Hi Carl,
> But the setpts filter is changing the framerate to 60 fps, no?
I am pretty sure it does not, it changes the timebase in use. In a stream
with 1/30 tb and pts values [0,1,2,3,4,5], using a 1/60 tb those pts values
would change to [0,2,4,6,8,10].
> WMP only supports yuv420p, this is
2019-01-31 15:58 GMT+01:00, Hristo Ivanov :
>> Please note that "-vsync 0 -f mp4" is not valid as FFmpeg's
>> mp4 muxer only support cfr.
>
> Yeah, the generated file by this command is not playable by
> the default windows player, but vlc plays the file fine.
WMP only supports yuv420p, this is
2019-01-31 15:58 GMT+01:00, Hristo Ivanov :
>> In this example, it looks as if the input already has 60fps.
>
> The inputs is 30fps, set by the '-r' flag. Maybe the settb filter is
> throwing you off, but it only changes the timebase to 1/60, the
> framerate is kept to 30/1.
But the setpts
Hi Carl,
> In this example, it looks as if the input already has 60fps.
The inputs is 30fps, set by the '-r' flag. Maybe the settb filter is
throwing you off, but it only changes the timebase to 1/60, the framerate
is kept to 30/1.
> Your original email gave the impression that vstack somehow
2019-01-31 12:41 GMT+01:00, Hristo Ivanov :
>> How can I reproduce this (major?) issue with ffmpeg (the application)?
>
> .\ffmpeg.exe -y -loop 1 -r 30 -t 5 -i .\frame.png -filter_complex
> "[0]settb=expr=1/60[tb];[tb]split[s0][s1];[s1]setpts=PTS+1[offset];[s0][offset]vstack[out]"
> -map [out]
Hi Carl.
> How can I reproduce this (major?) issue with ffmpeg (the application)?
.\ffmpeg.exe -y -loop 1 -r 30 -t 5 -i .\frame.png -filter_complex
"[0]settb=expr=1/60[tb];[tb]split[s0][s1];[s1]setpts=PTS+1[offset];[s0][offset]vstack[out]"
-map [out] -c:v h264 -vsync 0 -f mp4 out.mp4
Here is
2019-01-30 16:41 GMT+01:00, Hristo Ivanov :
> Hi.
>
> In my program I have the following filter:
> "
> [in0]format=pix_fmts=yuv420p,scale=-1:540[s0];
> [in1]format=pix_fmts=yuv420p,scale=-1:540[s1];
> [s0][s1]vstack[stacked];
> [stacked]pad=1920:1080:(ow-iw)/2:0[out0]
> "
>
> My problem comes
Hi
I forgot to speak about the timebases in use, and those are important in
this case.
For my two inputs, after decoding, my AVCodecContexts have the following
framerates and timebases:
in0 => 30/1, 1/60
in1 => 359/12, 6/359 // Well this is not exactly 30fps, but close.
The common selected
Hi.
In my program I have the following filter:
"
[in0]format=pix_fmts=yuv420p,scale=-1:540[s0];
[in1]format=pix_fmts=yuv420p,scale=-1:540[s1];
[s0][s1]vstack[stacked];
[stacked]pad=1920:1080:(ow-iw)/2:0[out0]
"
My problem comes from the 'vstack' filter. The stack filters assign the
same
