Hi,
Is there any audio filter to separate background music and speech with one
variant of speech as the filter input?
Thanks
Regards
Andrew
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Hi,
I use the following ffmpeg command to do some rotation effect on video stream:
ffmpeg -y -i video.mp4 -t 25 -vcodec libx264 -r 25 -preset medium
-filter_complex
Hi,
ffmpeg has supported dnn filters, i.e. dnn_classify/dnn_detect/dnn_processing,
according to http://ffmpeg.org/ffmpeg-filters.html.
Does those filters support text/face recognition? Is there some command
examples?
Thanks!
Regards
Andrew
Hi,
does ffmpeg support fdk-aac 2.0.1?
Thanks
regards
Andrew
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Hi,
I have one question about h264 svc:
Does ffmpeg h264 decoder support h264 svc stream?
Thanks!
regards
Andrew
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Hi,
I fail to decode some audio file via ffmpeg. And output is shown as below:
[aac @ 0x46c3880] Error decoding AAC frame header.
[aac @ 0x46c3880] More than one AAC RDB per ADTS frame is not implemented.
Update your FFmpeg version to the newest one from Git. If the problem still
occurs, it
Hi,
As I know, ffmpeg can do transcoding or copy for media file. how to switch
between transcoding and copy dynamicaly?
Thanks!
Regards
Andrew
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Hi,
I want to set subtitles-filter's size and position, and don't use default
setting. How to set those parameters myself?
https://trac.ffmpeg.org/wiki/HowToBurnSubtitlesIntoVideo
Thanks!
Regards
andrew
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Hi,
I change ffmpeg, where the following source code is added in avcodec.h like:
#include
And run configure with the option --extra-cflags="-I"my_dir/include"", but I
fail to build ffmpeg. Building error message is shown as follow:
In file included from
Hi,
I read one article from microsoft, i.e.
https://docs.microsoft.com/en-us/azure/media-services/media-services-specifications-live-timed-metadata
azure will put timed metadata into fmp4, and will support various formats of
timed metadata. As mpegts demuxer/muxer in ffmpeg support id3 tag,
Hi,
I have one question:
does mp4 support timed metadata, such as id3 timed metadata?
Thanks!
Regards
Andrew
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Hi,
I have one question:
For rtmp+flv, what's the difference between onMetaData and onCuePoint?
Thanks!
Regards
Andrew
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hink the function can be implemented in some self-defined bsf.
Thanks!
Regards
Andrew
At 2019-10-22 07:30:24, "Ted Park" wrote:
>
>
>> On Oct 19, 2019, at 8:39 AM, qw wrote:
>
>>
>>>>>> mpeg2 ts supports metadata and private data. How to
Hi,
As I know, flv supports amf metadata, while mpegts supports id3 timed metadata.
How can I convert amf timed metadata into id3 timed metadata? And how to
convert id3 timed metadata into amf timed metadata?
Thanks!
Regards
Andrew
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Hi,
I have a flv file, which has timed metadata tags. how to copy timed metadata as
id3 metadata from flv to mpegts?
Thanks!
Regards
Andrew
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Hi,
I have one question about data stream for mpegts/flv:
If I encoded some private data, such as metadata in PES in some private stream
in mpegts, I will send the private data at the fixed interval. Then, ffmpeg can
probe the unknown stream with unknown codec.
I use the following ffmpeg
>> mpeg2 ts supports metadata and private data. How to send some metadata in
>> mpeg2 ts periodically at some fixed interval via ffmpeg?
>
>Are you talking about timed id3 metadata?
In ISO/IEC 13818-1, 2.12 carriage of metadata gives several options for
transport of metadata. I don't know
At 2019-10-15 18:00:38, "Carl Eugen Hoyos" wrote:
>
>
>> Am 15.10.2019 um 11:14 schrieb qw :
>
>> mpeg2 ts supports metadata and private data.
>
>Please provide a sample containing the metadata you need.
>
>> How to send some metadata in mpeg2 t
Hi,
mpeg2 ts supports metadata and private data. How to send some metadata in mpeg2
ts periodically at some fixed interval via ffmpeg?
Thanks!
Regards
Andrew
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receive metadata.
>
>Can you provide a sample that shows one of these ways?
any ts file can reproduce the same result.
