[Libav-user] Frames are not visually lining up between my code and ffmpeg.exe
simondaniels23 at gmail.com
Tue Jun 26 21:57:24 CEST 2012
I've confirmed this does seem to be a regression.
I ran the same code with the same video on ffmpeg 0.8.3 and 0.11.1 and you
can see the thumbnails generated are not the same. #281 in 0.11.1 lines up
with #221 in 0.8.3.
On Tue, Jun 26, 2012 at 12:22 PM, Simon Daniels <simondaniels23 at gmail.com>wrote:
> Interesting. There was a difference of 30 between the frames that
> ffmpeg.exe output and the result of ->nb_frames.
> Sure enough, ffmpeg.exe with -vsync 0 output 480 frames instead of 510. So
> now how do I get my code's output to match ffmpeg.exe's output? (and
> hopefully skip frames in the process)
> On Tue, Jun 26, 2012 at 12:15 PM, Carl Eugen Hoyos <cehoyos at ag.or.at>wrote:
>> Simon Daniels <simondaniels23 at ...> writes:
>> > frame= 1 fps=0.1 q=6.4 Lq=24.8 size= 0kB time=00:00:00.03
>> > bitrate= 0.0kbits/s dup=30 drop=0
>> I do not completely understand the output (may be a Windows problem),
>> but I suspect if you get "dup=30" away, you should be "lined up".
>> Try -vsync 0 or add -r 25 (or similar) as an output option.
>> Carl Eugen
>> Libav-user mailing list
>> Libav-user at ffmpeg.org
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