On Tue, Jul 14, 2015 at 05:42:59 +, Dani A wrote:
if I add -pix_fmt yuv420p to my long ffmpeg command , will it work on
all mov formats conversion to mp4s, or only on 4:2:2 pixel formats?
ffmpeg will only insert the conversion if required, it the original
source has the correct pixel
Hello All,
I’ve been searching for an answer for quite some time and hopefully you will
have the answer for me. Consider that I have used ffmpeg in the past, but I am
certainly still a newbie.
I have a routine that captures a stream of images, pipes them to ffmpeg and
outputs a video file.
Hi Carl,
The host I’m using is called nw.js (node-webkit). I use it to render a video
from a browser based renderer. I didn’t write the host, but from reading the
source code it’s a node js wrapper that communicates with a C++ executable.
From what I can see the interprocess messaging system
Yotam Laufer y at utab.com writes:
The example I included for rasterizing a base64 datauri
is taken from the documentation and uses GIF, running
it on the command line will generate an image, so I’m
guessing some support is there. I use PNGs if it
matters.
I am not sure I understand
Yotam Laufer y at utab.com writes:
You could implement an option to the pipe
protocol to accept (and decode) base64.
Note that a base64 decoder exists in libavutil.
If you have an example on how to approach this
it will be most helpful.
I suspect the data protocol that you showed
Yotam Laufer y at utab.com writes:
The host that captures the images returns them as a
base64 string,
Why?
I mean: I suspect this is not the internal representation
of the image inside the host and it is likely that FFmpeg
can read the internal representation.
There is no gif parser
The example I included for rasterizing a base64 datauri
is taken from the documentation and uses GIF, running
it on the command line will generate an image, so I’m
guessing some support is there. I use PNGs if it
matters.
I am not sure I understand this sentence, but in any
case:
Nicolas George george at nsup.org writes:
Le quintidi 25 messidor, an CCXXIII, Carl Eugen Hoyos a écrit :
I can confirm that there may be an issue
but it is not overlay-related:
$ ffmpeg -i input -vf
split[x][z];[x]format=gray[x1];[x1]nullsink
-strict -2 -vcodec jpeg2000 -ss 1 out1.avi
Asking for help with h264 headers generation. Both copying headers
from similar videos and porting headers generation code from reference
driver don't work for me (ref driver is weird and very complicated, so
porting involved importing of lots of code, but still in my case the
generated header
On 2015-07-14 23:00, Wesley Wen wrote:
-g 29.9002997
This is an integer parameter.
[libx264 @ 0x7ff1e8816e00] frame I:71Avg QP: 2.19 size: 46261
[libx264 @ 0x7ff1e8816e00] frame P:2040 Avg QP: 2.51 size: 11560
[libx264 @ 0x7f948a822800] frame I:71Avg QP: 1.80 size: 48058
Hi,
We transcoded source file to multiple resolution/bitrate in order to create
adaptive stream. One of the profile is 7M bps and we tried to encode it as
near CBR.
We prepared one FFmpeg command and it worked quite well for most content.
However, for some content, the actual bitrate of encoded
On Wed, Jul 15, 2015 at 6:49 AM, James Darnley james.darn...@gmail.com
wrote:
On 2015-07-14 23:00, Wesley Wen wrote:
-g 29.9002997
This is an integer parameter.
[libx264 @ 0x7ff1e8816e00] frame I:71Avg QP: 2.19 size: 46261
[libx264 @ 0x7ff1e8816e00] frame P:2040 Avg QP: 2.51
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