Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670

Warning: preg_match_all(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 665

Warning: Invalid argument supplied for foreach() in /home/treetwik/public_html/includes/MagicWord.php on line 666

Warning: preg_replace(): Compilation failed: group name must start with a non-digit at offset 4 in /home/treetwik/public_html/includes/MagicWord.php on line 670
Multi-machine Capture System - TreetWiki

Multi-machine Capture System

From TreetWiki

Jump to: navigation, search
(Capture machine)
(Possibly cheaper, possibly higher quality alternatives)
An advantage of the simpler systems described above is that they are potentially more reliable as they are not doing as much (Wirecast does a lot more than we are using in this setup).
An advantage of the simpler systems described above is that they are potentially more reliable as they are not doing as much (Wirecast does a lot more than we are using in this setup).
-
If you take a file recorded by Wirecast and run it up in the file analyser in FCP, you will find an interesting thing: FCP will note that there appear to have been dropped frames. Looking at the error list it will show a (large) number of frames with different lengths. Telestream, who market Wirecast, say that what Wirecast does is to vary the frame duration to ensure smooth motion, and that this is actually fine, and that in a given period you will get around the correct number of frames - they just won't all be same same duration. The less charitable way of putting it is that what's actually happening is that WC is dropping frames and they're not admitting it – but this way of handling dropped frames (by making the duration of the adjacent frame equal its duration plus that of the dropped frame) is actually the correct way to do it.  
+
=== An Important Additional Stage ===
 +
If you take a file recorded by Wirecast and run it up in the file analyser in Fina Cut Pro (Tools -> Analyse), you will discover an interesting thing: FCP will note that there appear to have been dropped frames. Looking at the error list it will show a (large) number of frames with different lengths. Telestream, who market Wirecast, say that what Wirecast does is to vary the frame duration to ensure smooth motion, that what you see in the analyser is actually fine, and that in a given period you will get around the correct number of frames - they just won't all be same same duration. The less charitable way of putting it is that what's actually happening is that WC is dropping frames and they're not admitting it – but in any event, this way of handling dropped frames (by making the duration of the adjacent frame equal its duration plus that of the dropped frame) is actually the correct way to do it.  
-
Whatever the explanation, do not try using these files direct in Final Cut Pro as there will be resulting duration errors and edits will appear to mysteriously move about. Instead, fix the files first by running them through Compressor with the same settings as they came in with so it can clean them up.  
+
Whatever the explanation, ''do not try using these files direct in Final Cut Pro'' as there will be resulting duration errors and edits will appear to mysteriously move about. Instead, ''fix the files first'' by running them through Compressor with the same settings as they came in with so it can clean them up.  
-
On the other hand, if you capture with the QT7 or MEdia Express methods described above there are no dropped frames (in fact you can have Media Express stop if there are any!) - but you still require a Compressor session to change the frame rate and in the meantime the amount of disc space you eat up is enormous and you need a respectably fast system to cope with it. Plus the audio side suddenly becomes a lot more complex.
+
On the other hand, if you capture with the QT7 or Media Express methods described above there are no dropped frames (in fact you can have Media Express stop if there are any!) - but you still require a Compressor session to change the frame rate, and in the meantime the amount of disc space you eat up is enormous and you need a respectably fast system to cope with it. Plus the audio side suddenly becomes a lot more complex.
=== BMD Card Preferences ===
=== BMD Card Preferences ===

Revision as of 08:02, 28 July 2011

Personal tools