iphone - OSStatus error - 12780 when invoking insertTimeRange:ofTrack:atTime:error: of AVMutableCompositionTrack for the second time -

-

first of have love forum, helped me many time. have problem , couldn't find answer anywhere first question here.

my problem this:

i have video represented avplayeritem, user can edit video start time using cutbefore button cuts video left of slider

the method responsible cutting video following:

- (void)cutbeforeaction {   avmutablecomposition *composition = [avmutablecomposition composition];  // audio , video tracks of video avmutablecompositiontrack *compositionvideotrack = [composition addmutabletrackwithmediatype:avmediatypevideo preferredtrackid:kcmpersistenttrackid_invalid]; avmutablecompositiontrack *compositionaudiotrack = [composition addmutabletrackwithmediatype:avmediatypeaudio preferredtrackid:kcmpersistenttrackid_invalid];  // calculate new duration cmtime currstarttime = _player.currentitem.currenttime; cmtime endtime = _player.currentitem.duration; cmtimerange range = cmtimerangefromtimetotime(currstarttime, endtime);  // insert new duration tracks nserror *error = nil; [compositionvideotrack inserttimerange:range                                 oftrack:[[_player.currentitem.asset trackswithmediatype:avmediatypevideo] objectatindex:0]                                 attime:kcmtimezero                                  error:&error];  [compositionaudiotrack inserttimerange:range                                 oftrack:[[_player.currentitem.asset trackswithmediatype:avmediatypeaudio] objectatindex:0]                                 attime:kcmtimezero                                  error:&error]; // create new avplayeritem new composition avplayeritem *item = [avplayeritem playeritemwithasset:composition]; [self setplayeritem:item]; [_player replacecurrentitemwithplayeritem:item];  // change player location beginning of video [_player seektotime:cmtimemakewithseconds(0, 1)]; [self synctimelabel]; [self syncscrubber];

}

when running - (void)cutbefore method firs time works fine, when run second time (the video has been edited once) the

[compositionvideotrack inserttimerange:range                             oftrack:[[_player.currentitem.asset trackswithmediatype:avmediatypevideo] objectatindex:0]                             attime:kcmtimezero                              error:&error];

and

[compositionaudiotrack inserttimerange:range                             oftrack:[[_player.currentitem.asset trackswithmediatype:avmediatypeaudio] objectatindex:0]                             attime:kcmtimezero                              error:&error];

methods returns following error:

the operation couldn’t completed. (osstatus error -12780.)

i tried error code means found practically nothing.

thanks help

i found workaround issue, seems using method inserttimerange:oftrack:attime:error: avmutablecomposition's track input track causing error, did saving initial asset (which wasn't instance of avmutablecomposition instance of avasset), , using track input inserttimerange:oftrack:attime:error:


Comments

Post a Comment

Popular posts from this blog

Cursor error with postgresql, pgpool and php -

-
hey, struggling bit determine exact cause of error has been popping in our release environment. there not seem dealing particular error on google. this error message getting: sqlstate[34000]: invalid cursor name: 7 error: portal "" not exist the error pops when using pdo prepared statements. this setup our release environment: pgpool 3.0.1 (the postgresql backend in streaming replication mode!) php 5.3.5 postgresql 9.0 edit: architecture 64bit. the same error not manifest in our test environment (edit: forgot mention, standard test environment uses postgresql 9.0 without pgpool). thus, led suspect pgpool @ least partly suspect. does know probable causes error are? edit: ok, here example of kind of code causes error. $sql = 'select * '; $sql .= 'from "mytable" "mystuff" '; $sql .= 'where "mytable"."status" = 1 '; $sql .= 'and "mytable"."mytableid" = :table...
Read more

delphi - ESC/P programming! -

-
why need use because printers using tprinter prints weird hieroglyph @ beginning of printable area. my problem if send commands, nothing happens. esc e (#27 #69) - sending escape sequence didn't work expected. removed first letter , rest of string made bold. eg. hello -> ello . after changed esc e esc (#27 #69 #27), worked fine. example managed figure out, but... trying select character table "esc t n" (#27 #116 n), make "õäöü" work. command doesn't work. nothing happens! , command supported esc/p, esc/p 2 , 9-pin esc/p, should work fine. manual can found here . if has ever needed use esc/p commands maybe 1 can shed light how work them! thanks in advance! edit: in previous post asked more or less same question though answers how did send commands printer. (i'll change question there according answers!) i accepted ken's answer, because claimed way transferred commands wasn't best , got work escape command. problem after t...
Read more

c++ - error: use of deleted function -

-
i've been working on c++ code friend has written , following error have never seen before when compiling gcc4.6: error: use of deleted function ‘gamefsm_<std::array<c, 2ul> >::hdealt::hdealt()’ implicitly deleted because default definition ill-formed: uninitialized non-static const member ‘const h_t floppokergamefsm_<std::array<c, 2ul> >::hdealt::h’ edit: comes part of code using boost msm: boost webpage edit2: there no = delete() used anywhere in sourcecode. generally speaking, error mean? should looking when type of error occurs? i don't think other answers mentioning =deleted; syntax correct. error message says default constructor has been deleted implicitly . says why: class contains non-static, const variable, not initialized default ctor. class x { const int x; }; since x::x const , must initialized -- default ctor wouldn't initialize (because it's pod type). therefore, default ctor, need define 1 (and must ...
Read more