Menu

#576 incorrect fps and scan method on some MP4 files

Incorrect_result
open-accepted
6
2011-11-09
2011-04-30
g-s0192
No

On the attached video created by camera Sanyo HD1000 / Sanyo HD2000 / Sanyo VPC-FH1, the video framerate (fps) and scan is not reported correctly by MediaInfo. All videos created by these models are reporting incorrectly.

I’m expecting 1920x1080, scan: interlaced, fps: 29.97.
Mediainfo reports 1920x1080, scan: progressive: fps: 59.94.

A variety of other programs, such as multiAVCHD rely on MediaInfo, thus processing these files incorrectly. Workaround for me was to re-mux the MP4 video using avidemux and force the fps to 29.97, which then, the fps is reported by MediaInfo correctly, but scan is still reported as progressive.

As an aside, tsMuxeR reports this info correctly.
FFMpeg is however also struggling to get the expected fps number.

ATTACHMENT: Sample video file 1.7MB - https://rapidshare.com/files/459905597/send_to_mediainfo.MP4

Discussion

  • Jerome Martinez

    Jerome Martinez - 2011-04-30

    Accepted.

    Warning: non-paid bugs are set to low priority, I don't know when I have time to handle it.
    If you desire to accelerate the development, don't hesitate to contact me for a quotation.

     
  • Jerome Martinez

    Jerome Martinez - 2011-04-30
    • priority: 5 --> 6
    • status: open --> open-accepted
     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09

    Sorry, I lost the file, and the rapidshare link is no more valid. Could you upload again the file?

     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09
    • status: open-accepted --> pending-accepted
     
  • g-s0192

    g-s0192 - 2011-11-09

    Hello, here's another file 2MB in size, also giving same results:
    https://rapidshare.com/files/22151197/SANY5021.MP4

    THANKS!

     
  • g-s0192

    g-s0192 - 2011-11-09
    • status: pending-accepted --> open-accepted
     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09
    • status: open-accepted --> pending-works-for-me
     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09

    Wow... I made you wait 6 months, but you reply in 6 minutes :)

    frame rate seems to be OK (29.97) with latest version (0.7.50)
    Scan is still progressive, but his seems to be the reality (frame_mbs_only_flag set to 1, and 1 slice per frame, 122 frames)

    So currently I consider the ticket closed with latest version, please reopen the ticket if there is still an issue from your point of view.

     
  • g-s0192

    g-s0192 - 2011-11-09
    • status: pending-works-for-me --> open-works-for-me
     
  • g-s0192

    g-s0192 - 2011-11-09

    Thanks heaps for that. OK. I'll check out the latest version and see if the tools are picking it up correct and they convert it fine. It might also be incorrect way that the Sanyo is recording the information. As the camera is definitely in 29.97 interlaced mode, and by watching it frame-by-frame it appears that it is interlaced, and i definitely get 59.94 fields per second... I'll report back, in mean time, please close this issue! THANK YOU.

     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09

    I looked at the file again, and it is only 122 progressive frames from my point of view (not classic glitches of interlaced content). Rigth file? No transcoding?

     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09
    • status: open-works-for-me --> pending-works-for-me
     
  • g-s0192

    g-s0192 - 2011-11-09

    OOOOOPPPS... sorry, I sent you a 640x480, 29.97fps, progressive... that's why the file was so small!!!

    My apologies for that. Here's smallest file I can find in the proper 1920x1080, scan: interlaced, fps: 29.97: https://rapidshare.com/files/2009462676/SANY5649.MP4

    So sorry for the confusion!!!

     
  • g-s0192

    g-s0192 - 2011-11-09
    • status: pending-works-for-me --> open-works-for-me
     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09
    • status: open-works-for-me --> open-accepted
     
  • Jerome Martinez

    Jerome Martinez - 2011-11-09

    This one is better :).

    There is 1 field per MP4 "frame", I am not sure sure this is the expected packetization. I'll check.

     

Log in to post a comment.