ffmpeg -i input.mp4 -c:v mpeg2video ` -brand mp42 ` -vf "scale=1280:720,select=gte(n\, 2),tpad=start=2,fps=fps=source_fps" ` -profile:v main -level:v 4.0 ` -colorspace:v "bt709" ` -color_primaries:v "bt709" ` -color_trc:v "bt709" ` -color_range:v "tv" ` -qscale:v 5 ` -video_format component -g 2 ` -an ` -f mp4 input.mp4.sfvp0
Hi all,
is this ffmpeg command (via Powershell) correct to produce a proper Vegas proxy file?
I need to use ffmpeg and FFAStrans to batching creation...
ps:
Thanks!
ffmpeg -i video.mp4 ` -c:v mpeg2video ` -brand mp42 ` -vf "scale=1280:720,select=gte(n\, 2),tpad=start=2,fps=fps=source_fps" ` -maxrate 35000k ` -bufsize 35000k ` -profile:v main ` -level:v 4.0 ` -colorspace:v "bt709" ` -color_primaries:v "bt709" ` -color_trc:v "bt709" ` -color_range:v "tv" ` -qscale:v 5 ` -video_format component ` -g 2 ` -an ` -f mp4 video.mp4.sfvp0
updated script
Hi! That was my old post.
I'd like to do a XDCAM 35 file this time, like a proper Vegas file but via ffmpeg
Ok. Some good info in that link.
To my mind this appears (see link above from 3d87c4) to be a good solution because if I understand the posters method, by proxy he doesn’t mean a proxy identical to VP's proxies rather a dumbed down easier to use file ? That is, a lower resolution version and say avc instead of a hevc source.
“Here's what I do...more or less:
Place original clips in FOLDER1
Create proxies, preferably with identical file names, in FOLDER2. Use these files when editing.
Close Vegas.Rename FOLDER2 to FOLDER3.
Open Vegas. It won't be able to find the proxies because of the folder name change and prompt you to navigate to the folder containing the videos. Navigate to FOLDER1 and it will use the original clips.
If your proxy files have different names than the original clips you will just have to do the navigation step for each clip.
Render.”
It could be easily automated in a batch file.
#1. Drag and drop source folders (Folder1) onto say make-proxy.bat.
#2. Answer Y/N/R prompt to create proxies (Y) and put into Folder2, or rename. Selecting R means editing is done and now rename folder2 to Folder3. Selecting N means exit do nothing.
Anyway, something like that.
Thanks for your help.
My problem is that when I switch from proxy version to non proxy version the frames are not perfect synched.
I'm using the the method with taken, no Vegas official method.
Later I'll post a video example
I wasn't aware of that. I'm curious to see example of source and proxy samples and difference.
To add to my suggestion above (3d87c4) I think that most machines can handle a 1920 source ok.
With that in mind I would use avc "proxies" with Width for all source media of 1920 maintaining aspect ratio. Audio included of course as it's proxies in name only, using cut down source files without proxies!
I wouldn't expect any frames sync issue using this method?