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#1050 Blu-ray playlist parsing is slow

Usability
open-accepted
None
5
2017-06-02
2017-05-14
Zathor
No

Thank you very much for your great work.
Sadly I do have a problem with compley Blu-ray Playlists. I have tested several of those. Up to 0.7.94 they did provide the information even if it took ~4 minutes on my machine (SSD, i7-4510U - but tested also other systems). Not sure if the 4 minutes is already a problem but in the end they did open. Easy playlist open in a few seconds.

The 0.7.95 dll however does not provide anything even after > 60min. In the first 20/30 sec there is HDD/CPU activity but afterwards there is no reading of files or CPU activity.

Environment: mediainfo.dll 0.7.95 x86 on Windows 10
Source: main movie playlist of a 3D Blu-ray (here bdmv\playlist\00801.mpls). The mail playlist consists of 82 video segments.
Here are the details from eac3to:

1) 00801.mpls, 1:44:18
[1537+1541+1545+1549+1553+1557+1561+1565+1569+1573+1577+1581+1585+1589+1593+1597+1601+1605+1609+1613+1617+1621+1625+1629+1633+1637+1641+1645+1649+1653+1657+1661+1665+1669+1681+1685+1689+1693+1697+1701+1705+1709+1713+1717+1721+1725+1729+1733+1749+1757+1761+1765+1769+1773+1777+1781+1785+1789+1997+1797+1801+1805+1809+1813+1817+1821+1825+1829+1833+1837+1845+1853+1857+1861+1865+1869+1873+1877+1883+1887+1897+1891+1895].m2ts

  • Chapters, 32 chapters
  • h264/AVC (left eye), 1080p24 /1.001 (16:9)
  • h264/MVC (right eye), 1080p24 /1.001 (16:9)
  • TrueHD, English, multi-channel, 48kHz
  • AC3, English, stereo, 48kHz
  • E-AC3, Italian, multi-channel, 48kHz
  • E-AC3, German, multi-channel, 48kHz
  • AC3, Turkish, multi-channel, 48kHz

M2TS, 2 video tracks, 5 audio tracks, 6 subtitle tracks, 1:44:14, 24p /1.001
1: Chapters, 32 chapters
2: h264/AVC (left eye), 1080p24 /1.001 (16:9)
3: h264/MVC (right eye), 1080p24 /1.001 (16:9)
4: TrueHD/AC3, English, 7.1 channels, 48kHz
(embedded: AC3, 5.1 channels, 640kbps, 48kHz)
5: AC3 Surround, English, 2.0 channels, 320kbps, 48kHz
6: E-AC3, Italian, 7.1 channels, 896kbps, 48kHz
(core: AC3, 5.1 channels, 512kbps, 48kHz)
7: E-AC3, German, 7.1 channels, 896kbps, 48kHz
(core: AC3, 5.1 channels, 512kbps, 48kHz)
8: AC3, Turkish, 5.1 channels, 640kbps, 48kHz
9: Subtitle (PGS), English
10: Subtitle (PGS), English
11: Subtitle (PGS), Italian
12: Subtitle (PGS), German
13: Subtitle (PGS), Turkish
14: Subtitle (PGS), Turkish

I just tried it with the MediaInfo GUI 0.7.94 which after 10 minutes still does not respond. Interestingly the pure dll does provide the information when tested with my own application / wrapper.

I am happy to provide more information. Sadly I am not able to upload a full Blu-ray and hope that you have one. If the MPLS file alone helps I can upload that one.

Thanks in any case!

Discussion

  • Zathor

    Zathor - 2017-06-02

    Thank you very much, 0.7.96 is now back to the "normal" ~4 minutes.

     
  • Jerome Martinez

    Jerome Martinez - 2017-06-02

    Not sure if the 4 minutes is already a problem

    It is a problem, but not the one we fixed.
    I suggest to keep this ticket open as a request for Bluray parsing speedup.

     
  • Jerome Martinez

    Jerome Martinez - 2017-06-02
    • summary: Blu-ray playlist parsing broken --> Blu-ray playlist parsing is slow
    • status: open --> open-accepted
    • assigned_to: Jerome Martinez
    • Group: Crash --> Usability
     

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