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doc/ffmpeg,ffmpeg-formats: avoid to mention ffmpeg options from formats.texi

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Also extends documentation for timestamp related ffmpeg options, in order
to make more apparent the fact that muxer processing may change the
timestamps values.
This commit is contained in:
Stefano Sabatini 2013-03-19 00:09:14 +01:00
parent 2bac6b6f5e
commit 18f43de964
2 changed files with 11 additions and 6 deletions
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5
doc/ffmpeg-formats.texi
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@ -151,11 +151,6 @@ been without shifting.
Also note that this affects only leading negative timestamps, and not
non-monotonic negative timestamps.
When avoid_negative_ts is used together with copyts, vsync or async then
avoid_negative_ts is applied last. This is neccessary so that containers
which do not support negative timestamps wont get any and can be used
with vsync/async and copyts.
@end table
@c man end FORMAT OPTIONS

12
doc/ffmpeg.texi
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@ -902,6 +902,10 @@ Chooses between 1 and 2 depending on muxer capabilities. This is the
default method.
@end table
Note that the timestamps may be further modified by the muxer, after this.
For example, in the case that the format option @option{avoid_negative_ts}
is enabled.
With -map you can select from which stream the timestamps should be
taken. You can leave either video or audio unchanged and sync the
remaining stream(s) to the unchanged one.
@ -911,6 +915,11 @@ Audio sync method. "Stretches/squeezes" the audio stream to match the timestamps
the parameter is the maximum samples per second by which the audio is changed.
-async 1 is a special case where only the start of the audio stream is corrected
without any later correction.
Note that the timestamps may be further modified by the muxer, after this.
For example, in the case that the format option @option{avoid_negative_ts}
is enabled.
This option has been deprecated. Use the @code{aresample} audio filter instead.
@item -copyts
@ -919,7 +928,8 @@ to sanitize them. In particular, do not remove the initial start time
offset value.
Note that, depending on the @option{vsync} option or on specific muxer
processing, the output timestamps may mismatch with the input
processing (e.g. in case the format option @option{avoid_negative_ts}
is enabled) the output timestamps may mismatch with the input
timestamps even when this option is selected.
@item -copytb @var{mode}