Monkeybus's questions

I have videos that I have ripped off a streaming site, the vast majority play with mpv.

One or two, I get the error:

[ffmpeg/demuxer] mov,mp4,m4a,3gp,3g2,mj2: Invalid sample size -3
[ffmpeg/demuxer] mov,mp4,m4a,3gp,3g2,mj2: error reading header
[lavf] avformat_open_input() failed
[ffmpeg/demuxer] mov,mp4,m4a,3gp,3g2,mj2: Invalid sample size -3
[ffmpeg/demuxer] mov,mp4,m4a,3gp,3g2,mj2: error reading header
[lavf] avformat_open_input() failed
Failed to recognize file format

If I fire up VLC, I get:

avcodec decoder: Using Intel i965 driver for Intel(R) Sandybridge Mobile - 2.4.0 for hardware decoding

And all is good.

Is this an ffmpeg issue?. Does anyone have any ideas how I can fix this?

Video drivers/ffmpeg is well beyond me.

ffmpeg version 4.2.4-1ubuntu0.1 Copyright (c) 2000-2020 the FFmpeg developers built with gcc 9 (Ubuntu 9.3.0-10ubuntu2)

I want to stream video from nginx to my browser.

The videos are generlly in .mp4 format, but I can transcode either on the fly or in advance with avconv or ffmpeg/whatever.

Is there a module I can install in nginx that'll allow me to stream video to a browserwithout any other software on the server/my PC?

Has to be free, of course.

I have looked, and am getting a lot of confusing answers.

Thanks a lot, folks.

So,

Say I have my shopping cart at foo.com/a

I want to redirect shoppers to foo.com/b

At foo.com my .htaccess contains

RedirectMatch 302 ^/(index\.html)?$ foo.com/b

But people still land on foo.com/a (if they type it/have it bookmarked) It doesn't redirect. Only redirects if they land on foo.com

I'm sure it's a trivial problem. Can anyone help?

Talk to you all later.

With MPlayer how do I start playing a video at x position?

Hello folks, so if I want to start MPlayer at x position, what would I do?

I have been ploughing through the man page and I cannot find it.

Must be:

mplayer -<position I need> x name.of.video.mp4

Can someone point me in the right direction?

I am installing https://github.com/pH7Software/pH7-Social-Dating-CMS

On a virgin Ubuntu 18.04 server.

I am going by this guide

Nginx, php 7.3 (Maria DB).

It all went well, the installation script asked for various PHP modules, I installed them all via apt.

But, the final module, curl. I have it installed. It is definitely there. it is listed as a PHP module, but the script cannot see it.

Still keeps asking for the module and refuses to continue with the installation.

I installed it before using PHP and Apache, I suspect the issue may be Maria and/or Nginx.

Does anyone have any ideas?

Thanks a lot.

So on my site, my shopping cart is located at example.com/zc2.

I use this .htaccess file:

RewriteEngine On

Redirect /index.html https://example.com/zc2/

So that anyone that lands on example.com will be redirected to my shopping cart.

All good, but now if I try and install WordPress at example.com/wp then browsers get stuck in a redirect loop.

I am positive it is my badly crafted .htaccess file.

What can I do to fix this?

Suppose my domain is foo.com, I have index.html in my root directory.
Then if I install a shopping cart in /cart and it has index.php as its index page.

How would I change the default index to /cart/index.php using .htaccess?

I have a text file with various passwords, usernames and financial information on it. Suppose I want to encrypt it, then rsync copies to various devices. If I use GPG to encrypt the file, how can I guarantee there is no unencrypted copy of the file left behind on the HDD or in RAM?

Does that make sense?

I want to encrypt a file (no problem), then make sure there is no way to access the file at all.

Here is my question, what video driver/config files do I need to backup if I break my system by playing around with the settings?

So, I am still stuggling to get my Geforce working to my satisfaction (display freezes periodically, sometimes the system completely locks up, I use the REISUB quite a lot).

If I start VLC or Mplayer in auto-fullscreen mode it often locks up.

Bootup is always hit or miss, I get the login screen, but it will not accept input, just frozen. Hard reboot time, I don't like a hard reboot, feel like an amateur.

If the system freezes, it will not allow Ctrl+Alt+Fx, and not always REISUB.

So I'm going to try various drivers and configurations until I get it right.

I'm running Ubuntu 16.04 LTS.

Intel Core i7.

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 555M] (rev a1)

I have an SSD as well, but this version of Ubuntu is very laggy, buggy, just not as good as I'd like.

What do you all think? What should I backup?

Thanks a lot folks. When I crack this, I'll post a full report.

Did I format this post correctly?

With multiple viewports, you can right click a window and then move it to the viewport right/down, etc.

On Gnome, I could send a window directly to workspace 1/2/3/4.

Can I implement this in Unity? Right click the window and send the window to a named or numbered viewport?

First post, but I've been lurking here for a while.

I have been using Linux since Red Hat 7, I've recently upgraded to Ubuntu 16.04.

It is my first Linux where the GPU is actually properly supported. No black screen of death.

My question is:

If the GPU is so much more powerful than the Intel processor (Core I7 for me), why can it not handle all of the graphic duties with aplomb?

I am not a gamer, I just use the PC for Video, email, Gimp. You get the idea.

If I set the graphics to Nvidia, everything is laggy, especially VLC.

But regardless, the hit the PC takes regarding performance is really noticable. Gnome is slow, Cinnamon also.

My Raspberry Pi, model B video playback is smooth as silk (with Omxplayer).

Is it because VLC and Mplayer are not specifically compiled to use Nvidia and certain games are? It does seem a shame to be wasting all of this processing power. Or am I doing something wrong?

I'm now just using the X.org xserver and all is good. Even Intel runs the graphics faster/less laggy.

What is going on? I've hunted around for the answer, apologies if this question has already been asked before.

Thanks a lot

Here is the output of lspci -vv | awk '/ VGA /{do{print; getline}while($0!="")}'

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Lenovo 2nd Generation Core Processor Family Integrated Graphics Controller
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0
    Interrupt: pin A routed to IRQ 35
    Region 0: Memory at f1400000 (64-bit, non-prefetchable) [size=4M]
    Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
    Region 4: I/O ports at 3000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: <access denied>
    Kernel driver in use: i915
    Kernel modules: i915
01:00.0 VGA compatible controller: NVIDIA Corporation GF108M [GeForce GT 555M] (rev a1) (prog-if 00 [VGA controller])
    Subsystem: Lenovo GF108M [GeForce GT 555M]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
    Latency: 0, Cache Line Size: 64 bytes
    Interrupt: pin A routed to IRQ 34
    Region 0: Memory at f0000000 (32-bit, non-prefetchable) [size=16M]
    Region 1: Memory at c0000000 (64-bit, prefetchable) [size=256M]
    Region 3: Memory at d0000000 (64-bit, prefetchable) [size=32M]
    Region 5: I/O ports at 2000 [size=128]
    Expansion ROM at f1000000 [disabled] [size=512K]
    Capabilities: <access denied>
    Kernel driver in use: nouveau
    Kernel modules: nvidiafb, nouveau