[FFmpeg-user] dpx 16bit files to ffv1 problem with the frammd5 sum

[boecki]

Hello,
I have some problems to encode a file from a dpx 16bit sequence to ffv1 and
create a proper framemd5 checksum.
The problem is like this, that the checksum from the file is different to
the checksum of the dpx frames.
My video has only 1 sec of the same pictures.

First I create the ffv1 like this:
ffmpeg -f image2 -framerate 24 -i
\\ExaSan\dpx\Testbild_16bit\testbild_%06d.dpx -vcodec ffv1 -level 3 -g 1
-slices 16 -slicecrc 1 -context 1 d:\videos\testbild_16bit.mkv

The checksum from the mkv is create as follows
ffmpeg -i d:\videos\testbild_16bit.mkv -vsync drop -f framemd5
d:\Videos\\testbild_16bit_mkv_framemd5

The checksum from the Image sequence is create as follows
ffmpeg -f image2 -framerate 24 -i
\\ExaSan\dpx\Testbild_16bit\testbild_%06d.dpx -vsync drop -f framemd5
d:\Videos\testbild_16bit_dpx_framemd5

The result of the frammd5 is as follows:
For the mkv file 
#format: frame checksums
#version: 2
#hash: MD5
#software: Lavf58.62.100
#tb 0: 1/24
#media_type 0: video
#codec_id 0: rawvideo
#dimensions 0: 2048x1536
#sar 0: 1/1
#stream#, dts,        pts, duration,     size, hash
0,          0,          0,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          1,          1,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          2,          2,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          3,          3,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          4,          4,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          5,          5,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          6,          6,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          7,          7,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          8,          8,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,          9,          9,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         10,         10,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         11,         11,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         12,         12,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         13,         13,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         14,         14,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         15,         15,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         16,         16,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         17,         17,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         18,         18,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         19,         19,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         20,         20,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         21,         21,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         22,         22,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e
0,         23,         23,        1, 18874368,
1433afb7948e09dab21fde3b3d734c7e

And for the dpx file:
#format: frame checksums
#version: 2
#hash: MD5
#software: Lavf58.62.100
#tb 0: 1/24
#media_type 0: video
#codec_id 0: rawvideo
#dimensions 0: 2048x1536
#sar 0: 0/1
#stream#, dts,        pts, duration,     size, hash
0,          0,          0,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          1,          1,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          2,          2,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          3,          3,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          4,          4,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          5,          5,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          6,          6,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          7,          7,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          8,          8,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,          9,          9,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         10,         10,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         11,         11,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         12,         12,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         13,         13,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         14,         14,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         15,         15,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         16,         16,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         17,         17,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         18,         18,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         19,         19,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         20,         20,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         21,         21,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         22,         22,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
0,         23,         23,        1, 18874368,
5c591bbd7f656cdae0e0495ae34cf830
 



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