Go Back    Forum > Digital Video > Video Project Help > Encode, Convert for streaming

Reply
 
LinkBack Thread Tools
  #1  
09-15-2018, 04:56 AM
Eric-Jan Eric-Jan is offline
Free Member
 
Join Date: Aug 2018
Location: Netherlands,
Posts: 421
Thanked 56 Times in 51 Posts
Only small problem, when i'm going to compress to MP4 codec coding, resolution format size gets slighty changed, also when i upload to Youtube (PAL/NTSC?) I capture PAL 625 progessive component output from Panasonic VCR, why is this ? aspect ratio seems in good proportions...

https://www.youtube.com/watch?v=QVh0...&frags=pl%2Cwn
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Ads / Sponsors
 
Join Date: ∞
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
09-15-2018, 05:15 AM
lordsmurf's Avatar
lordsmurf lordsmurf is offline
Site Staff | Video
 
Join Date: Dec 2002
Posts: 13,503
Thanked 2,449 Times in 2,081 Posts
I download the Youtube file, and it show an AR of 492x360, which is not 4x3 (480x360=4x3).

Did you upload a stream-ready file, or just let Youtube do what it wanted with the source file?

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
Reply With Quote
  #3  
09-15-2018, 05:28 AM
Eric-Jan Eric-Jan is offline
Free Member
 
Join Date: Aug 2018
Location: Netherlands,
Posts: 421
Thanked 56 Times in 51 Posts
yes, i did not condition it for Youtube, resolution format is now where i struggle with, my wish would be to keep with it to 480 (NTSC?) PAL 576p 720, 1080, 1920, format "numbers" when i "download" movies i also see diferent formats, but ratios are correct 16:9 4:3 i guess it's some calculating to keep things fine,
and keep pixels square not rectangular, that's for anamorphic, anamorphic i also need to figure out, for a lens i have for my G7 (Lumix) although i have one good result.
Reply With Quote
  #4  
09-15-2018, 05:34 AM
lordsmurf's Avatar
lordsmurf lordsmurf is offline
Site Staff | Video
 
Join Date: Dec 2002
Posts: 13,503
Thanked 2,449 Times in 2,081 Posts
You need to pre-encode it for Youtube, including 4x3 resolution change. Use a high bitrate, and then let Youtube shrink it down if it wants, don't bother trying to overly compress it yourself.

Don't worry about square/rectangle pixels in the SAR, just focus on the visual DAR (display aspect ratio, using square measurements).

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
Reply With Quote
  #5  
09-15-2018, 05:57 AM
Eric-Jan Eric-Jan is offline
Free Member
 
Join Date: Aug 2018
Location: Netherlands,
Posts: 421
Thanked 56 Times in 51 Posts
Thanks, high bit rates i previously tried to avoid because of big filesizes or bad on decoding for playback.
i now see this in an other light, thankyou, i will do some studies about ratios and how that translates into horizontal and vertical amount of pixels, also the proportions of a capture and what to crop/mask to remove the "untidyness" of the outside borders.
todays, PAL 625 (analog) is all ? and 576 digital is all ? or without the "dirt" ? that puzzles me, also is NTSC 480 or 486 4:3 ?
Getting the capture is no problem i guess
Reply With Quote
  #6  
09-15-2018, 06:01 AM
lordsmurf's Avatar
lordsmurf lordsmurf is offline
Site Staff | Video
 
Join Date: Dec 2002
Posts: 13,503
Thanked 2,449 Times in 2,081 Posts
The normal sizes for 4x3 from VHS is 720x540 (PAL) or 640x480 (NTSC). But you can do whatever you want, as there's really no set specs. Youtube will do 360p or 480p...

... meaning you need to deinterlaced properly while prepping the file. On a Mac, and not using Avisynth inside Windows VM, you other best choice is Yadif. Avidemux is pretty good at filtering everything, and the Mac version works well and is stable.

I don't see an issue with the captures, no.

- Did my advice help you? Then become a Premium Member and support this site.
- For sale in the marketplace: TBCs, workflows, capture cards, VCRs
Reply With Quote
The following users thank lordsmurf for this useful post: Eric-Jan (09-15-2018)
  #7  
09-15-2018, 06:13 AM
Eric-Jan Eric-Jan is offline
Free Member
 
Join Date: Aug 2018
Location: Netherlands,
Posts: 421
Thanked 56 Times in 51 Posts
Did not do anything yet on this latest capture, interlace problems i do not have because my vcr already outputs progressive over the component output, so deinterlacing is done by the vcr, and comb is also on, on the vcr, i will look if this comb filter really matters with progressive on. i capture with Media Express on my macbook, Davinci will only capture interlaced and has no sound with the capture i do, so i will keep capturing with Media Express in progressive.

-- merged --

Just updated also Avidemux here, but it still doesn't accept my captured .mov file, ProRes422 LT

Thankyou, yeah was in doubt to edit first too.
just googled for ProRes and Avidemux and found that this indeed does not work, so no go in this case, I can try maybe a Avid codec some time, if needed in my case.

Last edited by Eric-Jan; 09-15-2018 at 06:52 AM.
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Let Youtube encode interlaced VHS capture? Mejnour Project Planning, Workflows 8 02-06-2019 02:37 AM
Help with optimal YouTube upload format/settings? Zoink187 Encode, Convert for streaming 5 03-27-2014 12:10 AM
Forums re-organized slightly admin General Discussion 0 01-03-2011 06:54 PM
Recommended upload video format for maximum sound quality on youtube waigy Encode, Convert for streaming 21 09-01-2010 03:37 PM
How to capture Youtube FLVs? gatch72 Encode, Convert for streaming 7 07-12-2006 11:28 AM

Thread Tools



 
All times are GMT -5. The time now is 06:45 PM