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Search: Posts Made By: jotd
Forum: support.WinUAE 14 May 2020, 09:46
Replies: 101
Views: 9,734
Posted By jotd
thanks for clarifying. I guessed (wrong) the...

thanks for clarifying. I guessed (wrong) the details, but it amounts to the same thing. Multipass is required to reduce size, with the same quality.
Forum: support.WinUAE 13 May 2020, 12:19
Replies: 101
Views: 9,734
Posted By jotd
that's not what variable bitrate does. The videos...

that's not what variable bitrate does. The videos where quality deteriorates have too low bitrate (constant or variable). If you use variable bitrate with the same overall bitrate, what will happen...
Forum: support.WinUAE 13 May 2020, 10:20
Replies: 101
Views: 9,734
Posted By jotd
yeah, with one pass, bitrate is constant. But...

yeah, with one pass, bitrate is constant. But hard drive space is cheap :)
Forum: support.WinUAE 13 May 2020, 09:14
Replies: 101
Views: 9,734
Posted By jotd
Of course, you have to favor recording speed and...

Of course, you have to favor recording speed and accept that the recorded file is big (no or very fast and inefficient compression), then use a second pass to apply high quality, multipass...
Forum: support.WinUAE 12 May 2020, 22:39
Replies: 101
Views: 9,734
Posted By jotd
Ffmpeg forever!! And you're still not using 2...

Ffmpeg forever!! And you're still not using 2 passes. Using 2 passes reduces the size even more for the same quality (or better quality for same size), but it's more complex so I scripted it in the...
Forum: support.WinUAE 12 May 2020, 19:32
Replies: 101
Views: 9,734
Posted By jotd
My python script wraps ffmpeg and outputs .mp4....

My python script wraps ffmpeg and outputs .mp4. It also chains 2 passes so size is even better (adapts to various parts of the video)

67305
Forum: support.WinUAE 12 May 2020, 12:54
Replies: 101
Views: 9,734
Posted By jotd
You required not to change the video stream. But...

You required not to change the video stream. But changing the video stream to MP4 is not a problem either. I'll post the details later when I can check my source code.
Forum: support.WinUAE 12 May 2020, 00:18
Replies: 101
Views: 9,734
Posted By jotd
@Foebane I could change audio track and keep...

@Foebane I could change audio track and keep video intact and output to .avi

ffmpeg rules, specially since you can batch the conversions. Other tools with a GUI require you to click on buttons to...
Forum: support.WinUAE 11 May 2020, 22:21
Replies: 101
Views: 9,734
Posted By jotd
Well, if the inner format is supported by mp4, a...

Well, if the inner format is supported by mp4, a copy of the video stream will work (and will be very fast). If you link to your video I can have a try at it to repack only the audio.
Forum: support.WinUAE 11 May 2020, 21:55
Replies: 101
Views: 9,734
Posted By jotd
the extension DOES matter. The meta format is...

the extension DOES matter. The meta format is different. Also, depending on the extension, such or such program could be associated with the file. And some programs may only rely on the extension to...
Forum: support.WinUAE 11 May 2020, 18:06
Replies: 101
Views: 9,734
Posted By jotd
yup. I will provide the command line for you as...

yup. I will provide the command line for you as soon as I have access to my examples. It's really simple, specially when you spent hours tuning a proper command line :)
I'm not sure if it can spit...
Forum: support.WinUAE 11 May 2020, 17:21
Replies: 101
Views: 9,734
Posted By jotd
ffmpeg allows to copy video stream and reencode...

ffmpeg allows to copy video stream and reencode audio. it is post processing though
Forum: support.WinUAE 10 May 2020, 12:40
Replies: 101
Views: 9,734
Posted By jotd
TL;DR use the codec that can record the video...

TL;DR use the codec that can record the video without glitches even if it creates a big file, then reencode to MP4 to compress the file.
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