I have a video what i recorded by webcam.
And the video jump some second frekvently, maybe cause of the lag when recorded. Now i have sound more than one hour, and a video half an hour.
Can i somehow sync the sound?
I try to delete the audio where the frames jump, but no luck.
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You'll probably have split it into sections and sync each piece separately
I am newbie, how i can do it?
Maybe split every five minute, and try to move the sound to match?
Probably something like Avidemux. Open your video, leave the video as "copy" (on the left)
and set the audio to PCM. You can use Audio Output /filters/shift audio. You can set - or + to advance/delay the audio
use the A and B markers to set the clip for the first piece that remains in sync.
Save it as clip 1. Move the A and B markers to the next part, recheck (by playing it) and adjust the sync and continue until the end.
Why would a webcam lag the system while recording? Perhaps you should use mediainfo (in View>text) to examine the video/audio properties and post
the information here
Last edited by davexnet; 26th Oct 2021 at 16:33.
This is the video info.
Format : MPEG-4
Format profile : Base Media
Codec ID : isom (isom/iso2/mp41)
File size : 210 MiB
Duration : 1 h 9 min
Overall bit rate mode : Variable
Overall bit rate : 423 kb/s
Writing application : Lavf57.83.100
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main@L5.1@Main
Codec ID : hev1
Codec ID/Info : High Efficiency Video Coding
Duration : 34 min 10 s
Bit rate : 824 kb/s
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 20.000 FPS
Minimum frame rate : 19.608 FPS
Maximum frame rate : 20.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Bits/(Pixel*Frame) : 0.020
Stream size : 202 MiB (96%)
Codec configuration box : hvcC
ID : 2
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 1 h 9 min
Bit rate mode : Variable
Bit rate : 16.0 kb/s
Maximum bit rate : 128 kb/s
Channel(s) : 1 channel
Channel layout : C
Sampling rate : 16.0 kHz
Frame rate : 15.625 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 7.96 MiB (4%)
Default : Yes
Alternate group : 1