Simon Daniels simondaniels23@... writes:
Is it possible to call an ffmpeg API to get the list of video types
that it supports for decoding and encoding?
See opt_codecs() in cmdutils.c ('ffmpeg -codecs').
I'd want the associated file extensions as well.
Decoders and encoders are not
Bruce Wheaton bruce@... writes:
I have a fairly simple .mov with one track of stereo PCM 16-bit audio.
Quicktime has the channels tagged as left and right. When I open the file with
libavformat libavcodec, I get the 'Unimplemented container channel layout'
warning and it won't play properly
Andrey Utkin andrey.krieger.utkin@... writes:
The dump is: ftp://golosimperii.org/tmp/dump.ts
Fixed in current git head, thank you for the sample!
Carl Eugen
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Harry Ma hooxer@... writes:
I wonder when a avfilter is applied? is it applied before encoding/decoding or
after that?
I don't think a (video) filter could do anything useful if it is not applied
after decoding and before encoding.
Please do not cross-post, this is considered rude, Carl Eugen
Robert Nagy ronag89@... writes:
As title the title says. I would like to request that RGBA support was added
to
the huffyuv decoder.
I found a sample:
http://samples.mplayerhq.hu/V-codecs/HuffYUV/camera2_hfyu32.avi
Decoding works fine, encoding RGBA (ff)huffyuv is broken afaict.
Carl Eugen
aviad rozenhek aviadr1@... writes:
I want to disable probing for streams which arent video or audio.
is there a way to do it?
Does -analyzeduration help?
[...]
avprobe version v0.7-749-g2214191, Copyright (c) 2007-2011 the Libav
This is very broken and unsupported here.
Please see
=?iso-8859-1?Q?Max_G=F6ttner_-_d.stream?= writes:
I read frames from input files, use swscale to have raw rgb images. I would
like to write these images to a Mkv container, keeping the frames in raw rgb.
How can this be obtained?
What codec do I have to use?
I tried CODEC_ID_BMP but I
Simon Daniels simondaniels23@... writes:
I'm running 64-bit Lion but I need to compile a 32-bit version of
ffmpeg because another library I'm using is only available as 32-bit.
I've tried a number of different configurations but they're all giving
me errors. Here's what I've tried:
Simon Daniels simondaniels23@... writes:
gcc -m32 -I. -I/Users/user/Downloads/ffmpeg-0.8.7 -D_ISOC99_SOURCE
-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DHAVE_AV_CONFIG_H -std=c99
-mdynamic-no-pic -fomit-frame-pointer -g -Wdeclaration-after-statement
-Wall -Wno-parentheses -Wno-switch
=?iso-8859-1?Q?Max_G=F6ttner_-_d.stream?= writes:
Is there any reference or example that tells me, which attributes of the
AVCodecCtx have to be set in order to get the rawvideo-encoding work?
Assuming you are only interested in mkv: Did you look into matroskaenc.c?
I suspect you have to set
Camera Man i.like.privacy.too@... writes:
would it work to patch ff_h264_decode_init() and decode_postinit() to also
check the AV_DISCARD mode, and if we are discarding B and/or nonref frames,
would set avctx-has_b_frames=0 and low_delay=1 ?
I don't know but I suggest that you write such a
Simon Daniels simondaniels23@... writes:
Thanks guys but omitting -fomit-frame-pointer in the last gcc call or
replacing it with -fno-omit-frame-pointer resulted in the same error
(trying both gcc and clang).
[...]
make V=1 of clang is:
clang -m32 -I. -I/Users/user/Downloads/ffmpeg-0.8.7
Shachar Arieli shachara@... writes:
I have an application which is required to create a video file (only video no
audio) which is readable by the Microsoft media player (latest version).
Which version?
Carl Eugen
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Simon Daniels simondaniels23@... writes:
4. Repeated #2 and #3 with clang on current git head and got the same errors
Next tests:
Could you provide the output of
$ grep HAVE_EBX_AVAILABLE config.h
$ grep HAVE_EBP_AVAILABLE config.h
(I assume it is identical for clang and gcc, is it?)
