[FFmpeg-devel] JPEG2000 multiple SOC and SIZ

[Paul B Mahol]

On 6/30/19, Anton Novikov <random.plant at gmail.com> wrote:
> Hi everyone,
> I'm reversing the recent version of r3d file format, and have encountered a
> JPEG2000-related thing.
> I've got a memory dump of something that seems to be JPEG2000, and modified
> ffmpeg to consume it. The log follows:
> [r3d @ 0x558d304077c0] test
> [r3d @ 0x558d304077c0] error reading end atom
> Input #0, r3d, from '/home/anek/src/red/frame2.without0.r3d':
>   Duration: N/A, bitrate: N/A
>     Stream #0:0: Video: jpeg2000, bayer_rggb16le, 8192x4320, 24 fps, 24
> tbr, 134286336 tbn, 134286336 tbc
>     Metadata:
>       filename        : ?
> File 'frame.jpg' already exists. Overwrite ? [y/N] y
> Stream mapping:
>   Stream #0:0 -> #0:0 (jpeg2000 (native) -> mjpeg (native))
> Press [q] to stop, [?] for help
> Truncating packet of size 9496960 to 7595371
> /home/anek/src/red/frame2.without0.r3d: corrupt input packet in stream 0
> /home/anek/src/red/frame2.without0.r3d: Operation not permitted
> [jpeg2000 @ 0x558d3041c280] SIZ
> [jpeg2000 @ 0x558d3041c280] SIZ Rsiz=0x8040 2056 2168
> [jpeg2000 @ 0x558d3041c280] POC
> [jpeg2000 @ 0x558d3041c280] unsupported marker 0xFF79 at pos 0x70
> [jpeg2000 @ 0x558d3041c280] COD
> [jpeg2000 @ 0x558d3041c280] extra cblk styles E
> [jpeg2000 @ 0x558d3041c280] QCD
> [jpeg2000 @ 0x558d3041c280] SOT
>     Last message repeated 3 times
> [jpeg2000 @ 0x558d3041c280] Duplicate SOC at 3821997=0x3A51AD
> [jpeg2000 @ 0x558d3041c280] SIZ
> [jpeg2000 @ 0x558d3041c280] SIZ Rsiz=0x8040 2056 2168
> [jpeg2000 @ 0x558d3041c280] POC
> [jpeg2000 @ 0x558d3041c280] unsupported marker 0xFF79 at pos 0x3A5203
> [jpeg2000 @ 0x558d3041c280] COD
> [jpeg2000 @ 0x558d3041c280] extra cblk styles E
> [jpeg2000 @ 0x558d3041c280] QCD
> [jpeg2000 @ 0x558d3041c280] SOT
>     Last message repeated 3 times
> [jpeg2000 @ 0x558d3041c280] Progression order RPCL
>     Last message repeated 3 times
> [swscaler @ 0x558d30425900] deprecated pixel format used, make sure you did
> set range correctly
> [mjpeg @ 0x558d3040e780] removing common factors from framerate
> Output #0, image2, to 'frame.jpg':
>   Metadata:
>     encoder         : Lavf58.27.103
>     Stream #0:0: Video: mjpeg, yuvj444p(pc), 2056x2168, q=2-31, 200 kb/s,
> 24 fps, 24 tbn, 24 tbc
>     Metadata:
>       filename        : ?
>       encoder         : Lavc58.52.102 mjpeg
>     Side data:
>       cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
> [image2 @ 0x558d3040abc0] Application provided invalid, non monotonically
> increasing dts to muxer in stream 0: 101000 >= 0
> /home/anek/src/red/frame2.without0.r3d: Operation not permitted
> frame=    1 fps=0.4 q=2.9 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=
> 0x
> video:96kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
> muxing overhead: unknown
>
> picture dimensions are 8192x4320, but in JPEG2000 bytestream there are 2
> SOC and SIZ markers with SIZ mentioning 2056x2168. The image is decoded,
> but colors and area are wrong. What can I do?

Make sure it uses tiles (each jpeg2000 is special tile) and that your
packet is trimmed.