How can I rewrite pts?

[AalisaM]

Hello, I'm new to ffmpeg and I have a silly question.
I need to read mp4 video and rewrite frames pts data.
Is there any way to achieve it with your lib?

I came with one solution, but it's not good:
I may read frames, save it as png and then write a new mp4 from my png with any settings I want.
Is there another way, which is more elegant?

[bramp]

This library just wraps the ffmpeg command line. If the command line can do it, then this library can.

There seems to be a few solutions on Google when u search for this problem:
https://superuser.com/questions/1159056/ffmpeg-recreate-timestamps-without-reencoding
https://gist.github.com/mukunm/5c338a375585c12a3679ccc4d85276d5

Once you find a set of command line args that work for you, I can suggest how to use the library.

[AalisaM]

@bramp , Thank you, I've came to one of your solutions, which is

• ffmpeg -i source.mp4 -map 0:v -vcodec copy -bsf:v h264_mp4toannexb source-video.h264
• ffmpeg -fflags +genpts -r 60 -i source-video.h264 -vcodec copy output.mp4

Could you please give me a hint how to use your wrapper for these two commands?