[FFmpeg-user] hello ,when i install it ,it's wrong.

[????]

Hello ,I'm want install ffmpeg at cpanel/WHM, I am use the WHMXtra to install 
it .


but ,it's display as :  ERROR: libgsm not found.


I am try it at Centos ,use the command as :rpm -qa | grep gsm  ,it's display as 
:
gsm-1.0.13-11.el7.x86_64
gsm-tools-1.0.13-11.el7.x86_64


so,How can i do?
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[FFmpeg-user] how to do transport stream Re-multiplexing

[shraddha]

I am new in video streaming.so i don't have knowledge how to to do transport
stream re-multiplexing..for initialing y TS REMUX project...take ffmpeg tool
there have multiple example one of those are remuxing so i tried to execute
this file but i stuck in there i also tried multiple ffmpeg command for
extracting the channel from the TS file but data are not move to new ts
file.please help me in this project  



--
Sent from: http://www.ffmpeg-archive.org/
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[FFmpeg-user] Waveform to video

[Olivier Daubry]

Hello everyone,

Kind of new here but thought that I could possibly find people that could
help me over there. Anyway thanks for reading this.
I would be looking for a software that could convert an audio file to a
video clip of the waveform moving (such as in any playing DAW) with a fixed
playhead.
Zoom would be like 5 seconds of audio but this is secondary.

Does this already exist ? Would ffmpeg help me achieve this ?

Thanks everyone, hoping this won't need crazy development ^^

Cheers,
Olivier
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Re: [FFmpeg-user] Building tips for dual x264 (8-bit/10-bit) and building ffmpeg against these (dual ffmpeg bins)

[Douglas Marsh]

Found a way to do it entirely package maintainer way:


FWIW: a short hand for ffmpeg would be to make a script in your ~/bin 
directory:


~/bin$ cat ffmpeg10
#!/bin/bash

LD_PRELOAD=/usr/lib/x86_64-linux-gnu/x264-10bit/libx264.so.148 ffmpeg 
"$@"



--Doug (dx9s)


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Re: [FFmpeg-user] Building tips for dual x264 (8-bit/10-bit) and building ffmpeg against these (dual ffmpeg bins)

[Douglas Marsh]

On 2017-10-03 14:09, Carl Eugen Hoyos wrote:


Either use pkg-config or pass (--extra-cflags and) --extra-ldflags
to configure so it can find the intended installation.
(I don't know if there is an extra header, so ldflags may be
sufficient)



Found a way to do it entirely package maintainer way:

$ export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/x264-10bit/libx264.so.148
$ ffmpeg -h encoder=libx264

Encoder libx264 [libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10]:
General capabilities: delay threads
Threading capabilities: auto
Supported pixel formats: yuv420p10le yuv422p10le yuv444p10le nv20le
libx264 AVOptions:
[...]

Where normally it reads:

Encoder libx264 [libx264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10]:
General capabilities: delay threads
Threading capabilities: auto
Supported pixel formats: yuv420p yuvj420p yuv422p yuvj422p yuv444p 
yuvj444p nv12 nv16 nv21


This is with the distro-built x264 (which has both 8/10-bit versions, 10 
has to be explicitly loaded). So a shell script wrapper around ffmpeg or 
other programs that use the x264 library SHOULD be good enough for most 
programs.


Gonna try on a few other programs and see what works or breaks.

--Doug (dx9s)
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Re: [FFmpeg-user] Bd

[Carl Eugen Hoyos]

2017-10-04 1:23 GMT+02:00 Moritz Barsnick :
> On Wed, Oct 04, 2017 at 00:51:49 +0200, Carl Eugen Hoyos wrote:
>> 2017-10-04 0:35 GMT+02:00 Jacques Perconte :
>
>> > (1080p prores) on a Blu-ray. So I have to encode them :)
>>
>> So why do you have to encode them?
>
> Probably because ProRes on Blu Ray is not supported by common players.
>
>> Is the intended player unable to play h264 1080p?
>
> You missed the "1080p prores". ;-)

I did.

Iirc, there are examples on how to use x264 to create
a blu-ray conforming stream.

Not sure if this is also possible with ffmpeg (the command
line tool), it should but our mpeg-ts muxer sometimes
unfortunately creates non-conforming streams.

Carl Eugen
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Re: [FFmpeg-user] Bd

[Moritz Barsnick]

On Wed, Oct 04, 2017 at 00:51:49 +0200, Carl Eugen Hoyos wrote:
> 2017-10-04 0:35 GMT+02:00 Jacques Perconte :

> > (1080p prores) on a Blu-ray. So I have to encode them :)
> 
> So why do you have to encode them?

