Is it possible to make a 30–50 second high-quality webm under 4 MB?
What software do you use to make webms?

>>29260693 (OP)
Why make webms at all when mp4s have been postable for over a year?

>>29260705
>Why make webms at all when mp4s have been postable for over a year?
Because mp4 sucks. WEBM has superior compression, which matters a lot when you're trying to get as much as possible out of a mere 4MB.

>>29260693 (OP)
>30–50 second
no 15-20 seconds is your upper limit before pixelation sets in during high motion

>>29260705
mp4 has worse compression and is the mark of the offsite fag who reposts shit from elsewhere on the internet to 4chan

the only way to keep /gif/ great is to make OC and not repost trash from elsewhere otherwise /gif/ becomes like offsite

>>29260693 (OP)
If you don't want to sacrifice quality or length you'll have to sacrifice resolution.
https://trac.ffmpeg.org/wiki/Encode/VP9

i don't understand the insistence on longer videos
longer videos = lower bitrate due to the filesize limit
just cut your videos shorter. you can always compensate for shorter videos but never compensate for lower bitrate videos

>>29260693 (OP)
>Is it possible to make a 30–50 second high-quality webm under 4 MB?
Yes. To get the best results, make sure your source video is in the best quality possible to begin with. Even though VP8 and Vorbis are supported for video and audio (respectively), you should use VP9 and OPUS for the most optimal results. Have the speed preset set to zero for the slowest but the best results you can, and try to get the bitrate to the highest amount you possibly can to the 4MB limit without going over.

Here's a pro-tip: If you can't keep the bitrate beneath something like 500kbps or so without going over then you might want to consider reducing the resolution. A 720p (or less) video isn't ideal, but these lower resolutions can tolerate a lower bitrate of the video better than a 1080p video can if necessary. If you try to do a 1080p video but with a bad bitrate you'll probably end up with a lot of glitches in the video, so if its going to be like that then just drop the resolution down. That, or chop the video up into multiple videos of less length. Remember, the shorter the video, the higher the bitrate you can milk out of it. Try to find the best balance for whatever you're working with.

When it comes to audio, if you find it doesn't really add anything you can probably remove it entirely in many cases without much of value being lost. This lets you dedicate more to video. With the OPUS codec you can get good results out of just 32Kbps, so that might be all you need to dedicate for audio in most cases.
>What software do you use to make webms?
For simple straightforward conversions:
https://github.com/n00mkrad/nmkoder

For more involving video editing:
https://shotcut.org/

Both of these programs are 100% free.

>>29260802
This. I think it was a bad move adding support for mp4, because that opened the floodgates to newbs spamming a bunch of low quality slop and diluting the quality of everything.

The support which should have been added instead of that is support for AV1, which has a 30% efficiency improvement over VP9.

>>29260693 (OP)
depends on what's going on onscreen and what you define as high-quality

VP9 instead of VP8 is a great way to start

i personally advocate for the use of editing software to create splitscreens because most production companies abide by the rules of third, which means that there is typically 2/3rds of the screen not dedicated to the subject matter and that lets you squeeze in two additional videos in for the size of one

it does lead to audio issues obviously now cause you're dealing with three audio channels, but you can easily find a backing track

>>29260834
>because that opened the floodgates to newbs spamming a bunch of low quality slop and diluting the quality of everything.
not just that but there seems to be an effort to make 4chan less 4chan and more like offsite

>>29260693 (OP)
I'm reposting my comment from the "Where else do you get your webms from?" thread.

