Ricardo Kleemann ricardo at americasnet.com writes:
Does it work if you only record audio?
I’m not sure where the crazy start time comes from,
but yes, the audio works fine if done separately.
Does -vsync 0 help?
Did you explain which hardware device this is?
Carl Eugen
Kieran O'Leary kieran.oleary at irishfilm.ie writes:
Carl Eugen Hoyos writes:
This should be -framerate 24
Is this because I'm using an image sequence?
Yes, you should only use the input option -r
if you have a reason (changing the speed of the
input stream).
-r 24
Remove
Budgie ajebay at errichel.co.uk writes:
therefore the seek mechanism of the player I am
using does not work.
Does seeking in the original file works with ffplay?
(Does it work with -vn?)
If yes, you should probably write to the author of
the player you are using.
Carl Eugen
Peter Rabbitson rabbit+list at rabbit.us writes:
I have a Logitech C920 affected by a know-yet-wontfix kernel uvc-video
bug[1]. Given That I need a relatively recent kernel and it looks like
the problematic patch in 3.17+ will not be reverted, I am hoping that
ffmpeg can somehow help me
Deron deron at pagestream.org writes:
I would have to get ffmpeg to work to begin with
to test that. Should I try ffmpeg without librtmp?
That would be a good idea imo.
Carl Eugen
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Budgie ajebay at errichel.co.uk writes:
Does seeking in the original file works with ffplay?
I cannot answer your question because I do
not know how to try seeking from a console.
(I don't understand what you are saying here.)
Did you try playing your input file with ffplay?
Does it play?
linxs linxsy at gmail.com writes:
-color_primaries 1
Is this really a valid option?
(I thought it is not.)
Carl Eugen
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MrNice wxcvbn2006 at iol.ie writes:
Input #0, pulse, from 'alsa_input.pci-_00_14.2.analog-stereo':
Duration: N/A, start: 1437724175.042321
Input #1, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 1349.084272
This is a major issue, you may try options like
the
Kieran O'Leary kieran.oleary at irishfilm.ie writes:
-start_number 867116 -r 24
This should be -framerate 24
-r 24
Remove this one unless there is a (specific) reason.
ffmpeg version 2.7.1 Copyright (c) 2000-2015 the FFmpeg developers
On this mailing list, this is old...
Deron deron at pagestream.org writes:
Well, my rtmpdump _does_ work. It claims to be v2.4 and I was able to
get the stream and pipe it to ffmpeg. Inelegant, but it works. Sadly,
the audio/video is out of sync by about 75ms. Just enough to be annoying.
Does the same desync exist with FFmpeg?
MrNice wxcvbn2006 at iol.ie writes:
I am confused. What should be the best codec for
my usage: FFV1, x264, Huffyuv, other?
I believe I suggested -vcodec mpeg2video -mbd 2 -qscale 2
and I didn't change my opinion;-)
ffv1 is lossless, mpeg2video is not and x264 is not
lossless unless you
Moritz Barsnick barsnick at gmx.net writes:
configuration: --enable-librtmp
Looks like someone needs to do a git bisect. (Not me. :))
But you could test without --enable-librtmp.
Carl Eugen
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Francois Visagie francois.visagie at gmail.com writes:
I.e. either use a codec designed for lossless encoding
such as HuffYUV, or use something like x264 with
lossless settings.
FFv1 should be superior in (nearly) every regard, for
example you would need several different x264 libraries
andrew andrew.david.strong at gmail.com writes:
The most recent git FFmpeg does not add meta tags to
mp2 files when using the native encoder.
Yes, you can use -f mp3 to get the tags for the
output file.
I suspect such files will not conform to some specification.
Carl Eugen
Peter Rabbitson rabbit+list at rabbit.us writes:
I am hoping that ffmpeg can somehow help me with a
workaround.
You can try the input option -r, unfortunately
it does not work for many use-cases.
FFmpeg is not very good with h264 timestamps...
Carl Eugen
Moritz Barsnick barsnick at gmx.net writes:
On Sat, Jul 25, 2015 at 13:40:21 +0200, James Darnley wrote:
On 2015-07-25 13:33, Kimio Miyamura wrote:
Now I'm curious about why -metadata artist=Jody Marie
Gnant does not affected to the output...
Does anyone know why?
Because
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
Leo Izen leo.izen at gmail.com writes:
https://dl.dropboxusercontent.com/u/51080973/h264_pixfmt_matroska.mkv
I opened ticket #4725, thank you for the sample!
