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https://github.com/FFmpeg/FFmpeg.git
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96e5e6abb9
The patch will make audio and subtitle packets be marked as AV_PKT_FLAG_KEY. For audio, it'll caused the audio sample to be sync sample. To verify ref/fate/movenc results: 1. Get the movenc test data [lmwang@vpn ffmpeg]$ libavformat/tests/movenc -w && mkdir -p audio_old && mv *.mp4 audio_old_ After applied the patch: [lmwang@vpn ffmpeg]$ make fate-movenc SAMPLES=../fate-suite [lmwang@vpn ffmpeg]$ libavformat/tests/movenc -w && mkdir -p audio_key && mv *.mp4 audio_key 2. Get l-smash and build boxdumper https://github.com/l-smash/l-smash.git 3. dump the box of crc change mp4 and diff -u [lmwang@vpn ffmpeg]$ ../l-smash/cli/boxdumper --box audio_key/non-empty-moov-no-elst.mp4 > audio_key/non-empty-moov-no-elst.log [lmwang@vpn ffmpeg]$ ../l-smash/cli/boxdumper --box audio_old/non-empty-moov-no-elst.mp4 > audio_old/non-empty-moov-no-elst.log [lmwang@vpn ffmpeg]$ diff -u audio_key/non-empty-moov-no-elst.log audio_old/non-empty-moov-no-elst.log - default_sample_flags = 0x02000000 - independent - sync sample + default_sample_flags = 0x01010000 + dependent + non-sync sample 4. have checked the change of crc are caused by default_sample_flags non-empty-moov.mp4, non-empty-moov-elst.mp4, non-empty-moov-no-elst.mp4, empty-moov.mp4, delay-moov-content.mp4, empty-moov-second-frag.mp4, empty-moov-second-frag-discont.mp4, delay-moov-second-frag-discont.mp4, delay-moov-elst-second-frag.mp4 etc 5 For subtitle, it'll effect for tests/ref/fate/binsub-movtextenc and tests/ref/fate/sub2video, that's expecting result for the subtitle is marked as keyframe. Below is the checking result of binsub-movtextenc: [lmwang@vpn ffmpeg]$ ./ffmpeg -i ../fate-suite/sub/MovText_capability_tester.mp4 -map 0 -scodec mov_text -f mp4 -flags +bitexact -fflags +bitexact -movflags frag_keyframe+empty_moov audio_key/binsub-movtextenc.mp4 [lmwang@vpn ffmpeg]$ ./ffmpeg -i ../fate-suite/sub/MovText_capability_tester.mp4 -map 0 -scodec mov_text -f mp4 -flags +bitexact -fflags +bitexact -movflags frag_keyframe+empty_moov audio_old/binsub-movtextenc.mp4 [lmwang@vpn ffmpeg]$../l-smash/cli/boxdumper audio_key/binsub-movtextenc.mp4 > audio_key/binsub-movtextenc.log [lmwang@vpn ffmpeg]$../l-smash/cli/boxdumper audio_old/binsub-movtextenc.mp4 > audio_old/binsub-movtextenc.log [lmwang@vpn ffmpeg]$ diff -u audio_key/binsub-movtextenc.log audio_old/binsub-movtextenc.log .... // the key difference is the flag for sync sample - flags = 0x000701 + flags = 0x000301 data-offset-present sample-duration-present sample-size-present - sample-flags-present sample_count = 6 - data_offset = 188 + data_offset = 164 sample[0] sample_duration = 1570000 sample_size = 21 - sample_flags = 0x02000000 - independent - sync sample - degradation_priority = 0 sample[1] sample_duration = 510000 sample_size = 2 - sample_flags = 0x01010000 - dependent - non-sync sample - degradation_priority = 0 sample[2] sample_duration = 1690000 sample_size = 9 - sample_flags = 0x02000000 - independent - sync sample - degradation_priority = 0 Suggested-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com> Suggested-by: Nicolas George <george@nsup.org> Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
187 lines
10 KiB
Plaintext
187 lines
10 KiB
Plaintext
#extradata 1: 150, 0x7c99258b
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#tb 0: 1/5
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#media_type 0: video
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#codec_id 0: rawvideo
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#dimensions 0: 720x480
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#sar 0: 0/1
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#tb 1: 1/1000000
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#media_type 1: subtitle
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#codec_id 1: dvd_subtitle
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