Sunday, July 10, 2016

Re: [LINUX_Newbies] how to repair a file with ffmpeg SORRY 2nd question

 

On Sun, Jul 10, 2016 at 09:19:19AM +0200, 'highskywhy@yahoo.de' highskywhy@yahoo.de [LINUX_Newbies] wrote:
> I talked about the damaged file before repair.
>

Sorry, I don't know what you mean.
As I understand it, you have a file that works, save for the last two
minutes.
If you remove the last two minutes of the file with ffmpeg, the rest of it
doesn't work?

If it's possible to upload the original file I can take a look, but
otherwise, all I can say is that the command I gave should work. You have
to figure out the length of the file, which you can do with ffprobe, then
use ffmpeg -i file -t (duration minus 120 seconds) outfile.

--
Scott Robbins
PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
gpg --keyserver pgp.mit.edu --recv-keys EB3467D6

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Re: [LINUX_Newbies] how to repair a file with ffmpeg SORRY 2nd question

 

I talked about the damaged file before repair.

Sophie

On 30.06.2016 19:08, Scott scottro@nyc.rr.com [LINUX_Newbies] wrote:
> On Thu, Jun 30, 2016 at 06:55:56PM +0200, 'highskywhy@yahoo.de'
> highskywhy@yahoo.de [LINUX_Newbies] wrote:
> > question 2:
> > clever solution thank You
>
> > *
> > how does vlc manage the damaged file?
>
> You mean once you've changed it with ffmpeg?
>
> I don't know VLC at all, perhaps someone else can help. I recommend using
> mplayer or mpv.
>
> But, if you have a 10 minute file, with the last two minutes damaged,
> regardless of the type of file,
>
> ffmpeg -i myfile.wmv -t 480 out.wmv, that should chop off the last two
> minutes. If VLC still can't handle it, there may be something else wrong.
>
> --
> Scott Robbins
> PGP keyID EB3467D6
> ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
> gpg --keyserver pgp.mit.edu --recv-keys EB3467D6
>

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Re: [LINUX_Newbies] how to repair a file with ffmpeg

 

Thank You

but it did not work
I ll send You an report.

Sophie

On 30.06.2016 17:25, Scott scottro@nyc.rr.com [LINUX_Newbies] wrote:
> On Thu, Jun 30, 2016 at 05:10:58PM +0200, 'highskywhy@yahoo.de'
> highskywhy@yahoo.de [LINUX_Newbies] wrote:
> > So i cut the end
> >
> > the end is not important
> >
> > and the file is ok.
> >
> > This does work with mp4 and wmv?
>
> Yes, it works with any media file.

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Posted by: "highskywhy@yahoo.de" <highskywhy@yahoo.de>
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Sunday, July 3, 2016

Re: [LINUX_Newbies] ffmpeg x11grab flag?

 

On Sun, Jul 03, 2016 at 09:19:54AM -0400, Hal halinux@frontier.com [LINUX_Newbies] wrote:
>
> > However, if it's defintely giving that pixelation you're describing,
> > there's a few options. I don't know much about youtube uploading, so not
> > sure why youtube-dl wouldn't get the captions, whenever I've used it, say,
> > with anime, I've bee able to get my captions.
>
> I see that "captions" means many things; embedded or separate tracks, etc..
> So much to learn.. I, also, note that other "grab" programs don't print the
> captions with the quality good, otherwise.. I suspect almost all of them
> use ffmpeg as the backend..
>
>
>
> > Also, are you using the latest youtube-dl, that is, going to their site and
> > downloading it, or the one provided by your distribution? Sometimes, those
> > will be older versions and not work as well.
>
> Latest version I could find; didn't try older ones..

My suggestion would have only been to try the latest. :)

>
> I have another issue with the 4kvideodownloader.com tarball that I bought
> and should list separately..

If you paid for that one, they may offer some form of support.

I don't know how subs are usually put into youtube videos, as I don't
download them often. The few that I have, anime, had them embedded as part
of the video. (which you can do by say, making an mkv container, then,
with various ffmpeg parameters making it into an mp4 file.)

There may be some other screengrabber that does it, or a better youtube
downloader. Sorry I can't be more help.

--
Scott Robbins
PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
gpg --keyserver pgp.mit.edu --recv-keys EB3467D6

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Re: [LINUX_Newbies] ffmpeg x11grab flag?

