logo

Live Production Software Forums


Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Options
Go to last post Go to first unread
Clint Cruz  
#1 Posted : Saturday, April 25, 2020 3:30:05 AM(UTC)
Clint Cruz

Rank: Member

Groups: Registered
Joined: 4/24/2020(UTC)
Posts: 10
United States
Location: Garden Grove

Thanks: 3 times
I have a question. I have a MP4 File that im sharing and i have about 4 locations where i would like to bookmark on the video. At certain time of my live stream i want to play book mark #1 then at another time i want to play bookmark number 4.... then at another instance play Bookmark #3... So what im asking if i already know the timestamp of the videos and want to play them at certain times of my livestream, how can i trigger it to play at that timestamp (Bookmark)?

I hope i explained it properly.

Thanks.
IceStream  
#2 Posted : Saturday, April 25, 2020 1:04:31 PM(UTC)
IceStream

Rank: Advanced Member

Groups: Registered
Joined: 3/7/2012(UTC)
Posts: 2,600
Man
Location: Canada

Thanks: 33 times
Was thanked: 501 time(s) in 470 post(s)
@ Clint Cruz

Shortcut ===> SetPosition (Value = milliseconds)



Ice
Clint Cruz  
#3 Posted : Sunday, April 26, 2020 11:39:41 AM(UTC)
Clint Cruz

Rank: Member

Groups: Registered
Joined: 4/24/2020(UTC)
Posts: 10
United States
Location: Garden Grove

Thanks: 3 times
I was able to use the ShortCut using the Set Position... It works! but when i calculate my time to play the video, its not as accurate as i hoped it would be. when i input the time in milliseconds it still is off a few seconds? why is that? what am i missing or having issues with?

thanks again ice for the help so far.
IceStream  
#4 Posted : Sunday, April 26, 2020 2:22:29 PM(UTC)
IceStream

Rank: Advanced Member

Groups: Registered
Joined: 3/7/2012(UTC)
Posts: 2,600
Man
Location: Canada

Thanks: 33 times
Was thanked: 501 time(s) in 470 post(s)
@ Clint Cruz

Unfortunately, .mp4 files are not going to be frame accurate and will likely only go to the closest “reference” frame in the recording.



Ice
stigaard  
#5 Posted : Sunday, April 26, 2020 5:24:44 PM(UTC)
stigaard

Rank: Advanced Member

Groups: Registered
Joined: 5/20/2015(UTC)
Posts: 493
Man
Denmark
Location: Copenhagen, Denmark

Thanks: 378 times
Was thanked: 100 time(s) in 79 post(s)
As Ice states, .mp4 files encoded in H.264 it is not frame accurate when attempting to playback on specific milliseconds position. However, keeping the Key Frame Interval short, e.g. 1 second (30 frames for 30p video, 60 frames for 60p) or lower, and also ensuring that the video file is stored on fast storage like SSD or flash, will give a better chance that the video file is played back more accurately.
Users browsing this topic
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.