The size limit of course assumes that the length
is sufficient to reproduce the original issue, a
10G sample was uploaded once because
我是科学家 summerpulse at qq.com writes:
I hava a AVI file which, according to ffmpeg, has
frame rate of 1000. But we know that's incorrect.
Please provide the sample
Here is what ffprobe said about the file:
Please provide the complete, uncut console output,
not an excerpt.
Carl Eugen
Christian Johannesen chrisjohannesen at gmail.com writes:
I'm wondering if it is possible to preserve or set
the color_space, color_transfer color_primaries
in a conversion to a MOV container format.
You currently have to pass the following options:
-color_primaries
-color_trc
-color_range
test id testidchat at gmail.com writes:
android-ndk-r9
The current version is r10e, is there a reason
you are compiling with an old version?
Carl Eugen
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James Darnley james.darnley at gmail.com writes:
PIBUILD appears to be undefined. CCPREFIX appears to be
undefined. PIUSR appears to be undefined. You really need
to check your environment or just type out the values.
I'd like to add that it is much better imo not to
use these variables
我是科学家 summerpulse at qq.com writes:
Obviously, the fps and tbr are still wrong,
Why do you think so?
I posted the file here: http://pan.baidu.com/s/1eQIY63o
This file contains 43044 frames and is a little over 43
seconds long.
That makes 1000fps afaict...
Carl Eugen
Moritz Barsnick barsnick at gmx.net writes:
I may be on the wrong track here, but it sounds a
bit like my experience with Windows Media, i.e.
WMV files: The container says 1000 fps, because
the format is inheritantly (?) vfr.
That is (at least to some degree) correct for asf
but the
MrNice wxcvbn2006 at iol.ie writes:
[video4linux2,v4l2 at 0x2770c40] interrupted
Please test the following:
$ ffmpeg -i /dev/video0 out.avi
Moreover with alsa, this command was working few
months ago and not working now :
Then please run git bisect to find the change
introducing the
wqmffmpeg wqmffmpeg at 163.com writes:
how to build ffmpeg in armv8a phone?
If you want to build on your armv8a phone,
just run ./configure like on any system.
To build for armv8a, you need a cross-compiler.
Just run configure with cross-prefix or cc to
point to the correct compiler.
For
wqmffmpeg wqmffmpeg at 163.com writes:
And do you know how to build ffmpeg on arm64 platform?
Yes.
Please see my first message:
To build for armv8a, you need a cross-compiler.
Just run configure with cross-prefix or cc to
point to the correct compiler.
If you need more information,
MrNice wxcvbn2006 at iol.ie writes:
[video4linux2,v4l2 at 0x1d33fa0] Thread
message queue blocking; consider raising the
thread_queue_size option (current value: 8)
Thread message queue blocking;
What does this warning mean?
How to remove it?
Are you sure that you read the message?
Dennis Azevedo azevedodennis at gmail.com writes:
I'm trying this code: ffmpeg -re -i localFile.mp4
-c copy -f flv rtmp://Wowza server:1935/live/streamName
Complete, uncut console output missing.
Carl Eugen
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nicolab robelt2525 at gmail.com writes:
ffmpeg -f lavfi -i rgbtestsrc=d=10,format=yuv420p
-vcodec libx264 rgbtestsrc.mp4
This is visually rgb color[z] overlayed video.
ffmpeg -i rgbtestsrc.mp4 -vf
split[x][z];[x]format=gray[x1];[x1][z]overlay
-vcodec libx264 10.mp4
This is visually
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
MrNice wxcvbn2006 at iol.ie writes:
And now the output audio file is perfect, not distortion,
no static.
Great!
Now I have to learn pulseaudio commands, do you have a link?
I am sure you will easily find something, the reason
I don't know anything about it is that normally
pulse is the
eolinwen at gmail.com eolinwen at gmail.com writes:
@Carl
(If you mean me.)
In this documentation : http://trac.ffmpeg.org/wiki/Encode/H.264
I just saw this article more or less for the first
time, so I am sorry, I cannot comment.
Carl Eugen
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Gabriel Pettier gabriel.pettier at gmail.com writes:
/home/tangible/Dev/ffpyplayer/ffmpeg/lib/libswscale.a(rgb2rgb.o):
relocation R_X86_64_PC32 against symbol `ff_w' can not be used when
making a shared object; recompile with -fPIC
How does the FFmpeg configure line look like?
