How to grep the output of youtube-dl?

Posted by mohtaw on Ask Ubuntu See other posts from Ask Ubuntu or by mohtaw
Published on 2014-05-27T13:53:31Z Indexed on 2014/05/28 4:03 UTC
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grep

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youtube-dl

The normal output for youtube-dl is the following

[download] Downloading video #3 of 33
[youtube] WbWb0u8bJrU: Downloading webpage
[youtube] WbWb0u8bJrU: Downloading video info webpage
[youtube] WbWb0u8bJrU: Extracting video information
[download] Resuming download at byte 107919109
[download] Destination: Lec 6.mp4
[download]  86.2% of 137.18MiB at 48.80KiB/s ETA 06:37

I need to show the first and last monitor the downloading I use the command

 youtube-dl -cit -f 18 URL | grep -e ETA -e "Downloading video #"

It's not working only the first line is working while the last line is not, and I see the download is running as the file size grows

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