On 09/26/2020 08:42 AM, Peter wrote:
Hi,
I have a file MPEG-PS, AVC264 with audio code G711u.
It does contain absolute timestamp in each frame i.e I can say when exactly each second of this
video was shot.
I want to do the following:
I'm still exploring/learning the structures in program streams, but I'll give you my current notions
and perhaps someone will confirm/refute what I write and we'll both learn, eh?
1. Extract absolute timestamps from the video
Absolute timestamps don't exist in an MPEG-PS. The best that can be determined is frame order and
frame rate from which absolute timestamps can be calculated.
2. Convert the file to MP4 h264 with some more web friendlier audio codec i.e
aac.
You want to remux video and transcode audio.
3. Play the files on web using Nginx and Video.js and be able to search by
absolute timestamp.
I have no knowledge of these.
I am aware that most likely I will need to store absolute timestamp in separate files as I cannot
put them in mp4.
Any help/feedback is welcome :-)
Thanks,
Peter
--
Ignorance can be cured. The cure is called "learning".
Arrogance can be cured. The cure is called "humbling".
Curing arrogant ignorance requires more.
It requires a personality transplant and is best accomplished after the subject has been removed
from public office.
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