On Tue, May 15, 2018 at 04:06:24PM -0700, Aman Gupta wrote: > From: Aman Gupta <a...@tmm1.net> > > For seekable mpegts streams, duration is calculated from > pts by seeking to the end of the file for a pts and subtracting > the initial pts to compute a duration. > > This can be expensive in terms of added latency during > probe, especially when streaming over a network. This new > option lets you skip the duration calculation, which is useful > when you don't care about the value and want to save some overhead. > > This patch is particularly useful when dealing with live mpegts > streams. Normally such streams are not seekable, so durations > are not calculated. However in my case I am dealing with a seekable > live mpegts stream (networked access to a .ts file which is still > being appended to). > > Signed-off-by: Aman Gupta <a...@tmm1.net> > --- > libavformat/avformat.h | 7 +++++++ > libavformat/options_table.h | 1 + > libavformat/utils.c | 6 ++++++ > 3 files changed, 14 insertions(+)
LGTM it may make sense to design a more generic system in the future where the user can specify what fields she needs (like duration) which fields she could use and which are completely useless. [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB No human being will ever know the Truth, for even if they happen to say it by chance, they would not even known they had done so. -- Xenophanes
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