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${ noResults }
4 Commits (f7b46d86dee8fe3c086ed541211a139952ed96f9)
Author | SHA1 | Message | Date |
---|---|---|---|
Michael Niedermayer | 4abc411b97 |
nutenc: choose for non audio streams a timebase with finer resolution.
While a 25 fps stream can in general store frame durations in 1/25 units, this is not true for the timestamps. For example a 25fps and a 25000/1001 fps stream when they are stored together might have a matching 0 timestamp point but when for example a chapter from this is cut the new start is no longer aligned. The issue gets MUCH worse when the streams are lower fps, like 1 or 2 fps. This commit thus makes the muxer choose a multiple of the framerate as timebase that is at least about 20 micro seconds precise Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
12 years ago |
Michael Niedermayer | e3fb5bc147 |
nut: store and read the r_frame_rate
With this, when we use a finer timebase than neccessary to store durations the demuxer still knows what the original timebase was. Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
12 years ago |
Michael Niedermayer | 3a621c9d99 |
nutenc: Support writing an index
The seek test improves in accuracy Fixes Ticket877 Signed-off-by: Michael Niedermayer <michaelni@gmx.at> |
13 years ago |
Steven Robertson | 82ecae8a70 |
lavfi: add alphaextract and alphamerge filters
These filters are designed for storing and transmitting video sequences with alpha using higher-efficiency codecs such as x264 which don't natively support an alpha channel. 'alphaextract' takes an input stream with an alpha channel and returns a video containing just the alpha component as a grayscale value; 'alphamerge' takes an RGB or YUV stream and adds an alpha channel recovered from a second grayscale stream. Signed-off-by: Steven Robertson <steven@strobe.cc> Signed-off-by: Stefano Sabatini <stefasab@gmail.com> |
13 years ago |