161
votes
Accepted
How do I speed up a video by 60X in ffmpeg?
Simply multiply by the reciprocal of the speed factor.
ffmpeg -i input.mkv -filter:v "setpts=PTS/60" output.mkv
This does not affect the audio speed. Use -an to not include audio in the ...
- 37.4k
96
votes
Accepted
Is an HDD overwritten with zeroes faster?
Hard drives do not store the literal zeroes and ones that I suspect that you think they do. Instead, they store the data in an encoded format that guarantees that there won't be too many zero bits or ...
- 3,063
87
votes
Why is my HDD so slow on the "4K" speed tests?
What you are running into is typical of mechanical HDDs, and one of the major benefits of SSDs: HDDs have terrible random access performance.
In CrystalDiskMark, "Seq" means sequential access while "...
- 62.1k
55
votes
Is an HDD overwritten with zeroes faster?
No, it will not be faster. Writing takes the same amount of time regardless of the data being overwritten.
- 23.9k
48
votes
Accepted
Can Internet speed decrease the further away a certain (server in a) country is from you?
It taking longer to receive data from further away is an actual phenomenon, but not to the extent that you are seeing.
Assuming a direct line of sight to a target 600 kilometers away, light would ...
- 94.5k
47
votes
How do I speed up a video by 60X in ffmpeg?
If you also want to speed up the audio, you need to do this:
ffmpeg -i input.mkv -filter_complex "[0:v]setpts=0.5*PTS[v];[0:a]atempo=2[a]" -map "[v]" -map "[a]" output....
- 590
38
votes
Accepted
Opening VLC media player 3 takes a long time to open
There can be many causes for a slow launch in VLC 3, but here are two solutions I've confirmed help:
Solution A
VLCwin7User on the VideoLan forums came up a solution that I will paraphrase and add to:
...
- 1,614
26
votes
Accepted
Does USB version speed matter for input devices?
If you don't notice a difference, it might not really matter. You can test your input delay by plugging in the mouse directly and measuring the polling rate. Then measure again through the hub.
Look ...
- 1,130
24
votes
Accepted
What's the difference between GPU Memory bandwidth and speed?
There are two separate things being specified here. I have copied the Nvidia spec from the page you linked to show it better.
One is the memory chip data line interface speed of 8gbps which is part ...
- 94.5k
23
votes
How to change playback speed steps in VLC Player?
See this answer.
In the View menu of VLC player, Click the Status Bar , so that the current speed will be displayed on the status bar always. You can enable this for full screen also.
If ...
- 423
21
votes
Can Internet speed decrease the further away a certain (server in a) country is from you?
Obligatory internet history: The case of the 500-mile email
The amount of data "in flight" at any one time is limited by the TCP window established between the two systems. In some cases window ...
- 6,166
18
votes
Does an extra old internal hard disk drive affect my new PC system’s performance?
Overall, no, it will not affect your PC's general performance. Only applications that make use of data stored on that HDD will experience a performance penalty due to the slower data speeds of that ...
- 3,023
16
votes
How do I find out the speed of an Ethernet cable?
Most of the markings on ethernet cables refer to safety certifications, standards bodies ratings, and similar things that won't much help much. The few things you might want to look for include:
...
- 261
16
votes
Does an extra old internal hard disk drive affect my new PC system’s performance?
Possibly.
From a Hardware Standpoint: It shouldn't, but this may depend on the SATA chip on the motherboard. Having to read large quantities of information through a slow channel might adversely ...
- 8,510
15
votes
Accepted
How to speed up robocopy
Can I add any options to increase the performance of the robocopy command?
The following options will change the performance of robocopy:
/J : Copy using unbuffered I/O (recommended for large ...
- 159k
15
votes
Does an extra old internal hard disk drive affect my new PC system’s performance?
I've observed that some Windows 10 GUI operations (for example "open file" dialogs or opening Windows Explorer windows) will hang when you have an inactive external USB drive connected. I ...
- 311
14
votes
What is faster: Intel's Optane SSD or RAM?
1 s(second) = 1000 ms(millisecond)
1 ms(millisecond) = 1000 μs(microsecond)
1 μs(microsecond) = 1000 ns(nanosecond)
DRAM: 200 ns
3D Xpoint: 7 μs (7000 ns)
enterprise NVMe PCIe SSD: 30 μs (30,000 ...
- 241
12
votes
Cat file to terminal at particular speed of lines per second
just use awk with sleep:
awk '{print $0; system("sleep .1");}' log.txt
- 121
12
votes
How do I speed up a video by 60X in ffmpeg?
Speed up by 60x, with 60x the original fps
ffmpeg -i input.mkv -filter:v "setpts=PTS/60" -an output.mkv
setpts=PTS/60 divides each frame's presentation time-stamp by 60.
-an removes the ...
- 3,618
11
votes
Is an HDD overwritten with zeroes faster?
This depends on:
Whether it's a mechanical HDD or an SSD.
For an SSD, as other answers note, you should not overwrite with zeroes (which would impose unnecessary wear on the Flash cells), but ...
- 368
9
votes
How do I speed up a video by 60X in ffmpeg?
For a stop-motion project where I wanted to reduce the delay between frames (instead of dropping frames), I wanted to speed up the audio and video many times beyond 2x too. For 60x speed, do the ...
- 224
7
votes
Accepted
How to debug slow samba share by Nautilus?
Accoding to a forum the problem is with gvfs and cifs works much better. I am not familiar with these terms, but I can confirm that. By mounting the drive manually:
mount -t cifs -o username=root,...
- 1,155
7
votes
Can Internet speed decrease the further away a certain (server in a) country is from you?
Well, "the great Russian firewall" can be in place too, degrading the speed. Then it would depend on how much information it collects (just established connection information, full connection content ...
- 1,532
7
votes
Effects of extending RJ11 cable length to modem
The best thing you can do is home run a CAT-5E solid conductor cable back to the DMARC. (Outside box where the PSTN copper line comes in.) You can put one DSL filter here in parallel with the CAT-5E ...
- 6,030
7
votes
Accepted
SSD write speed drops at about 82-84% of the way into a file transfer
I suspected that the slowdown might be due to SLC cache saturation, and it seems very likely to be the case after a bit of research.
Simply put, just because the drive advertises 500MB/s, does not ...
- 939
6
votes
Cat file to terminal at particular speed of lines per second
Instead of using an interpreter you can use a tool specifically made.
It's likely installed on your distro or you can install it (apt-get install pv, etc..)
To display the file at 5 lines per second:
...
- 366
6
votes
Does USB version speed matter for input devices?
I expect the cost to be minimal. USB 1.1 was fairly widely popular, and wasn't considered slow for such devices. (It was just too slow for certain other types of devices.)
In many cases, all you ...
- 16.1k
5
votes
Is there a video player that can go at various speeds?
I found a way to do it in native windows media player.
I'm not sure why it was so deeply hidden, it is almost as if they didn't want people to do it.
CTRL+SHIFT+G -> fast forward
CTRL+SHIFT+N -> ...
- 151
Only top scored, non community-wiki answers of a minimum length are eligible