Ticket was originally reported in T113532: Transcode isn't happening

If the table shows that the status is "unknown", then i think that means that all the column entries in the transcode table are still at NULL, or not present at all. That means that the Job was not started, or got lost. Since all entries are missing, I suspect that either startJobQueue (which dispatches all the jobs), either was never fired, or that an exception in the init of the first job, cause all subsequent jobs to not be added.

Now all jobs seem to have started, and they all seem to be stuck in some way. I wonder if this indicates an error with the parsing of the original file.

Looks like maintenance/resetTranscodes.php in TMH is what's needed, but presumably only run in small batches rather than all at once?

I have actually been doing this (through the API) in reasonable-sized batches for several days now.

My impression is that these are mainly cases where additional transcode targets were added after the file was uploaded, and the 'new' targets were not added until Dispenser used a bot to purge, in mass, all of the file pages of videos.

It has also happened in the past when files were undeleted, or moved, but I think those bugs were fixed a while back.

I've started a job running requeueTranscodes.php commonswiki --video --missing --throttle which should clean them all up.

resetTranscodes.php is obsolete and will be removed.

In T151199#3115479, @brion wrote:

I've started a job running requeueTranscodes.php commonswiki --video --missing --throttle which should clean them all up.

resetTranscodes.php is obsolete and will be removed.

Status?