What is
Roger Pack rogerdpack2 at gmail.com writes:
./configure --extra-cflags=-fno-omit-frame-pointer
--disable-optimizations
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Christoph Gerstbauer gmail.com> writes:
> ffplay test.avi -vf yadif=1
>
> does not work for me, too.
Unfortunately, "does not work" is not something I can
help you with, sorry.
(In no language)
Note that FFplay is more a testing application and less
a video player (like vlc or MPlayer).
Moritz Barsnick gmx.net> writes:
> On Fri, Oct 23, 2015 at 15:01:30 +0200, Christoph Gerstbauer wrote:
> > I am using following syntax to deinterlace TFF
> > content, but I only get 25p output. How can I
> > force ffplay to output 50p? "-r 50" is not working.
> >
> > ffplay -i test.avi -vf
Dethof, Alexander Martin campus.tu-berlin.de> writes:
> >> ffmpeg -re -y -i input.hevc -an -f rtp_mpegts rtp://127.0.0.1:1234
Command line and complete, uncut console output missing.
(-re, -y and -an look unneeded.)
Carl Eugen
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RangerZz 张 ffmpeg.org> writes:
> I hope it can help you and very thanks for your
> ffmpeg-iOS- build-script.
We neither provide nor support such a script,
your mail explains the main reason.
We do test ios compilation regularly (daily) though.
Carl Eugen
Kevin Wells hotmail.co.uk> writes:
> Hi, I am trying to specify a single mono channel to be
> named 'Center' when viewed in Quicktime player, I know
> that technically specifying FC is mono, but in my user
> case I need it to actually be named 'Center', not
> 'Mono'.
Please explain the
Kevin Wells hotmail.co.uk> writes:
> We deliver Quicktime Prores files with embedded audio
> to various VOD platforms that MUST be labeled in this
> very specific way,
Could you name the platforms?
It would be useful for the (future, possible) commit message.
Carl Eugen
Mel Matsuoka gmail.com> writes:
> Just for my newbie-enlightenment, is there a reason
> why people seem to prefer using the
> "frame_rate_num/frame_rate_den" syntax for defining
> the frame rate, rather than--as in my case--simply
> defining the framerate as a float number like "29.97"?
I
Mel Matsuoka gmail.com> writes:
> I had to add the "setfield" filter in order to
> flag the UFF field order in the encoded ProRes
> (Final Cut Pro was still interpreting it as a
> Progressive file, even though the interlacing
> was baked in to the file).
Do you know how this should be
On Tuesday 27 October 2015 12:03:33 pm Carl Eugen Hoyos wrote:
> Mel Matsuoka gmail.com> writes:
> > I had to add the "setfield" filter in order to
> > flag the UFF field order in the encoded ProRes
> > (Final Cut Pro was still interpreting it as a
Carles Vila gmail.com> writes:
> Hi, I'm in the same boat. Would be very useful to fix this.
> It was mentioned before that Amazon Prime and Google play
> ask for ProRes for their VOD platforms.
How is this related to the fact that the mov muxer can't
be told how to mark mono channels in the
Przemysław Sobala grupawp.pl> writes:
> Is there a way to get JPEG image quality factor
> in ffmpeg/ffprobe?
You can do: ffmpeg -i image -loglevel debug
The "qscale" value(s) shown correspond(s) to the
quality, "0" means "100%".
Remember that "normal" jpeg is always lossy,
100% does not mean
MrNice iol.ie> writes:
> When I capture some video with the CL
> ./ffmpeg -debug 1 -f v4l2 -ts mono2abs -channel 1
> -video_size 720x576 -pix_fmt yuyv422 -thread_queue_size 512
> -i /dev/video0 -c:v ffv1 -level 3 -g 1 -aspect 4:3
> -pix_fmt yuv422p /Store3/Test/t_`date +%Y%m%d_%H%M`.mkv
>
Tom Grant gmail.com> writes:
> The question stands with LGPL or GPL.
The situation would be very different.
> Can I use a browser-based version of ffmpeg without
> having to release my whole project as open-source?
Are you distributing binaries based on FFmpeg source code?
How does your own
Jim Kang harvard.edu> writes:
> The problem is I need my video to be encoded such that
> it conforms to the MIME codec string
> 'video/mp4; codecs="avc1.*42E01E*, mp4a.40.2"'.
Could you explain why?
If a server requires this, it seems broken to me but
maybe I am missing something?