And
=?iso-8859-1?Q?Max_G=F6ttner_-_d.stream?= writes:
Resulting files seem ok, when analyzing them with mkvinfo (from mkvtoolnix),
filesize is also like you'd expect. However no player is able to replay
them.
mplayer -demuxer lavf ?
Libav succeeds in opening and recognizing the format but
Alex Cohn alexcohn@... writes:
On Mon, Dec 5, 2011 at 12:30, kunkka cai sycsdr@... wrote:
Hi,
I'm developing a free (in price) software which should be able to play mp3
files. I know ffmpeg is a great codec, so I want my application to link
against it.
Actually I have built some Dlls
Alex Cohn alexcohn@... writes:
PS I often find the reactions to licensing questions on this and other
open software lists intimidating. I believe that open software should
(pun intended) be promoted, among other ways, by making it easier to
understand and use, even at risk of somebody
Kirell Benzi kirell.benzi@... writes:
I'm new to ffmpeg, I would like to know if it is possible to extract an image
embedded in an audio file, aka audio cover and how to do it.
Does the output of ffmpeg -i yourfile indicate that the images are detected?
Carl Eugen
Christian.Jorgensen@... writes:
Does anyone have an idea what could be the problem?
Please provide a sample.
Carl Eugen
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Chris Ballinger chrisballinger@... writes:
ffmpeg reports the following:
[caf at 0x7fbee284ac00] Missing packet table. It is required when block
size or frame size are variable.
Did you try to enable full parsing and set any fixed block size in the demuxer?
Text-only mails are preferred
Dan Stuart dstuart@... writes:
I know that FFmpeg supports libx264.
However, I want to use this in a commercial product.
I know you can get a commercial license for
libx264 from the company CoreCodec,
and we are planning on paying all the legal patent fees.
Can libx264 be compiled
Andrey Utkin andrey.krieger.utkin@... writes:
Yes, except if multithreaded decoder/encoder will log something from
its thread pool.
Their multithreading is disabled by default,
I don't think this is correct anymore.
Carl Eugen
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肖波 13760746839@... writes:
I called the ffmpeg API to decode video files.But I found that it have
problems for some TS files.During my decode process is running,sometimes the
application crashes.
Then please provide a backtrace and a very significantly shorter sample (~5MB,
you can cut ts at
francesco@... writes:
I'm attempting to encode in PIX_FMT_YUYV422 using libavcodec.
It's not clear to me the format of input raw data. I understood that
all pixel should be in 16 Bit format, but in buffer, how should be inserted
data ? That is, if locpFrame is a pointer to an AVFrame, I
Carl Eugen Hoyos cehoyos@... writes:
locpFrame-data[0] = The buffer containing packetized samples,
Y0,Cr0,Y1,Cb0,Y2,Cr1,Y3,Cb1
This is approximately PIX_FMT_YUYV422
I should add that afaict, rawvideo is the only encoder that supports
PIX_FMT_YUYV422, so I don't think that is what you
francesco@... writes:
locpFrame-data[0] = The buffer containing packetized samples,
Y0,Cr0,Y1,Cb0,Y2,Cr1,Y3,Cb1
This is approximately PIX_FMT_YUYV422, but I suspect you have Cr and Cb
swapped,
please see libavutil/pixfmt.h
(Or is the comment wrong there?)
[...]
why you state
francesco@... writes:
the comment is not clear
too. It says :
/// planar YUV 4:2:2, 16bpp, (1 Cr Cb sample per 2x1 Y samples)
even though the two Croma are inverted, the difference will be in colors.
If they are swapped (little endian instead of big endian due to the fact
that is in
Valérian contact@... writes:
I directly receive compressed h264 avc1 frames that I want to write to a
transport stream.
Does it work with ffmpeg (the application)?
