Bug: decoder error when decoding files encoded with v0.2.0.4 (10-bit and 12-bit modes)

[wonder78]

I found a decoding error when using openapv v0.2.0.4.
Files encoded with this version fail to decode properly. The issue occurs for both 10-bit and 12-bit encoding, and seems to happen when the symbol length during encoding exceeds 32.

This problem does not occur in the previous version (v0.1.13), so it appears to be a regression introduced in the latest release.

Steps to Reproduce:

1. Extract the attached ZIP file to obtain pattern_yuv444p10le_128x128.yuv.
   pattern_yuv444p10le_128x128.zip

2. Encode a YUV file using the following commands.

• 10-bit encoding:
  oapv_app_enc -i pattern_yuv444p10le_128x128.yuv -w 128 -h 128 -d 10 -z 30 --input-csp 3 --profile 444-10 -q 0 --q-matrix-c0 "4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1" -o encoded.apv
• 12-bit encoding:
  oapv_app_enc -i pattern_yuv444p10le_128x128.yuv -w 128 -h 128 -d 10 -z 30 --input-csp 3 --profile 444-12 -q 0 -o encoded.apv

3. Attempt to decode the generated encoded.apv file.

Behavior:

• When built in Release mode, decoding seems to complete, but the resulting YUV output is visibly corrupted and not displayed correctly.
• When built in Debug mode, the decoder fails with an error during decoding.

Please review and confirm whether this is a known bug or a regression in the encoding process.

[Rohith0610]

[rohit@mercury bin]$ head -n 1 ducks_take_off_444_720p50.y4m
YUV4MPEG2 W1280 H720 F50:1 Ip A1:1 C444
[rohit@mercury bin]$ ./oapv_app_enc -i ducks_take_off_444_720p50.y4m -o encodedoutduck_444p10.apv

---

/ __ ___ ___ ___ / _ | / _ \ | / / Encoder (v0.2.0.4)
/ // / _ / -) _ / __ |/ / |/ /
_/ ./_///// |// |/
//

oapv_app_enc:*/openapv-main/src/oapv.c:1036: enc_frm_prepare: Assertion `((ret) >= (0))' failed.
Aborted (core dumped)

you can see the difference

[rohit@mercury bin]$ ./oapv_app_enc -i pattern_yuv444p10le_128x128.yuv -w 128 -h 128 -d 10 -z 30 --input-csp 3 --profile 444-10 -q 0 --q-matrix-c0 "4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1" -o encoded.apv

---

/ __ ___ ___ ___ / _ | / _ \ | / / Encoder (v0.2.0.4)
/ // / _ / -) _ / __ |/ / |/ /
_/ ./_///// |// |/
//

=== Summary ====================================================================
Bitrate = 486.2400 kbps
Encoded frame count = 1
Total encoding time = 9.000 msec, 0.009 sec
Average encoding time for a frame = 9.000 msec
Average encoding speed = 111.111 frames/sec

[rohit@mercury bin]$ ./oapv_app_dec -i encoded.apv -o out128_128.yuv

---

/ __ ___ ___ ___ / _ | / _ \ | / / Decoder (v0.2.0.4)
/ // / _ / -) _ / __ |/ / |/ /
_/ ./_///// |// |/
//

oapv_app_dec:*/open_avi/openapv-main/src/oapv_vlc.c:838: oapvd_vlc_ac_coef: Assertion `scan_pos_offset == ((1 << (3)) * (1 << (3)))' failed.
Aborted (core dumped)

use only 422p10

[wonder78]

@Rohith0610
Thanks for the response. However, I don’t fully understand your point.
Are you saying that in v0.2.0.4 only 422p10 is officially supported, and 444 formats are not supported?