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| author | Michael Niedermayer <michaelni@gmx.at> | 2013-01-21 16:47:34 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-01-22 01:38:55 +0100 |
| commit | 2338af0fb48e600a24ad740b0d996ca7274e8c18 (patch) | |
| tree | 050507610236301c7357eb79da6ff37498d21209 | |
| parent | e4eebc2da9da886e1bdf87d29e9a4c5b55111036 (diff) | |
| download | ffmpeg-2338af0fb48e600a24ad740b0d996ca7274e8c18.tar.gz | |
doc: document aresample:first_pts
Documentation copied from asyncts, the options are supposed to do
the same thing. If not please submit a testcase where they differ
so we can fix it.
Disscussed-with: saste on IRC
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | doc/ffmpeg-resampler.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/ffmpeg-resampler.texi b/doc/ffmpeg-resampler.texi index 4fb5771687..e20279525d 100644 --- a/doc/ffmpeg-resampler.texi +++ b/doc/ffmpeg-resampler.texi @@ -172,6 +172,14 @@ may be stretched or squeezed for each second. Default value is 0, thus no compensation is applied to make the samples match the audio timestamps. +@item first_pts +For swr only, assume the first pts should be this value. The time unit is 1 / sample rate. +This allows for padding/trimming at the start of stream. By default, no +assumption is made about the first frame's expected pts, so no padding or +trimming is done. For example, this could be set to 0 to pad the beginning with +silence if an audio stream starts after the video stream or to trim any samples +with a negative pts due to encoder delay. + @item min_comp For swr only, set the minimum difference between timestamps and audio data (in seconds) to trigger stretching/squeezing/filling or trimming of the |