On 1/8/18, Carl Eugen Hoyos wrote:
> 2017-10-23 7:03 GMT+02:00 Frank @ Taapo :
>
>> ffmpeg.exe -i temp_music.aif -i temp_voice.aif -filter_complex
>> "[1:a]asplit=2[sc][mix];[0:a][sc]sidechaincompress=threshold=0.1:ratio=5[bg];
>
>> [bg][mix]amerge[fin*al]" -map [final] final.mp3
>
> The letter "n
Hello, ffmpeg'rs:
I'm trying to overlay animated GIFS onto one white background, with some
text at the top. I'm looking for an incantation which a) does the job
and b) leaves all the colours of the animated gifs unchanged.
What options tell ffmpeg not to mess with the colour values, not to
2018-01-08 4:03 GMT+01:00 Swami Kevala :
> We write large HD video files (MXF) to LTO tape. We want to develop a
> solution where we can restore a subclip alone from the tape. (This is
> commonly referred to as PFR - partial file restore)
(I wonder if mxf is the original format that you received
Hi,
We write large HD video files (MXF) to LTO tape. We want to develop a
solution where we can restore a subclip alone from the tape. (This is
commonly referred to as PFR - partial file restore)
I understand the -ss and -t options can be used to cut out a subclip - but
this is only when the enti
2018-01-08 1:40 GMT+01:00 Carl Eugen Hoyos :
> 2018-01-08 1:33 GMT+01:00 Jim DeLaHunt :
>> On 2018-01-07 16:24, Carl Eugen Hoyos wrote:
>>>
>>> 2018-01-08 1:12 GMT+01:00 Jim DeLaHunt :
On 2018-01-07 15:20, Carl Eugen Hoyos wrote:
>
> ...[snip]...
> I hope this helps, I will cl
The outputs of the encoder is mpeg-2 and is encoded to h.264. Running
ffprobe on the encoder output we have:
Input #0, mpegts, from 'udp://@224.2.2.2:1005':
Duration: N/A, start: 5006.384056, bitrate: 5256 kb/s
Program 1025
Metadata:
service_name: DTV4
service_provider:
2018-01-08 1:33 GMT+01:00 Jim DeLaHunt :
> On 2018-01-07 16:24, Carl Eugen Hoyos wrote:
>>
>> 2018-01-08 1:12 GMT+01:00 Jim DeLaHunt :
>>>
>>> On 2018-01-07 15:20, Carl Eugen Hoyos wrote:
...[snip]...
I hope this helps, I will close your ticket
(and try to explain there).
>>
>>
>> So what I want is:
>>Turn off the autorotation for files with
>>rotation flag
It's been a long time since ffmpeg automatically applies display_matrix
side data to the video stream. Have you tried -noautorotate option in your
script?
Thank you,
Davood Falahati
___
On 2018-01-07 16:24, Carl Eugen Hoyos wrote:
2018-01-08 1:12 GMT+01:00 Jim DeLaHunt :
On 2018-01-07 15:20, Carl Eugen Hoyos wrote:
...[snip]...
I hope this helps, I will close your ticket
(and try to explain there).
Sorry, this was apparently misleading: I am happy to try to explain
the misund
2018-01-08 1:12 GMT+01:00 Jim DeLaHunt :
> On 2018-01-07 15:20, Carl Eugen Hoyos wrote:
>>
>> ...[snip]...
>> I hope this helps, I will close your ticket
>> (and try to explain there).
Sorry, this was apparently misleading: I am happy to try to explain
the misunderstandings about formats and FFmp
2017-10-23 7:03 GMT+02:00 Frank @ Taapo :
> ffmpeg.exe -i temp_music.aif -i temp_voice.aif -filter_complex
> "[1:a]asplit=2[sc][mix];[0:a][sc]sidechaincompress=threshold=0.1:ratio=5[bg];
> [bg][mix]amerge[final]" -map [final] final.mp3
The letter "n" in the name of the output pad is another le
On 2018-01-07 13:29, Moritz Barsnick wrote:
On Sun, Jan 07, 2018 at 12:55:20 -0800, Jim DeLaHunt wrote:
Harrumph. "Just try it first" is practical advice for this project, it
seems.
LOL. I was just referring to doubts regarding the documentation. OTOH,
some details are not or cannot be explaine
On 2018-01-07 15:20, Carl Eugen Hoyos wrote:
...[snip]...
I hope this helps, I will close your ticket (and try to explain there).
