Re: [FFmpeg-user] Filter to detect video glitches

Just a follow-on badly-analyzed thought-- You might be able to get some useful info by looking at the frequency distributions of a bad frame vs a good one. A frame with more detail would generally have more/higher freq's. Depends on content, of course. z!

Re: [FFmpeg-user] Filter to detect video glitches

On 3/10/2019 6:09 PM, Venkateswaran.S wrote: I'm using FFmpeg C API not the cmd util. The ffmpeg-users list is aimed at command-line users, you might try on the libav-user mailing list, it covers the libraries themselves (https://lists.ffmpeg.org/mailman/listinfo/libav-user/). how to

[FFmpeg-user] Option: segment_times does nothing?

If I do > ffmpeg -i video.avi -vcodec libx264 -map 0:0 -use_timeline 1 > -use_template 1 -hls_playlist 1 -force_key_frames ... -segment_times > ...  -f  dash playlist.mpd ffmpeg seems just to ignore -segment_times option? Is this option working? ___

Re: [FFmpeg-user] Filter to detect video glitches

On Mon, Mar 11, 2019 at 1:00 AM Carl Zwanzig wrote: (What have you already tried?) As of now, I'm passing every decoded frame to OpenCV to perform some image analysis (like dissimilarity between present and the past frame), but this method doesn't work accurately and also time-consuming.

Re: [FFmpeg-user] How to correct dark video with bright background

Am 10.03.2019 um 22:05 schrieb Michael Koch: Am 10.03.2019 um 21:33 schrieb Gerardo Ballabio: Thank you Michael -- but that means I still have to find good values of brightness, contrast, gamma, saturation and hue to use with Gimp. When I've done that, then couldn't I just apply the same values

Re: [FFmpeg-user] How to correct dark video with bright background

Am 10.03.2019 um 21:33 schrieb Gerardo Ballabio: Thank you Michael -- but that means I still have to find good values of brightness, contrast, gamma, saturation and hue to use with Gimp. When I've done that, then couldn't I just apply the same values in ffmpeg using the "eq" filter? That won't

Re: [FFmpeg-user] How to correct dark video with bright background

Thank you Michael -- but that means I still have to find good values of brightness, contrast, gamma, saturation and hue to use with Gimp. When I've done that, then couldn't I just apply the same values in ffmpeg using the "eq" filter? Or are you saying that Gimp has effects that ffmpeg doesn't

Re: [FFmpeg-user] Filter to detect video glitches

(What have you already tried?) On 3/10/2019 1:58 AM, Venkateswaran.S wrote: Glitches are video aftrifacts created by poor encoding/decoding or problem in network connection while playing online video. It can't be detected by blackdetector. Please find the attached image for your reference.

Re: [FFmpeg-user] Filter to detect video glitches

2019-03-10 10:58 GMT+01:00, Venkateswaran.S : > Please find the attached image for your reference. Didn't the decoder return an error when decoding attached image? Please avoid top-posting here, Carl Eugen ___ ffmpeg-user mailing list

Re: [FFmpeg-user] Growing file processing

> On 02 Mar 2019, at 18:39, Moritz Barsnick > wrote: > > On Sat, Mar 02, 2019 at 11:02:03 +0100, Bouke / VideoToolShed wrote: >> Next, it is dog slow, sorta kinda defeating the whole idea. > > I thought the whole point was that the "receiving" ffmpeg was too fast, > in

Re: [FFmpeg-user] Growing file processing

> On 02 Mar 2019, at 18:39, Moritz Barsnick wrote: > > On Sat, Mar 02, 2019 at 11:02:03 +0100, Bouke / VideoToolShed wrote: >> Next, it is dog slow, sorta kinda defeating the whole idea. > > I thought the whole point was that the "receiving" ffmpeg was too fast, > in relation to the processing

Re: [FFmpeg-user] Filter to detect video glitches

Am 10.03.2019 um 08:22 schrieb Venkateswaran.S: Hi all, I wants to detect glitches in my video. Is there any filter to achieve it.? How does the glitch look like? It it's black, you could try the blackdetect or blackframe filters. Michael ___