https://www.youtube.com/watch?v=H8TDDZhyh7U
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https://photojoseph.com/tips/2021/3/29/updated-march-2021-downloadable-audiovideo-sync-tests-2398-24-25-2997-50-5994
These are my own custom audio sync tests, provided for you to freely download at all common frame rates of 23.98, 24, 25, 29.97, 50 and 59.94 fps.

https://forum.blackmagicdesign.com/viewtopic.php?f=4&t=71117
BM seems to be one of the few vendors that offers us the choice of 59.94 fps or "true" 60 fps when shooting video. I've researched extensively and understand that (1) "60" usually means 59.94; (2) 59.94 is the result of the way NTSC video evolved; and (3) even though we can't easily see the difference, 59.94 and 60 are different and

https://www.reddit.com/r/VideoEditing/comments/ir7930/5994_vs_60_is_there_a_difference/
Yes there is a difference. 59.94 has 0.06 frames less every second than 60fps. If you put 59.94 in a 60 sequence it will probably not be a big deal but it's best practice to make your sequence match your primary footage format. There are many situations that a mismatch can cause problems. 4.

https://github.com/DistroAV/obs-ndi/issues/498
Audio sync is still an issue with 4.9.0, and tested using a few different network cards. The issue can be easily reproduced with both Normal and Low latency modes, although it may be less severe with the latter. Please see the videos for

https://www.reddit.com/r/VideoEditing/comments/rzleq4/what_framerate_to_use_and_why_5994_or_60/
smexytom215. • 2 yr. ago • Edited 2 yr. ago. Both record 60 frames per second, the only difference is how the timecode counts the frames. 59.94 is a drop frame timecode, meaning that every few seconds, only 58 frames are counted as a second rather than 59. You can tell the difference between drop-frame timecode and non-drop frame timecode

https://vi-control.net/community/threads/scoring-a-dvcprohd-film-w-59-94-frame-rate-how-do-you-deal-w-daw-sync.5767/
Sorry for this OT post, but I know many here deal with film scoring on a regular basis and hope they can share their knowledge. I'm scoring a student film that was shot in DVCproHD, and thus exists in a 59.94 frame rate. They sent me a quicktime movie in this frame rate, through unfortunately

https://forum.vizrt.com/index.php?threads/live-stream-sync-test-for-720p-and-1080p-30fps.244250/
I have been using a simple sync test/aspect ratio test for all of my live stream jobs recently. This works pretty well - at least it does for me. How to use: 1 - Set up the relevant raster size video in a project 2 - Place in DDR and set to loop 3 - The video starts with a long tone and then goes to 1-second bursts.

https://editorsean.com/articles/audio-video-sync-alignment-latency-test/
The alignment test allows the user to check how far out of skew the sound is from the video (up to 520ms / 13 frames, see further down for a longer sample), while the sync test is for making sure the audio is in perfect sync with the video. MP4 file Specifications: Video: 720 x 576 @ 25fps. H264 Video - Default settings.

http://www.ballastmedia.com/audio-video-sync-test.html
Audio Video Sync Test. May 6, 2018 BallastMedia. This is a resource you can use to test your audio and video sync. AudioVideoSyncTest_BallastMedia.

https://www.reddit.com/r/buildapc/comments/67b5zs/how_does_vsync_work_is_599_fps_displayed_as_60_or/
The front buffer is read-only, and it's what the graphics card will output over the VGA/DVI/HDMI/DP link. It will do this repeatedly until the buffers are "flipped" by the application. What V-sync does is prevent the back buffer from being rendered onto more than once per display refresh (~16ms in the case of 60fps).

