Hi,This is my first post to ffmpeg, please advise if I misplaced this issue.I
have been using ffmpeg for many years and now have an issue with the latest
version:ffmpeg-20180731-481741e-win64-static
When transcoding a VOB, ntsc-dvd, I get "buffer underflow" errors. This is
especially true
If anyone is interested, I figured out how to fix my problem. Since I
already had to compile ffmpeg, I just modifed the source code to the
curves filter.
Basically, I compute the saturation and value for each pixel, and only
apply the curve if the saturation and value are low enough... It
Yes, if I SIGKILL, I can take over the stream from another server.
So, it's not really essential. Having control over the netstream command
seemed more elegant to me, but if its not possible, SIGKILL will do.
Thanks Carl!
On Wed, Aug 1, 2018 at 2:21 PM, Carl Eugen Hoyos wrote:
> 2018-08-01
Hi all,
I am processing some video and would love help with the curves filter. The
video is shot with a 'black' background, but it is not completely black
(notice folds in the backdrop). I want to filter the video to make the
background completely black without affecting any of the rest of
2018-07-27 10:23 GMT+02:00, qw :
> 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
2018-08-01 17:10 GMT+02:00, bob johnson :
> Hello!
>
> When I use ffmpeg to send an rtmp to stream to various platforms, it works
> great. However, when the source stream ends it seems like ffmpeg
> automatically sends the deleteStream netstream command referenced here
>
2018-08-01 21:24 GMT+02:00, Kirk Liberty :
> On Wed, Aug 1, 2018 at 2:00 PM, Carl Eugen Hoyos wrote:
>> 2018-08-01 6:12 GMT+02:00, Kirk Liberty :
>>> On Tue, Jul 31, 2018 at 7:04 PM, Carl Eugen Hoyos
>>> wrote:
2018-07-29 0:16 GMT+02:00, Kirk Liberty :
> My plan is to use the
On 02-08-2018 01:15 AM, Michael Koch wrote:
Related question:
Is it possible to give ffmpeg a video as input, and get the last frame
of this video as output?
Yes, using something like
ffmpeg -sseof -0.2 -i input -q:v 1 -update 1 out.jpg
For holding last frame, see
Repeat the first frame of a video 100 times (with the same framerate as
the video), then copy the video, then repeat the last frame 100 times?
If you mean to copy video without generally losing quality than
answer is no.
Otherwise you can use loop video filter.
The loop video filter
On Wed, Aug 1, 2018 at 2:00 PM, Carl Eugen Hoyos wrote:
> 2018-08-01 6:12 GMT+02:00, Kirk Liberty :
>> On Tue, Jul 31, 2018 at 7:04 PM, Carl Eugen Hoyos
>> wrote:
>>>
>>> 2018-07-29 0:16 GMT+02:00, Kirk Liberty :
>>> > My plan is to use the YCgCo
>>> > colorspace to get lossless conversion of
Repeat the first frame of a video 100 times (with the same framerate as
the video), then copy the video, then repeat the last frame 100 times?
If you mean to copy video without generally losing quality than answer is no.
Otherwise you can use loop video filter.
The loop video filter
On 8/1/18, Michael Koch wrote:
> Hi,
>
> is it possible to do the following with ffmpeg?
>
> Repeat the first frame of a video 100 times (with the same framerate as
> the video), then copy the video, then repeat the last frame 100 times?
If you mean to copy video without generally losing quality
Hi,
is it possible to do the following with ffmpeg?
Repeat the first frame of a video 100 times (with the same framerate as
the video), then copy the video, then repeat the last frame 100 times?
Thanks,
Michael
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2018-08-01 17:35 GMT+02:00, juan carlos rebate :
> How could I edit video without reconverting this video? For example,
> add a watermark
This is (generally) impossible and not related to FFmpeg.
Carl Eugen
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2018-08-01 6:12 GMT+02:00, Kirk Liberty :
> On Tue, Jul 31, 2018 at 7:04 PM, Carl Eugen Hoyos
> wrote:
>>
>> 2018-07-29 0:16 GMT+02:00, Kirk Liberty :
>> > My plan is to use the YCgCo
>> > colorspace to get lossless conversion of rgb->yuv->rgb
>>
>> This conversion (may be lossless in theory but)
2018-08-01 19:16 GMT+02:00, Edilson :
> So, as the subject describes, FFPROBE analysis reports thatall I-Frames in a
> TS file are keyframes.
>
> Running the same analysis on a professional MPEG-TS file analyzer,it shows
> that the keyframes are in the interval of 2s, just as configured onthe
>
I figured out how to do this. The problem was just that I forgot to put the
-map 0:0 -map 1:0, etc. arguments in these commands. So ffmpeg was only
selecting the first stream in the input.
> On Aug 1, 2018, at 12:03 PM, Ronak wrote:
>
> Hi all,
>
> I'd like to generate an MPEG DASH stream
So, as the subject describes, FFPROBE analysis reports thatall I-Frames in a TS
file are keyframes.
Running the same analysis on a professional MPEG-TS file analyzer,it shows that
the keyframes are in the interval of 2s, just as configured onthe encoder, and
the rest of the frames are regular
Hi all,
I'd like to generate an MPEG DASH stream that would include all of the
Representations/AdaptationSets inside of my mp4. I've mapped 5 separate audio
streams into my input mp4.
However, no matter what I do with the command line arguments, I'm always only
getting one Adaptation Set.
Am 01.08.2018 um 17:35 schrieb juan carlos rebate:
> How could I edit video without reconverting this video? For example, add a
> watermark, or delete a frame and that the format and quality do not change.
> The commands -c copy or -vcodec and -acodec copy does not have the desired
> effect,
How could I edit video without reconverting this video? For example, add a
watermark, or delete a frame and that the format and quality do not change.
The commands -c copy or -vcodec and -acodec copy does not have the desired
effect, although these commands supposedly are for that the result is
Hello!
When I use ffmpeg to send an rtmp to stream to various platforms, it works
great. However, when the source stream ends it seems like ffmpeg
automatically sends the deleteStream netstream command referenced here
On 7/31/18, Joshua Grauman wrote:
> Hello all,
>
> I am using ffmpeg to edit videos of speeches/talks (like a TED talk). I am
> using a headworn microphone. I would like to add an audio filter to get
> rid of 'pop' and 'ess' sounds, especially present when pronouncing the 'p'
> sound and 's' and
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