At 2019-10-12 07:55:48, "Carl Eugen Hoyos" wrote:
>Am Fr., 11. Okt. 2019 um 15:25 Uhr schrieb qw :
>
>> I try to insert my defined metad
Hi,
I try to insert my defined metadata into ts file using the following command:
ffmpeg -i input.ts -c copy -copyts -metadata message1="test" -f mpegts
output1.ts
If I use the following command to copy metadata from ts file to flv file, my
defined metadata doesn't exist:
ffmpeg -i
Hi,
I want to add two libx264 libs into ffmpeg, where one libx264 is original one,
and another will be changed by myself.
How to add two libx264 libs into ffmpeg without changing two much code?
Thanks!
Regards
Andrew
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Hi,
I build ffmpeg with x265 and svt-hevc. I can do transcoding via ffmpeg command.
But how to use svt-hevc in x265 via ffmpeg command?
Thanks!
Regards
Andrew
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Hi,
I make a rtmp live-stream. When there is network conjestion, ffplay would delay
av stream playing. But with real-time requirement, player should skip delayed
av streams.
How to skip delayed av streams instead of playing it later?
Thanks!
Regards
Andrew
Hi,
I have some questions about HDR 10bit/REC. 2020 color space.
Does ffmpeg+libx264 support HDR 10bit/REC. 2020 color space?
Does ffmpeg+libx265 support HDR 10bit/REC. 2020 color space?
Thanks!
Regards
Andrew
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n", profile, X265_DEPTH);
return -1;
}
I think x265 with bitdepth=10 can be used to encode yuv420.
is that right?
Thanks!
Regards
Andrew
At 2019-05-09 18:57:15, "Dennis Mungai" wrote:
>On Thu, 9 May 2019 at 13:04, qw wrote:
>
>> Hi,
>>
>
Hi,
If I build libx265 with bitdepth=10bit, and link it with ffmpeg, what's command
line to transcode video with libx265 8/10bit?
Thanks!
Regards
Andrew
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Hi,
I have one question:
what's the difference between width/height and display width/display height in
flv/rtmp metainfo?
Thanks!
Regards
Andrew
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Hi,
I try to use concat demuxer to concatenate three ts/flv files into one file.
How to set ts/flv demuxer option when concat is used?
Thanks!
Regards
Andrew
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Hi,
I'm learn how to use stream/exact_stream_id in concat demuxer. Could anyone
give me some example?
Thanks!
Regards
Andrew
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t = 1
> print("Auto restart ON")
>
>def AutoRestartOff():
> global autoRestart
> t.cancel()
> autoRestart = 0
> print("Auto restart OFF")
>
>B = tk.Button(top, text ="Cam 1 Start", command = Start1)
>B.pack()
>B = tk.Button(top, t
or relaying from my ip cameras to youtube..
>
>On Sat, Mar 30, 2019 at 12:08 PM Michael Shaffer
>wrote:
>
>> Nginx
>>
>> On Sat, Mar 30, 2019 at 12:05 PM qw wrote:
>>
>>> Hi,
>>>
>>>
>>> Is there some active pop
t;On Sat, Mar 30, 2019 at 11:49 AM qw wrote:
>
>> Hi,
>>
>>
>> does ffmpeg 4 still support ffserver?
>>
>>
>>
>> Regards
>>
>>
>> Andrew
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Hi,
does ffmpeg 4 still support ffserver?
Regards
Andrew
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Hi,
I want to know deeply about swri_resampler, and where to find its paper?
Thanks!
Regards
Andrew
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Hi,
I have one question about ffmpeg transcoding:
Does ffmpeg support changing resolution transcoding?
For example, I have one fmp4/mp4 file that consists of two part, where 1st part
is of 1280x720, and 2nd part is of 640x480. Does ffmpeg have the capacity such
that ffmpeg can transcode
ot; -f flv
football_avc_600p_24fps_1000k_output.flv
Regards
andrew
At 2019-03-13 22:21:44, "Li, Zhong" wrote:
>> From: ffmpeg-user [mailto:ffmpeg-user-boun...@ffmpeg.org] On Behalf Of
>> qw
>> Sent: Wednesday, March 13, 2019 9:57 PM
>> To: ffmpeg-user@ffmpeg.org
>> Su
hi,
I use the following command, and ffmpeg 4.0 will crash:
ffmpeg -v trace -hwaccel qsv -c:v h264_qsv -i
test-clips/football_avc_600p_24fps_1000k.flv \
-rw_timeout 1000 -acodec libfdk_aac -profile:a aac_he -ar 44100 -ac 2 -ab
64000 -c:v h264_qsv -vb 100 -r 15/1 -force_key_frames
Hi,
I build zeromq-4.2.5, and build ffmpeg with --enable-libzmq. How to build
tools/zmqsend?
