[FFmpeg-user] XMP:XMP-dc:MOV-XMP:Subject metadata tag - write to .MP4 file - how ?
How to write XMP:XMP-dc:MOV-XMP:Subject metadata tag to a .MP4 file ? ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Am Do., 3. Nov. 2022 um 20:18 Uhr schrieb Bartosz Trzebuchowski : > 1. How can I convert 16:9 movies to 2.35:1? My projector can’t > scale down and 16:9 movies run outside my 2.35:1 canvas at > the top and the bottom. I need to black out top and bottom so > only 2.35:1 is visible. Use the crop filter: https://ffmpeg.org/ffmpeg-filters.html#crop Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Am Do., 3. Nov. 2022 um 22:49 Uhr schrieb Robin van der Linden via ffmpeg-user : > > @Carl Eugen > I check on the web for that Why didn't you test yourself? Regarding your earlier comment about TrueHD being "a proprietary format": TrueHD is based on Meridian Possless Packing, a format specified a very long time ago. FFmpeg contains a decoder for MLP / TrueHD that is known to work well, the encoder is more experimental but still usable but that was not the original question. Please find out what top-posting means and avoid it on all FFmpeg mailing lists. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Am Do., 3. Nov. 2022 um 20:18 Uhr schrieb Bartosz Trzebuchowski : > > Is is possible with ffmpeg to convert the sound to DTS 7.1? There is a DTS 5.1 encoder in FFmpeg but it is highly experimental and it is unlikely that it would really help you, use the ac3 encoder instead. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
@Carl Eugen I check on the web for that, but was not able to find any encoder/decoder for TrueHD. Can you give some more information here, I'm pretty sure it does not survive the volume per channel layout. From my understanding, if it works, it's experimental. Kind regards, Robin van der Linden Am 2022-11-03 22:35, schrieb Carl Eugen Hoyos: Am Do., 3. Nov. 2022 um 20:34 Uhr schrieb Robin van der Linden via ffmpeg-user : About the audio, I'm pretty sure that TrueHD is a BlackBox to ffmpeg FFmpeg contains a TrueHD deccoder and encoder. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". -- Grüße / Kind regards, Robin van der Linden ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Am Do., 3. Nov. 2022 um 20:34 Uhr schrieb Robin van der Linden via ffmpeg-user : > About the audio, I'm pretty sure that TrueHD is a BlackBox to ffmpeg FFmpeg contains a TrueHD deccoder and encoder. Carl Eugen ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Am 03.11.2022 um 20:17 schrieb Bartosz Trzebuchowski: Hi, I’m completely new to ffmpeg and have 2 questions: 1. How can I convert 16:9 movies to 2.35:1? My projector can’t scale down and 16:9 movies run outside my 2.35:1 canvas at the top and the bottom. I need to black out top and bottom so only 2.35:1 is visible. Have a look at the documentation for the "pad" filter. The following example might work, but I haven't tested it: ffmpeg -i input.mp4 -vf pad=x=-1:y=-1:aspect=2.35 output.mp4 Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Hello, about the first point, I have no idea, maybe somebody else has. About the audio, I'm pretty sure that TrueHD is a BlackBox to ffmpeg, same goes for Dolby Atoms. I'm not sure if you have access to a MacOS system, I personally run it inside a VM. There is a tool called "Subler" for MacOS, which can at least transform a DTS source to AC3, not sure about TrueHD and other formats, but maybe it's worth a try. But from my understanding, TrueHD is a proprietary format and will most likely also not work with Subler. Kind regards, Robin Am 2022-11-03 20:17, schrieb Bartosz Trzebuchowski: Hi, I’m completely new to ffmpeg and have 2 questions: 1. How can I convert 16:9 movies to 2.35:1? My projector can’t scale down and 16:9 movies run outside my 2.35:1 canvas at the top and the bottom. I need to black out top and bottom so only 2.35:1 is visible. 2. My old Yamaha surround can’t decode true HD. Is is possible with ffmpeg to convert the sound to DTS 7.1? Thanks Bartek ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". -- Grüße / Kind regards, Robin van der Linden ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] 16:9 to 2.35:1 and true HD 7.1 to DTS
