Quick Tip: Bandicam Releases CFR-capable Recording Update (for Importing into Vegas, Premiere, Lightworks, etc) [Notice of Update]

Just a Quick Tip for people having problems editing their recordings in Sony's Vegas, Adobe's Premiere, or Editshare's Lightworks, Canopus' Edius and other similar Non-Linear Editors:
Bandicam has released an Update to their software today, that allows the choice of either VFR (Variable Frame Rate) recording [Shadowplay's Default, for example] or CFR (Constant Frame Rate) recording - which is much more compatible for importing into these video editing applications, when recording with NVENC, AMDAPP or QuickSync codecs.


For a number of years now, people have been having issues with importing videos into Vegas or Premiere (to use these as an example, as two of the more common consumer editors) - mainly because many recording applications/settings use, by Default, VFR recording (Nvidia's Shadowplay, for example). As many people have already found, this can cause a multitude of problems, when trying to import these recordings into some of the video editing programs mentioned above. Problems such as:

• Audio and Video being Out Of Sync
• Recordings not showing up as Full-Length
• Audio not importing properly
• Video not being recognized
• Audio importing as only 'a small piece' of data

and other issues...

An example of one issue that can arise with VFR and some Video Editors is, 'trails' or corruption of some type; where the differences between the frames is displayed erroneously, as seen in the still-frame/screenshot just below:

While these issues are a combination of the strictness of the video editing applications and the settings that the codec is using in a recording application, these may now all be alleviated, with the latest update to the game recording program Bandicam, if they are occurring:

The Bandicam interface after the recent update, showing the Steps ("I. II. III.") for enabling CFR, which increases import compatibility with video editing applications such as Vegas, Premiere, Lightworks and more (MP4 container, GPU-accelerated H.264/AVC via the AMDAPP codec, 60fps format/settings shown as example). Click to see Full Size

Today, after updating to the latest version of Bandicam, there can be seen the option to choose either VFR (the Default for Shadowplay and many other recording applications, including Bandicam - which is more efficient for compression, but can result in problems when importing into Vegas/Premiere/etc) or CFR (which is less efficient for compression, but can alleviate the problems with importing into Vegas/Premiere/etc).

For those wanting to use NVENC, AMDAPP or QuickSync to record, for example (GPU-accelerated recording capabilities), this will allow increased importing into these editors, without the need to 're-compress' the videos into a more compatible video format (for example, adding the extra step of using Handbrake to convert the videos into CFR, making the videos importable into Vegas/Premiere/Lightworks/etc, as I wrote about here, when talking about Shadowplay). 

(As another example, if you used Plays.TV's client to record with (which can also use buffered and GPU-accelerated recording), you may have noticed audio/video desynchronization occurring, when attempting to import your recordings into video editing programs - as Plays.Tv's Support Area talks about here, it is due to the usage of VFR)



As a quick Test, I captured my Desktop in a short recording (using Bandicam with the new CFR setting), then tried to import that into Vegas, to see if the video and audio were indeed importable without problems, as a trial of this new compatibility setting.....

A short test of the CFR setting in Bandicam (Desktop portion, short recording, imported into Sony Vegas Movie Studio Platinum 13, playing back within Vegas, output converted into GIF with Honeycam).
Click to see Larger Size

It worked great! The recording was not only imported into Vegas without complaint, it was faster (more responsive) in editing/shuttling/scrolling through the video, due to the CFR setting.

[This was with the AMDAPP (AMD GPU-accelerated) codec, in the MP4 container, using the CFR setting. This codec setup within Bandicam utilizes AAC audio as well and I would use it mainly when editing with Sony's Vegas line of video editing products, as it seems to import without issue. If I were to switch to other codecs or the AVI container, they may then not be as easily imported into NLEs such as Vegas, so I would then use something else, such as CyberLink's PowerDirector (for example), which is far less 'fussy' when it comes to codecs and formats, for importing]

VFR (Variable Frame Rate) helps increase possible compression by reducing the number of frames in a group ('groups of frames utilized per second' in the file) - literally reducing the number of frames used in a file - when less is changing/occurring onscreen. CFR (Constant Frame Rate) will increase file size moderately, due to the fact there is no longer the reduction of the number of frames in a group useable as a factor in compressing the video further - when 60fps is set as a FrameRate, it will literally write sixty frames every second into the video file, regardless of how much has changed onscreen. BitRate is still the major factor in how large the video will be, however. Also note, that this setting is independent of the "fps" (Frames Per Second) displayed output.