Redgifs or reddit. Sometimes I will make a clip from a larger mp4 file (e.g. Slut Puppies vol 5)
Download from web using Jdownloader2
Preview clips for quality (good action) and put those clips in a folder.
Trim clip length using WebmConverter 3.3.0 (from github I think). Target length is less than 40 seconds. 60 is pretty much a hard cap. Anything with lots of motion (walking on a beach with moving background) will create a lot of ugly pixelation so maybe 20 second cap on those types of clips. You can also increase or decrease audio with this which is great. Some clips are too loud or too quiet.
Convert to webm using WebmGenerator 3.41.1 (github). I prefer webms but who cares. You can select output as mp4. If the clip has no audio or the audio is rap music, select No Audio from Merge tab "Audio Channel" drop-down.
Strip Metadata "tags, title" using mp3tag program. Only filenames remain.
Edit filename manually or use Bulk Rename Utility ($10 or less from their website). I love this program but you absolutely have to check your edits before closing the program. There is no "undo changes" options once you close/reopen the program. Sometimes BRU saves the previous settings from your last edit so you have to be methodical about opening the program and clicking the RESET button which clears all function commands. It is best to use this program only on copies of files until you master the program.
Final review of webm before publishing. It has to be perfect or I redo it. Absolutely no watermarks besides OP watermarks. No running script or chiron scrolling across the video of some re-upload website. Find the original and make the clip from that if there are BS watermarks.
Sorry no webm. I'm traveling.

>>29260824
good post
and as an addenum: webm quality will also depend on your source material. If you download videos from a streaming site and use those to make webms they will end up looking like shit because streaming sites use the bare minimum bitrate to save on bandwidth so you need to be downloading siterip quality in order to make quality looking webms

>>29260900
see above

>>29260705
WEBMs with VP9 have much better compression than MP4 with H264

Why would you make such a brain damaged comment about a subject you clearly know nothing about?

>>29260693 (OP)
ffmpeg is your friend here but its not the simplest thing to use. If you really want to optomize then you have to learn to use ffmpeg. Failing that you can use a simple GUI editor like Kdenlive

"webm for retards" never let me down so far
easy to use, you can cut by frames, crop, rotate, slow down, add subtitle all with minimal but useful UI

>>29260824
might be nice to note you can drop framerate to low 20's around 22-25 without noticable difference in quality for most clips

>>29260722
>>29260732
she must need a colostomy bag by now

>>29261038
but why is your exporter messing with the aspect ratio

>>29260693 (OP)
Webmgenerator
https://github.com/dfaker/WebmGenerator
project of a /gif/ poster in 2020. Just drag a video onto the exe. Far more respectful of your time than most editors and one-handed workflow make it my first choice for this hellhole. Vegas if I need something more professional. Haven't bothered making a script for ffmpeg in years.

>>29260693 (OP)
>Is it possible to make a 30–50 second high-quality webm under 4 MB?
not reliably. VP9 is alright but 4MB just isn't much to work with.

>>29261275

No

>>29260882
This is a great example of how video compression algorithms work: by only storing the changes between frames. if large parts of your video never/barely change (see the almost static backdrop here and barely moving face), that's a huge amount of saved space, hence the quality + length here.

>>29262188
that's a longwinded way of saying
>the more motion the data (bitrate) required

720p
1 min 41 sec
VP9
No audio

>>29262215
vid looks good during the low motion parts but quality drops off a cliff and the pixelation kicks in and that is the worst kind of video, it tricks you into thinking it looks good then it goes to shit

>>29262224
Obviously, the "decent quality" limit for 720p at 4MB is around 1 min, depending on the amount of action. You can only do so much.

>>29262242
again it is the worst kind of video. it lures you with the pretense of good quality

>>29260824
I personally despise shotcut's interface.

>>29262726
you know you can move all the menus around right?

>>29262802
I'll move your menus around punk

i maek dis

>>29260775
webm and mp4 are containers that can pack a number of different video streams. The compression is based on the underlying video stream. Webm can use VP8 or VP9 for the video stream, which will result in wildly different qualities. Same goes for mp4, which can use either h264 or h265. Again, wildly different qualities.

>>29260900
Linux Mint Anon checking in. Just download A/V Linux. Which is what it sounds like. Its meant to be run live, and do video editing among other things. I like AVIDEMUX (easy) and CIN (hard). MP4's are easier to make.

