- Posts: 8
- Joined: Tue Mar 31, 2015 8:30 pm
Hi!
I´ve been trying to digitise my VHS tapes lately, and I´ve run into a problem using Blackmagic Media Express. I want to capture the video from the VHS, which seemed to go well.
However, upon playback I discovered that there´s a severe video delay that increases the longer into the video I get.
I´ve tried all the available capture formats. Each one creates a video delay, but the length of the delay differs.
I did a trial of many the formats, and in a 15 minute test these were the video delays (by the end of the video):
ProRes HQ: 32 second delay
ProRes LT: 6 second delay
ProRes Proxy: 12 second delay (oddly)
Uncompressed YUV 8-bit: More than 30 seconds delay
DVCPRO50: 2 seconds
So as you can see the delay is catastrophic pretty much all over the board.
Is this the fault of my mac?
Is this the fault of the program?
Something else? Your help is very much appreciated!
Specs of my mac:
Processor: 2,4 GHz Inter Core i5
Memory: 8GB 1600 MHz DDR3
BlackMagic Media Express version: Version 3.3.2, Desktop Video 10.3.7
EDIT: I´m using the BlackMagic Intensity Shuttle as the middleman between my VCR and my mac.
EDIT 2: I realise I´ve made it sound like the audio lags behind the video, while in reality it is the video that lags behind the sound. So it´s a video delay, not an audio delay.
Thank you very much!
Amund Raknes
I´ve been trying to digitise my VHS tapes lately, and I´ve run into a problem using Blackmagic Media Express. I want to capture the video from the VHS, which seemed to go well.
However, upon playback I discovered that there´s a severe video delay that increases the longer into the video I get.
I´ve tried all the available capture formats. Each one creates a video delay, but the length of the delay differs.
I did a trial of many the formats, and in a 15 minute test these were the video delays (by the end of the video):
ProRes HQ: 32 second delay
ProRes LT: 6 second delay
ProRes Proxy: 12 second delay (oddly)
Uncompressed YUV 8-bit: More than 30 seconds delay
DVCPRO50: 2 seconds
So as you can see the delay is catastrophic pretty much all over the board.
Is this the fault of my mac?
Is this the fault of the program?
Something else? Your help is very much appreciated!
Specs of my mac:
Processor: 2,4 GHz Inter Core i5
Memory: 8GB 1600 MHz DDR3
BlackMagic Media Express version: Version 3.3.2, Desktop Video 10.3.7
EDIT: I´m using the BlackMagic Intensity Shuttle as the middleman between my VCR and my mac.
EDIT 2: I realise I´ve made it sound like the audio lags behind the video, while in reality it is the video that lags behind the sound. So it´s a video delay, not an audio delay.
Thank you very much!
Amund Raknes
Last edited by Amund Raknes on Thu Apr 02, 2015 12:48 pm, edited 2 times in total.