[TLDR: CFR will create larger files than VFR because it cannot compress the video as much, but not excessively large, as BitRate is still the main factor in video compression/sizes - and both of these do not affect "frames per second" output onscreen]

Hopefully, this new capability will alleviate the problems with importing your game recording experiences into your favourite video editing application. Try it out, have fun with it - and See You In The Game!

 N.B.: 

I discovered when editing recordings with NLEs (Non-Linear Editors) such as Vegas, Lightworks, Premiere, et al. you may need to utilize a GOP (Group Of Pictures) of "1" for editing compatibility... 

Usually, with MPEG-based video data, there are set intervals of "Keyframes". 
Keyframes are 'stand-alone' images, where all the picture data is kept within one frame (it is not dependent on surrounding frames in the file). Video editing applications use these Keyframes to begin/cut edits from. If there is a large GOP (with many frames in-between these Keyframes), the video editing program must 'key off' of these frames, rebuilding the GOP within the program, causing slowdown in edit processing and possibly causing visible corruption ('trails' or 'glitchy' output). 
Setting a Keyframe Interval of "1" makes every frame in the video a Keyframe, eliminating the possibility of this issue. 

I have written a couple of articles on this, here at the blog,
http://gametipsandmore.blogspot.ca/2013/06/and-more-how-to-record-with.html
http://gametipsandmore.blogspot.ca/2013/05/game-recording-with-mpeg-4-using.html
and submitted this occurrence to Bandisoft, the development house of Bandicam. I am proud to state that this led to the inclusion of a Keyframe Interval option within Bandicam. 

This setting may still be required for full compatibility with Non-Linear Editors. 

Although a GOP of 1 takes away most of the 'headroom' to work with video compression (the video file sizes will increase as it does not have the inter-frame dependency), if you are having issues with importing your videos into these types of video editing applications, even with this new CFR setting, try configuring the Keyframe Interval to "1" [you can also use PCM ("Uncompressed") audio to increase audio compatibility] and this should assist with issues with importing your recordings into these editors. 

Good luck with it!

And More: Editing NVIDIA's Shadowplay Recordings and 'The VFR/CFR Problem' (Text-Only Version)

[Updates at bottom of article]

Just a quick post on the problem many people seem to be having with editing NVIDIA's Shadowplay recordings and how to work around it, for now...

For those who don't know, Shadowplay is a free game recording capability that is included in NVIDIA's GeForce Experience utility and is accessible by anyone with an NVIDIA GPU that is a GTX 650 or higher [they state "600 Series or higher"]. Simply install the GFx utility [my abbrev.] and turn it on and Shadowplay will record a buffered period of time, overwriting that space/file again and again, until you decide to save something cool that happened in the game.

Whether FRAPS sold NVIDIA the code to do buffered/looped recording (as FRAPS has had it for many years), or NVIDIA developed it on their own, the end result is the same. The problem is, a ton of people [if technical and game forums everywhere are an indication] are unable to edit the end output correctly, when using Shadowplay.

The main reason why this seems to happen, could be due to Shadowplay utilizing VFR to record it's video data into a file. VFR stands for Variable Frame Rate, and essentially it allows the frame rate to change from slow to fast, above and below the 'set' frame rate, many times if needed, within a single video file. This helps to save space by making low-motion (or static) scenes use less frames within the video file and make complex scenes (with high-action/movements) look smoother by inserting more frames into the video file. Sounds good and test videos look fine, but the problem is when going to then edit the 'Shadowplays'.

Many video editing applications (especially NLE's [Non-Linear Editors]) may not like Shadowplay and will choke on the video, hold back sound in spurts and spit up bits of food on your screen if you try to edit the recordings. This could be due to the usage of VFR.

