Variable frame rate Puns

After months of issues with my OBS files having laggy playback and slow render times in Adobe Premier Pro, I think I found a fix.

So many search results would say the issue is "OBS recording with VFR (variable frame rate)", while others would say "VFR is disabled in OBS by default", OBS people would blame PP and PP people would blame OBS.

I think I have finally found the one true answer, and that is - forcibly disabling variable frame rate in OBS via the custom muxer settings.

I still get told that this shouldn't work, but I'm telling you it's the only thing that has worked for me, so feel free to try it and let me know your results.

Here is a quick 1min video tutorial of [how to disable VFR in OBS studio](https://youtu.be/OgI9183amoo)

Basically you just go to OBS settings and add 'force-cfr=1' to the custom muxer. Problem solved, inspecting the video in PP no longer shows it as having variable frame rate (this may vary as PP is terrible at telling if a video file is using VFR or not), and the video playback and rendering speeds are faster then they've ever been!

Hi All!

I’m working with some iPhone footage (recorded with the Riverside.fm app). As you probably already know if you work with iPhone footage and need the audio and video in sync on your FCPX timeline, it needs to be converted from variable frame rate to constant frame rate using Handbrake – at least that’s the only tool I know of. Works great.

However, with this project, 1 of the 2 clips converted fine, but I’ve tried converting the second, longer (about 35 minutes) one several times with slightly different configurations (including the exact same configuration as the other file), and the output file continues to gradually lose synchronization between the audio and video.

This is true whether I import it to FCPX or play it back with Quicktime Player. Driving me crazy.

I’ve tried the H.264 encoder, the MP4 encoder, matching the audio sample and bitrates exactly to the source footage, keeping the source 30fps, and converting it to 24fps.

Has anyone encountered this? Attached is my most recent configuration in Handbrake for this conversion.

https://preview.redd.it/ovxz19r67y581.png?width=1708&format=png&auto=webp&s=0ea04feb9f267246b19cc1b54e5ce79982520ad9

Hi all, I'm trying to figure out how to get a FPS of a 30.031638 of a video that I want to edit. I don't know what the base/FPS should be to get that exact frame rate. When I try to enter manually "30.031638" as a custom FPS- it changes into 300 FPS (!). Any idea on how to get that exact FPS rate if that is even possible? Thanks for any help!

https://preview.redd.it/4pku5sstc3c81.jpg?width=436&format=pjpg&auto=webp&s=1908dba8900728b04c30e6bfba21f4325183e88e

Can youtube convert variable frame rates?

For example: My raw video fps sometimes is 59.94 or 59.85 fps. Will Youtube just convert that into 60? When I try to cut the video in my cutting software the video is not in sync with the audio.

Thanks for help in advance!

I have some flickering and banding issues I now need to fix in post.

I had turned off VFR but I think because I switched Rec Quality it turned it on again? Has this ever happened to anyone?

I'm playing with Flicker Free and it's sort of working on some shots. I'm new to the GH5 world so tips would be appreciated.

A bit more info: I thought I was shooting 24p but I was actually shooting 48/24p. I was playing with different shutter angles (thinking I was in 24p) so it's a little all over the place. I know... I'm bummed.

I record my kids' hockey games at 1080p with my phone and share on YT for the team, but I usually re-encode into a smaller file size (1 hour = ~1.5GB) for my own collection. I read this part somewhere:

VBR stands for variable bitrate Unlike CBR, VBR looks at each individual frame and decides which frame needs a lot or a little compression. The bitrate of every frame will be automatically adjusted by the encoder. This type of bitrate is ideal for dynamic video contents such as music concerts or sports events.

So obviously I want to use VBR, but in Handbrake it gets confusing. The settings to choose are either constant vs. variable FRAME rate or constant vs. avg QUALITY (where you choose bitrate). So is the pertinent choice here variable FRAME rate?