> But
Jim Kang g.harvard.edu> writes:
> It is not the server, but rather the browser's
> MediaSource.addSourceBuffer method that requires
> this MIME type:
I guess you will request a new option from the x264
developers (to ask certainly makes sense, I don't
know if the option really makes sense)
Kevin Wells hotmail.co.uk> writes:
> Hi Carl, now we've established this issue,
I believe it was established months (or years?) ago.
> is there a proper way to go about trying to get
> this addressed?
You can either send a patch or wait until somebody
else sends one.
> Although there is
Marcelo Boufleur gmail.com> writes:
> ffmpeg -i inputFile -vf "telecine=top:23" -r 3/1001
Why is "-r 3/1001" necessary?
Is there a bug?
Note that "23" is the default but "2332" is
supposed to produce nicer output.
Carl Eugen
___
Kevin Wells hotmail.co.uk> writes:
> ffmpeg -i inputFile -vf "telecine,setpts=N/(3/1001*TB)
Why is setpts necessary?
Is there a bug?
Carl Eugen
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Tom Grant gmail.com> writes:
> Most of it uses the LGPL, but an encoder that I need
> (specifically libx264) are licensed under GPL I believe.
So you do not have a license problem with FFmpeg but
with x264 or do I misunderstand?
Carl Eugen
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Tom Grant insidersense.com> writes:
> but as ffmpeg is GPL’d
Why do you think that FFmpeg is GPL'd?
Carl Eugen
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Alexander Dethof campus.tu-berlin.de> writes:
> $> ffmpeg -i sintel.hevc -f rtp_mpegts
> -bsf:v hevc_mp4toannexb rtp://127.0.0.1:1234
You don't tell FFmpeg what it should do with your
input video stream, and it defaults to mpeg4 (asp)
encoding. My guess is that you wanted to use:
-c:v copy
Virgil Stokes it.uu.se> writes:
> How can one extract the type of video file when it has a name that
> gives no hint as to what type of video file it is (e.g. e45612mj is the
> name of the file)?
> Note, there is no suffix (file extension).
FFmpeg ignores the suffix / file extension.
Carl
Alexander Dethof campus.tu-berlin.de> writes:
> [mpegts0x35cc680] first pts value must be set
FFmpeg always had issues with h264 timestamps, your
report indicates that the same might be true for hevc.
ffmpeg -r 25 -i input.hevc should work but does not.
Remuxing to mov first helps, you
Moritz Barsnick gmx.net> writes:
> With my means and the (very) little knowledge of
> the MOV format I have, I couldn't yet detect the
> difference in those files. I suspect it's in the
> atoms, perhaps.
The chan atom to be precise.
Carl Eugen
Przemysław Sobala grupawp.pl> writes:
> It turns out that it's some kind of 1/x relationship.
Definitely.
> Do you maybe have a final formula?
No.
I would have expected that "JPEG Quality" is not a
strictly defined term but I may of course be wrong.
(I never read the standard.)
Carl Eugen
Nithiwat Maneesint gmail.com> writes:
> I receive the data in bytes then I decode the video
> to YUV420p and the audio to pcm_s16le in Java, then I
> send the decoded video and audio data (in bytes) to
> ffmpeg via pipe:0 (video) and a udp socket (audio).
>
> The problem is that, the video
Sven Van den brande outlook.com> writes:
> http://pastebin.com/3BU6jf8R
For future questions, please always paste all relevant output
here on the mailing list, do not use external resources.
You can try to reduce the initialisation time with -probesize
and -analyzeduration
Carl Eugen
writes:
> i found this error
> Unrecognized option 'stream_loop'.
Command line and complete, uncut console output
missing, and please remember to always test
current FFmpeg git head before posting questions
here.
Do not top-post here, Carl Eugen
Lou lrcd.com> writes:
> > Is it possible to use ffmpeg to convert video files
> > from a Samsung PVR CCTV system to something that
> > Audacity can read? The system encodes the
> > video across multiple files (.bu .db2 .eve .sec)
>
> Please provide sample files if possible.
Yes, please!
C E Macfarlane macfh.co.uk> writes:
> FFMPEG 2.8.1 configured as follows:
Please remember that on this mailing list,
only current git head is supported.
> ./configure --enable-gpl --enable-nonfree
Please remove --enable-nonfree from your configure
line.
> --enable-libopenh264
Just
Christian Herglotz fau.de> writes:
> Mean decoding times for FFmpegHM
> 460*240 1 I-frame: 0.15s0.18s
> 460*240 2 I-frames:0.23s0.36s
I may absolutely misunderstand what you are trying
to show but please understand that
Joseph L. Casale activenetwerx.com> writes:
> I tried Windows Media Player and it was ok
The colours are expected to be wrong because
WMP does not support yuvj420p (only yuv420p).
vlc doesn't like low-fps video files.
