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PBUS vs. CPL

8 replies [Last post]
Joey
User offline. Last seen 7 years 32 weeks ago. Offline
Joined: 18 Jan 2008

What is gained by using CPL control for the DVEous instead of PBUS control?

Ed Collins
User offline. Last seen 7 years 32 weeks ago. Offline
Joined: 16 May 2006
[quote="Scott Dailey"]KF 4 to KF 5 Duration 1 Frame. Turns off Keyer Scott[/quote] You don't normally need this last KF. If you turn your key off on KF4 (just by hitting the cut button on that keyer) the key will cut off when the Timeline reaches KF4 - it will not interpolate from KF3 to KF4 thus causing a dissolve. If you need a dissolve off I use keyer opacity - where you might need that extra KF. I also put a recue on the last KF If there is an animation tied to the effect that way I can keep hitting the run button without recalling the effect again. Ed
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Bill D
User offline. Last seen 3 years 10 weeks ago. Offline
Joined: 18 Aug 2005
[quote="Joey"][quote="Scott Dailey"]Hi Joey, I agree with you regarding changing the length of your effects being simpler using Pbus. However, most of the effects I use, i use show after show. I know how long they are and I can program them in my sleep using CPL. if I am using Pbus, i have to go into the Pbus menu to turn triggers on. Like you, I am not Pro Pbus or Pro CPL. I like them both and frequently use both. Bob Ennis posted regarding the developement of CPL quite a while back. You might want to look for that thread. Scott[/quote] Thanks again. I'll look into that old Bob Ennis posting.[/quote] This topic has been discussed on and off for years, doing a search in the old forums would also yield a lot of info.
Joey
User offline. Last seen 7 years 32 weeks ago. Offline
Joined: 18 Jan 2008
[quote="Scott Dailey"]Hi Joey, I agree with you regarding changing the length of your effects being simpler using Pbus. However, most of the effects I use, i use show after show. I know how long they are and I can program them in my sleep using CPL. if I am using Pbus, i have to go into the Pbus menu to turn triggers on. Like you, I am not Pro Pbus or Pro CPL. I like them both and frequently use both. Bob Ennis posted regarding the developement of CPL quite a while back. You might want to look for that thread. Scott[/quote] Thanks again. I'll look into that old Bob Ennis posting.
Scott Dailey
User offline. Last seen 7 years 25 weeks ago. Offline
Joined: 19 Aug 2005
Hi Joey, I agree with you regarding changing the length of your effects being simpler using Pbus. However, most of the effects I use, i use show after show. I know how long they are and I can program them in my sleep using CPL. if I am using Pbus, i have to go into the Pbus menu to turn triggers on. Like you, I am not Pro Pbus or Pro CPL. I like them both and frequently use both. Bob Ennis posted regarding the developement of CPL quite a while back. You might want to look for that thread. Scott
Bill D
User offline. Last seen 3 years 10 weeks ago. Offline
Joined: 18 Aug 2005
Few other big CPL advantages was, that when you moved your effects from one room to another, the emem from switcher always recalled the correct effect (that info was saved with the emem). With P-bus that info is stored in the DVEous. So if you moved stuff to another room or truck you had to re-do all of your P-bus learns. Also when you do a P-bus learn you lose all your keyframes, because you have to do a true learn. On CPL you would just change DVE effect and hit learn mod. On DVEous now I think you can save P-bus info as a file, and Kalypso may allow a learn mod now on P-bus, something 4K can't do. I found it easier to use CPl when building timelines, hated that you couldn't run a DVEous loop though, would need to fire off a P-bus command for that.
Joey
User offline. Last seen 7 years 32 weeks ago. Offline
Joined: 18 Jan 2008
