#45 Captions are not detected

[John Yanefski]

We use MediaInfo in our production environment and have a large number of recent assets with 608 captions that MI is not detecting. We have other tools we can use to the analyze that show the captions in the media, and even dowloaded lastest version of MI and used the CLI but still captions are not detected. I'll add some additional relevant details to the ticket.

[Jerome Martinez]

Which video stream format?

There are 2 cases:

• MPEG Video or AVC: we show 608 only when content is detected, and we parse only few seconds of content (for quicker analysis), the parsed duration can can be tweaked and/or showing 608 stream even if there is no real content detected.
• HEVC: support is currently no implemented, we are looking for sponsors for implementation of such support.

[John Yanefski]

thanks for your fast reply Jerome! Here's a response from our support team:

Looking at the Starz Mezzanines and they all have .MPG file extensions

There is content in the stream, we are able to extract a valid srt with CCextractor

Also I do not think scan duration is at play here because
1) We ran full scan option from CLI
2) We have working assets whose captions fire much later in the stream than the assets that are failing caption detection

[John Yanefski]

wondering if it would be helpful for us to push a piece of sample media up for you to take a peek at?

[Jerome Martinez]

Yes, it would be helpful, easier to speak with real sample files than guessing the issue.
If copyright issues, drop an email to info@mediaarea.net.

[John Yanefski]

Hello Jerome, the team that was running the CLI recognized they weren't running the fullscan correctly w/ ParseSpeed=1 and after resolving that the 608 captions are being detected. So false alarm, sorry about that. Closing the ticket.