Carl Eugen
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Valérian contact@... writes:
[h264 @ 0x101031600] non-existing PPS 0 referenced
[h264 @ 0x101031600] decode_slice_header error
[h264 @ 0x101031600] no frame!
[h264 @ 0x10101ae00] Could not find codec parameters (Video: h264)
[h264 @ 0x10101ae00] Estimating duration from bitrate, this may be
Valérian contact@... writes:
http://dl.dropbox.com/u/28482555/output.h264
Which software can read this file?
The JVT reference decoder fails.
Carl Eugen
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Simon Daniels simondaniels23@... writes:
I'm using the -ss and -t flags to trim a section of video out of a
longer original one. As an example, if the video is 60 minutes long,
and I want minutes 50-52, ffmpeg takes quite a while to get to that
point. I'll see something like the following (I
John Dexter jdxsolutions@... writes:
2. I had some concerns reading about the legal side, GPL and LGPL. Our
software is totally closed source and while we use LGPL libraries, it
sounded like some parts of ffmpeg are GPL-only. Will this realistically
affect me
It is your choice if you
John Dexter jdxsolutions@... writes:
Please consider reading the License Compliance Checklist on
http://ffmpeg.org/legal.html and if you think anything is not
clear on this page, please report!
Since you mention it, I would prefer a list of what I MUST
do and a list of what you PREFER
John Dexter jdxsolutions@... writes:
[About http://ffmpeg.org/legal.html ]
That page includes distribute the ffmpeg source code.
IIRC that's not a requirement for LGPL?
It is a crystal-clear requirement.
Carl Eugen
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NITIN GOYAL nitinkumgoyal@... writes:
I am able to decode the g729 but not g711.
Command line and complete, uncut console output missing.
And consider providing a sample.
Carl Eugen
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John Dexter jdxsolutions@... writes:
obviously I have no problem providing source if asked to,
You misunderstand:
If you don't want to accompany your binary distribution with the
corresponding source code, you have to add a legally binding written
offer that you will provide the source code
Carl Eugen Hoyos cehoyos@... writes:
I read somewhere that including a link to where users could download
the source themselves can be counted as distributing the source?
... do exactly this as explained on http://ffmpeg.org/legal.html
(because we think you can argue
Daniel Henell henell@... writes:
However there doesn't seem to be any video codec that can handle 8
bit grayscale video.
grep GRAY16 libavcodec/*.c
shows jpegls, ffv1 and libopenjpeg as codecs that do support 8 bit
grayscale video.
Carl EUgen
___
Daniel Henell henell@... writes:
I tried encoding the depth frames as ffv1 using the following command:
ffmpeg -r10 -i data/d-%06d.pgm -sameq -vsync1 -vcodec ffv1 vid.mov
However I got the following output and errors:
Incompatible pixel format 'gray16le' for codec 'ffv1', auto-selecting
amir.rouhi@... writes:
BTW i am using FFMPEG on windows with win xp platform.
does it make any causes for such errors?
ffmpeg -i D:\test\1.mpg -vf select=eq(pict_type\,I)
I know this will not really help you, but both above line and
your original single quotes work fine on a Linux shell.
Deron deron@... writes:
The other concern is that the way the decklink library is written, the
decklink libavdevice will need to be c++. Does that pose a problem for
the maintainers? The main incentive to me to do it as a libavdevice
would be to get it included in the project (obviously as
jan hölscher jan.hoelscher@... writes:
AVCodec *p = NULL;
int a = 0;
while ((p = av_codec_next(p))) {
if (p-encode ) {
There is an additional API now that defines p-encode2() instead.
Please do not top post here, Carl Eugen
___
John Dexter jdxsolutions@... writes:
On 23 February 2012 12:07, Phil Turmel philip@... wrote:
Finally, whatever the legality, it is at least rude to hijack an open-
source app's website bandwidth to deliver source code to *your* users.
Apart from the inherent problem of defining social
Deron deron@... writes:
Taking Nicolas George's suggestion, I have created a basic
libavdevice for Blackmagic's DeckLink HD-SDI cards.
