Add a "--get-size" option

[sebma]

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[debug] System config: []
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Hi, can you add a "--get-size" option ?

[dstftw]

No, use filesize metafield from format dictionary of JSON output.

[sebma]

How do I print the filesize from the command line using JSON output ?

[dstftw]

E.g. parse --dump-json with jq.

[sebma]

Here is what I get with jq

youtube-dl -f18 -j http://www.youtube.com/watch?v=29S1T7RNHGM | jq '.filesize'
null

Can you be more precise ?

[Hrxn]

I don't have jq right now, but you can test inputs/outputs here: https://jqplay.org/

[yan12125]

YouTube does not provide all filesize information for all formats. In this example only DASH formats have the size information.

$ youtube-dl -f 133 -j http://www.youtube.com/watch?v=29S1T7RNHGM | jq .filesize 
140629453

[sebma]

Hi,

If "YouTube does not provide all filesize information for all formats", why not use the "Content-Length" found in the HTTP headers to implement the --get-size option, example:

curl -sI "$(youtube-dl -g -f 18 http://www.youtube.com/watch?v=29S1T7RNHGM)" | awk '/Content-Length:/{printf "%.2f MiB\n", $2/2^20}'

[yan12125]

Content-Length is not available before you really starts the download. Data reported by -j are extracted from web pages and API responses.

[sebma]

Why not use a curl subprocess or libcurl to extract Content-Length ?

[yan12125]

A reason is that querying the filesize for all formats takes a long time. This can be a feature request if the additional time cost is tolerable. If you're interested in only one format - just do the curl call.

[sebma]

"querying the filesize for all formats" does not make any sense according to me.
I am only interested in only one format.

Why not include the curl or libcurl call in youtube-dl instead ?

[yan12125]

It's possible with pure Python. This ticket is actually a duplicate of #190 and #6. Sorry for not noticing previous ones at first.

[sebma]

The problem is that this issue and issue #190 are both closed :(

Shall I subscribe to issue #6 to be kept up to date ?

[yan12125]

Shall I subscript to issue #6 to be kept up to date ?

yes.