Hi, I’m completely new to ffmpeg and have 2 questions: 1. How can I convert 16:9 movies to 2.35:1? My projector can’t scale down and 16:9 movies run outside my 2.35:1 canvas at the top and the bottom. I need to black out top and bottom so only 2.35:1 is visible. 2. My old Yamaha surround can’t decode true HD. Is is possible with ffmpeg to convert the sound to DTS 7.1? Thanks Bartek ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] V360 stabilization
Am 03.11.2022 um 10:10 schrieb Paul B Mahol: Your book is full or factual errors, Notice to anyone: do not use this thing for anything serious. Thank you for so much promotion for my book. Sure, it's likely that in more than 900 pages there are a few errors. We all make errors. If anyone finds an error, please let me know. You find my e-mail address on the first page. http://www.astro-loltronic.de/FFmpeg_Book.pdf I did not write what you quoted above. You did edit the link. It's very bad behaviour to edit what someone else has written, and make it look as if I wrote it. Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] V360 stabilization
Am 03.11.2022 um 10:10 schrieb Paul B Mahol: On 11/3/22, Michael Koch wrote: Am 03.11.2022 um 09:35 schrieb Paul B Mahol: On 10/11/20, Michael Koch wrote: Am 29.09.2020 um 22:54 schrieb Michael Koch: Hello all, I've programmed a C# workaround for stabilization of 360° videos. The procedure is as follows: 1. FFmpeg: From each frame of the equirectangular input video, extract two small images which are 90° apart in the input video. I call them A and B images. 2. C# code: Analyze the x and y image shift from subsequent A and B images. Calculate how the equirectangular frames must be rotated (yaw, pitch, roll) to compensate the image shifts. This part wasn't easy. Two rotation matrices and one matrix multiplication are required. Write the results to a *.cmd file. 3. FFmpeg: Read the *.cmd file and apply the rotations with the v360 filter. The output video is stabilized. For details and source code please have a look at chapter 2.78 in my book: http://www.astro-electronic.de/FFmpeg_Book.pdf If anyone wants to implement this in FFmpeg, please feel free to do it. I've written and tested an improved version for 360° stabilization, it's in chapter 2.79. Your book is full or factual errors, Notice to anyone: do not use this thing for anything serious. Thank you for so much promotion for my book. Sure, it's likely that in more than 900 pages there are a few errors. We all make errors. If anyone finds an error, please let me know. You find my e-mail address on the first page. http://www.astro-loltronic.de/FFmpeg_Book.pdf Some things in sea of myriad others: Why you claim that FFmpeg does not have SER format support while in fact it have support for it? You are right, it is supported now. But my first test to convert a 16-bit grayscale SER file to MP4 failed. I will provide a short sample file later. At the moment I only have SER files that are too big for uploading. Why you claim that datascope does not support >8 bit formats where in fact it does support it? Why you claim that drawbox does not support RGB formats while in fact it does support them? Perhaps these features weren't supported at the time when I wrote that, but they are supported now. All three issues are already corrected in the book and an updated version is online. Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] V360 stabilization
On 11/3/22, Michael Koch wrote: > Am 03.11.2022 um 09:35 schrieb Paul B Mahol: >> On 10/11/20, Michael Koch wrote: >>> Am 29.09.2020 um 22:54 schrieb Michael Koch: Hello all, I've programmed a C# workaround for stabilization of 360° videos. The procedure is as follows: 1. FFmpeg: From each frame of the equirectangular input video, extract two small images which are 90° apart in the input video. I call them A and B images. 