Facebook Live video is shaky

[davidmcginn]

Please follow the guide below

• You will be asked some questions and requested to provide some information, please read them carefully and answer honestly
• Put an x into all the boxes [ ] relevant to your issue (like this: [x])
• Use the Preview tab to see what your issue will actually look like

---

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.05.01. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.05.01

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

---

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--prefer-ffmpeg', '--postprocessor-args', '-movflags +faststart', '--no-progress', '-o', '/home/dave/daveapp-production/current/public/dave_s.mp4', '-f', '(mp4)[height<=?1080][fps<=?30][vcodec^=avc1]+(m4a)/(mp4)+(m4a)/(mp4)', 'https://www.facebook.com/lilush.yaghmuryan/videos/10212955557216875/']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.05.01
[debug] Python version 3.5.2 (CPython) - Linux-4.15.12-x86_64-linode105-x86_64-with-Ubuntu-16.04-xenial
[debug] exe versions: ffmpeg 3.4-1, ffprobe 3.4-1
[debug] Proxy map: {}
[facebook] 10212955557216875: Downloading webpage
[debug] Invoking downloader on 'https://scontent-atl3-1.xx.fbcdn.net/v/t42.9040-29/10000000_368820446855091_6854417335084646400_n.mp4?_nc_cat=0&efg=eyJ2ZW5jb2RlX3RhZyI6ImRhc2hfdjRfaHE0X2ZyYWdfMl92aWRlb19mcm9tX2xpdmVfZHZyX3YyIn0=&oh=5f288bee8f175437e9668559b592b26c&oe=5AEB5232'
[download] Destination: /home/dave/daveapp-production/current/public/dave_s.f368820423521760v.mp4
[download] Download completed
[debug] Invoking downloader on 'https://scontent-atl3-1.xx.fbcdn.net/v/t42.1790-29/10000000_789261747931256_6662785051207401472_n.mp4?_nc_cat=0&efg=eyJ2ZW5jb2RlX3RhZyI6ImRhc2hfdjRfaHExX2ZyYWdfMl9hdWRpb19mcm9tX2xpdmVfZHZyX3YyIn0=&oh=e43a22589b8d0f68142a125f43f889bb&oe=5AEB67DE'
[download] Destination: /home/dave/daveapp-production/current/public/dave_s.mp4.f789261701264594ad
[download] Download completed
[ffmpeg] Merging formats into "/home/dave/daveapp-production/current/public/dave_s.mp4"
[debug] ffmpeg command line: ffmpeg -y -i file:/home/dave/daveapp-production/current/public/dave_s.f368820423521760v.mp4 -i file:/home/dave/daveapp-production/current/public/dave_s.mp4.f789261701264594ad -c copy -map 0:v:0 -map 1:a:0 -movflags +faststart file:/home/dave/daveapp-production/current/public/dave_s.temp.mp4
Deleting original file /home/dave/daveapp-production/current/public/dave_s.f368820423521760v.mp4 (pass -k to keep)
Deleting original file /home/dave/daveapp-production/current/public/dave_s.mp4.f789261701264594ad (pass -k to keep)
<end of log>

---

Facebook Live video is shaky

I'm having a problem with a specific Facebook Live video which when downloaded is shaky:

Video: https://www.facebook.com/lilush.yaghmuryan/videos/10212955557216875/

This is the command I'm using to download it:

~/.local/bin/youtube-dl --prefer-ffmpeg --postprocessor-args '-movflags +faststart' --no-progress -o './fb_live_shaky.mp4' -f '(mp4)[height<=?1080][fps<=?30][vcodec^=avc1]+(m4a)/(mp4)+(m4a)/(mp4)' 'https://www.facebook.com/lilush.yaghmuryan/videos/10212955557216875/'

It would appear to be something to do with the format (-f) that I'm passing, because downloading with the following is okay:

~/.local/bin/youtube-dl --prefer-ffmpeg --postprocessor-args '-movflags +faststart' --no-progress -o './fb_live_okay.mp4' -f '(mp4)[height<=?1080][fps<=?30]+(m4a)[abr<=?200]/(mp4)[height<=?1080][fps<=?30]/(mp4)' 'https://www.facebook.com/lilush.yaghmuryan/videos/10212955557216875/'

I'm not very familiar with youtube-dl, so finding it hard to figure out which part of the format is the problem specifically. We use the first format ((mp4)[height<=?1080][fps<=?30][vcodec^=avc1]+(m4a)/(mp4)+(m4a)/(mp4)) for all Facebook videos and don't generally have problems, so I'm wondering if it's a bug in the current version or if we need to start passing a different format depending on the type of Facebook video.

FWIW I've tried a different Facebook Live video and did not have any problems.

Thanks

[dstftw]

Recect VLC and mpv both play file downloaded with your command line just fine without any visible issues.
Also when specifying output template never hardcode the extensions.