Hi all,
I have a mp4 video which is in VFR, and also a few negative frames
before I cut it from another video. So the PTS of this video looks like
this
pts_time=-1.812278
pts_time=-1.223744
pts_time=-1.201211
pts_time=-0.899378
pts_time=-0.882033
pts_time=0.000000
pts_time=0.113378
pts_time=0.129322
pts_time=0.146244
pts_time=0.211711
pts_time=0.243133
pts_time=0.390133
pts_time=0.406111
Now, I want to add the timestamp to the video itself, I used this command
fmpeg -nostdin -i input.mp4 -c:v libx264 -profile:v baseline -vf
"drawtext=x=(w-(max_glyph_w*13))/2:
y=H-h/10:fontcolor=white:fontsize=h/14:box=1:boxcolor=0x000000AA:text='%{pts\\:hms}'"
-y -vsync 0 output.mp4
I used vsync 0 because I didn't want to lose any of those frames, and it
looked fine in terms of number of the frames.
The problem is, when I use a media player to play the output video, I
can see some of frames felt into the same timestamp. What I mean is the
frame itself has the correct PTS as they had been drawn, however the
timestamp of video isn't correct. If I get the PTS of the output video,
I see this
pts_time=0.000000
pts_time=0.000000
pts_time=0.251053
pts_time=0.251053
pts_time=0.251054
pts_time=0.251054
pts_time=0.502106
pts_time=0.502106
pts_time=1.004213
pts_time=1.004213
pts_time=1.004213
pts_time=1.004213
pts_time=1.004213
pts_time=1.004214
Hope I am clear and any help is greatly appreciated!
Thanks!
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