[FFmpeg-user] Concat Dropping Video

2018-10-03 Thread VP Lists
Hi folks. I’ve created a list of small clips in random order, each with a unique filename. This file is used for a concat input file. In the verbose processing, I get lots of these after a few of the first files are processed: Error while decoding stream #0:0: Invalid data found when

Re: [FFmpeg-user] Get Hardware Buffer from FFmpeg 4.0 + VideoToolBox

2018-10-03 Thread Bo Zhou
Thank you so much ! I'd like to have a try ! On Thu, Oct 4, 2018 at 2:10 AM wrote: > I recently did just this. frame->data[3] holds a CVPixelBufferRef. Here is > some sample code in Swift: > > let pixelBuffer = >Unmanaged.fromOpaque(frame!.pointee.data.3!) > .retain() >

Re: [FFmpeg-user] Capturing the output of volumedetect as JSON

2018-10-03 Thread redneb8888
On Wed, Oct 3, 2018 at 8:36 PM Paul B Mahol wrote: > > On 10/3/18, redneb wrote: > > Hi *, > > > > ffprobe can nowadays produce JSON output, which is quite convenient > > sometimes. I am trying to use that feature in order to get the output > > of volumedetect as JSON. I tried the following:

Re: [FFmpeg-user] TXXX:CATALOGNUMBER

2018-10-03 Thread Lou Logan
On Tue, Oct 2, 2018, at 8:20 PM, yUGz afterLife wrote: > < ?php [...] > ?> We can't help with scripting on this mailing list: only unscripted usage of the FFmpeg cli tools is supported here. > And yes the -t 1 setting is a troll Incorrect. Moritz's example using a synthetic audio source as an

Re: [FFmpeg-user] I need to be able to convert audio files to video & run through an admin system on a website

2018-10-03 Thread Lou Logan
On Wed, Oct 3, 2018, at 9:56 AM, Al Vincent wrote: > Can you help, please? I need to find a way to auto convert an mp3 or wav > file to short video through the backend when someone hits a button on the > front end. And then it be linked to a share on social media. is > this possible? Can ffmpeg

[FFmpeg-user] Calculation of duplicated video frames in live stream

2018-10-03 Thread Dmitry Menshikov
Hi! I'm trying to detect duplication of video frames in live streams. Such situation occurs when encoder can't encode stream at specified fps. I see few frames with the same pkt_size. I know that there is filter to detect similar frames but such technique looks like overkill. The simplest

Re: [FFmpeg-user] Capturing the output of volumedetect as JSON

2018-10-03 Thread Paul B Mahol
On 10/3/18, redneb wrote: > Hi *, > > ffprobe can nowadays produce JSON output, which is quite convenient > sometimes. I am trying to use that feature in order to get the output > of volumedetect as JSON. I tried the following: > > ffprobe -loglevel error -of json=c=1 -show_entries root

[FFmpeg-user] Capturing the output of volumedetect as JSON

2018-10-03 Thread redneb8888
Hi *, ffprobe can nowadays produce JSON output, which is quite convenient sometimes. I am trying to use that feature in order to get the output of volumedetect as JSON. I tried the following: ffprobe -loglevel error -of json=c=1 -show_entries root -f lavfi -i

Re: [FFmpeg-user] Get Hardware Buffer from FFmpeg 4.0 + VideoToolBox

2018-10-03 Thread fumoboy007
I recently did just this. frame->data[3] holds a CVPixelBufferRef. Here is some sample code in Swift: let pixelBuffer = Unmanaged.fromOpaque(frame!.pointee.data.3!) .retain() .takeRetainedValue() In C, you would do something like: CVPixelBufferRef pixelBuffer =

Re: [FFmpeg-user] Question about conversion (Transcoding)

2018-10-03 Thread JD
On 09/18/2018 12:53 PM, Carl Eugen Hoyos wrote: 2018-09-18 18:50 GMT+02:00, JD : I have an mpeg2 file which I am trying to convert to a dvd iso. I am using dvdauthor to do it. dvdauthor says the file is not mpeg2 video compatible. When I run ffprobe on the file, I get this ffprobe

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Paul B Mahol
On 10/3/18, Michael Koch wrote: > Am 03.10.2018 um 13:23 schrieb Paul B Mahol: >> On 10/3/18, Michael Koch wrote: >>> Am 03.10.2018 um 12:28 schrieb DopeLabs: im not sure if windows has the ability to 'pipe' like a *nix system does.. but this works to pipe the output of ffmpeg to

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Michael Koch
Am 03.10.2018 um 13:23 schrieb Paul B Mahol: On 10/3/18, Michael Koch wrote: Am 03.10.2018 um 12:28 schrieb DopeLabs: im not sure if windows has the ability to 'pipe' like a *nix system does.. but this works to pipe the output of ffmpeg to ffplay instead of a file.. hope this helps...

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Paul B Mahol
On 10/3/18, Michael Koch wrote: > Am 03.10.2018 um 12:28 schrieb DopeLabs: >> im not sure if windows has the ability to 'pipe' like a *nix system does.. >> but this works to pipe the output of ffmpeg to ffplay instead of a file.. >> >> hope this helps... >> >> ffmpeg -i test_15kHz.mp3

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Michael Koch
Am 03.10.2018 um 12:28 schrieb DopeLabs: im not sure if windows has the ability to 'pipe' like a *nix system does.. but this works to pipe the output of ffmpeg to ffplay instead of a file.. hope this helps... ffmpeg -i test_15kHz.mp3 -filter_complex

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread DopeLabs
im not sure if windows has the ability to 'pipe' like a *nix system does.. but this works to pipe the output of ffmpeg to ffplay instead of a file.. hope this helps... ffmpeg -i test_15kHz.mp3 -filter_complex

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Michael Koch
oh no, I don't want to learn a new command line syntax only to solve this simple problem. I have a long ffmpeg command line that's working fine when writing the output to a file. Is there really no easy way to send the output to the speakers instead? It is very easy syntax to learn, you can

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Paul B Mahol
On 10/3/18, Michael Koch wrote: > Am 03.10.2018 um 10:43 schrieb Paul B Mahol: >> On 10/2/18, Michael Koch wrote: >>> I'm still experimenting with the ultrasonic converter. Converting from >>> one file to another file works without problems: >>> >>> C:\Users\mkoch\Desktop\Ultrasonic

Re: [FFmpeg-user] Differences between ffmpeg and ffplay

2018-10-03 Thread Paul B Mahol
On 10/2/18, Michael Koch wrote: > I'm still experimenting with the ultrasonic converter. Converting from > one file to another file works without problems: > > C:\Users\mkoch\Desktop\Ultrasonic Live>c://ffmpeg/ffmpeg -i > test_15kHz.mp3 -f la > vfi -i aevalsrc="sin(12000*2*PI*t):c=stereo:s=44100"

Re: [FFmpeg-user] ffplay RTP: dropping old packet received too late

2018-10-03 Thread Gáll Péter
Yes I tried it. It was a bit better, so it not every time gave me the error, but most of the time yes, the same error. The other problem with -f rtp_mpegts, that the first time I run ffmpeg, ffplay waits ~5secs and just then playy the stream. Alex Molon ezt írta (időpont: 2018. okt. 1., H,