Thanks
Regards
Andrew
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hi,
I have one question about fragmented mp4.
There are many ts files with different a/v encoding setting. I want to
concatenate those ts files together into one fmp4 file without retranscoding.
How to do that?
Thanks!
Regards
Andrew
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Hi,
I have encountered the following problem:
If there is one nalu with zero size, and ffmpeg converts ts into mp4 with the
option of -codec copy, then vlc can't play video stream correctly. Is there any
way to remove useless nalu, i.e. its size is 0?
Thanks!
Regards
Andrew
Hi,
I have one question about ffmpeg usage.
There are some ts files, whose start time is not zero, and even too large, such
as 1 hour. How to set start time to zero for those ts files?
Thanks!
Regards
Andrew
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s
Regards
Andrew
At 2018-08-09 08:09:46, "Reino Wijnsma" wrote:
>On 24-7-2018 08:02, qw wrote:
>> At 2018-07-23 22:43:44, "Roger Pack" wrote:
>>> Wonder if it should be
>>> or use another configure command : ./configure --disable-shared
>>
Hi,
I use the following command, which reports error:
ffmpeg -nostdin -y -hwaccel qsv -c:v h264_qsv -i src_AVC_4K.mp4 -b:a 8 -ar
44100 -c:v h264_qsv -g 300 -profile:v high -preset veryfast -c:a libfdk_aac
-max_muxing_queue_size 4000 -b:v 17418000 -movflags +faststart -strict -3
-vsync
be
>or use another configure command : ./configure --disable-shared
>--enable-static LDFLAGS="-L/usr/local/lib" LIBS="-lfreetype -lharfbuzz
> -lpng"
>
>If that doesn't work maybe the circular dep. with harfbuzz and free
>type isn't trivial?
>
>On T
Hi,
My environment is Centos 7.4.
I want to build static fontconfig and build ffmpeg with static fontconfig. I
succeed in building static libpng/freetype2/harfbuzz/vidstab/fribidi/expat, but
I fail to build static fontconfig. The following is my building steps:
1) build
Hi,
Static glibc/zlib/libstdc++ are installed as below:
yum install glibc-static zlib-static libstdc++-static
Therefore libm.a/libz.a/libpthread.a/libdl.a are installed
/usr/lib64/libm.a
/usr/lib64/libz.a
/usr/lib64/libpthread.a
/usr/lib64/libdl.a
I use the following command to configure
The reason why it fails is that, there is no static libva library.
Can I specify which static libraries are used and which dynamic libraries are
used to build ffmpeg?
Thanks!
Regards
Andrew
At 2018-07-04 22:20:07, "Moritz Barsnick" wrote:
>On Wed, Jul 04, 2018 at 20:52:29 +0
Hi,
It's inconvenient to use ffmpeg with dependent dynamic libraries. Therefore, I
want static ffmpeg instead.
Thanks!
Regards
andrew
At 2018-07-05 18:56:31, "Carl Eugen Hoyos" wrote:
>2018-07-05 11:21 GMT+02:00, qw :
>> Hi Carl Eugen,
>>
>> Thanks for
configure reported :
/bin/ld: cannot find -lva
/bin/ld: cannot find -lva-drm
Is there any way to install install libva and libva-drm libraries?
Thanks
Regards
Andrew
At 2018-07-04 22:20:07, "Moritz Barsnick" wrote:
>On Wed, Jul 04, 2018 at 20:52:29 +0800, qw wrote:
>> T
build/config.log" produced by configure as this will
help
solve the problem.
Is it possible to build static ffmpeg with the option of '--enable-libmfx'?
Thanks!
Regards
Andrew
At 2018-07-05 01:15:17, "Carl Eugen Hoyos" wrote:
>2018-07-04 12:52 GMT+02:00, qw :
>
>
Hi Moritz,
Thanks for your help.
I use CentOS 7.4 to build static ffmpeg.
Thanks!
