On Mon, Oct 21, 2024 at 07:44:47PM +0100, South East wrote: > ffmpeg has existing support for MLV raw video files; libavformat/mlvdec.c. > Since this was added, MLV has been extended to support LJ92 compressed > image data. These patches build on lossless DNG support in 7.2-dev to > enable handling LJ92 MLV via existing libavcodec/mjpegdec.c code. > > I can provide MLV sample files if desired, being raw video these tend to be > large. > > Thanks to JEEB and Lynne for help via IRC.
[...] > mjpegdec.c | 15 +++++++++------ > 1 file changed, 9 insertions(+), 6 deletions(-) > 1a3179f82c90802bb70079da08623769207f7e2a > 0001-avcodec-mjpegdec-set-bayer-flag-based-on-pix_fmt.patch > From bda19449cce6ae028ef751f0f4f21da63214ab3f Mon Sep 17 00:00:00 2001 > From: stephen-e <33672591+reticulatedpi...@users.noreply.github.com> > Date: Mon, 21 Oct 2024 16:32:01 +0100 > Subject: [PATCH 1/2] avcodec/mjpegdec: set bayer flag based on pix_fmt > > dng_decode_jpeg() does this directly in tiff.c, > this change allows signalling via the pixel format > (to support LJ92 compressed raw video in MLV containers, > which is the next commit). > --- > libavcodec/mjpegdec.c | 15 +++++++++------ > 1 file changed, 9 insertions(+), 6 deletions(-) breaks fate-vsynth1-amv --- ./tests/ref/vsynth/vsynth1-amv 2024-10-14 18:05:24.547329331 +0200 +++ tests/data/fate/vsynth1-amv 2024-10-23 16:51:21.188674970 +0200 @@ -1,4 +1,2 @@ 9e155fcedb3b853876e9ea4233971803 *tests/data/fate/vsynth1-amv.avi 1365500 tests/data/fate/vsynth1-amv.avi -e38681b9527b6d2531942f8a176a0265 *tests/data/fate/vsynth1-amv.out.rawvideo -stddev: 10.07 PSNR: 28.06 MAXDIFF: 98 bytes: 7603200/ 7603200 Test vsynth1-amv failed. Look at tests/data/fate/vsynth1-amv.err for details. make: *** [tests/Makefile:311: fate-vsynth1-amv] Error 69 thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Everything should be made as simple as possible, but not simpler. -- Albert Einstein
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