Lastly, if I'm typically just watching on my own PC, but the occasional Plex-streamed to a 55" tv, do you suppose 720p is ok or would you leave it at 1080p but lower the bitrate (phone captures at 17000 kbps) to save HDD space? Is there an optimal setting you've found (constant quality - what number?) or (avg bitrate - what bitrate)? Maybe I can get a 1 hour video to be smaller than 1GB while still being acceptable?

Can anyone tell me which boxes support variable frame rate?

I worked in the QC side of TV for over 20 years and drop frames and stutter are a pet hate, and once you've spent 20+ years looking for it, you can't not see it!

I need something with at least 3 usb's and I don't want a Shield.

The only thing I found that doesn't drop frames is Kodi installed on a Sony 4K Android TV, which gives perfect replay, but I can't attach my HD's to it!

Cost isn't a factor.

Thanks. . .

Hi guys,

I am sure you are all aware but working with Iphone video in variable frame rate is a pain. AME often don't fix the problem and shutter encoder is good but I have to go around IT to use it and I loose time.

But even before the footage hit me, I would like to try and provide the person recording the clips with an app that would record a fixed frame rate, free if possible. I know they will probably not use it but it is worth a try. Do you know of any that you would recommend ? I have heard of Filmic and Moment but both are not free.

Cheers

Hi everyone,

I just recorded a few video's with my phone, samsung galaxy s10e, with the resolution UHD & 60fps. However, when I imported everything on my computer to edit, I got the notification that they were filmed with a variable frame rate and all had to be converted.

Is there any way that next time I can avoid this? I tried to google how to fix the frame rate, but couldn't really seem to find anything..

Many thanks in advance!

Edit: I currently edit in Shotcut, I'm not sure if this is a problem for all editing software..

I started editing recently (like, literally yesterday) with DaVinci Resolve and I've found (and with no real explanation on how) that my audio from an mp4 file has creeped about 2 seconds in front of the video from the same file. Every time I try to move either the audio or video back into sync it just drags them both, maintaining the same out of sync buffer of 2 seconds. How to fix? What do?

Been struggling with audio delays in long gaming footages as I try to edit in Premiere. My current solution is transcoding the recordings through Handbrake but was unhappy with the results being of lower quality due to compression (it's nice for storage tho). Does this problem also occur in After Effects? Is there any fix for this apart from Handbraking? What file format should I use to edit in post?

Thank you so much!

Has your experience with editing VFR footage using the preserve audio feature been reliable, or unreliable?

I'm an editor for a twitch streamer, and I mainly use Final Cut Pro X to edit, but for this twitch streamer, I've had to download very long streams from twitch (sometimes 8-10 hours). And because downloaded twitch vods for some reason use VFR I've had audio sync issues.

Searching for a solution to this many people suggested that the only real solution is to transcode media to prores or some form of constant frame rate. But I am in the process of doing that and it has literally been almost 24 hours of transcoding and is only at 60% and I really cannot spare that much time every week.

So, I found out that premiere pro claims they support VFR, but I've had some people caution me against using that saying that it often causes glitches, or data moshing or things like that. But one person suggested that if I export the project as prores and then convert to h.264 for posting, it may help prevent glitches.

Really hoping this method works, but I'd like to hear some people's real world experience with the feature. If this doesn't work I'm not sure what can really be done.

https://drive.google.com/folderview?id=1v9DZHkUWsQnOg4rrSdlpZd49aISrxcTs

This folder has the video(screen recording) and the audio recorded separately.

Please someone helppppppppop!

I want to sync the audio and the video. Currently the audio and video are not synced. I tried different things.

Like changed the way the footage was interpreted and changed a smooth blend setting.

Also tried speeding up and down the audio.

And also, changed the frame rate and made it constant.

Still no luck. I'm tired! PLEASE help.

I use Premiere Pro. But any tool is welcome!