Regards
Andrew
At 2018-07-04 19:19:57, "Moritz Barsnick" wrote:
>Hi qw,
>
>On Wed, Jul 04, 2018 at 18:52:06 +0800, qw wrote:
>> ./configure --disable-ffplay --disable-indev=snd
Hi,
I have download ffmpeg 4.0, and want to build it into one static program, i.e.
ffmpeg, without any dependent dynamic library.
I can find this kind of static ffmpeg from 'https://johnvansickle.com/ffmpeg/'.
But I fail to build static ffmpeg myself.
My steps are shown as follows:
Hi,
I have one question about building ffmpeg.
How to build ffmpeg/x264/x265/fdkaac and other external libraries into one
single ffmpeg file in linux?
Thanks!
regards
andrew
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Hi,
ocr is new in ffmpeg 4.0.
1)
I build ffmpeg 4.0 and its tesseract-3.05.01, and copy english training data to
/usr/local/share/tessdata/eng.traineddata.
I use the following command to run ocr filter in ffmpeg, but fail to find
eng.traineddata. But I have set TESSDATA_PREFIX:
ames left in the queue on closing
Conversion failed!
What's wrong with the ffmpeg command?
Thanks!
Regards
andrew
At 2018-06-19 23:30:28, "DopeLabs" wrote:
>have you searched the man page or. this page for "qsv" ?
>
>https://ffmpeg.org/ffmpeg-all
Hi,
I want to use Intel qsv encoder/decoder for ffmpeg 4.0. I use '--enable-libmfx'
to configure ffmpeg, and build it. What's ffmpeg command to use Intel qsv h.264
encoder/decoder to do transcoding?
Thanks!
Regards
Andrew
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Hi,
how to read/parse specified frame from yuv files, and save it as a separate yuv
file?
Thank!
regards
andrew
| |
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|
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在2018年06月05日 06:18，DopeLabs 写道：
i think this is what your looking for...
this will pad 0's to the left to achieve a 5 digit number
please note the level of escaping you need depends on your environment
text='%{eif\\:n+1\\:d
wangqian...@jd.com
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在2018年06月04日 15:28，Jim DeLaHunt 写道：
On 2018-06-03 20:54, qw wrote:
> Hi,
>
>
> I can use the following command to add frame number on video:
>
>
> /usr/local/bin/ffmpeg -t 180 -i input.mp4 -acodec libf
Hi,
I can use the following command to add frame number on video:
/usr/local/bin/ffmpeg -t 180 -i input.mp4 -acodec libfdk_aac -ac 2 -b:a 48k
-vcodec libx264 -b:v 500k -g 25 \
-vf "fps=fps=25, scale=w=320:h=240,
the same width of
text by adding some space at the same time?
Thanks
regards
andrew
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在2018年06月01日 22:55，Gyan Doshi 写道：
On 01-06-2018 08:10 PM, qw wrote:
> I don't find the description of print() in the vf filtergraph in ffmpeg
> websit
Hi,
I use the filter of drawtext to put some text on video images. And I want to
know the text width and height. I searched internet via google, and found one
link that shows how to print text width and height
Hi,
I use ffmpeg-3.2.10, which fail to get correct frame rate by using following
command:
ffprobe -show_format -show_streams -select_streams v wmv-file
wmv-file can downloaded from the following link:
http://www.educationalquestions.com/video/Catherine_Part1.wmv
Hi,
How to encrypt media file into hls, and decrypt ts segment files?
Thanks!
Regards
Andrew
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emuxer.
Thanks!
Regards
Andrew
At 2018-02-12 02:53:39, "Carl Eugen Hoyos" <ceffm...@gmail.com> wrote:
>2018-02-11 12:58 GMT+01:00 qw <applema...@163.com>:
>>>Not sure what you are trying to show but this file was created with
>>>FFm
he large sample files.
At 2018-02-07 18:56:26, "Carl Eugen Hoyos" <ceffm...@gmail.com> wrote:
>2018-02-07 7:03 GMT+01:00 qw <applema...@163.com>:
>
>> ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
>
>Please remember that only current FF
Hi,
I use following command to test ffmpeg-3.4.1:
ffmpeg -debug_ts -ss 10 -t 1 -i hanma.ts -f null /dev/null
ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --enable-version3 --enable-asm
Hi,
I use following command to test ffmpeg-3.4.1:
ffmpeg -debug_ts -ss 10 -t 1 -i hanma.ts -f null /dev/null
ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-4)
configuration: --enable-version3 --enable-asm
Hi,
I want to av sync of my application based on ffmpeg. Where to get av sync test
clips, include all kinds of frame rate, such as 24, 23.98, 25, 29.97, 30, 50,
59.94, 60?
