4a5ac39749
(This commit also modifies the obs-outputs module) The first video packet video offset (the value used to set the starting point of video data) would be set to the DTS value of the first video packet. However, when b-frames are used, the first DTS value will be negative. This was originally done because FLV muxing requires that the first packet's DTS start from 0. Unfortunately, this would also effectively cause the first packet's PTS/DTS value to be shifted forward by the negative amount, which would cause video sync to be off by a video frame or two. This fixes it to start at the PTS value instead and preserve any negative offsets. Additionally, the FLV muxing code has been fixed to ensure that it adjusts the starting video DTS to 0, and now correctly adjusts the first audio packet's timestamp according to that DTS as well (which it didn't do before).
35 lines
1.4 KiB
C
35 lines
1.4 KiB
C
/******************************************************************************
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Copyright (C) 2014 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#pragma once
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#include <obs.h>
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#define MILLISECOND_DEN 1000
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static int32_t get_ms_time(struct encoder_packet *packet, int64_t val)
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{
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return (int32_t)(val * MILLISECOND_DEN / packet->timebase_den);
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}
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extern void write_file_info(FILE *file, int64_t duration_ms, int64_t size);
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extern bool flv_meta_data(obs_output_t *context, uint8_t **output, size_t *size,
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bool write_header, size_t audio_idx);
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extern void flv_packet_mux(struct encoder_packet *packet, int32_t dts_offset,
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uint8_t **output, size_t *size, bool is_header);
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