To change the image file after you’ve already added it to the Marker inspector, click Choose, then select a different image file. To use a different frame in the source file, enter a different timecode value in the viewer that appears at the bottom of the Marker inspector.įile: Uses an image file that you select via the window that appears.
Select an image to be displayed at the marker point by choosing an option from the Image pop-up menu:įrame: Uses the frame on which the marker is placed as the display image. When viewing the transcoded file, you can click the URL to open a web browser and view a website. In the Marker inspector, click the Type pop-up menu, then choose either Chapter or Podcast.Įnter a name for the marker in the Name field.ĭuring playback of a transcoded file, chapter marker names are displayed on Apple playback devices, in QuickTime Player, and in DVD menus. Select a job in the Compressor batch area, then select a marker in the preview area. The only difference is that a viewer can navigate directly to a chapter marker but can’t navigate to a podcast marker. Note: A podcast can have both chapter markers and podcast markers.
QuickTime Movie (see QuickTime Movie settings in Compressor) MPEG-4, when configured for audio podcasting (see MPEG-4 settings in Compressor) MPEG-2 (see MPEG-2 setting in Compressor) H.264 for Apple Devices (see Apple Devices settings in Compressor) Markers can be output when using settings based on the following formats: Podcast markers appear purple in the Compressor preview area.
However, podcast marker names do not appear in the slideshow, and users can’t navigate to a podcast marker in the transcoded file. Podcast markers are usually used to provide a slideshow (with URLs) for users to view when playing audio podcasts. Podcast markers: Like chapter markers, podcast markers can have artwork and a URL assigned to them. Edit markers appear red in the Compressor preview area. They are commonly used by compression artists to force an I-frame at an edit point to ensure higher image quality at that moment in the video. Compression markers appear blue in the Compressor preview area.Įdit markers: Function identically to compression markers.
Add them to a video if a section appears to have lower image quality than the surrounding frames. Chapter markers appear orange in the Compressor preview area.Ĭompression markers: Generate an I-frame, but do not generate thumbnails, chapter-track entries, or other metadata. Chapter markers are also included in submissions to the iTunes Store as part of an iTunes Store package. You can also assign a URL to a chapter marker to have that URL appear during playback of a podcast. Compressor can create the following types of markers:Ĭhapter markers: Generate named index points and thumbnail images for DVDs, QuickTime movies, or video podcasts. Added I-frames improve compression quality, but can increase overall file size. Additionally, when you output the source file to an H.264, MPEG-2, or MPEG-4 video format, each marker forces the creation of an I-frame. You can use Compressor to append a marker with editing notes or other descriptive information.