2. C# code: Analyze the x and y image shift from subsequent A and B images. Calculate how the equirectangular frames must be rotated (yaw, pitch, roll) to compensate the image shifts. This part wasn't easy. Two rotation matrices and one matrix multiplication are required. Write the results to a *.cmd file. 3. FFmpeg: Read the *.cmd file and apply the rotations with the v360 filter. The output video is stabilized. For details and source code please have a look at chapter 2.78 in my book: http://www.astro-electronic.de/FFmpeg_Book.pdf If anyone wants to implement this in FFmpeg, please feel free to do it. >>> I've written and tested an improved version for 360° stabilization, it's >>> in chapter 2.79. >> Your book is full or factual errors, >> >> Notice to anyone: do not use this thing for anything serious. > > Thank you for so much promotion for my book. > Sure, it's likely that in more than 900 pages there are a few errors. We > all make errors. If anyone finds an error, please let me know. You find > my e-mail address on the first page. > > http://www.astro-loltronic.de/FFmpeg_Book.pdf Some things in sea of myriad others: Why you claim that FFmpeg does not have SER format support while in fact it have support for it? Why you claim that datascope does not support >8 bit formats where in fact it does support it? Why you claim that drawbox does not support RGB formats while in fact it does support them? I think this is enough, I could continue this forever. I could bet there is at least one and sometimes even much more factual errors on every single page of this book that mentions FFmpeg directly or indirectly. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] V360 stabilization
Am 03.11.2022 um 09:35 schrieb Paul B Mahol: On 10/11/20, Michael Koch wrote: Am 29.09.2020 um 22:54 schrieb Michael Koch: Hello all, I've programmed a C# workaround for stabilization of 360° videos. The procedure is as follows: 1. FFmpeg: From each frame of the equirectangular input video, extract two small images which are 90° apart in the input video. I call them A and B images. 2. C# code: Analyze the x and y image shift from subsequent A and B images. Calculate how the equirectangular frames must be rotated (yaw, pitch, roll) to compensate the image shifts. This part wasn't easy. Two rotation matrices and one matrix multiplication are required. Write the results to a *.cmd file. 3. FFmpeg: Read the *.cmd file and apply the rotations with the v360 filter. The output video is stabilized. For details and source code please have a look at chapter 2.78 in my book: http://www.astro-electronic.de/FFmpeg_Book.pdf If anyone wants to implement this in FFmpeg, please feel free to do it. I've written and tested an improved version for 360° stabilization, it's in chapter 2.79. Your book is full or factual errors, Notice to anyone: do not use this thing for anything serious. Thank you for so much promotion for my book. Sure, it's likely that in more than 900 pages there are a few errors. We all make errors. If anyone finds an error, please let me know. You find my e-mail address on the first page. http://www.astro-electronic.de/FFmpeg_Book.pdf Michael ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] V360 stabilization
On 10/11/20, Michael Koch wrote: > Am 29.09.2020 um 22:54 schrieb Michael Koch: >> Hello all, >> >> I've programmed a C# workaround for stabilization of 360° videos. The >> procedure is as follows: >> >> 1. FFmpeg: From each frame of the equirectangular input video, extract >> two small images which are 90° apart in the input video. I call them A >> and B images. >> >> 2. C# code: Analyze the x and y image shift from subsequent A and B >> images. Calculate how the equirectangular frames must be rotated (yaw, >> pitch, roll) to compensate the image shifts. This part wasn't easy. >> Two rotation matrices and one matrix multiplication are required. >> Write the results to a *.cmd file. >> >> 3. FFmpeg: Read the *.cmd file and apply the rotations with the v360 >> filter. The output video is stabilized. >> >> For details and source code please have a look at chapter 2.78 in my >> book: >> http://www.astro-electronic.de/FFmpeg_Book.pdf >> >> If anyone wants to implement this in FFmpeg, please feel free to do it. > > I've written and tested an improved version for 360° stabilization, it's > in chapter 2.79. Your book is full or factual errors, Notice to anyone: do not use this thing for anything serious. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
