max filesize limit doesn't work for some urls

[fireflyHunter]

During this case:
youtube-dl --max-filesize 500m -o 914973423549468672 http://youtu.be/mMzDtZ-gYIc?a

It will keep downloading when exceed the max filesize and download all file parts. (every file parts exceed the size limit)

However most of urls works just fine.

$youtube-dl --version
2018.04.16

[dstftw]

>youtube-dl.exe http://youtu.be/mMzDtZ-gYIc?a --max-filesize 500m
[youtube] mMzDtZ-gYIc: Downloading webpage
[youtube] mMzDtZ-gYIc: Downloading video info webpage
[youtube] mMzDtZ-gYIc: Extracting video information
[youtube] mMzDtZ-gYIc: Downloading MPD manifest
[youtube] mMzDtZ-gYIc: Downloading MPD manifest
[download] File is larger than max-filesize (2612791290 bytes > 524288000 bytes). Aborting.

[fireflyHunter]

I am not sure how you make it work, for me its still not working in both windows or ubuntu:

Windows:
C:\Users\hao>youtube-dl http://youtu.be/mMzDtZ-gYIc?a --max-filesize 500m
[youtube] mMzDtZ-gYIc: Downloading webpage
[youtube] mMzDtZ-gYIc: Downloading video info webpage
[youtube] mMzDtZ-gYIc: Extracting video information
[youtube] mMzDtZ-gYIc: Downloading MPD manifest
[youtube] mMzDtZ-gYIc: Downloading MPD manifest
[dashsegments] Total fragments: 1483
[download] Destination: Tour de France 2013 - Stage 2 (part 1)-mMzDtZ-gYIc.f137.mp4
[download] 1.8% of ~3.65GiB at 2.91MiB/s ETA 19:11

Linux:
$ youtube-dl http://youtu.be/mMzDtZ-gYIc?a --max-filesize 500m
[youtube] mMzDtZ-gYIc: Downloading webpage
[youtube] mMzDtZ-gYIc: Downloading video info webpage
[youtube] mMzDtZ-gYIc: Extracting video information
[youtube] mMzDtZ-gYIc: Downloading MPD manifest
[youtube] mMzDtZ-gYIc: Downloading MPD manifest
[dashsegments] Total fragments: 1483
[download] Destination: Tour de France 2013 - Stage 2 (part 1)-mMzDtZ-gYIc.f137.mp4
[download] 7.4% of ~3.68GiB at 3.83MiB/s ETA 20:11

[dstftw]

--max-filesize only works for plain HTTP downloads.

[fireflyHunter]

The url does starts with http, I try to change it to https but still couldn't get the max-filesize working.
It would be great if you could elaborate on why this url is not a plain HTTP download or how can I fix this for more urls like this one.

[dstftw]

Cause it's segmented DASH. You can't "fix" it. It will only work for plain single file downloads that report correct size of the whole file in Content-Length HTTP header.
What you may do is to filter based on filesize meta field using --match-filter. Though this metadata may not be available either.