Hi,

I am trying to convert a video with 2 pass encoding as such:

ffmpeg -i video.mp4 -c:v libvpx-vp9 -b:v 100k -pass 1 -r 15 -vsync vfr -an -f null /dev/null && \
ffmpeg -i video.mp4 -c:v libvpx-vp9 -b:v 100k -pass 2 -r 15 -vsync vfr -n -c:a libopus -b:a 32k -ac 1 output.mkv

But the output says its constant frame rate when using media info.

How to encoding using variable frame rate? Thanks.

I'm an editor for a twitch streamer but the twitch vods that I download are apparently in variable frame rate even though QuickTime says it's 60fps. And I get severe audio sync issues after downloading (whereas it was in sync on twitch).

Would creating optimized media make the footage a constant frame rate and resolve the issue?

Comparing between pmw-3389 & paw-3335,

Battery consumption ofc is a major difference between them but put this factor aside, does pmw-3389 tracks better than paa-3335 because it has a constant fps?

(I've heard the paw-3335 fps drops real low when the mouse isn't moving)

Hi Editors,

I accidentally shot a concert at 60fps with variable frame rate on, making it slow motion

My main camera is 30fps.

Is there a way to convert the 60 FPS footage to 30 FPS?

I feel like I’m going to vomit. Please help.

I keep reading about this VFR problem, but when I google for it I can't find any source that says that a late model iPhone will record in VFR. Apple support pages don't even have the word "variable" on it, according to Google. On my phone the choices are clear: 24 fps, 30 fps, 60 fps, etc.

Is this an old problem that does not apply to the newer phones? Or does Apple do this without telling you?

Sorry if this has been asked before which I am sure it has. But about to start a quick job that was shot on various smart phones. Going to transcode it all to prores constant frame rate. Does Adobe Media Encoder support variable frame rate conversions or should I go with something else like HandBrake?

And should I keep the frame rate set to same as source or force it to another? Thanks!

I’ve ripped some discs to mkvs, and I’m wanting to switch them to mov or mp4 losslessly to edit in premiere/resolve. It seems like a super easy command (ffmpeg -i input.mkv -codec copy output.mov), but even though it successfully outputs the video, it switches it to a variable frame rate. I am certain that the original videos are constant frame rates (either 24p or 23.976p). How can this be avoided? I’ve tried all sorts of suggestions I’ve seen online (seems like it’s been a problem for a while) to no avail.

The only solution I’ve found is encoding to dnxhr, but that is far from ideal since it isn’t lossless, takes a while, and takes up way more space.

Any help would be appreciated!

Edit: Not sure why I didn’t come to Reddit first for some help. Think I got the hang of it now.

I have some videos my boss recorded using his iPhone and he wants them uploaded to YouTube. He asked me to stick our animated intro in front of them and upload them. Should be a fairly simple job except that the audio gets out of sync pretty quickly in these videos.

I have been searching for an answer to this issue, and the best explanation I can find for what the problem is, is that iPhone record using variable frame rate but PP does not support variable frame rate. In part of this search, I found a video on YouTube by a guy demonstrating how after PP 2018, they did support variable frame rate but I can not seem to make it work.

Is this because I do not know how to use it? Was this feature added then taken away? Does PP now support variable frame rate and this means my problem is not due to variable frame rate?

If it is due to it being variable frame rate, is there a way to correct it that doesn't involve downloading another program (Handbrake?) to correct?

OK, so I completely fixed my micto stutters and what I originally thought were load stutters.

I have a 75hz Freesync monitor.

When the monitor is at 75hz, with Freesync enabled, and the game is capped at 60 FPS, it will mictostutter. I guess the game doesn't like the monitor syncing the refresh rate somehow (I checked the monitor refresh rate counter at it's at 60hz)

I disabled Freesync and set the monitor to a static 60hz. I then played the game with Vsync enabled and 60FPS limit set in the game. Completely smooth. No stutters.

So I thought, OK, I'll set the monitor to 75hz, it's highest, but turn off Freesync as well. The game stuttered when using unlimited FPS (which Vsynced to 75fps). So I capped the game through Nvidia to 75fps, and the stutters disappeared.

