![]() Following a standard agreed upon by many still camera manufacturers, solid-state camcorders have a root-level DCIM directory for still images. Solid-state Panasonic and Canon camcorders nest the AVCHD directory inside the PRIVATE directory. On the HDD-based Canon HG10 camcorder the BDMV directory is located in the AVCHD directory, which is placed at the root level. On a DVD-based camcorder the BDMV directory is placed at the root level, as on the Blu-ray Disc. Another difference is location of the BDMV directory, which contains media files. ![]() In particular, it uses legacy " 8.3" file naming convention, while Blu-ray Discs utilize long filenames (this may be caused by the fact that FAT implementations utilizing long file names are patented by Microsoft and are licensed on a per unit sold basis ). Usually, memory cards and HDDs use the FAT file system, while optical discs employ UDF or ISO 9660.Īt the file system level, the structure of AVCHD is derived from the Blu-ray Disc specification, but is not identical to it. Subtitles are used in some camcorders to timestamp the recordings.Īudio, video, subtitle, and ancillary streams are multiplexed into an MPEG transport stream and stored on media as binary files. Slide shows are prepared from a sequence of AVC still frames, and can be accompanied by a background audio track. The menu navigation system is similar to DVD-video, allowing access to individual videos from a common intro screen. Stereo and multichannel surround (5.1) are both supported.Īside from recorded audio and video, AVCHD includes many user-friendly features to improve media presentation: menu navigation, simple slide shows and subtitles. For audio compression, it supports both Dolby AC-3 (Dolby Digital) and uncompressed linear PCM audio. įile organization on Panasonic and Canon solid-state AVCHD camcordersįor video compression, AVCHD uses the H.264/MPEG-4 AVC standard, supporting a variety of standard, high definition, and stereoscopic (3D) video resolutions. The new video modes require double the data rate of previous modes.ĪVCHD and its logo are trademarks of Sony and Panasonic. In 2011 the AVCHD specification was amended to include 1080-line 50-frame/s and 60-frame/s modes (AVCHD Progressive) and stereoscopic video (AVCHD 3D). Panasonic released the first AVCHD camcorder aimed at the professional market in 2008, though it was nothing more than the (by then discontinued) FLASH card consumer model rebadged with a different model number. Both Panasonic and Sony released the first consumer AVCHD camcorders in spring of 2007. Related specifications include the professional variants AVCCAM and NXCAM.įavorable comparisons of AVCHD against HDV and XDCAM EX solidified perception of AVCHD as a format acceptable for professional use. It is H.264 and Dolby AC-3 packaged into the MPEG transport stream, with a set of constraints designed around the camcorders.ĭeveloped jointly by Sony and Panasonic, the format was introduced in 2006 primarily for use in high definition consumer camcorders. ![]() Using the example above, my experience is that 3 identical key frame values must be added one frame in succession in order to achieve a stable pan and zoom at each location.AVCHD ( Advanced Video Coding High Definition) is a file-based format for the digital recording and playback of high-definition video. The pan and zoom effect can be accomplished using unconventional techniques especially when attempting to hold a stable pan and zoom at all animated positions on the still image and it consumes approximately 4 or 5 hours for the example above. Have purchased Studio 22 Ultimate and am finding it difficult, cumbersome, and almost impossible to perform an Animated Ken Burns type pan and zoom effect on a still image especially when holding a zoom using the following example:ġ) Still/photo image stretched out to a 45 second clip on the timelineĢ) Pan and Zoom initiated zoomed in to the center of the photo/still image and held for 5 seconds.ģ) After the zoom hold for 5 seconds, a 5 second duration pan across to the upper left of the still image with the same zoom value from the beginning of the P&Z.Ĥ) After the 5 second Pan across, a 5 second hold at the upper left of the image again using the same zoom value from the beginning of the P&Zĥ) After the 5 second hold at the upper left, an 8 second pan across to the upper right of the still image using the same zoom value for the beginning of the P&Z.Ħ) After the 8 second pan across to the upper right of the still image, a 5 second hold using the same zoom value from the beginning of the P&Z.ħ) After the 5 second hold at the upper right, a 10 second zoom out to a full frame of the the still/photo image.Ĩ) After the zoom out to the full frame still/photo image, a 5 second hold before a 2 second fade to black is applied.
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