Export to .mp4 has lots of dropped frames

VideoStudent

Dell XPS-8900 desktop PC running Windows 10 Pro.

I was using VideoPad version 8.97 on a project and had no problems with exporting to .mp4.

I bought version 17.10. I've been continuing to work on the same project. This is the first time I've exported to .mp4 using version 17.10.

It has lots of dropped frames--green flashes when I play the exported video. I exported twice, the first time using constant 30 fps, the second time using 29.97 NTSC. The same dropped frames in both.

The file size of the .mp4 exported from VideoPad 17.10 is about 80 MB. The exported .mp4 from version 8.97 was about 120 MB. The data rate and total bit rate are lower than before.

I tried to paste a screen capture of the properties but it said I have to upload a file. I don't see any way to do that.

Exported .mp4 properties with version 8.97 were:

Video
Length: 00:14:10
Frame width: 720
Frame height: 406
Data rate: 996 kbps
Total bitrate: 1191 kbps
Frame rate: 29.65 frames/second

Audio
Bit rate: 195 kbps
Channels: 2 (stereo)
Audio sample rate: 48,000 kHz

Exported .mp4 properties with version 17.10 are:

Video
Length: 00:14:10
Frame width: 720
Frame height: 406
Data rate: 573 kbps
Total bitrate: 1191 kbps
Frame rate: 29.97 frames/second

Audio
Bit rate: 195 kbps
Channels: 2 (stereo)
Audio sample rate: 48,000 kHz

How can I fix the problem? Thanks.

borate

Upload your capture to a free server, such as Google Drive. Get a shared or copied link and past it here. If using Google, right-click on the file, click SHARE | SHARE and change "restricted" to "anyone with link can view."

Install this release and report back. If there's still an issue, you will be given instructions on how to upload the project for analysis.

Confirm that the PC's video driver and Direct-X are current...

AMD / ATI users:   [http://support.amd.com/us/gpudownload/Pages/index.aspx](http://support.amd.com/us/gpudownload/Pages/index.aspx)     Intel users:   [https://downloadcenter.intel.com/default.aspx](https://downloadcenter.intel.com/default.aspx)     nVidia users:   [http://www.nvidia.com/Download/index.aspx?lang=en-us](http://www.nvidia.com/Download/index.aspx?lang=en-us)               Update DirectX:   [http://support.microsoft.com/kb/179113](http://support.microsoft.com/kb/179113)

VideoStudent

Thanks borate. I installed VideoPad 17.13, then exported to .mp4. This time there was only one section a few seconds into the video where there was a dropped frame or a few frames. Then I clicked the other links in your reply.

The PC has DirectX 12, the latest version. The Intel link also says everything is up to date. nVidia had a newer driver. I downloaded and installed that. Then I exported to .mp4 again. This time there were no dropped frames, but there were two places where I used the Scale effect that didn't process the effect. I looked at the project and in one of those places the effect was gone. In the other place the Scale was there and it looked correct playing the video in the project but not in the .mp4 where it looked like it wasn't processed.

I added the effect back in the one place in the project and then exported to .mp4 again. For correct testing purposes I should have used the same settings, but I used 24 fps instead of 29.97. This time both uses of Scale were processed. I was curious as to whether 24 fps would look more like film, but I didn't notice any difference.

Thanks for your help.