It depends on the video. More motion = worse for compression.

>>29260900
>jdownloader instead of yt-dlp
>trim using one version of a ffmpeg front-end and and convert using another version of the same ffmpeg front-end
>strip metadata when this site already does it
>buy bulk rename utility for $10
what the fuck m8

Hey there, I'm a 21-year-old girl from the States, pretty adventurous and always up for some wild chats. I love taking control and teasing guys until they can't take it anymore. It's such a thrill to push boundaries and share those steamy moments. I might be a little shy in person, but when it comes to messaging, I really come alive! I'm looking for some fun and flirty convos, so if you're into that vibe, hit me up. Just add me on the app, but make sure to remove the spaces and dashes in my username: e-m-aq-uo-n x. Can't wait to chat!

>>29260775
>Because mp4 sucks
retard detected

>>29263285
Those containers can support even more than that, but the only thing that matters in the context of this discussion is what this board supports. Just because this board supports those containers doesn't mean it supports every possible codec those containers can potentially use.

>>29264269
The retard is you. MP4 is a garbage-tier shithole format. WEBM is technologically vastly superior.

>>29261058
That would probably be becuase I fucked up the scaling
Here you go, with proper scaling I can bump up the length, I could probably push this to 1:40 but I'm bored of this

>>29260702
>>29260722
Dude is just skin, bones and a ludicrous humongous dick.
Can't say I'm not jealous of him.

ffmpeg -i full-hd-input.mp4 -c:v libvpx-vp9 -b:v 0 -r 35 -crf 30 -pass 1 -an -f null /dev/null && ffmpeg -i full-hd-input.mp4 -c:v libvpx-vp9 -b:v 0 -crf 35 -pass 2 -c:a libopus -b:a 64k -filter:v scale=800:-1 output.webm

>>29264591
You should be able to get away with -r 24 since most mp4's are already stored around 30 fps anyway the -r 35 on your first pass isn't likely doing much and your eyes won't notice the ~20% drop in frame rate but your file size will

Also you can drop your audio from 64k to something like 32k or even 24k withouth much noticable drop in sound since we are probably more focused on visual here.
All of this will allow you to drop your -crf on your second pass a bit to maybe 30 or if your lucky 25 on your second pass

>>29260693 (OP)

I use ffmpeg scripts for a few different actions. The main ones are scale and make_x_mb.

scale
make_x_mb
make_x_seconds (speeds it up)
remove_black_bars
strip_audio
etc

>>29264014
>jdownloader instead of yt-dlp
I have that also and have done bulk rips of pornhub pages using that. Thank you for reminding me. I've been traveling a lot the last 2 years and am completely zonked out. I wrote my initial post on the fly, squatting over my laptop and briefly looking at my Webm Tools folder with all of my programs so I could give specifics. YT-DLP is awesome.
>trim using one version of a ffmpeg front-end and convert using another version of the same ffmpeg front-end
Right, eesh. Tbh, I'm not good at trimming using WebmGenerator. I've done it several times before. Especially when I've done a couple of 'quickcut' style edits of the same scene and crunching it down to 30 seconds or so and merged all clips into one output file with transitions. Cropping and rotating on WebmGenerator is a complete mystery to me, though. I see the functions but can not apply them. This is a skill issue, and I should probably invest some time on learning WebmGenerator things when I have more time.
>strip metadata when this site already does it
I thought VP9 hangs on to the 'title', no? Maybe something has changed on /gif/. So, you could download a webm with filename 123.webm and in, say, VLC it would have the title 'something, something'. It used to be this way, anyway. I think chan scrubs VP8 but keeps VP9 title? I can't remember but when dragging a bunch of webms into mp3tag I used to find source data from the title metadada column and do a tag transfer title to filename and that was nice.
>buy bulk rename utility for $10
Probably the best $10 I've ever spent. This is a niche program and I absolutely love it. As previously mentioned, you have to review your changes before closing the program because once the program closes - the undo changes option is closed. I have about 200 webms with the first character deleted that I am slowly trying to fix by resourcing. Sourcefagging, I know.
I haven't found a program that comes close to what this can do.