This response shows one of the reasons why the ffmpeg project has poor
documentation. This ticket[1] points out deficiencies in the
documentation. The developer's
2018-01-08 0:37 GMT+01:00 Andrey Goreev :
> I have 1920x1080 videos with rotation flag 90. After I use this command:
>
> ffmpeg -hide_banner -loglevel "${loglevel}" -y -i "${f}" -f mp4 -c:a "${ca}"
> -b:a "${ba}" -c:v "${cv}" -crf "${crf}" -preset "${preset}" -map_metadata 0
> "${f%.*}_${suffix}
Hello,
I have 1920x1080 videos with rotation flag 90. After I use this command:
ffmpeg -hide_banner -loglevel "${loglevel}" -y -i "${f}" -f mp4 -c:a "${ca}"
-b:a "${ba}" -c:v "${cv}" -crf "${crf}" -preset "${preset}" -map_metadata 0
"${f%.*}_${suffix}.mp4"
where:
cv="libx264"
crf="23"
preset=
2018-01-07 8:02 GMT+01:00 Jim DeLaHunt :
> % ffmpeg -f image2 -i blue_%d.gif
This did work in the past but at the same time, most gif files
were not supported at all so it is very unlikely that current
behaviour will change in the future (work-arounds are trivial
depending on what your gif files
2018-01-07 8:08 GMT+01:00 Jim DeLaHunt :
> I'm reading the documentation for the image2 demuxer[1]. It has three
> examples, in section 20.9.1 Examples.
>
> ffmpeg -framerate 10 -i 'img-%03d.jpeg' out.mkv
> ffmpeg -framerate 10 -start_number 100 -i 'img-%03d.jpeg' out.mkv
> ffmpeg -framerate 10 -p
On Sun, Jan 07, 2018 at 12:55:20 -0800, Jim DeLaHunt wrote:
> Harrumph. "Just try it first" is practical advice for this project, it
> seems.
LOL. I was just referring to doubts regarding the documentation. OTOH,
some details are not or cannot be explained, so when a user poses a
complicated "how
On 2018-01-07 11:01, Moritz Barsnick wrote:
On Sat, Jan 06, 2018 at 23:08:32 -0800, Jim DeLaHunt wrote:
ffmpeg -framerate 10 -i 'img-%03d.jpeg' out.mkv
ffmpeg -framerate 10 -start_number 100 -i 'img-%03d.jpeg' out.mkv
ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv
Those examples la
On 2018-01-07 00:16, Gyan Doshi wrote:
GIFs have a dedicated demuxer and don't work via the image2 demuxer.
Thank you for your reply, Gyan.
Oh wow, this seems like a pretty significant limitation on the image2
demuxer, and a deficiency in the documentation that this isn't
mentioned. I've f
On 1/8/2018 12:31 AM, Moritz Barsnick wrote:
I *believe* the detail that is missed in the documentation is that the
use of a pattern "implies" the image2 demuxer (or muxer, if used as
output). Apparently with such a high priority that I can't even open a
single image named "%03d.jpg" without the
On Sun, Jan 07, 2018 at 10:16:55 -0800, Jim DeLaHunt wrote:
> And the term "demuxer" may be complicating things. The documentation for
> `image2` describes it as a "demuxer"[1]. But elsewhere, I think the
> FFmpeg documentation describes the operation of extracting multiple
> still frames from a
On Sat, Jan 06, 2018 at 23:08:32 -0800, Jim DeLaHunt wrote:
> ffmpeg -framerate 10 -i 'img-%03d.jpeg' out.mkv
> ffmpeg -framerate 10 -start_number 100 -i 'img-%03d.jpeg' out.mkv
> ffmpeg -framerate 10 -pattern_type glob -i "*.png" out.mkv
>
> Those examples lack a `-f image2` option. I would expec
On 2018-01-07 00:48, Gyan Doshi wrote:
On 1/7/2018 12:38 PM, Jim DeLaHunt wrote:
Those examples lack a `-f image2` option. I would expect that option
to be there; after all, isn't the image2 format exactly what this
section is trying to explain?
FFmpeg probes the input to determine its form
On 10/23/17, Frank @ Taapo wrote:
> I have been trying to get sidechaining to work with FFMPEG, but my complex
> filter skills are lacking.
>
> I'm running two aif files into ffmpeg, hoping the voice would "duck" the
> background music when the voice-over is speaking. But I get an error with
> thi
On 1/7/2018 12:38 PM, Jim DeLaHunt wrote:
Those examples lack a `-f image2` option. I would expect that option to
be there; after all, isn't the image2 format exactly what this section
is trying to explain?
FFmpeg probes the input to determine its format. Adding the `-f` option
for an input
GIFs have a dedicated demuxer and don't work via the image2 demuxer.
Try the concat demuxer, or ingest the two GIFs separately and use the
concat filter.
Regards,
Gyan
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