On Wed, Feb 15, 2017 at 10:24:17AM +0100, wm4 wrote: > From: Anton Khirnov <an...@khirnov.net> > > This will be useful in the following commit, after which the muxer > timebase is not always available when encoding. > > This merges Libav commit 3e265ca. It was previously skipped. > > There is a minor change with setting the mux_timebase field only after > the muxer's write_header function has been called, because it can > readjust the timebase. > > Includes a minor merge fix by Mark Thompson, and > > avconv: Move rescale to stream timebase before monotonisation > > also by Mark Thompson <s...@jkqxz.net>. > > Signed-off-by: wm4 <nfx...@googlemail.com> > --- > ffmpeg.c | 39 ++++++++++++++++++++++----------------- > ffmpeg.h | 2 ++ > 2 files changed, 24 insertions(+), 17 deletions(-)
Tests run against master with cb6f1be864c64cfa1d48a5d3eadbecbc771402e7 9148290d71648b0c4295485e59f6541892041a6b (taken from your git) This causes a difference in: ./ffmpeg -i ~/tickets/1242/sample.mkv -vcodec copy -copyts -acodec copy -sn test.ts Ive looked at the difference and it seems the first timestamp differs 0, -3780, 0, 0, 3056, 0x00f4902c, S=1, 1, 0x00e000e0 vs. 0, -3754, 0, 0, 3056, 0x00f4902c, S=1, 1, 0x00e000e0 3754 is closer to 90000/24000/1001 3780 is closer to the first timestamp from the source file i dont really know what is better with ./ffmpeg -i ~/tickets/2143/input.mpg -vcodec copy -acodec copy -ss 7 -t 7 test.mpg this causes larger timestamp differences and a shower of warnings like Non-monotonous DTS in output stream 0:0; previous: 483483, current: 483483; changing to 483484. This may result in incorrect timestamps in the output file. previously no such warnings where generated with ./ffmpeg -i ~/tickets/2424/aspect_bug.mkv -vcodec copy -acodec copy -t 1 test.mp4 Again the first timestamps change and here also the printed fps value changes from 24 to 24.01 theres also a differene with Starship_Troopers.vob which i belive i reported previously and this also has different timestamps: ./ffmpeg -i ~/tickets/3547/sat_uplink_signalloss.ts -vcodec copy -acodec copy test.asf interrestingly this is specific to asf output, other formats seem not to show this Thats all i could find for the 2 commits with some light analysis. I Hope it helps [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The misfortune of the wise is better than the prosperity of the fool. -- Epicurus
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