Then please send the patch to ffmpeg-devel where it can be discussed
(and later applied).
Consider running tools/patcheck over your patch and please note
John Dexter jdxsolutions@... writes:
I have a single-thread application which does 3D rendering; it is a
moderate-heavy user of the single core it uses (~50%). In my quick
tests, recording the rendered output to video using libav is fastest
when I use AVCodecContext::thread_count == 3 on my
Andrey Utkin andrey.krieger.utkin@... writes:
Now you talk about your hardware decoder... Maybe you should better
ask straightly what your mission is, like transcode a movie for
playback on dvd-player CORPORATION MODEL100500.
I thought I am the only one who did not completely understand what
卜弋天 buyit@... writes:
you do no want anybody report bug???
I believe that if you look at our bug tracker (and compare it to the
trackers of similar projects) you will find out that we are *very*
interested in bug reports.
Unfortunately, only reproducible bug reports (or those that include
Kalileo kalileo@... writes:
I tested it now with
./configure --cc=clang --enable-shared
and with
./configure --cc=clang --disable-optimizations --disable-asm
--disable-yasm --enable-shared
Please also test ./configure --cc=clang make and please
provide complete, uncut console output
吴沁凡 wuqinfan@... writes:
What is the difference between YUV420P and YUVJ420P?
YUV420P uses MPEG intensity, meaningful values are from 16 to 239
(16 is as black as 0, 239 as white as 255), YUVJ420P uses values
from 0 to 255.
Carl Eugen
___
amir.rouhi@... writes:
ffmpeg -i D:\test\1.mpg
-vcodec libx264 -g 0 d:\Test\11.mp4
I am not sure -vcodec libx264 supports -g,
did you test -vcodec mpeg4 ?
Carl Eugen
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Carl Eugen Hoyos cehoyos@... writes:
would it work to patch ff_h264_decode_init() and decode_postinit() to also
check the AV_DISCARD mode, and if we are discarding B and/or nonref frames,
would set avctx-has_b_frames=0 and low_delay=1 ?
You would have to discard all B-frames (because
ashika umanga umanga.forums@... writes:
I am trying to store H264 stream (x264) and Speex stream
in a MKV container. MKV file created without any errors
but when I play the file ,I cannot hear the audio.
(Minimal command line and complete, uncut console output missing.)
I just tested and
Leandro Santiago leandrosansilva@... writes:
I'm trying to cross compile ffmpeg 0.9.1 (I really need
to use this version, because my app still uses the old
API which is broken on 0.10)
Could you elaborate?
0.9 and 0.10 are intended to be binary compatible, if there
are incompatibilities,
Leandro Santiago leandrosansilva@... writes:
The new API om 0.10 replaces old AVFormatParamers, etc. by the AVDict
api... The avio_set_interrupt_cb() iss also broken on 0.10 and, as in
my app I use this function to set a timeout checker to many inputs at
the same time. In 0.10 there's one
Andrey Utkin andrey.krieger.utkin@... writes:
I'd try configure options used here
http://win32.libav...
Since this packages have several severe problems, please do
not suggest them here.
http://ffmpeg.zeranoe.com/builds/ is intended to work and supported,
please report any problems with it.
mattes effemm@... writes:
I then dug out the old lib, re-compiled ffmpeg-0.4.9 on FC15
and build against that (instead of 0.7.11) Now the problem
with varying bitrate is gone. and the encoder app becomes
usable again.
Did you also try with ffmpeg (the application)?
Carl Eugen
Robert Krüger krueger@... writes:
Did you try to read avFrame-pict_type ?
does this field have any meaning for h.264? I thought a frame could
consist of a mixture of B- P- and I-slices. What is the policy of the
h.264 decoder to set this field currently? I haven't checked recently
but I
ashika umanga umanga.forums@... writes:
I have been try to decode Speex audio for many days without success.
This is ticket #1091, consider setting yourself to CC there.
