- Posts: 1
- Joined: Wed Jun 24, 2020 2:45 pm
- Real Name: Dan Tappan
Tue Jul 20, 2021 4:21 pm
I am seeing sound sync issues when I try to edit some videos downloaded from Youtube. I've mostly seen the problem with videos of recorded Zoom live-streams
The symptom is that when I load the video into DaVinci Resolve the sound is out of sync with the video, sometimes by 10's of minutes on a long video. If I play the video in Quicktime, or load it into iMovie, the sound sync is fine.
It is possible that it's related to the fact that the audio tracks seem to be 22/44.1K rather than 48K, see below.
I've tried changing the sound settings in Project Settings, both before and after importing the video file with no effect.
I _think_ this may have started with one of the latest version 17 upgrades. I don't recall any issues like this under version 16, and I think the original 17 release may have been fine (but don't remember for sure).
Does anyone know if there is a workaround for this problem? Other than using iMovie to edit these videos, which is my current workaround
DaVinci Resolve: version 17.2.2 build 4
MacBook Pro (15-inch, 2016) 16GB, Radeon Pro 455 2 GB
MacOS Big Sur 11.4 (20F71)
File: /Users/dan/Downloads/July 19 Ellen Schmidt's Open Mike.mp4
File type ID: mp4f
Num Tracks: 1
----
Data format: 2 ch, 22050 Hz, 'aac ' (0x00000000) 0 bits/channel, 0 bytes/packet, 1024 frames/packet, 0 bytes/frame
no channel layout.
estimated duration: 10678.578503 sec
audio bytes: 64071655
audio packets: 229944
bit rate: 48000 bits per second
packet size upper bound: 447
maximum packet size: 447
audio data file offset: 2996
not optimized
audio 235462656 valid frames + 0 priming + 0 remainder = 235462656
format list:
[ 0] format: 2 ch, 44100 Hz, 'aach' (0x00000000) 0 bits/channel, 0 bytes/packet, 2048 frames/packet, 0 bytes/frame
Channel layout: Stereo (L R)
[ 1] format: 2 ch, 22050 Hz, 'aac ' (0x00000000) 0 bits/channel, 0 bytes/packet, 1024 frames/packet, 0 bytes/frame
Channel layout: Stereo (L R)
The symptom is that when I load the video into DaVinci Resolve the sound is out of sync with the video, sometimes by 10's of minutes on a long video. If I play the video in Quicktime, or load it into iMovie, the sound sync is fine.
It is possible that it's related to the fact that the audio tracks seem to be 22/44.1K rather than 48K, see below.
I've tried changing the sound settings in Project Settings, both before and after importing the video file with no effect.
I _think_ this may have started with one of the latest version 17 upgrades. I don't recall any issues like this under version 16, and I think the original 17 release may have been fine (but don't remember for sure).
Does anyone know if there is a workaround for this problem? Other than using iMovie to edit these videos, which is my current workaround
DaVinci Resolve: version 17.2.2 build 4
MacBook Pro (15-inch, 2016) 16GB, Radeon Pro 455 2 GB
MacOS Big Sur 11.4 (20F71)
File: /Users/dan/Downloads/July 19 Ellen Schmidt's Open Mike.mp4
File type ID: mp4f
Num Tracks: 1
----
Data format: 2 ch, 22050 Hz, 'aac ' (0x00000000) 0 bits/channel, 0 bytes/packet, 1024 frames/packet, 0 bytes/frame
no channel layout.
estimated duration: 10678.578503 sec
audio bytes: 64071655
audio packets: 229944
bit rate: 48000 bits per second
packet size upper bound: 447
maximum packet size: 447
audio data file offset: 2996
not optimized
audio 235462656 valid frames + 0 priming + 0 remainder = 235462656
format list:
[ 0] format: 2 ch, 44100 Hz, 'aach' (0x00000000) 0 bits/channel, 0 bytes/packet, 2048 frames/packet, 0 bytes/frame
Channel layout: Stereo (L R)
[ 1] format: 2 ch, 22050 Hz, 'aac ' (0x00000000) 0 bits/channel, 0 bytes/packet, 1024 frames/packet, 0 bytes/frame
Channel layout: Stereo (L R)