A Firefox app called “Video DownloadHelpe” is having problems partly due to YouTube changing formats & codecs, leaving many downloaders “high & dry” so can’t “float their boats”.
Seems that one possible problem may be app-needed version of glibc 2.27 and the OS-supplied version of glibc 2.26.
Best way for me to explain this is to include a link to the discussion:
The following is the error message produced by Video DownloadHelper when it fails:
/usr/local/net.downloadhelper.coapp-1.3.0/converter/build/linux/64/ffmpeg: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by /usr/local/net.downloadhelper.coapp-1.3.0/converter/build/linux/64/libavfilter.so.7)
/usr/local/net.downloadhelper.coapp-1.3.0/converter/build/linux/64/ffmpeg: /lib64/libc.so.6: version `GLIBC_2.27' not found (required by /usr/local/net.downloadhelper.coapp-1.3.0/converter/build/linux/64/libavformat.so.58)
/usr/local/net.downloadhelper.coapp-1.3.0/converter/build/linux/64/ffmpeg: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by /usr/local/net.downloadhelper.coapp-1.3.0/converter/build/linux/64/libavcodec.so.58)
So DLH seems to depend on glibc 2.27 and my OpenSuse Leap 15.0 only supplies glibc 2.26.
It’s one of few apps I use that are written in Java (I generally avoid Java apps because they tend to be so unnecessarily big), but I’ve found nothing comparable… the ability to configure single or batch downloads, inspect and selectively download specific YouTube streams which are often hidden from view, support downloading practically any stream from any site, more.