Probably because ProRes on Blu Ray is not supported by common players.

> Is the intended player unable to play h264 1080p?

You missed the "1080p prores". ;-)

Moritz
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Re: [FFmpeg-user] Bd

[Carl Eugen Hoyos]

2017-10-04 0:35 GMT+02:00 Jacques Perconte :

> My question was not precise. I have to put my films
> (1080p prores) on a Blu-ray. So I have to encode them :)

So why do you have to encode them?
Is the intended player unable to play h264 1080p?

Please do not top-post here, Carl Eugen
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Re: [FFmpeg-user] Bd

[Jacques Perconte]

Dear Eugen,

My question was not precise. I have to put my films (1080p prores) on a 
Blu-ray. So I have to encode them :)

Le 3 oct. 2017 à 01:06 +0200, Carl Eugen Hoyos , a écrit :
> 2017-10-03 0:40 GMT+02:00 Jacques Perconte :
> > Dear community members, I am searching for the best
> > Blu-ray encoding formula you tested.
>
> Best quality can easily be achieved by not re-encoding the original.
>
> > I focus on the quality. The images I have are very coloured,
> > sharp and shaky
>
> > is mp2 the best choice regarding the Max bitrate of 36Mbits ?
>
> mp2 is never the best choice (if quality counts).
>
> Carl Eugen
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Re: [FFmpeg-user] Building tips for dual x264 (8-bit/10-bit) and building ffmpeg against these (dual ffmpeg bins)

[Douglas Marsh]

On 2017-10-03 11:08, Douglas Marsh wrote:
-enable-shared


Will have to review this more.

Want to keep the vendor (Ubuntu) 8-bit x264 intact and install a
custom version of ffmpeg against it for 10-bit support as well, will
make ffmpeg10 or something like that as well.


Downloaded the deb source and noticed, they already build a 10-bit 
version of everything x264 related:


*** Contents:
./usr/lib/x86_64-linux-gnu/x264-10bit/libx264.so.148
./usr/lib/x86_64-linux-gnu/libx264.so.148
[...]

so I guess the real question is how to compile ffmpeg with alternate 
library for libx264.so.148 in the said directory...


--Doug (dx9s)
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[FFmpeg-user] Building tips for dual x264 (8-bit/10-bit) and building ffmpeg against these (dual ffmpeg bins)

[Douglas Marsh]

I am posting this (initially) to ffmpeg-user as the developers list is 
busy with ffmpeg and not sure if this question should be posted there.


I went through the process of building x264 with 10-bit into 
/usr/local/x264 and tried to (quickly/briefly) build with suffixes (like 
in FFMPEG), but will have to hack it elsewhere:


~git/x264$ ./configure --prefix=/usr/local/x264-10 
--extra-version=dx9s-x264-10 --build-suffix=-dx9s-x264-10 --bit-depth=10 
--enable-static --enable-shared


Will have to review this more.

Want to keep the vendor (Ubuntu) 8-bit x264 intact and install a custom 
version of ffmpeg against it for 10-bit support as well, will make 
ffmpeg10 or something like that as well.


Does anybody have steps on ways (plural) to do this and keep a dual 
8-bit/10-bit x264 with dual ffmpeg versions against those libraries?


--Doug (dx9s)

P.S.> wouldn't it be easier to simply add an interface/option inside 
x264 to support both in one library somehow?!

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[FFmpeg-user] Start offset changes in ts file

[m.kamalasubha m.kamalasubha]

Hello guys,
I converted a video file from MP4 format to TS format using the
following ffmpeg command.
   * ffmpeg -i  -c copy -bsf h264_mp4toannexb *
=> simply copies the A/V data from .mp4 to .ts

Simple copy operation from .mp4 -> .ts introduces *"start: 1.441667" in
* whereas  contains "start: 0.00".

 I find this extra 1.4 seconds getting added to start metadata in all
.ts files generated using ffmpeg command. My questions are
1) Why is it added ?
2) How to retain  "start: 0.00" in  ?

Thanks in advance.
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[FFmpeg-user] Start offset changes with ts file

[m.kamalasubha m.kamalasubha]

Hello guys,
I converted a video file from MP4 format to TS format using the
following ffmpeg command.
   * ffmpeg -i  -c copy -bsf h264_mp4toannexb *
=> simply copies the A/V data from .mp4 to .ts

Simple copy operation from .mp4 -> .ts introduces *"start: 1.441667" in
* whereas  contains "start: 0.00".

 I find this extra 1.4 seconds getting added to start metadata in all
.ts files generated using ffmpeg command. My questions are
1) Why is it added ?
2) How to retain  "start: 0.00" in  ?

Thanks in advance.
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