>>29260900
>>29264014
bulk rename is free bro. don't tell me you paid for that

>>29260900
>Sometimes BRU saves the previous settings from your last edit
i fixed this by making the settings file read-only

>>29264825
> I haven't found a program that comes close to what this can do.
shell script?
If you are savy enough to figure out this while workflow you should be savy enough to ask chatgpt how to bulk rename while saving history

>>29264827
>bulk rename is free bro. don't tell me you paid for that
Holy shit, that was a fast reply. I bought it around 2009-2011. AFAIK, there was, at least at that time, a free trail version that allowed a certain amount of edits then it crapped out or stopped working. I can't quite remember what the drill was but after seeing what I could do - which is exactly what I needed, I bought a key. I think I tried finding a cracked version but didn't have any luck.
>Sometimes BRU saves the previous settings from your last edit
>i fixed this by making the settings file read-only
Wow, you might be a wizard. I'm going look into this for sure! If I can have a 'blank slate' every time I open BRU, I would be so happy. Wow, wow, wow.

>>29264865
I'm not savy enough but definitely interested in learning more. I've never asked chatgpt anything but I have seen some interesting screencaps of what people are able to do with chatgpt. I understand how resourceful it can be though. I'm just buried up to my neck in other responsibilities lately so I don't have much time to participate or even think about much these days. I'm ziplineattack#6020 on discord if you want to connect and talk shop or whatever else. I was trying to share a discord server for gif things but chan is making it difficult even if I break up the link.

>>29264875
Here are my MEGA folders. It is just a junk pile of files I uploaded about 2 years ago in case anyone is interested. There is so much more on my PC that is better organized but this is what I have available right now.

Ass
mega nz [slash] folder [slash] FwUwiYzB#NwiUlXH0SYcvqMdK32Id6g

Tits
mega nz [slash] folder [slash] MpcDTIAB#7xQ0mpSOlEl-qlI1MYGy5Q

Here is what I use to resolve duplicates in my collection. I set similarity percentage to 93 (settings tab) and always manually select and delete files. I highly discourage using VDF.GUI's auto-select duplicates feature. You'll accidentally delete stuff that isn't an actual duplicate.
github com [slash] 0x90d [slash] videoduplicatefinder

>>29260693 (OP)
>Is it possible to make a 30–50 second high-quality webm under 4 MB?
Yes it is possible.
What do you consider high quality? That's subjective.
"ffmpeg" is the standard to convert any video type into another one. It's a command line utility in Linux and Windows but there's a lot of graphical user interfaces that basically allow you to set up the transformations on the video, and then call "ffmpeg" in the background to execute them, like Handbrake, Shotcut, Kdenlive, Blender, and many others.
"Quality" is a matter of "details per second", which in practice is "bitrate". The higher the bitrate the more information you are encoding into your file, and thus you will get better visual quality (subjective), but also the file size will be larger. So you basically need to reduce the bitrate as much as possible so that the file size is smaller while retaining sufficient visual quality (subjective taste).
The other big thing is resolution or video size. There's no point in having a large video size 1080p if you will watch the content in a small screen.
So by reducing video size, and bitrate, you can make large videos fit in 4 MB.

>>29263285
>mp4, which can use either h264 or h265.
not every device, PC, operating system, browser, supports H265, so when people say MP4, they normally assume H264.
Meanwhile VP8 and VP9 are well supported so webm with VP9 is clearly better to encapsulate small videos.

>>29260817
laziness

>>29265092
>What do you consider high quality? That's subjective.
fucking retarded midwit take.

Example A: you can clearly see the tear rolling down her cheek

>>29265092
example B: same video but exported in lower quality (bitrate). the detail of the tear is lost as you can no longer see it. example B is of a lower quality. Its not fucking subjective

any Alexis Texas?