Thanks!
Regards
Andrew
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Hi,
I want to get video data rate of rtmp stream via ffprobe, but which always
shows 'bit_rate=N/A'. 'videodatarate' does exist in rtmp metadata message, and
rtmpdump can get its value.
Why ffprobe doesn't get the value of 'videodatarate'?
Thanks
Regards
Andrew
Hi,
I found two filters in ffmpeg, i.e. fps and framerate, which can change frame
rate of incomming video. If original frame rate is less than target frame rate,
what I want is use original frame rate instead of target one in this case. Does
fps or framerate filter have the function? or is
Hi,
I have read the source code of movenc.c, which supports the metadata of
rotation. Does flv support 'rotation' like mov?
Thanks!
Regards
Andrew
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Hi,
I want to use ffmpeg to do the following complicated task:
I have one mp4 file with one audio and one video stream. I want to convert the
mp4 file into three encoding settings, and then save each output with one
encoding setting into 3 files.
How to do it by using single ffmpeg
Hi,
I have two questions about ffmpeg usage:
1)
How to edit metadata in flv file by using ffmpeg, such as changing some key's
value in flv file's metadata tag?
2)
Normally, there are two streams in flv files, i.e. audio and video streams. I
want to keep some part empty of in audio or video
Hi,
I have three flv files, i.e. file1.flv, file2.flv, file3.flv. I know how to
send one flv file to rtmp server, as shown below:
ffmpeg.exe -re -i file1.flv -c:v copy -c:a copy -f flv
rtmp://192.168.183.76:1935/live1/abc
But how to send file1.flv, file2.flv, and file3,flv to rtmp server
Thanks!
Regards
andrew
At 2016-11-17 20:35:23, "Moritz Barsnick" <barsn...@gmx.net> wrote:
>On Thu, Nov 17, 2016 at 20:12:19 +0800, qw wrote:
>> There are several flv file, such as file1.flv, file2.flv, and
>> file3.flv, which have different encoding settin
Hi,
I have one question about ffmpeg usage. I have one long-time flv file, i.e.
file.flv, and use the following commands to do av transcoding and send it to
rtmp server.
ffmpeg.exe -re -i file.flv -c:v copy -c:a copy -f flv
rtmp://192.168.183.76:1935/live1/abc
ffmpeg.exe -re -i file.flv
o do the transcoding
of rtmp stream.
Thanks!
At 2016-11-02 01:34:37, "Lou" <l...@lrcd.com> wrote:
>On Tue, 1 Nov 2016 13:08:40 +0800 (CST)
>qw <applema...@163.com> wrote:
>
>> Thanks for your reply. But it doesn't work.
>
>"doesn't work"
.com> wrote:
>On Mon, Oct 31, 2016, at 06:10 AM, qw wrote:
>> is there some argument that can set the timeout for opening
>> and reading input rtmp stream?
>
>Try "-timeout" as an input option. Value is in seconds.
>__
Hi,
I use ffmpeg's native rtmp plugin and the following command to do av
transcoding, which will open and read rtmp stream.
/usr/local/bin/ffmpeg -i rtmp://localhost:1935/live1/abc -timeout 2 -acodec
libfdk_aac -ac 2 -b:a 48k -vcodec libx264 -b:v 1000k -s 640x480 -g 20 -r 20.0
-f flv
Hi,
I use ffmpeg's native rtmp plugin and the following command to do av
transcoding, which will open and read rtmp stream.
/usr/local/bin/ffmpeg -i rtmp://localhost:1935/live1/abc -timeout 2 -acodec
libfdk_aac -ac 2 -b:a 48k -vcodec libx264 -b:v 1000k -s 640x480 -g 20 -r 20.0
-f flv
Hi,
Generally, ffmpeg can convert flv/mp4 files into hls format, where m3u8 is the
list file, and segment format is ts.
Is it possible that segment format is set to mp4?
Thanks!
Regards
Andrew
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Hi,
I have made one simple transcoding program by using ffmpeg lib, where several
av transcoding tasks are done in one process and each task corresponds to one
thread.
