Given that leading_zero_8bits can be included many times at the beginning of a NAL unit, blindly taking the startcode as 3 bytes will leave 0x00 in last frame.
When startcode is found, go back to find all leading_zero_8bits in current buffer and pc->buffer to cut correctly. Update the FATE checksum for fate-hevc-bsf-mp4toannexb: The ref output has redundant 0x00 at the end of the SUFFIX_SEI: { 50 01 84 31 00 19 39 77 d0 7b 3f bd 1e 09 38 9a 79 41 c0 16 11 da 18 aa 0a db 2b 19 fa 47 3f 0f 67 4a 91 9c a1 12 72 67 d6 f0 8f 66 ee 95 f9 e2 b9 ba 23 9a e8 80 00 } To verify the output of FATE: ffmpeg -i hevc-conformance/WPP_A_ericsson_MAIN10_2.bit -c copy -flags \ +bitexact hevc-mp4.mov ffmpeg -i hevc-mp4.mov -c:v copy -fflags +bitexact -f hevc hevc.out Signed-off-by: Linjie Fu <linjie...@intel.com> --- [v2]: Update FATE checksum. [v3]: Cope with more leading_zero_8bits cases. [v4]: find leading_zero_8bits in pc->buffer to cut correctly. libavcodec/hevc_parser.c | 12 ++++++++---- tests/fate/hevc.mak | 2 +- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/libavcodec/hevc_parser.c b/libavcodec/hevc_parser.c index 369d1338d0..f6df43a067 100644 --- a/libavcodec/hevc_parser.c +++ b/libavcodec/hevc_parser.c @@ -267,8 +267,7 @@ static int hevc_find_frame_end(AVCodecParserContext *s, const uint8_t *buf, if ((nut >= HEVC_NAL_VPS && nut <= HEVC_NAL_EOB_NUT) || nut == HEVC_NAL_SEI_PREFIX || (nut >= 41 && nut <= 44) || (nut >= 48 && nut <= 55)) { if (pc->frame_start_found) { - pc->frame_start_found = 0; - return i - 5; + goto found; } } else if (nut <= HEVC_NAL_RASL_R || (nut >= HEVC_NAL_BLA_W_LP && nut <= HEVC_NAL_CRA_NUT)) { @@ -277,14 +276,19 @@ static int hevc_find_frame_end(AVCodecParserContext *s, const uint8_t *buf, if (!pc->frame_start_found) { pc->frame_start_found = 1; } else { // First slice of next frame found - pc->frame_start_found = 0; - return i - 5; + goto found; } } } } return END_NOT_FOUND; + +found: + pc->frame_start_found = 0; + while (i - 6 >= 0 ? !buf[i - 6] : !pc->buffer[pc->index + i - 6]) + i--; + return i - 5; } static int hevc_parse(AVCodecParserContext *s, AVCodecContext *avctx, diff --git a/tests/fate/hevc.mak b/tests/fate/hevc.mak index db3ea19340..ab8da53535 100644 --- a/tests/fate/hevc.mak +++ b/tests/fate/hevc.mak @@ -238,7 +238,7 @@ FATE_HEVC-$(call ALLYES, HEVC_DEMUXER MOV_DEMUXER HEVC_MP4TOANNEXB_BSF MOV_MUXER fate-hevc-bsf-mp4toannexb: tests/data/hevc-mp4.mov fate-hevc-bsf-mp4toannexb: CMD = md5 -i $(TARGET_PATH)/tests/data/hevc-mp4.mov -c:v copy -fflags +bitexact -f hevc fate-hevc-bsf-mp4toannexb: CMP = oneline -fate-hevc-bsf-mp4toannexb: REF = 1873662a3af1848c37e4eb25722c8df9 +fate-hevc-bsf-mp4toannexb: REF = 73019329ed7f81c24f9af67c34c640c0 fate-hevc-skiploopfilter: CMD = framemd5 -skip_loop_filter nokey -i $(TARGET_SAMPLES)/hevc-conformance/SAO_D_Samsung_5.bit -sws_flags bitexact FATE_HEVC += fate-hevc-skiploopfilter -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel