[instagram] Incorrect modified date on saved videos from story/highlight/channel (videos)/reel

[Infinitay]

I noticed that the Instagram module saves the metadata of a regular post correctly such as the date. For example, if a post was made on March 12th, it will correctly save the file's modified date as March 12th. This isn't the case for videos. When Instaloader is saving a video explicitly in the video tab (channel), highlight, or a story, the video's modified date will be the time it was downloaded, not posted. I'm not sure about reels but given the case for the other three scenarios, I would say it's safe to assume reels date saving is also broken.

To clarify:

• A post would be any post on a user's main Instagram page. This includes a photo or video attached in a post. The content's (including a video) modified date matches the post/upload date.
  • https://www.instagram.com/<username>/
  • https://www.instagram.com/p/<post_id>/
• A video would be found within the video tab or channel. The content's modified date here does not match the post/upload date.
  • https://www.instagram.com/<username>/channel/
  • https://www.instagram.com/tv/<post_id>/
• A story would be anything posted on a user's story. The content's video modified date here does not match the post/upload date. A photo does however.
  • https://www.instagram.com/stories/<username>/<story_id>/
• A highlight would be anything saved under a user's highlight. The content's video modified date here does not match the post/upload date. A photo does however.
  • https://www.instagram.com/stories/highlights/<highlight_id>/

Example: gallery-dl -u <username> -p <password> -o extractor.instagram.include="posts,stories,reels,highlights,channel" --verbose https://www.instagram.com/metal__koo/

gallery-dl Version: 1.20.4

[AlttiRi]

Some videos (the notable count) does not have Last-Modified HTTP headers.
However, a preview of a video has it.

It's possible to use for videos Last-Modified header from its preview image.
The related issue: #2135

UPD: Or just set the files' mtime by using the time from API response (date key (-K)), not from Last-Modified when the header is missed.

[mikf]

UPD: Or just set the files' mtime by using the time from API response (date key (-K)), not from Last-Modified when the header is missed.

There's an mtime post processor that can do that (--mtime-from-date)

[Infinitay]

Thank you both for the replies

There's an mtime post processor that can do that (--mtime-from-date)

Is there a reason this isn't default for this situation on Instagram for the sources of content that don't return Last-Modified headers?

Also, is the given mtime post processor not meant to be used all the time? I'm asking because I don't see it listed within the configuration options supplied at https://github.com/mikf/gallery-dl/blob/master/docs/configuration.rst.