> On 15 May 2025, at 13:56, BloodMan <blood...@gmail.com> wrote: > > Hello, > > Everything indicates that: > > 1. The real, stored, image resolution is 702x576 (702/3/4? weird) > > 2. The display resolution is set to 720x576 > > 3. Additionally, there is information about the image positioning offset > 702x576 in 720x576 resolution (in MOV headers) > > So: > > There is no possibility of obtaining a 720x576 result image because there is > no such thing in the file - and the only possibility is to use the rescale OR > overlay filter to place 702x576 at 720x576 black; > and reencode. > > > greets,
If this is the case, it’s an FFmpeg bug to ‘bake in’ what should only be metadata. I can add CLAP altering support to QTchange if needed. A simple operation then would change or remove aperture info. Bouke > > > W dniu 2025-05-15 o 13:24, Christian Sievers via ffmpeg-user pisze: >> Hello, >> It looks a lot like the file is actually cropped. At least, I can’t find a >> player or tool that tells me that the 720 px are still there. See the bottom >> for mediainfo and exiftool reports for the FFV1 file. >> Yes, the strange thing is, I did run frameMD5 checks on original and >> resulting copy, and ffmpeg tells me they’re identical. Does that mean that >> ffmpeg calculates the MD5s from the clean aperture value frames; ignoring >> the video content outside? >> I may be wrong (hey, sounds more likely than the option that I just noticed >> something strange that nobody else has), but to me it does look like ffmpeg >> is deleting info without telling me. >> Here’s another sample file, with the original v210 video track. It's 4 >> seconds long and 55 MB in size. https://videolooper.de/1913_trim.mov >> At this point, this is about to turn into an academic question, because we >> might just keep our v210 files for now. But I’m happy to assist where I can, >> if anyone thinks this is something that needs to be fixed in ffmpeg. >> Best, >> Christian > > > -- > Pozdrawiam, > blood...@gmail.com > _______________________________________________ > 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 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".
