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User Comment
Submitted by daddlerTL on 21 November 2022
@zzarko Thanks for the hint with the tool retropixels. It gives nice results, it is fast and batch processing can be done using this line in a .bat file: for %%f in (./*.bmp) do retropixels -c yuv %%f
(instead of yuv you can also use rgb or xyz, which one is better depends on the images you want to convert and the personal taste)
If the author of the tool retropixels reads this too: it would be nice to have a standalone version that can be copied from one computer to another without having to download it using node.js to allow offline installation and it would be nice if it would be possible to set brightness, contrast, saturation etc. (which can be done in the online tool) in the command line version too - this would also allow to use to online tool to test for the best settings and than transfer those settings to the command line in the batch file.
Creating a full automated script may be a lot of work. I recommend to only automate the audio and frame extraction (let the script do it like described in the "How to make a Koalavideo.pdf" of the downloaded archive), audio conversion and image conversion using retro pixels. Replacing the REUmaker is not recommended as it does a lot of work like create the meta data for the player, compress some data, remove unnecessary data of black borders for the video formats 16:9 and 4:3, align the data to avoid the REU wrap around bug, prompt the user to set some playback options and allow to add an info screen. Most of this would have to be done by the script too to make the video file playable by the player. It is easier to just let the script call the REUmaker as last command and let the REUmaker do all that work. |
User Comment
Submitted by Youth on 11 November 2022
| @zzarko I’m glad to see that retropixels is actually being used :) I’m curious at the results now. I also have a script to produce ‘regular’ video like this one: https://www.micheldebree.nl/posts/iceball/ and I realized that maybe I should spend some time optimizing the conversion for cases like this and maybe support batch processing to reduce the overhead of starting the tool for every frame. Will make an issue for this and see what I can do. |
User Comment
Submitted by zzarko on 10 November 2022
Very nice, very nice quality of the video and of the audio!
Regarding conversion, I have made similar thing in 2020 as a bash script that uses ffmpeg and sox for audio and video extraction, and retropixels to convert to Koala format. Player code was taken from VBGuyNY C64 Kernel (not written by me).
https://bitbucket.org/zzarko/c64movie/
My script handles everything by itself, you just supply it with video file name and it outputs REU file, there are no manual steps involved. But, I do not have many settings for conversion process.
I must say that your audio quality is superb, as the player I have used produced a lot of noise:
https://www.youtube.com/watch?v=LN3y1koqi3A
Anyhow, what I wanted to say, you can automate all the steps that are manually done (frame extraction, audio extraction and conversion). Converting to Koala is in my script the part that takes most of the time, but I launch several retropixel instances at once (default is number of cores on the PC) and that makes conversion step much faster. If I figure out how the data is organized inside REU for your player, I can try to modify my script for it (if that is OK). |
User Comment
Submitted by daddlerTL on 10 November 2022
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