X-Git-Url: https://git.cinelerra-gg.org/git/?p=goodguy%2Fcin-manual-latex.git;a=blobdiff_plain;f=parts%2FFaq.tex;fp=parts%2FFaq.tex;h=f8d1efc78ea98aea8a24100adc16c679c0e0b320;hp=0000000000000000000000000000000000000000;hb=56cefd5c10e72713a328249dbe2c86cbe354cda6;hpb=632396df6c0d37a8392bb5aa9847717b6729c235 diff --git a/parts/Faq.tex b/parts/Faq.tex new file mode 100644 index 0000000..f8d1efc --- /dev/null +++ b/parts/Faq.tex @@ -0,0 +1,69 @@ +\chapter{FAQ, Known Problems and Workarounds}% +\label{cha:faq_problems_workarounds} +\index{workarounds} + +Some workarounds for issues and a few known problems that have not yet been fixed, are described here. + +\paragraph{Workaround for access to modifiable text files when using AppImage.} This includes +such files as FFmpeg video or audio files, fonts that you want to add for usage in the Title +plugin, icons that you wish to modify, and any other text file for customization. +To get access, first extract the files from the AppImage, find the files to add, edit, or modify, and then run the extracted binary following the steps shown here. +\begin{itemize} + \item /path-to-appimage/CinGG-20220131-x86\_64.AppImage -{}-appimage-extract + \item edit or add the files you want to modify in the \textit{bin} or \textit{lib} subdirecctory + \item /path-to-appimage/squashfs-root/usr/bin/cin +\end{itemize} +For more detailed information on working with AppImages, see \ref{sub:managing_appimage}. + +\paragraph{Workaround for the \textit{alpha channel not working as intended when using an EDL} inserted as a reference or when an EDL is nested.} +Using the Projector on the EDL within a Master Project follow these next steps. +\begin{itemize} + \item Open your EDL with \textit{Open EDL} by using the MMB (Middle Mouse Button) on the Nested edit on its track. + \item In this nested EDL, insert a new Video track below the last video track. + \item Add the Alpha plugin to the new Video track for the entire length of the nested EDL. + \item Change the value of the Alpha to 0.00. The Alpha Plugin may be disabled or left enabled. + \item Close the EDL. +\end{itemize} This solves the alpha channel not working as expected and the Master Project now looks correct. + +\paragraph{Workaround for using a transition, like Dissolve, between 2 edits with the plugin Motion51.} +In this case, the Motion51 plugin and the Dissolve transition are not seen during the transition phase +and is stopped at the cut point between 2 edits. +The left edit's plugin should be in effect until the end of that clip and should include the +dissolve. Instead, there is a jump inside the dissolve, as if the plugin does not exist. There are +2 possible workarounds. For example, extend the Motion51 plugin to cover both clips rather than +having a separate plugin for each clip. Or another workaround is to use two tracks and have the +plugin cover the cut point and use a Fade auto instead of the Dissolve transition. + +\paragraph{The Fade auto in certain circumstances produces an unwanted black flash.} +When you insert an effect on an empty track the fade fades as if it were on a black background; +it interprets the alpha as black where there is transparency, which is what produces the fade. +So the problem in the case of text is that the letters appear as a black flash briefly in the first +few frames, then goes back to transparent, then the fade starts normally with the white color. +To avoid the unwanted effect produced by the fade over black (because there is no content) leave +the fade in/out of the effect at 0 and use the fade line to perform the intended results to +avoid the problem with the alpha channel. The same problem occurs when using transparent PNG +images with fade video transitions and can be resolved in the same manner. +However this workaround can be quite tedious and complicated if you want to fade many snippets of text +and transparent PNGs on the same track, with always the same video transition filter set to the same +duration. + +Just a side note here. Fade in/out in the Title plugin works fine if there is a clip/image above +the plugin in the same track without an alpha channel but not if there is no clip/image. +And the Transition effect works fine when there is a transition between two clips/images without +an alpha channel. + +\paragraph{Audio tracks align with no video track, and in working with Mixers.} + +The use of \texttt{Open Mixers} always requires the existence of a video track. See \nameref{ssub:but_use_only_first_audio} We cannot act on audio tracks only, for example to align them. A workaround to get the audio tracks aligned would be: + +\begin{enumerate} + \item You create/open the \textit{Mixer Viewer} with \texttt{Open Mixers} in Resources window for the Videos with Audio. It will create, in the timeline, one Video track and two Audio tracks for each Media (Video/Audio), and its Mixer Viewer. + \item Add a new Video track (\texttt{Shift+T} shortcut) and two Audio tracks (\texttt{t} shortcut) for your audio (Left+Right channels?) without video: you are adding an empty Video track because \texttt{Align Mixers} feature needed a video track. + \item Move the Video track down until it is on the top of the two Audio + tracks. + \item Insert your Audio into the two Audio tracks in the usual way. + \item Open/Create a Mixer Viewer from \texttt{Menu $\rightarrow$ Window $\rightarrow$ Mixer\dots $\rightarrow$ Mixer Viewer} (\texttt{Shift+M}). + \item Assign that Mixer Viewer (a white frame is shown when selected) to the one Video tracks (empty) and two Audio tracks, of the \#2 point, pressing the arrow icons (\texttt{Mixer}) you find on the Patchbay on the left of the Main window. When assigned, you must to see the 3 arrow (for 1video + 2Audio) are pointing up. + \item Now, you can use \texttt{Align Mixers} feature as usual. See \nameref{sec:audio_video_sync} +\end{enumerate} +