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FFmpeg 6.0

ffmpeg.org

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Re: FFmpeg 6.0

#151

Post by jorvi »

sirsinsalot wrote: post #60
lxe wrote: post #6

Fun fact of the day: ffmpeg is written by Fabrice Bellard, who among other impressive things, wrote the JS PC emulator capable of running windows 2000 in a browser over 10 years ago that got me fascinated with emulators in general. https://bellard.org/jslinux/tech.html

Fabrice is superhuman for sure, but in 20 years the urban legend will go like ... Fabrice Bellard once read all of TAOCP in 20 minutes before being absorbed into his own AI and is now ascended in the ethereal ethernet silently fixing bugs in your code. Blessed be the bits.

“Even in death, I serve the Omnissiah.”

Re: FFmpeg 6.0

#153

Post by Terretta »

sirsinsalot wrote: post #60
lxe wrote: post #6

Fun fact of the day: ffmpeg is written by Fabrice Bellard, who among other impressive things, wrote the JS PC emulator capable of running windows 2000 in a browser over 10 years ago that got me fascinated with emulators in general. https://bellard.org/jslinux/tech.html

Fabrice is superhuman for sure, but in 20 years the urban legend will go like ... Fabrice Bellard once read all of TAOCP in 20 minutes before being absorbed into his own AI and is now ascended in the ethereal ethernet silently fixing bugs in your code. Blessed be the bits.

... before being absorbed into his own AI and is now ascended in the Ethernet plane silently generating endless frames of international scandi-noir thriller serials for Netflix.

Re: FFmpeg 6.0

#154

Post by mnw21cam »

seba_dos1 wrote: post #79
eimrine wrote: post #70

Is it possible to mount video for Youtube using only ffmpeg for cutting footage, adding music/letters/filters and never using GUI?

Yes.

Yes, that's how I do it. I have a script that takes a list of cuts, source videos/images, and effects, and runs ffmpeg to produce the final result. That's also how many GUI video editing tools work - they just use the GUI to build the cut list.

Re: FFmpeg 6.0

#155

Post by esperent »

bsenftner wrote: post #133
cm2187 wrote: post #81

Earlier quoted context omitted.

I am still using 4.2. Does it make any difference if all I care about is h264 and hevc?

At a prior job we pinned to 4.2.3 because after that version an internal change massively impacted high frame rates. With a 1080p mp4 file on disk, and that disc being an ssd, version 4.2.3 delivers 700-800 frames per second, while all the versions after that 4.2.3 release - no other app or library changes - that same file may reach 300 fps. I spent some time trying to find the cause of that 50% cut in efficiency, bu…

> I spent some time trying to find the cause of that 50% cut in efficiency

Presumably they have an issue tracker. Did you report this?

Re: FFmpeg 6.0

#157

Post by rollcat »

arjvik wrote: post #16

I absolutely love ffmpeg, but for the life of me I cannot understand how its pipeline system works. Each time I need to use it, I attempt to construct the command myself, but end up giving up and consulting StackOverflow. Amazingly, someone has usually done the exact thing I need to do and posted their command line to StackOverflow, so I'm never out of luck! How do I actually start understanding how ffmpeg works? I w…

I know this doesn't answer your question, but have a look at GStreamer pipelines. They take the basic idea of shell pipelines, but add typing, format negotiation, M:N connections, etc all while giving you optional control over low-level details (which demuxer?), but also high-level abstractions (just show me a window with a preview). Once prototyped on the CLI (gst-launch-1.0[1]), they're also very easy to start using within an application through the framework (gst_parse_launch[2]), where you can e.g. iteratively add things like a volume slider. You can also access most of FFmpeg's codecs through libav.

[1]: https://gstreamer.freedesktop.org/documentation/tutorials/ba...

[2]: https://gstreamer.freedesktop.org/documentation/gstreamer/gs...

Re: FFmpeg 6.0

#158

Post by bsenftner »

esperent wrote: post #155
bsenftner wrote: post #133

Earlier quoted context omitted.

At a prior job we pinned to 4.2.3 because after that version an internal change massively impacted high frame rates. With a 1080p mp4 file on disk, and that disc being an ssd, version 4.2.3 delivers 700-800 frames per second, while all the versions after that 4.2.3 release - no other app or library changes - that same file may reach 300 fps. I spent some time trying to find the cause of that 50% cut in efficiency, bu…

> I spent some time trying to find the cause of that 50% cut in efficiency Presumably they have an issue tracker. Did you report this?

When I looked, it had been reported already.

Re: FFmpeg 6.0

#159

Post by glonq »

sirsinsalot wrote: post #60
lxe wrote: post #6

Fun fact of the day: ffmpeg is written by Fabrice Bellard, who among other impressive things, wrote the JS PC emulator capable of running windows 2000 in a browser over 10 years ago that got me fascinated with emulators in general. https://bellard.org/jslinux/tech.html

Fabrice is superhuman for sure, but in 20 years the urban legend will go like ... Fabrice Bellard once read all of TAOCP in 20 minutes before being absorbed into his own AI and is now ascended in the ethereal ethernet silently fixing bugs in your code. Blessed be the bits.

I'd love to borrow FB's brain for one week so that I could get an entire year's worth of work done.

Re: FFmpeg 6.0

#160

Post by Wowfunhappy »

brookst wrote: post #145
Wowfunhappy wrote: post #75

Earlier quoted context omitted.

Shouldn't RHLF help with this? So it learns that when people specify a number, they mean something very specific.

It doesn’t have any logic; it just tries to complete strings in the most plausible way. It’s training material probably did not have a lot of “write five at signs: @@@@@“. RLHF might help steer it in the right direction, but probably wouldn’t product the concept of counting or loops.

So, this is where I guess I just don't understand. I've had ChatGPT produce code for me that there is absolutely no way it already had in its training set. I realize it can't actually "think", but then I also don't know how to describe what I'm seeing.
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