Carl Eugen
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Gemma Cockcroft cam.ac.uk> writes:
> > http://www.datafilehost.com/ or
> > http://streams.videolan.org/upload/
> > are possibilities.
Did you read this?
> Continued from last week... (need audio from
> video files created on a Samsung PVR CCTV system)
Could you elaborate?
So far you did not
Ran Shalit gmail.com> writes:
> Do you think that it is better to do it with ffmpeg
> for the streaming purpose, or better do it with
> live555 library instead ?
You cut the most important part of my original answer:
> > Fortunately, you can use the ffmpeg executable first
> > to test if
alan1523 aol.com aol.com> writes:
> $ ffmpeg -y -i "/Volumes/storage/rendertemp/in/input.mp4"
> -movflags faststart -frag_duration 1000 -codec:v libx264
> -profile:v baseline -pix_fmt yuv420p -b:v 500k
> -codec:a aac -b:a 96k -strict -2 -s 426x240 -threads 0
>
Jogh <163jogh 163.com> writes:
> Since currently the configure file in ffmpeg don't
> support mingw other than mingw32.
> ``` slice in ffmpeg/configure
> exesuf() {
> case $1 in
> mingw32*|win32|win64|cygwin*|*-dos|
> freedos|opendos|os/2*|symbian) echo .exe ;;
> esac
> }
$
On Friday 09 October 2015 05:04:35 pm Jim Shupert, Jr. wrote:
> Friends,
>
> It is my understanding that ffmpeg could once upon a time
> work with red camera files.[ fl.R3D ]
Only old files are "supported" but only raw Bayer data can be
outputted, the used colour space was never supported
On Thursday 09 July 2015 06:48:42 pm Piers O'Hanlon wrote:
Hi,
I've been trying to capture multiple audio channels using ffmpeg on OSX -
specifically I've been trying to capture from the Soundflower 64 channel
input device
Just being curious: Is this hardware or software?
configuration:
John Pilgrim lists at johnpilgrim.net writes:
We strongly encourage all users to use a current
snapshot build instead of a release build.
This is not optimal because we only provide
source code, no binaries.
All uses are recommended to use the current
snapshot build instead of the
Tom Evans tevans.uk at googlemail.com writes:
H264, H265 are codecs. Codecs generally do not have
headers, but are stored in containers, and containers
have metadata (headers) that indicate what codec is
stored in the container.
Note that both h264 and h265 are also (the names of)
Phil Rhodes phil_rhodes at rocketmail.com writes:
I may just misunderstand but ProRes does not
support RGB (only YUV).
ProRes in general certainly does.
Please provide such a sample.
(ProRes is 10bit YUV-only)
Carl Eugen
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Phil Rhodes phil_rhodes at rocketmail.com writes:
Don't be so bloody rude.
What wording do you suggest?
ProRes stores ten bit YUV, both with and
without chroma-subsampling and with and
without transparency information.
If a white paper now claims that ProRes
stores RGBA what else than
Kieran O'Leary kieran.oleary at irishfilm.ie writes:
I exported the sequence as a same as source quicktime.
Please also provide the mov file.
Carl Eugen
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Kieran O'Leary kieran.oleary at irishfilm.ie writes:
That scares me! The bitrate looks close to v210
(220Mbps vs 213Mbps), but it's actually 8-bit video?
You can use the following inlined patch to check
for yourself.
PLEASE fix your mailer!
Paul, will you implement a patch for the original
sebastian at kleutghen.eu sebastian at kleutghen.eu writes:
to install the latest version 2.7.1.
(This is not the latest version.)
Unfortunately, I get the following error message:
If you think configure made a mistake,
There should be something printed before this
message.
You could
Александр madnessw at ya.ru writes:
[...]
Please test with current FFmpeg git head.
Carl Eugen
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nicolab robelt2525 at gmail.com writes:
Output is gray format. This is OK.
^^
ffmpeg -i rgbtestsrc.avi -ss 1 -vf
split[x][z];[x]format=gray[x1];[z][x1]overlay
-vcodec libx264 3.mkv
The format of the output of the overlay filter
is yuva420p. This is not supported by
Rens Dijkshoorn rens at offlinemedia.nl writes:
ffmpeg -i test.mov -pix_fmt yuv422p -vcodec dnxhd
-b:v 120M -c:a pcm_s16le test_dnxhd.mov
The following works fine here:
$ ffmpeg -f lavfi -i testsrc=s=hd1080 -f lavfi -i sine
-pix_fmt yuv422p -vcodec dnxhd -b:v 120M -c:a pcm_s16le out.mov
Karel k.vorechovsky at gmail.com writes:
I made a library for proprietary development
enviroment called LabVIEW marketed by ni.com.