>>29265024
zip#6020 actually

>>29264825
>Right, eesh. Tbh, I'm not good at trimming using WebmGenerator. I've done it several times before. Especially when I've done a couple of 'quickcut' style edits of the same scene and crunching it down to 30 seconds or so and merged all clips into one output file with transitions. Cropping and rotating on WebmGenerator is a complete mystery to me, though. I see the functions but can not apply them. This is a skill issue, and I should probably invest some time on learning WebmGenerator things when I have more time.
jesus fucking christ dude just use shotcut if there's an effect you want to do there's a thousand tutorials on how to do that on youtube

>>29263293
Also a Linux mint fag here. I downloaded "Video Trimmer" from Mint's Software Manager. I trim videos to the part that I want, then run it through ffmpeg to convert it to a vp9 encoded webm.
After doing a few you start to get a sense for how much smaller your file will get after compressing to vp9 webm. My goal isn't necessarily getting the longest webm possible, just getting the right clip with the highest quality possible. I don't mid if I'm well under the 4MB limit.

>>29261282
genuinely impressed with this quality. High frame rate, with sound, 25s long, only 3.9MB, even the background should be a lot harder on the compression algorithm.
The only way this makes sense to me is because the aspect ratio, I think if this were 16:9 it would wreck the amount of time you could get out of it.

>>29265309
same bitrate but less pixels to display will yield a higher quality image yes

>>29265236
I understand your frustration. Everything is fine. I'm not doing a lot of editing these days and what little I have done has been pretty easy. It's just about finding a workflow that works for you and not burning too much time. It's a trial and error process and I'm not trying to be the next wankmaterials, this is just a passive, occasional hobby project when I'm in the mood to fiddle around with it. I had not heard of Shotcut before and I'll definitely download and check it out that software soon. I have it bookmarked for now - it looks very interesting.

>>29260705
It doesn't fucking matter. MP4 and WEBM are both containers.

>>29265448
shotcut lets you do everything in a single process

>>29265677
oversimplification

>>29262215
Is that a game?

>>29260824
nikepro webm tools

>>29260693 (OP)
*Use a FFmpeg front end. I've tried them all and Xmedia Recode is the best imo, allows you to do everything including removing watermarks and changing saturation etc.

*Use a high quality source, ideally 4K.

*Around 45 secs is the upper limit but 30 secs is much more reasonable.

*1024x576 is the lowest "looks like HD" aspect ratio. 540p and 480p are also decent but loses some of that sharpness, however are useful if you have to back off to reduce pixelation or blur.

*Lower the frame rate. You can get away with 20 fps for a slow moving scene, but normally 24 fps is the lowest decent fps for a scene with motion.

*Use VP9 webm, 2-pass variable bitrate. OPUS audio with 48 kbps variable bitrate (32 minimum, 64 kbps max).

*The min vid bitrate should be set to a couple of hundred lower than the average bitrate. Max bitrate set to a decent amount, about 1200 for 576p. Over-doing it will make the codec shift from sharp to blurred and unpixelated to pixelated, which is perceived as lower quality than an overall lower bitrate.

*You can feed the video codec, clip length, aspect ratio, fps, audio bitrate and desired file size into Grok and ask for min, max and avg bitrate values to eliminate trial and error.

*Quality set to "best" increases uniformity a tiny bit compared to quality set to "good". Tune can be set to "SSIM" (visual perception) instead of "PSNR" (signal to noise) - SSIM focuses on perceived quality (contrast and removing artifacts) rather than max sharpness. Tune centent type should be set to "film" - this is the most important tune. "Best" and "SSIM" takes significantly longer, so it's a good idea to use "good" and "PSNR" until you're happy with the results and then switch, or skip them altogether unless you really need them.

