![]() as with the tinterlace filter above, this produces a video that is roughly twice as big as the original. I tried extracting to PNG and then re-integrating the images. transcoding that to ffv1 resulted in a 673Mb file whose bitrate and B/PI were, once again, over twice the original (94.1Mbps and 8.45 respectively). ![]() the first 60s of v210 weighed in at 1.57Gb. I tried transcoding the source file into a completely uncompressed v210+avi intermediary file, then transcoding that into ffv1. c:a copy -c:d copy -c:s copy -c:t copy \ c:v ffv1 -level 3 -threads 8 -slices 4 -slicecrc 1 -g 1 \ here is my command line: ffmpeg -hide_banner -i $input -t 60 \ The bit storage density is twice that of the source video (8.4 vs. so using tinterlace, i get a file with the following characteristics: doing a straightforward transcode of the first 60s into ffv1 doesn't work the resulting video is progressive, and one of the requirements is that interlacing be preserved.(there are also 2 audio tracks and 3 timecode tracks, not represented here.) I'm now looking at the following question: is the compression format used on the source file really that much better than ffv1, or am i missing something really fundamental? i'm inclined to think it's the latter, but by now i feel like i'm shooting in the dark. try as i might, i can't come up with a video that has a similar bitrate and pixel storage density (and similar size) even after having tried a number of different ways to do this, including using intermediary uncompressed files. i'm pretty sure this is because the video bitrate (and B/PI values, as reported by mediainfo) are twice as large as the source. The problem i'm running into is that transcoding the uncompressed j2k results in ffv1 video files with expected file sizes, but strangely, transcoding the others results in files that are even bigger than the j2k source files - almost twice as big, in fact. as the original source files are interlaced, we need to conserve the same interlacing for the transcoded files. the videos are all JPEG2000, but some are uncompressed and others are compressed. WELCOME OFFER FOR MEDIA AGENCIES: PAY FOR ONE, AND GET THE SECOND CONVERSION ABSOLUTELY FREE.I've been tasked with developing a solution using ffmpeg that will transcode archival videos into FFV1. We use Mac Compressor for conversions to provide superior quality. We'll send J2K or MPEG2 files within 24 hours. If you need to convert your ad to high-quality J2K or MPEG-2 video format, just email us and relax. Censor Certificate from CBFC (Central Board of Film Certification). ![]() Pay After Once You're Checked with Cinema Manager.Any Video Format to J2K or Mpeg2 DCP Format.Some of the cinemas support MPEG-2 digitally converted files to screen ad-film or movie on the cinema screen, We Provide any Video or Image to J2K-format/DCP or MPEG2 format as per the requirement for PVR Cinemas, Inox Cinemas, Cinepolis, SRS Cinemas, Fun Cinemas, Carnival Cinemas & other multiplexes which support J2K or MPEG-2 files for screenings. It is mainly used for screening on digital cinema screens. The J2K-codec supports the decoding of different resolution levels. So if you are planning to screen your brand ad on the digital cinema screen, then you need to convert your ad film into a j2k file. Now mostly TMS-based digital cinemas use J2K adapted files for Movie or Advertisement screening. Its first version 2.0 was released on April 12, 2011. J2K conversion file is a commercial library for decoding JPEG 2000 images. We offer Digital Cinema Conversion Services from Any Video or Image to J2K or MPEG2 Conversion (DCP Format for Cinemas). Welcome to J2K or MPEG2 Conversion Service | Video to DCP Format for Cinemas!
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |