Am Di., 15. Sept. 2020 um 11:47 Uhr schrieb Rainer M Krug <[email protected]>: > > Hi > > I want to compress avi videos which will be read into ImageJ, which supports > the following formats: > > https://imagej.nih.gov/ij/plugins/avi-reader.html > > ``` > • Only a few formats are supported: > • Uncompressed 8 bit with palette (LUT) > • Uncompressed 8 & 16 bit grayscale > • Uncompressed 24 & 32 bit RGB (alpha channel ignored) > • Uncompressed 32 bit AYUV (alpha channel ignored) > • Various YUV 4:2:2 compressed formats > • PNG or JPEG-encoded individual frames. > • MJPG (motion-JPEG) > • Does not read AVI formats with more than one frame per chunk > • Palette changes during the video not supported > • Out-of-sequence frames (sequence given by index) not supported > • Different frame sizes in one file (rcFrame) not supported > • Conversion of (A)YUV formats to grayscale is non-standard: > All 255 levels are kept as in the input (i.e. the full dynamic range of data > from a frame grabber is preserved). For standard behavior, use > "Brightness&Contrast", Press "Set", enter "Min." 16, "Max." 235, and press > "Apply”. > ``` > > I tried the following > > > ``` > ffmpeg -i 20200728_00019.avi -vcodec png 20200728_00019.comp.avi > ```
When asking questions on this mailing list, please don't forget to always provide the command line you tested together with the complete, uncut console output. > But this gives me an error in ImageJ: "Unsupported compression: 474e504d > 'MPNG' in line 16” ffmpeg -i input -vcodec png -vtag "PNG " out.avi Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
