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Feature Requests / Record video to > 4 GiB files in H.264 mode (esp. for 5D Mark III)
« on: March 17, 2014, 01:39:11 PM »
We do quite a lot of event videography, and one of the nicer features of the 5D Mark III is that the default camera firmware allows for recording 30 minutes straight without needing ML's movie restart feature. We are very greatful to the movie restart feature for 30+ minute recordings, but this feature request is not about that.
As you know, the 5D Mark III still splits up video files into 4 GiB chunks, even when the CF or SD card uses the exFAT filesystem. This limitation is the basis for the mlv_rec RAW video recording option labeled
This request is for the same feature in H.264 mode. During post-production, we have noticed that even with the camera supposedly being able to "continuously" record to 29:59, there are dropped frames during the 4GiB file changes! The first 4GiB file generally records for 16-17 minutes, after which the next file is created: in between, there are about 4 video frames that are lost in this transition, meaning the 5D Mark III is not able to truely record to 29:59 straight through!
It is frustrating because when using exFAT, there is no need to make 4GiB splits. Ideal ML behaviour would be to auto-detect the filesystem on the recording media and simply keep recording until the 29:59 limit is reached in a single file if exFAT is used. If this ideal behaviour is too difficult, then simply giving a menu option as with the mlv_rec's "Files > 4 GiB" option would be a huge improvement for all of us who need continuous recording with no dropped frames.
It would, at least in our case, be a killer feature of the ML software! We are otherwise being unfairly held back by FAT-era limitations in a post-FAT world.
As you know, the 5D Mark III still splits up video files into 4 GiB chunks, even when the CF or SD card uses the exFAT filesystem. This limitation is the basis for the mlv_rec RAW video recording option labeled
Quote
Files > 4 GiB (exFAT)
This request is for the same feature in H.264 mode. During post-production, we have noticed that even with the camera supposedly being able to "continuously" record to 29:59, there are dropped frames during the 4GiB file changes! The first 4GiB file generally records for 16-17 minutes, after which the next file is created: in between, there are about 4 video frames that are lost in this transition, meaning the 5D Mark III is not able to truely record to 29:59 straight through!
It is frustrating because when using exFAT, there is no need to make 4GiB splits. Ideal ML behaviour would be to auto-detect the filesystem on the recording media and simply keep recording until the 29:59 limit is reached in a single file if exFAT is used. If this ideal behaviour is too difficult, then simply giving a menu option as with the mlv_rec's "Files > 4 GiB" option would be a huge improvement for all of us who need continuous recording with no dropped frames.
It would, at least in our case, be a killer feature of the ML software! We are otherwise being unfairly held back by FAT-era limitations in a post-FAT world.
