patrick_
14th September 2009, 19:52
I just noticed that MPC-HC (64-bit) and MPC (32-bit) + FFDShow (+ Haali), reproduce videos at the wrong framerate - or at least state the wrong framerate in the video's properties.
They reproduce the mp4 (h.264) at: FPS / Frames * (Frames - 1)
So they reproduce a 20 second PAL video at: 25 / 500 * 499 = 24.95fps
The bug isn't really important, because such a small difference is unnoticable, and the longer the clip, the smaller the difference.
Also, I didn't test if the bug is in the properties, or in the reproduction - but sure it's in one of them.
To confirm that it isn't a bug in the video: MediaInfo and VLC Player report the correct framerate. The .mp4s tested have been created by muxing a .264 (from x264) with and without an .aac into a mp4 with mp4box.
The version of either x264 and mp4box is irrelevant.
Maybe I should have reported it somewhere else, but because the bug affects more than one program, I thought that this would be a usefull place ;)
ffdshow-tryout 3020
MPC 6.4.9.1
MPC-HC x64 1.3.1249.0
Windows Vista x64
They reproduce the mp4 (h.264) at: FPS / Frames * (Frames - 1)
So they reproduce a 20 second PAL video at: 25 / 500 * 499 = 24.95fps
The bug isn't really important, because such a small difference is unnoticable, and the longer the clip, the smaller the difference.
Also, I didn't test if the bug is in the properties, or in the reproduction - but sure it's in one of them.
To confirm that it isn't a bug in the video: MediaInfo and VLC Player report the correct framerate. The .mp4s tested have been created by muxing a .264 (from x264) with and without an .aac into a mp4 with mp4box.
The version of either x264 and mp4box is irrelevant.
Maybe I should have reported it somewhere else, but because the bug affects more than one program, I thought that this would be a usefull place ;)
ffdshow-tryout 3020
MPC 6.4.9.1
MPC-HC x64 1.3.1249.0
Windows Vista x64