Note: I don't want to 'put the blame' on NVIDIA or VFR here, NVIDIA is a fantastic company with great innovations and products, and VFR is a great method for organizing frames within video data that creates a lot of 'headroom for compression' (lower file sizes by reducing the number of frames used) while trying to maintain Quality as well (by increasing the frames utilized per second within the GOP data of the file, as the codec decides it is beneficial). It merely is not as compatible, when it comes to video editing programs. As another example, Plays.Tv uses Accelerated VFR in its' Client to buffer/record with, which it notes here in their Support section, is simply less compatible and can create audio/video synchronization problems - the issue is VFR and editing compatibility -  not these companies/utilities themselves...

Fortunately, the 'fix' [which in my opinion of more of a work-around] is relatively easy, if slightly time-consuming:

Simply re-render the Shadowplay recordings into CFR (constant frame rate) video (where 60fps really is 60 frames being recorded or played back in sequence, in the video, every second, throughout the entire clip). There are many apps that can do this, but the most popular [most-popularly-used in the video-editing circles that are experiencing this problem] is probably Handbrake (it is completely free to use). Simply import your video and choose Constant Framerate in the Video Tab. That's it.

Another program you can use, is built right in (if you use Windows): Windows Movie Maker [Note: Windows Movie Maker does not seem to be bundled with Windows 10, it may however be available as a separate download]. Simply import the video and without adjusting anything, export (render) it out to MPEG-4 (MP4) format. It will produce a CFR (Constant Frame Rate) video that you can then import into programs that were having trouble with VFR - like Adobe's Premiere and other video editing applications.

[Choose a high quality setting or high bitrate, to maintain as much of your original recording detail as possible (so it won't compress it even more and lose detail). If you need to set a BitRate for the export, make sure to set it higher than the original video clip(s) BitRate ((Personal Suggestion: 2x more if you can))]

Once this is done, you'll be able to import your Shadowplay 're-renders' without problem, whether you use Premiere, Vegas, Lightworks or some other video editing application that has been having trouble importing your VFR video (for instance, some people have had problems with Shadowplay recordings using CyberLink's PowerDirector and others have not had a problem with PowerDirector at all, importing it fine - I have not used Shadowplay Recordings in PowerDirector yet [I do not have a GPU capable of using Shadowplay at this time] but I have personally imported VFR material into PowerDirector 12 without problem).

[I might come back and add screenshots to this article in the future, or create a new one talking more specifically about VFR and importing it into Premiere, but for now I wanted to bang it out and get it up here to help people who have been having this problem (many since last year, when Shadowplay first came out, with even more people having the problem earlier than that with Premiere and VFR recordings from their cameras)]

I hope that helps some people out for now, anyway. Have fun recording - and See You In The Games!




Update 1:

Bandicam has now implemented an option in their game recording software (as of July 2015), which allows choosing CFR recording or VFR recording. Since it also uses GPU-accelerated codecs such as AMDAPP, NVENC, QuickSync (and can be made to use CUDA, if you still have that), it seems to have become a viable alternative to this problem. As a Registered User of Bandicam, I shall test out this latest version of the software and perhaps write a post about it Soon™


Update 2:

I have done some quick testing with this new version of Bandicam (with the ability to choose CFR as well as use VFR if desired) and have written a short post about it at this blog, here.


Update 3 - 2018.06:

NVIDIA's Game Recording Utility seems to have changed names a few times, known as Shadowplay, then Share, then In-Game Overlay. Whatever it is called today, while this issue with editing VFR might remain, on some older video editing applications; it seems to be less of an issue on the most recent versions of video editing apps (as of 2018) - tested personally with a few programs, such as Sony's Vegas Pro 14 (now taken over by MAGIX), CyberLink's PowerDirector 16, and Corel's VideoStudio 2018 - all three video editors did not have an issue Importing and Editing VFR material (as of June 2018 when I did these short tests) [I do not own and did not test Adobe's Premiere/Elements, at this time, sorry]. So, if you are having an issue editing Shadowplay/NVENC recordings circa 2018 or later, try updating your video editing application(s), if you can.