Converted videos show a black screen thumbnail

[Ultra Male]

So I am recording videos using my DSLR Nikon D3500 Camera which records them in .MOV format.

When I converted them to MP4 using dBpoweramp Video Converter, they played just fine on my computer but when I copied them to my phone and then uploaded them to Instagram, they didn't show the first part of the video as a thumbnail as usual but instead they were showing a black/blank screen.

I tried a few videos to ensure it wasn't just that one video and they all have the black thumbnail.

Then I tried to convert those same videos using Nero Recode 2019 and they appear just fine with the thumbnail when uploaded to Instagram.

Can someone from support look into this please?

[Spoon]

Re: Converted videos show a black screen thumbnail

You are encoding as h264?

[Ultra Male]

Re: Converted videos show a black screen thumbnail

You are encoding as h264?

yes

[Spoon]

Re: Converted videos show a black screen thumbnail

We are investigating this issue, but for now if you can try a test:

browse to 'C:\Program Files\dBpowerampVideo\encoder\MP4 (H264)'

and edit encoder.txt

Look for the line:

[clistring]
-f mp4 -c:v libx264

and change to:

[clistring]
-f mp4 -c:v libx264 -pix_fmt yuv420p


Let me know please if this fixes the issue (reencode one file to MP4 (H264) set to reencode the video).

[Ultra Male]

Re: Converted videos show a black screen thumbnail

We are investigating this issue, but for now if you can try a test:

browse to 'C:\Program Files\dBpowerampVideo\encoder\MP4 (H264)'

and edit encoder.txt

Look for the line:

[clistring]
-f mp4 -c:v libx264

and change to:

[clistring]
-f mp4 -c:v libx264 -pix_fmt yuv420p


Let me know please if this fixes the issue (reencode one file to MP4 (H264) set to reencode the video).

Sorry I just saw your message. I noticed there is a new version R1.7 now. I will try that again and see if the issue is still there.

[Spoon]

Re: Converted videos show a black screen thumbnail

You would have to include the Pixel Format DSP set to yuv420p

[Ultra Male]

Re: Converted videos show a black screen thumbnail

You would have to include the Pixel Format DSP set to yuv420p

I converted a video using the MP4 (nVIDIA H264) profile and this time the thumbnail appeared just fine in Instagram just like any other video I guess whatever issue was there has been fixed in R1.7

Now one more thing which I noticed today which is a bit puzzling is the quality slider, it says if I slide it all the way to the right it's high quality and all the way to the left it's low quality but when I slide it all the way to the right why is it showing as 0 for the quality rather than 100 or 100%? This is confusing

[Spoon]

Re: Converted videos show a black screen thumbnail

It is just how that encoder expresses quality, it would not translate well to a % (100% implies that nothing is lost) and 50% implies that 50% is lost.