[FFmpeg-devel] [PATCH] libavcodec/hcadec: fix header parsing after 'comp' section

[FFmpeg-devel] [PATCH] libavcodec/hcadec: fix header parsing after 'comp' section

[Pavel Roslyy]

Need to skip 2 more bytes because comp sections are 12 bytes long.
Fixes decryption since ciph_type is now being set.

Signed-off-by: Pavel Roslyy <roslypav@gmail.com>
---
 libavcodec/hcadec.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/hcadec.c b/libavcodec/hcadec.c
index feb3dce3de..7780372cf3 100644
--- a/libavcodec/hcadec.c
+++ b/libavcodec/hcadec.c
@@ -245,6 +245,7 @@ static int init_hca(AVCodecContext *avctx, const uint8_t *extradata,
         c->base_band_count     = bytestream2_get_byteu(gb);
         c->stereo_band_count   = bytestream2_get_byte (gb);
         c->bands_per_hfr_group = bytestream2_get_byte (gb);
+        bytestream2_skipu(gb, 2);
     } else if (chunk == MKBETAG('d', 'e', 'c', 0)) {
         bytestream2_skipu(gb, 2);
         bytestream2_skipu(gb, 1);
-- 
2.49.0

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Re: [FFmpeg-devel] [PATCH] libavcodec/hcadec: fix header parsing after 'comp' section

[Pavel Roslyy]

Sample file for testing:
https://streams.videolan.org/ffmpeg/incoming/encrypted-hca_lowkey-3201512.hca
Use -hca_lowkey 3201512 for decryption.
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