 

On Fri, Jul 01, 2016 at 05:04:34PM -0400, Scott scottro@nyc.rr.com [LINUX_Newbies] wrote:
> On Fri, Jul 01, 2016 at 04:36:33PM -0400, Hal halinux@frontier.com [LINUX_Newbies] wrote:
> > Greetings: Trying ffmpeg's x11grab feature works well except for one issue;
> > at least to me:
> >
> > The grabbed copy of a YouTube video is good except the picture quality that
> > appears as a mozaic of little squares; if that's the right description..
> >
> > The reason for trying ffmpeg is that using youtube-dl d/l'd a good copy of
> > the video but would not copy the embedded captions.. :^(..
> >
>
> I haven't been able to duplicate your problem. I use something like
>
> ffmpg -s 1366x768 -f x11grab -i $DISPLAY -f alsa -i default output.mkv
>
> (I get the 1366x768 from xrandr)

Thanks Scott for your reply; my script is basically the same as yours:

ffmpeg -f x11grab -s 1280x1024 -r 29.97 -i :0.0 grab.mp4

Playing around with the parameters changed little as far as the pixelation..
I fitted a PCIe video card instead of the on board and it may have helped;
but little.. I think the video information grabbed is before the cards input
though..

> However, if it's defintely giving that pixelation you're describing,
> there's a few options. I don't know much about youtube uploading, so not
> sure why youtube-dl wouldn't get the captions, whenever I've used it, say,
> with anime, I've bee able to get my captions.

I see that "captions" means many things; embedded or separate tracks, etc..
So much to learn.. I, also, note that other "grab" programs don't print the
captions with the quality good, otherwise.. I suspect almost all of them
use ffmpeg as the backend..

> Also, are you using the latest youtube-dl, that is, going to their site and
> downloading it, or the one provided by your distribution? Sometimes, those
> will be older versions and not work as well.

Latest version I could find; didn't try older ones..

I have another issue with the 4kvideodownloader.com tarball that I bought
and should list separately..

Thanks again..

--

Hal..

GNU-Linux/UNIX - Slackware 14.1 JFS X86

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Posted by: Hal <halinux@frontier.com>
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To unsubscribe from this list, please email LINUX_Newbies-unsubscribe@yahoogroups.com & you will be removed.

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Friday, July 1, 2016

Re: [LINUX_Newbies] ffmpeg x11grab flag?

 

On Fri, Jul 01, 2016 at 04:36:33PM -0400, Hal halinux@frontier.com [LINUX_Newbies] wrote:
> Greetings: Trying ffmpeg's x11grab feature works well except for one issue;
> at least to me:
>
> The grabbed copy of a YouTube video is good except the picture quality that
> appears as a mozaic of little squares; if that's the right description..
>
> The reason for trying ffmpeg is that using youtube-dl d/l'd a good copy of
> the video but would not copy the embedded captions.. :^(..
>

I haven't been able to duplicate your problem. I use something like

ffmpg -s 1366x768 -f x11grab -i $DISPLAY -f alsa -i default output.mkv

(I get the 1366x768 from xrandr)

However, if it's defintely giving that pixelation you're describing,
there's a few options. I don't know much about youtube uploading, so not
sure why youtube-dl wouldn't get the captions, whenever I've used it, say,
with anime, I've bee able to get my captions.

There's an extension for firefox, downloadhelper, that I have found useful
in the past.

http://www.downloadhelper.net/

Also, are you using the latest youtube-dl, that is, going to their site and
downloading it, or the one provided by your distribution? Sometimes, those
will be older versions and not work as well.

Depending upon what the video is, it may be available some other place
besides youtube--for example, if it's an anime, you may be able to watch it
on crunchyroll.

--
Scott Robbins
PGP keyID EB3467D6
( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 )
gpg --keyserver pgp.mit.edu --recv-keys EB3467D6

__._,_.___
Posted by: Scott <scottro@nyc.rr.com>
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Have you tried the highest rated email app?
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To unsubscribe from this list, please email LINUX_Newbies-unsubscribe@yahoogroups.com & you will be removed.

.

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[LINUX_Newbies] ffmpeg x11grab flag?

 

Greetings: Trying ffmpeg's x11grab feature works well except for one issue;
at least to me:

The grabbed copy of a YouTube video is good except the picture quality that
appears as a mozaic of little squares; if that's the right description..

The reason for trying ffmpeg is that using youtube-dl d/l'd a good copy of
the video but would not copy the embedded captions.. :^(..

I've also been trying 4kvideodownloader; no joy so far with the captions..

Any suggestions?? TIA..

--

Hal..

GNU-Linux/UNIX - Slackware 14.1 JFS X86

__._,_.___
Posted by: Hal <halinux@frontier.com>
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Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
To unsubscribe from this list, please email LINUX_Newbies-unsubscribe@yahoogroups.com & you will be removed.

.

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