(Or simply revert 85469f.)
Carl Eugen
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Robert Krüger krueger@... writes:
my question was rather if the field _can_ make sense for h.264 as I
have not found anything in the h.264 spec saying that a frame cannot
contain a mixture of I, P, B (and other) slices. What would the value
of the field then be? Only set to a value, if all
Ajita Pandey Ajita-Pandey@... writes:
I want to encode in truehd audio.
FFmpeg currently does not support TrueHD encoding.
(Patch welcome, you can Google for an experimental MLP encoder as a start.)
[...]
::DISCLAIMER::
This does not make much sense on a public mailing list.
Carl Eugen
aviad rozenhek aviadr1@... writes:
is it possible to know if a video file is progressive or intelaced,
and what type of interlaced (TFF or BFF) is it, by using avprobe
or other libav tool?--
(Only FFmpeg tools are supported on this list, libav tools are known
to contain several hundred
hozone hozone@... writes:
Website: http://code.google.com/p/baus/
The README and the LICENSE files disagree about the license
that you used to published your project.
The FFmpeg libraries you used seem outdated.
Carl Eugen
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Craig Murray craigmurray100@... writes:
I'm having some strange behavior if I try to do the following:
ffmpeg -f image2 -r 60 -i /input-%02.png -i /input.wav out.mov
Please provide complete, uncut console output.
Carl Eugen
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Craig Murray craigmurray100@... writes:
From the command line are there are flags to set the jpeg quality
-qscale
(Note that this is in no way image2-related, you can use the
mjpeg-encoder in other containers, and there are many codecs
usable in image2 that do not support qscale.)
Carl Eugen
Craig Murray craigmurray100@... writes:
given two one-second sounds I'm trying to concatenate them
using several approaches.
You have to use the concat-protocol to concatenate files,
it does not work without.
Carl Eugen
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Gonzalo Garramuno ggarra13@... writes:
Input #0, mpeg, from
'/media/CLASH_OF_THE_TITANS_2010/VIDEO_TS/VTS_01_3.VOB':
Duration: 00:06:19.52, start: 2738.283878, bitrate: 6389 kb/s
Stream #0:0[0x1e0], 29, 1/9: Audio: mp1, 0 channels, s16
If this is an unencrypted file, please
Gonzalo Garramuno ggarra13@... writes:
On 19/04/12 11:01, Carl Eugen Hoyos wrote:
If this is an unencrypted file, please provide a sample.
Carl Eugen
How can I tell if it is unencrypted and unencrypt it?
Is audio decoding possible?
If the DVD is encrypted, FFmpeg is not the right tool
Wagner Patriota wagner.patriota@... writes:
ffmpeg -i perfect.mp4 -vcodec copy -acodec copy
-vbsf h264_mp4toannexb -y output.ts
(Assuming you get the same problem with above command)
Complete, uncut console output missing.
Carl Eugen
___
Ajita Pandey Ajita-Pandey@... writes:
I have seen both player code ie mplayer as well as VLC both have
different code than main branch libavcodec code.
This cannot be correct given that MPlayer does not contain
libavcodec source code at all, but downloads latest
libavcodec (etc.) from the
Ajita Pandey Ajita-Pandey@... writes:
As configuration file of mplayer shows that it takes ffmpeg form git repos.
while I am taking ffmpeg code directly as tar.
And both have source code difference.
Which difference?
If your tar file is new, it is the same as the git repository.
(If you
肖波 xiaobo_yc@... writes:
I found that the current git code have problems with decoding
of some of my MXF files, but the libav-0.8.1 is OK.
Could you test with current FFmpeg,
see http://ffmpeg.org/download.html ?
If one of your files does not work with current FFmpeg, please post
complete,
jettoblack jettoblack@... writes:
I tried that and for H.264 it's definitely wrong if I use the frames
in-order from the demuxer. It does work fine for MPEG-2 video.
Should I file a bug report?