[quote="Scott Dailey"]CPL stands for Control Point Language. It is a Frame Accurate way of controlling the DVEous. It requires that you build switcher timelines controlling the DVEous with knowledge of how long your timeline in the DVEous is. For instance, if you have a Font Fly that is three keyframes long, pauses at KF 2, and each KF is 20 frames long, your switcher timeline might read something like this. KF 1 - Recalls the effect, length 1 field KF 2 - Turns the DVEous keyer on and runs the effect. Since the DVEous should stop at 20 frames, the KF duration should be 19 frames, 1 field KF 3 - Pause, Duration. At least 20 frames (remaining length of the DVEous timeline) KF 4 to KF 5 Duration 1 Frame. Turns off Keyer If KF 2 to 3 is shorter than 19 frames, The DVE will stop before the pause. If it is longer the DVEous will run past the pause in its timeline. (the pause in the DVEous timeline is unnecessary). The switcher has actually "taken control" of the timeline of the DVEous. To experiment with this, you can buld a switcher timeline using CPL to control the DVE. Run this timeline. Now reach over and hit the Run button on the DVE. It will jump to the first KF and run to a Pause or to the End if you have no pause in the timeline. There are advantages to either method depending on what you want to accomplish with your effect. Scott[/quote] I understand the concept timelines on the switcher have to be the same length as the DVEous effect timeline. The problem I find is when you modify the switcher timeline length then you have to modify the DVE timeline to keep things in sync or visa-versa. Isn't it easier (using your Font Fly example) to: KF 1) PBUS recall the DVE effect needed KF 2) PAUSE. Then RUN the switcher timeline with a PBUS trigger 'DVE RUN'. Turn your DVE key 'ON' - The font effects on. KF 3) PAUSE KF 4) PBUS trigger 'DVE RUN' The Font effects off. Now if the amount of time the font flies on-off needs to be modified you are only dealing with the timeline in the DVEous. Also, with the new Kalypso software can't you PBUS recall different DVE effects on other key frames in a timeline. (Something you could do on a DD-35 in 2002) I'm not pro PBUS I'm just trying to find examples why CPL would have an advantage. I guess if you where on a GVG 3000/4000 with a limited key frame pool then conserving key frames would be one advantage. Another advantage to CPL is the ability to run the DVEous timeline in sync with the switcher timeline.
mtiffee
User offline. Last seen 7 years 24 weeks ago. Offline
Joined: 19 Aug 2005
One advantage with CPL is that you can "scrub" your DVE effect using the switcher effect fader bar. With CPL, the DVE can also select sources on the switcher AUX. One disadvantage, the DVE is tied to the switcher timeline so you have to have a timeline playing for the DVE to be playing. Sometimes you just want the DVE to play independent of the switcher timeline, that's when P-Bus is useful. You can setup both at the same time. Some of my effects use CPL for control, some use P-Bus, depending on what I'm trying to do.
Scott Dailey
User offline. Last seen 7 years 25 weeks ago. Offline
Joined: 19 Aug 2005
CPL stands for Control Point Language. It is a Frame Accurate way of controlling the DVEous. It requires that you build switcher timelines controlling the DVEous with knowledge of how long your timeline in the DVEous is. For instance, if you have a Font Fly that is three keyframes long, pauses at KF 2, and each KF is 20 frames long, your switcher timeline might read something like this. KF 1 - Recalls the effect, length 1 field KF 2 - Turns the DVEous keyer on and runs the effect. Since the DVEous should stop at 20 frames, the KF duration should be 19 frames, 1 field KF 3 - Pause, Duration. At least 20 frames (remaining length of the DVEous timeline) KF 4 to KF 5 Duration 1 Frame. Turns off Keyer If KF 2 to 3 is shorter than 19 frames, The DVE will stop before the pause. If it is longer the DVEous will run past the pause in its timeline. (the pause in the DVEous timeline is unnecessary). The switcher has actually "taken control" of the timeline of the DVEous. To experiment with this, you can buld a switcher timeline using CPL to control the DVE. Run this timeline. Now reach over and hit the Run button on the DVE. It will jump to the first KF and run to a Pause or to the End if you have no pause in the timeline. There are advantages to either method depending on what you want to accomplish with your effect. Scott