Using Freesync causes stutter, even though the monitor is syncing it's refresh rate fine. Using fixed refresh rate with Vsync, without capping the frame rate either using in game or out of game limiter, causes stutter.

Using fixed refresh rate, say 60hz, or 75hz, with an in-game limit of 60FPS, or an out of game limiter of 75FPS, results in NO stutter.

Please can someone else verify.

Hi, so I doing a podcast and recording video as well. When I'm trying to to sync the video and mic audio I've noticed that through out the video the audio becomes out of sync. I've learned that this is because of variable frame rate with the iphone. I tried looking on the iphone to see if I can keep the 30 FPS when recording but there was only one switch that said "lock cameras" so you don't switch between them. I'm not sure if that'll even do the trick. What I'm getting at is I don't want to have to record a video, upload it, and then put it through hand brake to get the constant 30 fps everytime. It takes ~ 2 hours and is a pain. Does anyone have a solution or am I SOL?

So I'm planning for a shoot and was going to film in 10bit because it turns out my laptop can edit 10bit footage after me thinking it couldn't. However this would mean that I can't use the VFR option as this is locked to 8bit. It's a nifty little feature and I've enjoyed using it before but is there any disadvantage to shooting in 60fps and changing the playback speed in Premiere afterwards so I can still use the 10bit option?

I would like to film at 30.00fps with multiple cameras and keep them genlocked together so that the shutters fire at precisely the same time. The Panasonic BGH1 has system base frame rates of 59.94 NTSC, 50.00 PAL, and 24.00 CINEMA. If I have the cameras connected to a common sync generator that is feeding them genlock that matches their system base frame rate, will the non-base frame timing be locked together between cameras, or does the camera ignore genlock once you set it to VFR mode?

(I know Blackmagic cameras can record natively at 30.00fps, but looking for alternatives.)

I'm new to monogame and I'm getting really confused on how to properly use a variable timestep. I would be using a fixed timestep if it weren't for the awful stutter. In my game, I have a player that can jump up and down and some tiles that continuously scroll to the left. When I change the refresh rate of my monitor from 75hz to 60hz the game gets noticeably slower. How do I fix this?

This is the code for the player's movement:

var delta = (float)gameTime.ElapsedGameTime.TotalSeconds;

position.X += velocity.X * delta;

position.Y += velocity.Y * delta;

velocity.Y += gravity * delta;

The code for the tiles works pretty much the same:

var delta = (float)gameTime.ElapsedGameTime.TotalSeconds;

position.X -= 4 * delta;

I'm not sure whether I'm supposed to multiply by delta every single time I change the velocity variables or just when the position changes. Also if you know any tutorials that use a variable timestep that would be helpful too. Thank you!

After months of issues with my OBS files having laggy playback and slow render times in Adobe Premier Pro, I think I found a fix.

So many search results would say the issue is "OBS recording with VFR (variable frame rate)", while others would say "VFR is disabled in OBS by default", OBS people would blame PP and PP people would blame OBS.

I think I have finally found the one true answer, and that is - forcibly disabling variable frame rate in OBS via the custom muxer settings.

I still get told that this shouldn't work, but I'm telling you it's the only thing that has worked for me, so feel free to try it and let me know your results.

Here is a quick 1min video tutorial of [how to disable VFR in OBS studio](https://youtu.be/OgI9183amoo)

Basically you just go to OBS settings and add 'force-cfr=1' to the custom muxer. Problem solved, inspecting the video in PP no longer shows it as having variable frame rate (this may vary as PP is terrible at telling if a video file is using VFR or not), and the video playback and rendering speeds are faster then they've ever been!

EDIT: SOLVED

https://drive.google.com/folderview?id=1v9DZHkUWsQnOg4rrSdlpZd49aISrxcTs

This folder has the video(screen recording) and the audio recorded separately.

Please someone helppppppppop!