[MPlayer-users] feature-request: splitting, keyframe-times
gabor
gabor at realtime.sk
Tue Jun 18 00:10:02 CEST 2002
after i have split 12 files :-(,
i found the answers....
so if mencoder -ss 12:23,
then it begins from the first keyframe AFTER 12:23.
and it's a real pain to split :-(
this is one place where virtualdub ( a windows encoder ) shines,
because of it's gui....
in virtualdub if i want to save a part of the file, i simply select
the begin and end at keyframes... i can move the movie forward and back
at the keyframes, and i simply select the begin/end when i need to...
in the case of mencoder i watch the movie, and write down that i want a
part that begins at 12:23.
now i issue mencoder -ss 12:23, and find that it begins at 12:28 (
because there is the first keyframe after 12:23 ).
so i try mencoder -ss 12:22, then -ss 12:21, then 12:20 etc... (or i can
do a binary-search :-)
i know that this works like that because mencoder is a command line
application ( and i like it that way),
i only want to say that maybe this could be implemented in a better way...
if there would be an easier way to select a keyframe....
even a -dumpkeyframetimes option would help, which would write to stdout
( or to a file ) the keyframe-times, like:
"
1
11
22
.
.
12:22
12:23
" or something like that.
thanks,
gabor
p.s: i'm NOT saying that virtualdub is better ( actually i think it's
much worse than mplayer :-) i only try some constructive critique :-)))
gabor wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> ok, i always wanted to know this ...
>
> so let's say i use -sb xyz
>
> now what if xyz is a place between two keyframes?
> will the movie begin at the exact position ( between keyframes ?)?
> or will it begin at a keyframe? which one? prev? next?
>
> btw. maybe it would be a good idea to give constistent name to
> parameters, because -sb, -ss, -endpos.... well.. :-)
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