It is based on FFmpeg shared build. I wanted to
sell the library under descriptive name FFmpeg
for LabVIEW. Does such name violate the FFmpeg
copyright?
Lyman Hurd lyman.hurd at gmail.com writes:
I am trying to convert a raw interlaced file to a YUV file using:
ffmpeg -i raw_intelrlaced_footage.mov -pix_fmt yuv422p deming2.yuv
Complete, uncut console output missing.
But the resultant output looks progressive
That means that the input was
Felix Baier felixbaier-at-yahoo.de at ffmpeg.org writes:
I changed “-vcodec mpeg4 -qscale 2” to “-vcodec mpeg4 -q:v 2”
after I got a notification that the first version was
ambiguous.
For a video-only file?
ffmpeg -r 25 -f dshow -s 640x480 -i video=Microsoft LifeCam HD-5000”
Use
AB_ffmpeg ffmpeg at rgbaz.eu writes:
-have 'hvc1 / 0x31637668' as the encoding of the
h265 video stream
This may not be what you are searching for but there
is a -vtag option that you can test:
-tag:v hvc1
Carl Eugen
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Jesper Taxbøl jesper at taxboel.dk writes:
I am trying to sync two videos recorded
simultaniously from a stereo setup.
This should work with -itsoffset and specifying the
input file twice, something like (untested):
$ ffmpeg -i A.mp4 -itsoffset 0.75 -i A.mp4
-map 0:0 -map 1:1 -codec copy
Gabriel Pettier gabriel.pettier at gmail.com writes:
I tried a lot of different ones, here are a few (by order)
Did you run make distclean after each try?
What version of FFmpeg is this?
I was unable to reproduce your issue with the following
command:
$ ./configure make
郑建峰 163jogh at 163.com writes:
tlf-trumanshow.bd.Eng.3d.srt - (mean to be) SBS
subrip file generated by some 2d-to-3d soft
I created ticket #4810.
Thank you for the sample!
Carl Eugen
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Carles Vila gmail.com> writes:
> I've run into a problem when converting a j2c image
> sequence to ProRes.
Sorry, I thought the artefacts are intended...
You need to use ffmpeg -vcodec libopenjpeg -i frm%6d.j2c
to use the libopenjpeg decoder.
I updated the ticket, Carl Eugen
Carles Vila gmail.com> writes:
> Anyway I'm going to update to the latest version.
Please do and report back.
(There may be a regression...)
Carl Eugen
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Carles Vila gmail.com> writes:
> I've tested the -vcodec libopenjpeg and indeed the
> quantization artifacts are gone! But it fails to
> do the xyz->rgb conversion. (Without this option
> it does the conversion autamatically) Any option
> to force it?
$ ffmpeg -vcodec libopenjpeg -pix_fmt
Carles Vila gmail.com> writes:
> Here's the command line. I had to include
> -pix_fmt xyz12le in order to have it detect
> xyz of the jpeg2000.
> However, the output still looks posterized.
I am not sure if I understand the word posterized,
but concerning "still" the output looks very
Paul B Mahol gmail.com> writes:
> Compare native decoder output with one from ImageMagick.
Iirc, ImageMagick does not support xyz, so this is always
broken.
Carl Eugen
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Paul B Mahol gmail.com> writes:
> >> Compare native decoder output with one from ImageMagick.
> >
> > Iirc, ImageMagick does not support xyz, so this is always
> > broken.
>
> Colors are broken but there is no banding.
Yes, and you get the same broken colours without banding
if you don't
Carles Vila gmail.com> writes:
> If I include -pix_fmt xyz12, the colours are OK,
> but the dark levels seem posterized.
So it seems that Paul and I were wrong and the
issue is the xyz -> rgb conversion.
I believe there was another possibility to
convert, not sure if I remember correctly;-(
Rick C. gmail.com> writes:
> ffmpeg version 2.7.1
For future questions, please remember to always test
current FFmpeg git head.
> Only audio streams and pictures are allowed in AIFF.
Should have been:
Only one audio track is supported in aiff.
Should be fixed, thank you for the report!
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