https://obsproject.com/forum/threads/59-94-has-a-stutter-only-when-streaming-to-youtube-can-anyone-confirm.100869/
Been broken for almost a year! 59.94 Stutters every 10 to 12 seconds. Streaming on YouTube at 60.00 fixes this issue But I have to output 59.94! Seems like its only me. Device Specifics. Processor - AMD Ryzen TR 1950X Graphics Card - Nvidia GTX 770 4GB SC Drives - SanDisk Extreme II 240GB

https://tentaclesync.zendesk.com/hc/en-us/articles/360002606217-Recording-and-synchronizing-with-50-fps-59-94-fps-and-60-fps
Just use your Tentacle unit with 30 fps (29,97 fps, 25 fps), when recording 60 fps (59,94 fps, 50 fps). Our Tentacle Sync Studio software will automatically detect the difference and will recalculate the timecode for the higher frame rate. Technical background. We developed our Tentacles in relation to international broadcast television systems.

https://www.ballastmedia.com/time-align-or-sync-your-video-and-audio-in-obs.html
December 13, 2018 BallastMedia 2 Comments. In this video I'll show you one method for time aligning your audio and video in OBS. If you use a different hardware interface to bring in your audio and video, they will go through different drivers with different amounts of processing time - which can result in your audio and video being out of

https://community.adobe.com/t5/premiere-pro-discussions/i-need-to-sync-clips-with-59-94-and-29-97-fps/td-p/9815259
I tried at least six different times starting a new PP project each time. I tried using the MultiCamera function. I tried syncing only two files at a time using "Synchronize" in the timeline. I tried converting the 29.97 files up to 59.94 in Media Encoder. I tried converting the 59.94 to 29.97 in ME. None of it worked so far.

https://forums.blurbusters.com/viewtopic.php?t=8475
I was wondering if the windows 10 graphics setting "Variable Refresh Rate" is now an acceptable optimization for Gsync utilization in DX12 Ultimate applications. My rig is a 240Hz Gsync compatible monitor (primary) along with a (secondary) 60Hz ultrawide. Gaming is done on the 240Hz monitor of course. It consists of a 2080 and i7-8700k both

https://www.reddit.com/r/SonyVegas/comments/5if70h/60fps_capped_at_59940_in_sony_avc_help/
A 30 minute video at 60fps generates 108.000 frames, whereas 59.940 fps generates 107.892 frames. That's 108 frames or almost 2 seconds less. That's going to cause sync issues or choppy video if your source material is recorded at 60fps. That's comparing apples with oranges. I rendered a 6-ish minute test file at MainConcept 60fps and Sony AVC

https://stackoverflow.com/questions/33749109/best-way-to-convert-a-59-94fps-video-to-29-97
6. Yes, dropping every other frame and re-encoding is what you need, ffmpeg -r ntsc should do the trick. This is a quick-and-dirty framerate conversion, if you wanted to lose as little information as possible you'd have to create motion blur from combined frames using some filter, probably not integrated in ffmpeg though.

https://www.reddit.com/r/Twitch/comments/yhgeyr/5997_or_60_fps_output_which_and_why/
If you stream at 60fps, the only portion of the video that will be showing duplicate frames is the camera. But if you stream at 59.94 fps, at some point along the way it will be converted to 60.00 which will affect the entire video frame; all of the content will have a one-frame stutter. Even the game.

https://obsproject.com/forum/threads/im-at-a-loss-i-cant-seem-to-get-a-consistent-60fps-recording-in-1080p.122409/
Since sync seems to be the biggest issue here, thanks to input here on the forum, I decided to try changing my monitors' refresh rates to what is labeled as "59hz" after reading on several other forums and websites that it's actually 59.94hz rounded down in the way it's labeled, and I made sure both games were using "59hz" as well, and low and

https://www.reddit.com/r/VideoEditing/comments/6mi70m/davinci_resolve_why_does_60_fps_imported_video/
The clip is 60 fps, because if I keep it at 59.94 then it gets out of sync with the audio later on. Manually changing it to 60 under clip attributes fixes it - video and audio stay in sync. Why does Davinci Resolve seem to get the wrong fps? The video is encoded with Quicksync LA_ICQ (h264) into an mkv. That mkv gets demuxed into separate audio