But some ffmpeg function will report error, and sometimes the multi-thread
version of transcoding program will crash
Hi,
I'm developping transcoding application based on ffmpeg lib, and evaluating the
qulaity of video/audio codec.
Where can I get HD quality 4K and 1080p clips with above 10Mbps bitrate?
Look forward to relpy!
Thanks!
Regards
Andrew
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Hi,
I found ffmpeg support two rtmp libs, where one is ffmpeg's native rtmp lib,
and the other is rtmpdump. Which is better?
Thanks!
Regards
Andrew
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Hi,
Does ffmpeg support AEC, i.e. Acoustic Echo Cancellation? Or Does ffmpeg has
third-party dependency lib that supports AEC?
Thanks!
Regards
Andrew
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Hi,
where to get special video files, i.e. interlaced video, 10bit video, and
444/422 video? Thanks!
B.R.
andrew
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Hi,
I use the following command to convert one mp4 file into one m3u8 file and
several segment ts files:
ffmpeg -y -i sourceFile.mp4 -vbsf h264_mp4toannexb -strict -3 -c:v copy -c:a
copy -f hls -hls_time 10 output.m3u8
ts file name format is output name+segment number+.ts.
How to define the
Hi,
There are various ffmpeg versions available in ffmpeg official website, such as
3.0, 2.8, 2.7, 2.6, 2.5.
which ffmpeg version began to support rtmp? Thanks!
B.R.
andrew
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Hi,
I'm using the following command to decode some rm and rmvb files, and ffmpeg
reports error as shown below:
[root@PT-18376 test-clips]# ffmpeg -i hanma.rm -xerror -f null /dev/null
ffmpeg version 2.8.3 Copyright (c) 2000-2015 the FFmpeg developers
built with icc (ICC) 14.0.2 20140120
Hi Moritz,
I'll appreciate if you can show me some sample clips with multiple video
streams, such as DVDs/Blu Rays that use it for various angles.
Thanks!
B.R.
Andrew
At 2016-05-13 16:45:49, "Moritz Barsnick" <barsn...@gmx.net> wrote:
>On Fri, May 13, 2016 at 12:02
Hi,
I know there maybe multiple audio streams in single file, because each audio
stream has different channel, quality or language.
Is it likely that there is multiple video streams in single file? I haven't
seen it before.
Thanks!
B.R.
Andrew
Hi,
I'm looking for different types of samples to develop video/audio program.
Where to get media samples with multiple tracks, such as mp4/flv/rmvb/mkv.
Thanks!
B.R.
Andrew
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Hi,
I'm using the following command to decode some rm and rmvb files, and ffmpeg
reports error as shown below:
[root@PT-18376 test-clips]# ffmpeg -i hanma.rm -xerror -f null /dev/null
ffmpeg version 2.8.3 Copyright (c) 2000-2015 the FFmpeg developers
built with icc (ICC) 14.0.2 20140120
Hi,
I use the following command to get source file's information:
ffprobe -print_format json -show_format -show_streams
sampleClips/sample_iTunes.mov
Below is the message that ffprobe ouputs:
ffprobe version 2.8.3 Copyright (c) 2007-2015 the FFmpeg developers
built with icc (ICC) 14.0.2
1, and rate to 1.
Is there other method to produce only one image?
At 2016-04-27 20:05:52, "Carl Eugen Hoyos" <ceho...@ag.or.at> wrote:
>qw 163.com> writes:
>
>> which filter is used to produce fake yuv/rgb image in ffmpeg?
>
>Are you searching
Hi
http://ffmpeg.org/ffmpeg-filters.html
I want to use some filter to produce one specified yuv/rgb image, and render
text on that image via drawtext filter later in filter graph. Then run the
filter graph, and get text_h and text_w from 'ff_vf_drawtext'. which filter is
used to produce fake
Hi,
I use the following command to do transcoding from mp4 file into hls stream:
ffmpeg -y -i input.mp4 -vbsf h264_mp4toannexb -c:v libx264 -c:a libfdk_aac -f
hls -hls_list_size 10 -hls_wrap 10 ./output.m3u8
Then ffmpeg outputs 10 ts files, but there is big different between the size of
10
Hi,
I read ffmpeg help output, and found video / audio bitstream_filters deprecated
in ffmpeg-2.8.3, shown as following:
-absf audio bitstream_filters deprecated
-vbsf video bitstream_filters deprecated
I think the latest version of ffmpeg has the same issue. How to specify audio
and
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