I don't think that 'keep source keyframes' might impose any a/v sync issues
that differ from any other encoding flows.
AFIAK, 'force_key_frames' acts on the output/encoding, it does not aware of
the decoding processing. For that matter - scene cuts are evaluated from
post-decoding/raw frames.
On
On 5/2/15 10:06 AM, Henk D. Schoneveld wrote:
Another potential issue could be the delay between the video and audio stream,
which would force you to also encode the source stream.
I had not thought about the audio at all... but audio is normally not a
problem even if re-encoded to get it
It does not matter the type of the incoming protocol.
And slight un-alignment tolerated by the CDN providers and Apple HLS
validation tools.
Therefore the source live stream can be used in an adaptive-bitrate sets,
IF the other streams match their key frames.
By the way Wowza has this option (keep
My simple idea was that instead of deducing from a formula like
-force_key_frames 'expr:gte(t,n_forced*5)'
force_key_frames somehow took this kind of info directly from the input
stream and passed onto all output streams
This could be called something like
-force_key_frames 'from_source'
Do
I was just trying to imagine optimisations when encoding multiple quality
outputs... For example doing sceene detection only once.
In reality, I am trying to get the input and outputs keyframes aligned so
that I can use the input with -c:v copy as one of the variants in the
resulting multiple
Hi,
I'm trying to convert a long F4V recorded on FMS
with multiple append from a livestream. some
segments contains different resolutions than the one that started.
I started from 462x260, after 1920x1200 etc...
from flash player the stream works correctly, shows every segements.
from a third
On 02 May 2015, at 06:27, Anatol anatol2...@gmail.com wrote:
The idea is to gain the option to use the H264 source stream along with
live transcoded streams in an adaptive bitrate delivery modes (HLS, HDS,
etc), that require aligned keyframes on ALL participating streams.
Could it be ALL,
Am 01.05.15 um 11:21 schrieb tim nicholson:
On 30/04/15 22:03, Marton Balint wrote:
On Wed, 29 Apr 2015, Christoph Gerstbauer wrote:
I found out that a IMX50 mxf file encoded with FFmbc and the IMX50 mxf
file encoded with actual ffmpeg builds are different in these mxf
metadata flags (by
My case is live streaming.
I have tried it and definitely keyframes are not aligned between input
and output streams.
For all encoded output streams it is very simple to obtain alignement
with setting the fixed GOP size. But the PTS and keyframes of input are
never aligned with that.
On 02 May 2015, at 11:38, Anatol anatol2...@gmail.com wrote:
I don't think that 'keep source keyframes' might impose any a/v sync issues
that differ from any other encoding flows.
AFIAK, 'force_key_frames' acts on the output/encoding, it does not aware of
the decoding processing. For that
On 02 May 2015, at 18:00, Haris Zukanovic haris.zukanovi...@gmail.com wrote:
My case is live streaming.
I have tried it and definitely keyframes are not aligned between input and
output streams.
For all encoded output streams it is very simple to obtain alignement with
setting the fixed
Madovsky infos at madovsky.org writes:
I tried to find a way to resize with ffmpeg but no success.
Command line and complete, uncut console output missing.
is it possible to let ffmpeg resize at a certain part of
the movie?
FFmpeg does not support different output size in one video
On Saturday, May 02, 2015 06:00:32 PM Haris Zukanovic wrote:
My case is live streaming.
I have tried it and definitely keyframes are not aligned between input
and output streams.
For all encoded output streams it is very simple to obtain alignement
with setting the fixed GOP size. But the PTS
Henk,
Its a real problem, if the streams are un-aligned, the playback gets into
jump-forward-backward mood.
It's not a problem to get source file key frames and to have them encoded
into the rest of the files.
The problem is with a live streaming, because it is not possible to query
it for the
On 02 May 2015, at 21:11, Anatol anatol2...@gmail.com wrote:
Henk,
Its a real problem, if the streams are un-aligned, the playback gets into
jump-forward-backward mood.
If you create a 5min source file and split in 5 1 minute chunks with the help
of the hls function of ffmpeg.
Then create
Sorry, I misread the original request. The command being used is :
./ffmpeg -i
/Users/jeremylk/Dev/Ruby/workspace/video_encoder_app/Breathing_5s.mov -vf
cropdetect=24:16:0 dummy.mov
On Sat, May 2, 2015 at 3:29 PM, Jeremy genericin...@gmail.com wrote:
Sure thing. Below is the output from 2.5.6
Sure thing. Below is the output from 2.5.6 (the last working version)
followed by the output for the same command / same file using 2.6, when the
behavior for cropdetect changed. Notice how the values for the 2.6 output
show no crop detected. This is consistent in everything post-2.6.
Everything
I haven’t had much luck deploying ffserver, nothing works out for me
streaming live from ffmpeg to ffserver. Had different problems, I don’t
know if my configuration is correct but, can’t really get ffsever to do
what I need and things are just frustrating me.
The last error message I’m getting
Jeremy genericinbox at gmail.com writes:
I can provide output data to support this
Please only provide your failing command line
including complete, uncut console output if
you want the issue fixed.
Carl Eugen
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ffmpeg-user mailing list
Henk,
Live streaming, not files.
On Sat, May 2, 2015 at 10:32 PM, Henk D. Schoneveld belca...@zonnet.nl
wrote:
On 02 May 2015, at 21:11, Anatol anatol2...@gmail.com wrote:
Henk,
Its a real problem, if the streams are un-aligned, the playback gets into
jump-forward-backward mood.
If
Hi all,
Cropdetect seems to be broken since 2.6. I noticed this the other day with
a new build for my encoding app, which pulled 2.6.2. Cropdetect no longer
worked with 24:16:0 variables. Pushing the threshold variable up to 65
created different values, but they were negative an incorrect.
2.5.6
On 4/21/15 2:51 AM, Marton Balint wrote:
On Mon, 20 Apr 2015, Deron wrote:
On 4/20/15 4:22 PM, Marton Balint wrote:
On Mon, 20 Apr 2015, Deron wrote:
On 4/20/15 1:48 PM, Marton Balint wrote:
On Mon, 20 Apr 2015, Deron wrote:
Another user has contacted me with the exact same problem
you can get it from this command line sudo apt-get install libfaac-dev
if not work you can try with compiling source## GET FAAC cd
$BUILD wget http://downloads.sourceforge.net/faac/faac-1.28.tar.bz2 tar -xjf
faac-1.28.tar.bz2 cd faac-1.28
./configure
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