Is the problem reproducible with ffmpeg -i input -qscale 2 out.avi
or ffplay file ?
Carl Eugen
jettoblack jettoblack@... writes:
When it contains H.264 video codec, the pts and
incremental order from the demuxer are definitely not in
picture display order. coded_picture_number is giving the
closest result but it is wrong on approx. every 150th
frame (key frames?).
Are you using
Goo Creations goocreations@... writes:
Hi,I'm relatively new to FFMpeg. I have a buffer in memory
of decoded samples (44100Hz, 2 channels) and I want to
encode them to 22050Hz mono.
You will have to use libswresample.
Carl Eugen
___
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Kalileo kalileo@... writes:
That's how I do it, and it works for me. Wait for the first I-frame
Don't forget that valid H264 streams do not necessarily contain I frames.
(I don't know of such a sample.)
Carl Eugen
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krishnaks@... writes:
I am getting following warning.
[swscaler @ 0x5a34000] No accelerated colorspace conversion found from
yuv420p to rgba.
Command line and complete, uncut console output missing.
Carl Eugen
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nrson nrson@... writes:
I’ve been trying to speed down for H.264 decoder. I know the lowres is
low resolution supported by the decoder.
lowres is not supported for the H264 decoder.
Carl Eugen
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amir.rouhi@... writes:
C:\ 1.264 -vsync 0 -vf select=eq(pict_type\, PICT_TYPE_I)
C:\ Test\IFrames\I-Frm-%03d.jpeg
Its a short video and i just get 4 images but the images
does not looks correct images
Could you test with the reference decoder?
If you find any difference, this sounds like
Geoffrey tn geoffrey.tn@... writes:
My problem is, it doesn't work with a MXF File. The value of
bits_per_coded_sample is all the time fixed to 0.
I tried with MXF files composed of JP2K and IMX.
Could you provide samples?
For jp2k, the (libopenjpeg) decoder will set it in the future.
Lucas Soltic soltic.lucas@... writes:
Today I noticed something weird about the enabled decoders.
Is it normal that ./configure --disable-yasm --disable-decoders
--disable-encoders --disable-muxers gives me that?
Enabled decoders:
h264
Enabled hwaccels:
h264_vda
(I can only guess
amir.rouhi@... writes:
Would you explain how can i test it with referenced decoder?
do you mean , testing by JM software?
Yes, JM is the H264 reference decoder.
If you mean this, i should say that i have extracted i
frames by JM software and they are 4 and same as the number
that ffmpeg
amir.rouhi@... writes:
I convert a mpeg1 video mpeg4/ AVC by the below command but
i dont know why the visual frame rate become double after
conversion (fps in both are same but tbr will be twice as
the original video)
But tbr is not the framerate.
ffmpeg -i
Alex Cohn alexcohn@... writes:
If I understand correctly, Amir complains about the
encoder, not the decoder.
Then your answer was clearly more helpful than mine!
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Alex Cohn alexcohn@... writes:
In ffmpeg, deinterlace is performed by avcodec (imgconvert.c
avpicture_deinterlace)
This deinterlacer is old, if you have no license issue, please
use yadif.
(If you have a license issue, contact the developer.)
Aren't there filters to interleave (if this is
Carl Lindqvist lulebo@... writes:
2012/5/24 Carl Eugen Hoyos cehoyos at ag.or.at
Alex Cohn alexcohn at ... writes:
In ffmpeg, deinterlace is performed by avcodec (imgconvert.c
avpicture_deinterlace)
This deinterlacer is old, if you have no license issue, please
use yadif.
You
Carl Lindqvist lulebo@... writes:
Yes, my input is raw SDI video. Interlaced SD 4:2:2 8bit
(or 10bit, but I use 8bit). I want the output to be
interlaced, full field rade. Right now, swscale produces
chroma samples that are scaled from both fields, which give
the effect in the image in
Carl Lindqvist lulebo@... writes:
I have not yet looked at MPlayer/libmpcodecs/vf_scale.c,
will do it tomorrow and see what I can find.