Picrel: Random clip with 42 secs of complex textures. 1024x576, 20 fps, 2-pass VP9, quality "best", tunes "film" and "SSIM", Opus 32 kbps.

>>29266126
Another random clip. Same settings as above but with lots of motion so 24 fps and shortened to 30 secs. Also 48 kbps Opus because moans.

>>29266137
Identical to the one above but "good" and "PSNR" instead of "best" and "SSIM", so a lot quicker to make. It's not a huge difference.

>>29266137
>>29266144
what about interpolation settings?

>>29266289
Motion compensation? Our actual frame interpolation? Motion is mostly handled by the "film" tune.

nearest neighbor interpolation

>>29266373
Lanczos.

>>29266399
that's the best one?

>>29266416
Yeah.

>>29266445
for all scenes or is it better for high motion?

>>29266450
I think everything. It's the sharpest and most advanced by far.

>>29266144
30 secs 1080p. Only PSNR and good quality, but with the film tune enabled. The slow motion stutter is from the source material.

>>29266492
Extended to 62 seconds by lowering aspect ratio to 480p. Everything else is the same.

>>29266457
noted

>>29266497
720 is really the bare minimum

>>29266582
720x406? Yeah.

You typically don't need to go that low if you enable the film tune though because VP9 with the film tune remove sharpness and detail rather than make stuff pixelated and noisy. And SSIM and best quality allow you to go even a little further because it adds perceived detail with contrast and edge sharpness. If you were to look at the stuff I've posted side by side there's a ton of detail missing but the webms look clean and polished, which is key.

>>29266622
720p i meant

>>29266625
Oh, ok.

Nah, I don't think it makes a huge difference in sharpness to 576p, which retains much more detail at lower bitrates because even though it's a barely perceptible difference in sharpness, there's almost twice as many pixels in 720p.

>>29265102
that really does seem to be the case

>>29265100
Bro even tho webm, vp8 and vp9 and " supported " they still break and not play on many devices for being googleshit. The biggest mistake 4chan ever made was initially choosing to support the faggy webms and vp8 rather than the standard and working perfectly mp4 and h264. This place would have hevc support already if mp4 was in since the start.

^
appleshitter or mobileshitter

call it

>>29267162
is " supported "

>>29260693 (OP)
>Why even bother
4sec clips does nothing for me
/gif/ has been fagg infested like the plague and it keeps getting worse
All we see are the same videos in the same threads for at least the last 10 years
Video files can't exceed 5mb like why bother serieus

>>29267167
Your webmshit constantly breaks when downloaded to media servers, tvs and almost all video tools that arent backed by ffmpeg. Applefags are gay but webm, vp8 and vp9 are fucking shit formats and continue to be in the year of our lord 2025.

>>29267186
works on my machine

>>29267185
>>Why even bother
the site is only as good as you make it to
so be the change you want to instead of complaining impotently

>>29267185
I see a webm as more of a video recommendation, if I like it I'll go after the full video
but yes this shithole is borderline unusable now

>>29267478
well if they actually issued bans instead of warnings to the
>thinly veiled request threads where op posts 3 and then fucks off
>the countless not adult threads like the ylyl, rekt whatever else trash
the board would improve overnight

>>29262915

>>29260824
>nmkoder
Is this better than webmforbakas (webmconverter3.34.0)?

Hey there, I'm a 21-year-old girl from California, and I'm definitely a little on the wild side. I've got a flirty personality and love to take control in conversations. One of my absolute favorite things is turning up the heat and seeing how far I can push someone during our chats. I'm always feeling that spark, but I sometimes get anxious in social situations, so chatting online is my vibe! If you're into some steamy back-and-forth, hit me up! Just add me on my favorite app: em-y-zeth (make sure to remove the spaces and dashes)! Can't wait to connect!

