[FFmpeg-user] Conversion from WMV to M2V - Lost Frame Problem

Andrew Arthur ikrananka at hotmail.com
Tue Nov 18 23:35:47 CET 2014

I have been inspecting the mpeg properties using the mpeg plug-in to
VirtualDub.  If I check the original wmv file it shows it as having 1037
frames and a length of 43.208.  If I convert the file using TMPGenc and
check it in VirtualDub it shows 1037 frames and a length of gives 43.208,
i.e. the same as the wmv file.  However, the output from ffmpeg shows in
VirtualDub as being 1036 frames and a length of 43.167 (the length is
1036/1037th of the original length).

So, it really does seem to be losing a frame in the conversion.


-----Original Message-----
From: ffmpeg-user-bounces at ffmpeg.org [mailto:ffmpeg-user-bounces at ffmpeg.org]
On Behalf Of Carl Eugen Hoyos
Sent: November-18-14 3:07 PM
To: ffmpeg-user at ffmpeg.org
Subject: Re: [FFmpeg-user] Conversion from WMV to M2V - Lost Frame Problem

Andrew Arthur <ikrananka <at> hotmail.com> writes:

> The input.wmv file has 1037 frames, however the output m2v file only 
> has 1036 frames:

> frame= 1037 fps= 71 q=3.3 Lsize=   42093kB time=00:00:43.16
> bitrate=7988.2kbits/

Why do you think that the output file has 1036 frames?
The console output you provided suggests it has 1037 frames.

Carl Eugen

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