Oddity Archive: Episode 277.3 - How To Unstretch Video (via HandBrake) (A Minisode)
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- Опубліковано 3 жов 2024
- For us old fartknockers that haven’t yet warmed up to stretch-o-vision…
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You can do it using FFMPEG without re-encoding, so it will be very fast and there will be no quality loss. I showed how in my video "Cheap composite video to HDMI converter - Is it really THAT bad?". But if your goal is to encode the final result in Handbrake anyway, then this is useful advice to fix what I call "fathead mode".
to be fair, ffmpeg requires a bit of messing around with command line switches which are a little esoteric, and not everyone can memorize that stuff
not sure how easy it is to get a batch file going on macOS to automate the process, either
but if you can get it going, it's definitely faster and would be worth it
@@plushifoxed The command line switches are simple when you're just copying the video and audio data and only changing the file's aspect ratio flag, and no batch file is required.
@@vwestlifefair enough! i getcha
@@plushifoxed macOS has shell scripts, so same idea. you can use $1 to take the first argument to the script so you should be able to make it work drag and drop (for single files at a time, a bit more involved scripting could make it do batches of video files). Something like python could probably be used too.
There's probably a way to get a similar setup through handbrake, but i don't use it. It's basically just ffmpeg behind the scenes.
I can't stand how streaming services will take an originally formatted 4:3 tv series, and turn 4:3 tv series to 16:9, thus cropping out some of the video.
I can't believe I laughed at the 'blood vessels' joke.
You posted this right on time, although my project required the opposite. I got a circa 2005 bootleg DVD of revenge of the Sith from a 35mm print, and it was squeezed. Thanks!
I almost this was going to be about how certain TV stations would stretch pictures out for a false widescreen presentation. And how if you're unlucky enough, you get a channel that stretched to widescreen, but get the sides cut off if watching it on an older television. Happened to me all the time when they first switched to digital broadcasts.
This is the MOST USEFUL video I've seen all week. Thanks for this, And whoo man am I gonna be busy this weekend! 👍👍
While this does work, there's a simple fast way to change the aspect ratio without re-encoding, thus preserving the quality and keeping the original 1920x1080 resolution, by using FFMPEG (via Terminal on Mac/Linux or Command Prompt on Windows) to simply change the aspect ratio flag which in turn changes the pixel aspect ratio (essentially squeezing each pixel horizontally rather than re-scaling, thus maintaining sharpness). This would be akin to manually changing the Aspect Ratio setting in VLC during playback, except the change is permanently baked into the file itself. The command is as follows : >> ffmpeg -y -nostdin -i INPUT.mp4 -aspect 4:3 -c copy OUTPUT.mp4
You ever considered trying Deinterlacing the video with Yadif/Bob and export the video on Handbrake in 60fps.. that will help you get the silky smooth VHS/LaserDisc frame rate on your footage.
I use VirtualDub for my stuff, then use Handbrake to compress it as VDub results in a ridiculously large file. Don’t know why UA-cam can’t make it standard to show everything in the native frame rate, but I’ve uploaded a lot more stuff since I learned how to do that.
Thank you for this Ben, it’s very useful.
Did I detect a subtle Kate Bush reference in the closing or am I imagining it?
I like to use MPEG streamclip for these things :)
That is nice to know. I will need to remember this.
Great tutorial, Ben! I did this a lot with my videos while capturing commercial breaks and others. Ripping and Correcting its aspect ratio to 4:3 instead of 16:9 with "OBS Studio" and "Handbrake", encoding them in HD at 1440x1080p resolution (sometimes in 60fps instead of 29.97). Even other editing tools like "Windows Movie Maker", "Freemake Video Converter" and "MPEG Streamclip" that I used to edit and convert them to .mp4 files. Before uploading them to "UA-cam" and "BitChute". Sometimes, you had to de-interlace to avoid scaling.
You might as well upscale the footage, using Topaz, if you are literally upscaling it in a video editor or handbrake.
Thx for this tutorial :D
I do the same thing but in Avidemux instead (I'm just more used to its GUI having used it for nearly 15 years).
There's only one thing worse than stretch-o-vision when it comes to video archiving and that's video that has been crudely cropped to fit the incorrect aspect ratio. At least a stretched picture can be fixed... you ain't getting those lost bits of picture back easily.
A cute test named Ben
BB_43AR_Demo.mp4
Your situation & mine are the exact opposite. I want to take 4:3 aspect ratio content and convert it to 16:9 but *WITHOUT* everyone(people) in the clip being stretched sideways. This I *CAN* do by using Cyberlink Power Director's *CLPV* function. This function will take a 4:3 aspect ratio video clip and stretch it out to 16:9 *WITHOUT* the people in the clip appearing as if they've *raided their refrigerator!*
That’ll just make the sides stretched out while leaving the center normal. Don’t know what’s so difficult about just keeping it in 4x3.
@@TheMediaHoarder You've never seen CLPV work, obviously. The image from 4:3 aspect videos is stretched out mainly horizontally but also slightly vertically so as to give the image uniform proportionality. I've used it and I'm amazed how it works!