Hey there! I’m a 21-year-old girl from the States, and I love being a little playful and flirty during late-night chats. I’m all about that passionate vibe and enjoy teasing to see just how far I can take things before we both lose it! I can be a bit shy, especially when it comes to meeting new people in person, so I prefer to keep it spicy online! If you’re interested in some fun, add me on 4 n n e r c e s t r e a m. Just make sure to remove the spaces and dashes! Looking forward to connecting with some cool new friends!

>>29260732
Having a big pp isn’t enough for women. Proof.

>>29270353
wow..

>>29270355
just a teaser for the next pro am thread

>>29260705
Who is she?

>>29270366
pro am?

Hey there, I'm a 22-year-old girl from the US, with a little extra curve and a whole lot of sass. I absolutely love the thrill of playful chats, especially when I can tease and push your buttons until you can't take it anymore! I definitely have a wild side and I'm always down for some flirty fun. Going out and meeting new people can be a bit overwhelming for me, so I prefer to spice things up in the comfort of my own space. If you're looking for someone to get naughty with in messages, I'm your girl! Add me on the app: E-m mi-b-l o kz (remove the spaces and dashes to find me). Can't wait to chat and see where things go!

>>29270376
pro(fessional) am(ateur) aka the casting threads. its mostly amateur women appearing in professional productions with proper lighting and camera work

>>29270353
do you have more of her?..

>>29270458
see>>29270366

>>29270464
i know lol. one more teaser? :)

>>29270477
see>>29270865

>>29260911
>but it's literally true?
mp4 compression is literally shit

>>29270865
ah fuck editing error its over

>saturday the sabbath
>no blacked threads are made (so far)
really makes you think doesn't it

>>29267162
>phoneposter opinion

>>29271300
It makes one think you're a basehead looking for his fix of race porn.

This is what I got out of a 30s clip at 1080p with lowered audio bitrate with VP9 Webm. Not the best

>point out how the jews aren't ruining the board on their sabbath
>hurr durr you're the jew

>>29271610
now drop it to 20 seconds and lanczos interpolation and watch the quality increase a lot

pro am thread is up
>>29271893
>>29271893
>>29271893

>>29271517
No. See >>29267186.

>>29267186
>ffmpeg is free and open sourced
so it seems like its your devices cucking you

I don't make a ton of OC, but when I do I usually make two versions. If it's a high quality source, I trim the original video to the good part with LosslessCut or Avidemux and save the un-reencoded clip for personal use. Then I'll make a 4 MB version for /gif/ that usually gets deleted right after posting

>>29260693 (OP)
Just use AVIDemux. It now supports webm, vp9 (libvpx) and vorbis, with options to specify video size before it renders. It generally achieves a pretty good result.

Issues start occurring due to sound file size more often than video, in my experience, at which point you want to use audacity to crush the bitrate, and even then... Also, videos that are more "busy" will require higher bitrates to not look like shit.

>>29267162
Webms work flawlessly on every windows & linux pc. There is no issue.

>>29272942
this

>>29260693 (OP)
ffmpeg
I'm not going to teach you how to use it because it really boils down to scenarios.
It can do many things. Take audio from video files, slice video cuts, take a folder of images and turn them into a video, then add audio into it. It does a great number of things and you're going to have to google everything you want it to do, but in your case you'd be googling "ffmpeg output webm, quality vs length" or something like that. or "compression types"
It's an absolute rabbithole and the original devs deserve a goddamn nobel peace price for their robustness.

>>29265194
>fucking retarded midwit take.
yes, you're a retarded gorilla imbecile.
The point isn't to compare between terrible low quality, and one okay quality video, but between two "high quality" videos.
Which one is better if you have two videos of comparable quality? Some people get very obsessed about this. There is no way to measure it objectively because ultimately it depends on the viewer. Some viewers will say "this video is good enough" while others will think "that's not detailed enough"

no if you're missing details then its bad

>>29273808
Bro, she's 4'3"

>>29273827
really? she looks way younger

>>29273830
Hilarious.

>>29260693 (OP)
just use the free webmgenerator and vp9 encoding.