How does the ffmpeg app do it? What file should I look
at for source examples?
libavfilter/vf_scale.c (look for isws)
Not surprisingly, it looks similar
Ratin ratin3@... writes:
Hi, for h.264 decode with hardware like Nvidia's VDPAU decoding, what
should I do to cleanup the resources when avcodec_release callback is
called?
It seems that there are are some memory leaks when running
decode for long period of time.
I am only guessing since
koli@... writes:
I was trying to use ffmpeg for screen capture and come to
this problem.
(Note that ffmpeg natively supports screen capture input,
no need to use png's.)
[...]
ffmpeg -r 5 -i ./GrabedPictures/Pic%d.png -r 5 -vcodec libx264
TestX264.avi
Complete, uncut console output
Thomas H thom1948@... writes:
ffmpeg -i MyKitty.mp4 -vf scale=1280:720 -idct h264 -sameq -target
ntsc-dvd MyKitty.mpg
(Complete, uncut console output missing.)
Are you sure you want to produce a HD DVD?
Please explain what -idct h264 does, I am curious.
And please note that -sameq does not
kurdy_ch-forum@... kurdy_ch-forum@... writes:
version 0.8.1-4:0.8.1-0ubuntu1
This is an intentionally broken version of FFmpeg with several
hundred regressions, some of them security relevant, we
therefore cannot support it.
Please see http://ffmpeg.org/download.html for supported versions.
NITIN GOYAL nitinkumgoyal@... writes:
Is there any way i can modify or use the ffmpeg library
to detect the black/dark/green frames from the content?
Did you test the blackdetect and blackframe filters?
Carl Eugen
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krishnaks@... writes:
I am getting Following warning during h264 decoding using libavcodec:
Increasing reorder buffer to 1
Increasing reorder buffer to 16
Can I avoid this warning?
The message is less verbose now.
Thank you for the report, Carl Eugen
Salim, Mohamed Mohamed.Salim@... writes:
I found that AAC streams with ADIF header can not be played.
Could you provide a sample?
Carl Eugen
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Sampath Subasinghe susiriss@... writes:
I was wondering whether this is what you meant.
This is broken (because odd width is not supported by
yuv rawvideo):
ffmpeg -i ref.ppm ref.yuv
ffmpeg -s 45x32 -i ref.yuv ref2.ppm
The following does work and produces the same black edge:
$ ffmpeg -i
Krishna krishnaks@... writes:
What is my observation is after i got following debug print
Increasing reorder buffer to 16
Propation delay is more in my video streaming application.
Definitely!
(Although I don't know much about the reorder buffer.)
Please do not top-post here, Carl Eugen
Sampath Subasinghe susiriss@... writes:
$ ffmpeg -i out.ppm -pix_fmt yuv420p -strict experimental out.ljpg
$ ffmpeg -i out.ljpg ref2.ppm
I'm also seeing the black edge with above commands.
(Except, I had to precede the second command with
-pix_fmt yuv420p to avoid seg faulting
Alex Cohn alexcohn@... writes:
This is broken (because odd width is not supported by
yuv rawvideo):
ffmpeg -i ref.ppm ref.yuv
ffmpeg -s 45x32 -i ref.yuv ref2.ppm
I am not using the latest build, but for me the
round-trip worked without artifacts
I forgot to add -pix_fmt yuv420p to
Khanh Nguyen Nam nnkhanh@... writes:
I am developing an application which uses ffmpeg library as below:
Add ffmpeg binary to application source code
Call ffmpeg command line via C# code.
If you want to distribute a software binary that is FFmpeg (or a
derivative work of FFmpeg) and you
Jason LUN jason.lun@... writes:
Therefore, I would like to ask how could I use the ffplay
with dxva so that it can accelerate the decoding process?
libavcodec contains support for dxva that can be used in
videoplayers (vlc), ffplay does not contain any dxva-specific
code.
Carl Eugen
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