May 2015 - Pro-apps-dev - lists.apple.com

Re: Start frame number of a clip
by Darrin Cardani 04 May '15

04 May '15

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Re: Start frame number of a clip
by Peter Litwinowicz 04 May '15

04 May '15

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Re: Start frame number of a clip
by Darrin Cardani 04 May '15

04 May '15

> On May 4, 2015, at 9:16 AM, Lyndon Hill <lyndon(a)tiliam.com> wrote: > > Hi Darrin, > >> But I believe that many other developers have been successfully using -startTimeForEffect: and -durationForEffect: in the meantime. > > That doesn’t work for me: I need to know the start frame number relative to the clip the filter is being applied to. -startTimeForEffect gives the frame number relative to the timeline. > > My filter needs to calculate some weighty frame analysis for all frames in the clip. If I know the start and end frames I can re-use analysis that covers frames in that range whenever trim is changed. Without knowing start and end frames my filter will have to recompute everything each time the clip is trimmed. The user experience will be like running in mud. In that case, please file a bug with a very clear description of what you’re trying to do, what’s missing or working correctly, and what you think it should work like. Looking through the current set of bugs for FxPlug, I see one (which I filed in 2014) about something that appears to be related to this issue. I see no bugs originating between October 2009 (when the linked discussion happened) and October 2010 about it (after I asked the poster to file a bug about it), nor do I find any others searching for just key words like “in point”, “FxTimingAPI” etc. that were filed by 3rd parties about this issue. So if you don’t file them, they won’t get fixed. (I have received some filed recently about changes between 10.1.4 and 10.2, so thanks for those!) Darrin _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Start frame number of a clip
by Lyndon Hill 04 May '15

04 May '15

Hi Darrin, > But I believe that many other developers have been successfully using -startTimeForEffect: and -durationForEffect: in the meantime. That doesn’t work for me: I need to know the start frame number relative to the clip the filter is being applied to. -startTimeForEffect gives the frame number relative to the timeline. My filter needs to calculate some weighty frame analysis for all frames in the clip. If I know the start and end frames I can re-use analysis that covers frames in that range whenever trim is changed. Without knowing start and end frames my filter will have to recompute everything each time the clip is trimmed. The user experience will be like running in mud. thanks Lyndon Hill _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Start frame number of a clip
by Peter Litwinowicz 04 May '15

04 May '15

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Re: Start frame number of a clip
by Darrin Cardani 04 May '15

04 May '15

> On May 4, 2015, at 8:50 AM, Lyndon Hill <lyndon(a)tiliam.com> wrote: > > Hi Darrin, > >> Which version of which app are you seeing the problem in? > > I’m currently using FCPX 10.1.4. > > Was the original issue in the mailing list post resolved ? It appears there were a number of issues discussed in that post, and that they were about FCP7. (We released FCPX in 2011.) But I believe that many other developers have been successfully using -startTimeForEffect: and -durationForEffect: in the meantime. Darrin _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Start frame number of a clip
by Lyndon Hill 04 May '15

04 May '15

Hi Darrin, > Which version of which app are you seeing the problem in? I’m currently using FCPX 10.1.4. Was the original issue in the mailing list post resolved ? thanks Lyndon Hill _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Start frame number of a clip
by Darrin Cardani 04 May '15

04 May '15

Lyndon, Which version of which app are you seeing the problem in? We have some reports of issues with FCPX 10.2 in this area, and I suspect this is another manifestation of the same issue. However, I’d like to be sure. If you could supply the above info, that would be helpful. Darrin > On May 3, 2015, at 6:38 AM, Lyndon Hill <lyndon(a)tiliam.com> wrote: > > Hi > > I’m trying to get the start frame and end frame numbers from a clip that my filter is working on, on the timeline. > > double start = [timingApi startTimeForEffect:self]; > double duration = [timingApi durationForEffect:self]; > > However start always gives the start with reference to the timeline and doesn’t handle trimmed start. > > Just in case my explanation is not clear; say I start a new project, add a 100 frame clip to the timeline and trim the first 20 frames. The code above gives a start of 0 and duration 80. I need to know that the start is now at frame 20. > > There was discussion about this feature on the ML back in 2009, see http://lists.apple.com/archives/pro-apps-dev/2009/Oct/msg00005.html > > I guess it could have been implemented in FxTimingAPI_v3 but I can’t find the reference documentation for this. The FxPlug SDK documentation (https://developer.apple.com/library/mac/documentation/AppleApplications/Con…) has many protocols that are not documented/linked. > > thanks in advance > > Lyndon Hill > > > > > > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/pro-apps-dev/dcardani%40apple.com > > This email sent to dcardani(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Start frame number of a clip
by Lyndon Hill 03 May '15

03 May '15

Hi I’m trying to get the start frame and end frame numbers from a clip that my filter is working on, on the timeline. double start = [timingApi startTimeForEffect:self]; double duration = [timingApi durationForEffect:self]; However start always gives the start with reference to the timeline and doesn’t handle trimmed start. Just in case my explanation is not clear; say I start a new project, add a 100 frame clip to the timeline and trim the first 20 frames. The code above gives a start of 0 and duration 80. I need to know that the start is now at frame 20. There was discussion about this feature on the ML back in 2009, see http://lists.apple.com/archives/pro-apps-dev/2009/Oct/msg00005.html I guess it could have been implemented in FxTimingAPI_v3 but I can’t find the reference documentation for this. The FxPlug SDK documentation (https://developer.apple.com/library/mac/documentation/AppleApplications/Con…) has many protocols that are not documented/linked. thanks in advance Lyndon Hill _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Motion 5.0.3 kFxPropertyKey_PixelIndependent issue?
by Darrin Cardani 01 May '15

01 May '15

Paul, Please file a bug. Without more details, it's hard to know whether this is a reasonable result for your filter. The Picture-In-Picture filter is definitely not pixel independent, so setting that flag should cause it to render incorrectly. The Brightness template should be pixel independent, but I seem to recall that it also has this issue, so it's probably an indication of a bug. And Stoney, if you're still on the list, forward the bug number for the bug mentioned in the below post. I don't recall seeing this one come by, so I'm really surprised that you mentioned it that long ago and it's not addressed yet. If you can give me the bug number, I'll investigate and raise its priority. Darrin On Apr 16, 2012, at 12:29 PM, Paul Young wrote: I'm seeing a problem in my plugins under Motion 5.0.3 where the output image is shifted up and to the right (essentially double-counting the lower-left origin -> center offset) when kFxPropertyKey_PixelIndependent is set to YES in properties. These plugins all use software rendering, I haven't checked the issue with hardware rendering. I'm able to replicate it in the Picture-In-Picture sample app if I set kFxPropertyKey_PixelIndependent to YES. A google search suggests a similar issue may have shown up before, in Motion 4, if that's any help. http://lists.apple.com/archives/pro-apps-dev/2009/Aug/msg00092.html Turning kFxPropertyKey_PixelIndependent off is easy enough, but I wanted to pass this along to see if others were having a similar issue or had other ideas on a fix. Thanks, paul _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (mailto:Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/dcardani%40apple.com This email sent to mailto:dcardani@apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (mailto:Pro-apps-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/sb.list%40sb.org This email sent to mailto:sb.list@sb.org _______________________________________________ Do not post admin requests to the list. They will be ignored. Pro-apps-dev mailing list (Pro-apps-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/pro-apps-dev/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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