Occasionally Jaksta fails to download specific YouTube videos. It works most of the time, but certain videos fail everytime I try (for example: https://www.youtube.com/watch?v=phUhvp812Mo). Jaksta appears to proceed (I can see the progress as if it is normal) through the lengthy download process but ends with a error and the file ends with zero length. I don't have this problem when using "YouTube by Click" free software.
Is there anything that I can do to help Jaksta succeed?
Thanks for reporting.
MP4 opus audio stream failure - Caused by the attempt to mux the downloaded audio codec opus into an MP4 container. MP4 does not support opus so extra conversion is required.
WEBM VP9 video stream failure - VP9 is experimental in version of ffmpeg we distribute and is failing to mux.
Will handle this in the next release.
In the mean time select an MP4 H264/AAC stream and this will download and mux correctly. This is most commonly what appears first in the list of available streams from youtube.