ping
2016.02.17. 14:13 keltezéssel, Bodecs Bela írta:
2016.02.16. 10:42 keltezéssel, Nicolas George írta:
L'octidi 28 pluviôse, an CCXXIV, Bodecs Bela a écrit :
Do you have any suggestion for me what to do now?
Please give me a hint where to find this bug or should I open a trac
ticket
for it?
I already told you: find out exactly WHY the result is different. I
suggest
you use this kind of test case:
ffprobe -show_packets -show_streams input.ts
cat input.ts | ffprobe -show_packets -show_streams -
When we know why, we can discuss how.
Regards,
I have checked the code where and when duration filled and made some
reasoning about it.
Duration value for input files has been populated some time after
opening. (estimate_timings function in utils.c) And never again
corrected or called this function..
So, if early in processing there is no duration info, it remains empty.
When input is not a seekable file but a not-seekable stream, the only
chance to get a duration info when the stream itself contains info
about this value. (eg. flv metadata, mp4-moov)
But mpegts format does not contain this info. So the only moment when
duration calculatable is when we finish the reading. I think
contoniously updating the duration value after each packet would not
be a good idea.
(cur_dts is updated is AVStream->info struct)
So reading a file via pipe or reading hls stream via http it is normal
that duration value remains empty.
thus, I think to handle the cases when duration value is not
populated, this is not a bug fix but a reasonable solution for these
cases.
I agree with you that we should not "measure" our-own the pts values
but I could not find any existing/available data member to have this
info.
best regars,
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