Re: [FFmpeg-user] Slide show with transition

On 11/18/2020 10:30 PM, RAPPAZ Francois via ffmpeg-user wrote: No, it is a very bad idea. You are certainly a supporter of that software and bad software practice in general. This can be coded with ease to be done with FFmpeg either via shell or programming. Please be careful with quoting- P

Re: [FFmpeg-user] Slide show with transition

>On Wed, Nov 18, 2020 at 6:10 PM Carl Zwanzig wrote: >> On 11/18/2020 7:55 AM, Michael Koch wrote: >> >> Size is the size in pixels or in bytes ? >> > >> > width and height >> (pixels/resolution) The byte count will vary with the image compression. >> >> Using Irfanview to process all the images i

Re: [FFmpeg-user] Fix .mp4 file with error: channel element 1.0 is not allocated

On 11/18/2020 6:59:38 PM, "Tom Worster" wrote: How can I repair a file with an error like this? [aac @ 0x5d738c0] channel element 1.0 is not allocated Instead of what you see below, the file should have, i think Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo,

[FFmpeg-user] Fix .mp4 file with error: channel element 1.0 is not allocated

How can I repair a file with an error like this? [aac @ 0x5d738c0] channel element 1.0 is not allocated Instead of what you see below, the file should have, i think Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, % ~/ffmpeg-git-20201020-amd64-static/ffp

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

> On 18 Nov 2020, at 23:29, Chris Angelico wrote: > > Appreciate the help. Still not sure how all the different filters behave. No worries, I have not read any of the code so I do not really know what manipulations are occurring under the hood. As far as I can tell, the channel split is pul

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

On Thu, Nov 19, 2020 at 10:08 AM adam smith via ffmpeg-user wrote: > > Apologies, I said LF|RF but it should be > 'channelsplit' with args 'channel_layout=7.1:channels=FL|FR’ > > "7.1" =>["FL","FR","FC","LFE","BL","BR","SL","SR"], > "7.1(wide)" =>["FL","FR","FC","LFE","BL",

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

Apologies, I said LF|RF but it should be 'channelsplit' with args 'channel_layout=7.1:channels=FL|FR’ "7.1" =>["FL","FR","FC","LFE","BL","BR","SL","SR"], "7.1(wide)" =>["FL","FR","FC","LFE","BL","BR","FLC","FRC"], "7.1(wide-side)"=>["FL","FR","FC","LFE","FLC","FRC","

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

On Thu, Nov 19, 2020 at 9:21 AM adam smith via ffmpeg-user wrote: > > > > On 18 Nov 2020, at 21:55, Chris Angelico wrote: > > > > But when I tried things along these lines, I got complaints that some > > of the outputs weren't connected to anything. > > I didn’t add the input stream as I am not s

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

> On 18 Nov 2020, at 21:55, Chris Angelico wrote: > > But when I tried things along these lines, I got complaints that some > of the outputs weren't connected to anything. I didn’t add the input stream as I am not sure what stream it is on your source. If could be something like… ffmpeg -stats

Re: [FFmpeg-user] Bitstream filter h264 metadata crop

I am testing cropping video using the bitstream filter shown in the following command: C:\ffmpeg-2020-11-18-git-e3081d6f4f-full_build\bin>ffplay.exe "Input.mp4" -codec:v copy -an -bsf:v h264_metadata=crop_top=128 "output_cropped.mp4" ffplay version 2020-11-18-git-e3081d6f4f-full_build-www.gyan.

[FFmpeg-user] u nvcc fatal : Unsupported gpu architecture 'compute_30' when installing on RTX 3080 system

Im having an issue installing on an RTX 3080 system. 0 Im follwing this guide https://docs.nvidia.com/video-technologies/video-codec-sdk/ffmpeg-with-nvidia-gpu/ to install ffmpeg on Ubunut "Ubuntu 16.04.7 LTS" with NVIDIA-SMI 455.38 I'm using Image

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

On Thu, Nov 19, 2020 at 8:48 AM adam smith via ffmpeg-user wrote: > > > > On 12 Nov 2020, at 06:10, Chris Angelico wrote: > > > > Anyone have recommendations on these options, or any other preferred > > way to remap channels at maximum quality? > > You could try using the channelsplit and selecti

Re: [FFmpeg-user] Channel manipulation and audio filter equivalencies

> On 12 Nov 2020, at 06:10, Chris Angelico wrote: > > Anyone have recommendations on these options, or any other preferred > way to remap channels at maximum quality? You could try using the channelsplit and selecting the specific channels you want and then merging them into a single stream.

