default is no.
-r, --regexp=arg
Cleanup video title using the specified arg regular expression. The default is "/(w|s)/g".
--proxy arg
Use arg for HTTP proxy, e.g. "http://foo:1234". Overrides the http_proxy environment setting.
--no-proxy
Disable use of HTTP proxy. Overrides both "--proxy" and http_proxy environment settings.
INTERACTIVE PROMPT
Use the "--interactive" switch to open the prompt. Note that gcap uses (as of 0.1.0) the Umph::Prompt module for this. Once the prompt
opens, type "help" to get a list of commands available to the prompt.
EXAMPLES
gcap 0QRO3gKj3qw
gcap "http://www.youtube.com/watch?v=0QRO3gKj3qw"
Both yield the same results.
gcap -ti 0QRO3gKj3qw
Same as above two but use video title in the filename and choose which of the closed captions should be downloaded.
EXIT STATUS
Exits 0 on success, otherwise 1.
FILES
$HOME/.gcaprc, for example:
echo "--interactive" >> ~/.gcaprc
NOTES
Availability
The following error message produced by gcap (or the XML::DOM module) typically indicates that the video does not have any closed
captions available for it (URL omitted for brewity):
Couldn't parsefile [...] with LWP: no element found at line 1,
column 0, byte -1 at [...]/XML/Parser.pm [...]
http_proxy
gcap depends on XML::DOM which uses LWP::UserAgent to download the data. Note that LWP::UserAgent reads http_proxy environment setting.
e.g.:
env http_proxy=http://foo:1234 gcap video_id
WWW
<http://gcap.googlecode.com/>
<http://repo.or.cz/w/gcap.git>
AUTHOR
Toni Gundogdu <legatvs at sign cpan org>
perl v5.12.4 2011-11-15 GCAP.1(1p)