Resolve can't play a standard .h264 clip

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jasonhanley

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Resolve can't play a standard .h264 clip

PostSun Nov 28, 2021 4:34 am

Resolve can't play the following file:
Image

It just stutters and flashes a clip here and there with no audio.

Any clues as to why?

VLC, Windows Media Player and the Windows 10 "Movies and TV" player all play it fine, including skipping to any location in the file.

It's from a dashcam.
Resolve Studio 18.0.4
Acer Predator Helios 300, i7-9750H, 16GB RAM
Windows 10 Home 64-bit 21H1 19043.2130
GeForce GTX 1660Ti 6GB, Studio driver 522.30
Intel UHD 630, driver 30.0.101.2111
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Charles Bennett

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Re: Resolve can't play a standard .h264 clip

PostSun Nov 28, 2021 8:44 am

I think you will find it's because the sample rate is 32khz. Try converting it to 48khz with either Handbrake or Shutter Encoder.
Resolve Studio 19.0b build 20
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stesin

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Re: Resolve can't play a standard .h264 clip

PostSun Nov 28, 2021 12:21 pm

Is it free Resolve version or paid Resolve Studio version?
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jasonhanley

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Re: Resolve can't play a standard .h264 clip

PostMon Dec 06, 2021 4:09 pm

stesin wrote:Is it free Resolve version or paid Resolve Studio version?


Paid Studio version.
Resolve Studio 18.0.4
Acer Predator Helios 300, i7-9750H, 16GB RAM
Windows 10 Home 64-bit 21H1 19043.2130
GeForce GTX 1660Ti 6GB, Studio driver 522.30
Intel UHD 630, driver 30.0.101.2111
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jasonhanley

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Re: Resolve can't play a standard .h264 clip

PostMon Dec 06, 2021 4:11 pm

Charles Bennett wrote:I think you will find it's because the sample rate is 32khz. Try converting it to 48khz with either Handbrake or Shutter Encoder.


Yeah, I think you're probably right, although it doesn't make much sense.

I did end up converting it with Handbrake, but it's just a pain to have to do this for every clip. They're really long and there's a lot of them! :P

Perhaps someone at Blackmagic could look into this. The file must be relatively within spec since all the other software out there can play it.
Resolve Studio 18.0.4
Acer Predator Helios 300, i7-9750H, 16GB RAM
Windows 10 Home 64-bit 21H1 19043.2130
GeForce GTX 1660Ti 6GB, Studio driver 522.30
Intel UHD 630, driver 30.0.101.2111
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stesin

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Re: Resolve can't play a standard .h264 clip

PostMon Dec 06, 2021 8:55 pm

jasonhanley wrote:I did end up converting it with Handbrake, but it's just a pain to have to do this for every clip. They're really long and there's a lot of them! :P
Maybe ffmpeg will do a better job? I use it daily in a script/batch mode, just to convert videos taken by smartphones, they are H.264 video but with AAC sound; sound transcoding goes painlessly and is fast.
Blackmagick DaVinci Resolve Studio 17.4.6
Blackmagick Speed Editor USB cable connected
Linux Ubuntu 22.04 (5.18.14)
Asus G750 i7-4860HQ 32GB RAM
NVidia 980M 8Gb (510.85.02 CUDA: 11.6)
2x166GB SSDs in RAID0 - DVRS Caches
1x4TB Samsung EVO 870 SSD

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