Re: [FFmpeg-user] Bitstream filter h264 metadata crop

On 18-11-2020 11:58 pm, ROBINSON Stuart wrote: I am testing cropping video using the bitstream filter shown in the following command: C:\ffmpeg-2020-11-18-git-e3081d6f4f-full_build\bin>ffplay.exe "Input.mp4" -codec:v copy -an -bsf:v h264_metadata=crop_top=128 "output_cropped.mp4" ffplay ve

[FFmpeg-user] Bitstream filter h264 metadata crop

I am testing cropping video using the bitstream filter shown in the following command: C:\ffmpeg-2020-11-18-git-e3081d6f4f-full_build\bin>ffplay.exe "Input.mp4" -codec:v copy -an -bsf:v h264_metadata=crop_top=128 "output_cropped.mp4" ffplay version 2020-11-18-git-e3081d6f4f-full_build-www.gyan.

[FFmpeg-user] Output a sequence of images with known timings

Hi, I am trying to extract an image at set intervals from a video source. Later I will select one of images and will use the interval time and image number to determine the time in the video it came from. If anybody has a better idea how to do this, feel free to stop me and push me in the righ

Re: [FFmpeg-user] Slide show with transition

On 11/18/2020 9:13 AM, Paul B Mahol wrote: No, it is a very bad idea. Why? (explanation missing) You are certainly a supporter of that software and bad software practice in general. I support things that work; IrfanView works well for a great many people and for the jobs it was designed to do

Re: [FFmpeg-user] Slide show with transition

On Wed, Nov 18, 2020 at 6:10 PM Carl Zwanzig wrote: > On 11/18/2020 7:55 AM, Michael Koch wrote: > >> Size is the size in pixels or in bytes ? > > > > width and height > (pixels/resolution) The byte count will vary with the image compression. > > Using Irfanview to process all the images into a c

Re: [FFmpeg-user] Slide show with transition

On 11/18/2020 7:55 AM, Michael Koch wrote: Size is the size in pixels or in bytes ? width and height (pixels/resolution) The byte count will vary with the image compression. Using Irfanview to process all the images into a common format is a good idea. z!

Re: [FFmpeg-user] Slide show with transition

Am 18.11.2020 um 16:37 schrieb RAPPAZ Francois via ffmpeg-user: The problem is that your images 3 and 4 have different size. As far as I know, FFmpeg can't combine images with different sizes to a slideshow (please correct me if I'm >wrong). By the way, all images must also have the same pixel

Re: [FFmpeg-user] Slide show with transition

>The problem is that your images 3 and 4 have different size. As far as I know, >FFmpeg can't combine images with different sizes to a slideshow (please >correct me if I'm >wrong). By the way, all images must also have the same >pixel format. I did't check that in your images. For example, if o

Re: [FFmpeg-user] Best place for despill filter?

Am 18.11.2020 um 14:40 schrieb Moritz Barsnick: On Mon, Nov 16, 2020 at 20:15:54 +0100, Michael Koch wrote: Oh, what a pity. We need more filters with support for commands. Now that I have found out how to send zmq commands from C# code, there are so many nice things that could be done with FFmp

Re: [FFmpeg-user] Best place for despill filter?

On Mon, Nov 16, 2020 at 20:15:54 +0100, Michael Koch wrote: > Oh, what a pity. We need more filters with support for commands. Now > that I have found out how to send zmq commands from C# code, there are > so many nice things that could be done with FFmpeg in real time. > Especially when adjusting

Re: [FFmpeg-user] Slide show with transition

Am 18.11.2020 um 09:50 schrieb RAPPAZ Francois via ffmpeg-user: I have 15 JPEG file to be used for a slide (duration: 135 sec): Each image is display 9 seconds and without transition the mkv file is ok. I tried this for a transition 1 second long ffmpeg -y -framerate 1/9 -i %%02d.JPG -i SligoAi

Re: [FFmpeg-user] Slide show with transition

>> I have 15 JPEG file to be used for a slide (duration: 135 sec): Each image >> is display 9 seconds and without transition the mkv file is ok. >> I tried this for a transition 1 second long >> >> ffmpeg -y -framerate 1/9 -i %%02d.JPG -i SligoAir_WhiteBlanket.mp3 ^ >> -vf >> zoompan=d=9:fps=1,f