![]() MOJO - DV QT - video ref Av = 0.11f Span = 0.00 (QT Offset = 12qf) MOJO - DV MXF - video ref Av = 0.10f Span = 0.5 Users without a video peripheral often use the desktop video window on their computer monitor, just how accurate is this?Īll SD composite video (apart from the desktop video) was output to a Sony Trinitron analogue TV, so that display delays could be all but ignored. AJA peripherals do not run with Pro tools 10. I wanted to test this and compare it to how well a Blackmagic video peripheral would perform in PT 10. We have always been told that Avid’s preferred video format for its Mojo has always been DV PAL MXF (that’s DV SD video wrapped in Avid’s MXF container), and that Quicktime video performs badly out of a Mojo. ![]() Let the Pro Tools HD Video Performance Tests Begin - Test 1) Pro Tools 10.3.9 with SD video Values are recorded to 1/100 of a frame and are averaged unless significant individual readings are shown.įor the MXF media no video offset was usedįor the QT media for DV and H264 media, quarter frame offset values are shown, although please note if video ref is used, these are rounded to the nearest whole frame by Pro Tools (whether you like it or not!). Testing Info for Pro Tools HD Video Performance Tests Video Hardware Used In The Pro Tools HD Video Performance TestsĪvid Analogue Composite Mojo for SD videoĪJA IO XT thunderbolt for HD & SD video (with AJA 10.5.1 software)īlackmagic Decklink Studio for HD & SD video (with Blackmagic 10.1.2 software) ![]() Pro-Tools-PC 3.5Ghz Quad Core i7 with 32GB ram (1600Mhz DDR3), OSX 10.8.5ĮSE DV319 for HD tri-level syncs (its HD and SD syncs are synchronous) System Spec Used for Pro Tools HD Video Performance Tests Once a system’s AV error is known to be less than 4 video frames, the faster pace of “multi-spaced” patterns is best at revealing subtle drifting or intermittent errors (the video span). I used the Syncheck video files, and where no file existed, I created it within my Avid Media Composer 4.05 (running on my Mac Pro 1.1).I used the fast paced “multi spaced” test files where the time between flash/pips varies between 5 and 12 frames, often with a distinctive pattern. Sync test measurements were simultaneously performed with a Pharaoh Audio Syncheck 2 & 3 (thanks to UK distributor Mike Woods of Dirty Dog Audio Ltd and to Mike Wabro of ‘Audio In Sight’ for the version 2 loan!). How Did We Do The Pro Tools HD Video Performance Tests? Sync is a complex subject – think of it as latency and that might make your ears and prick up and your expertise kick in. Music guys really should pay attention to this test series, as you will soon see that video is not just a matter of “pop any old Quicktime into the timeline and Bob’s your uncle”. So Why Should Non Post People Read The Pro Tools HD Video Performance Tests? I decided to also include a few other interesting tests for comparison whilst I was at it (“in for a penny - in for a pound”!) so that we can end some of the video urban myths. I widened the test to include Pro Tools 10.3.9 and its video performance so as to compare with Pro Tools 11.1.3. However, once Avid released Pro Tools 11.1.3, Blackmagic released driver version 10.1.1 that allegedly offered dramatic improvement to Blackmagic card users. My initial qualitative test results indicated that the AJA peripherals or PCIe cards were far out performing the Blackmagic cards in Pro Tools 11. The main initial idea of the test was to compare video hardware brands, as historically many users were experiencing performance issues with Blackmagic video peripherals. The Idea Behind Pro Tools HD Video Performance Tests
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