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avformat/movenc: fix channel count and samplerate fields for IAMF tracks 

Clause 6.2.3 of IAMF[1] states both of these shall be set to 0.

[1]https://aomediacodec.github.io/iamf/v1.0.0-errata.html#iasampleentry-section

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Felicia Lim 2024-07-09 15:23:43 -07:00 committed by James Almer
parent 3de65f47e0
commit 180c869faf
5 changed files with 11 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libavformat/movenc.c
View File

@ -1399,7 +1399,8 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
avio_wb16(pb, 16);
avio_wb16(pb, track->audio_vbr ? -2 : 0); /* compression ID */
} else { /* reserved for mp4/3gp */
avio_wb16(pb, track->par->ch_layout.nb_channels);
avio_wb16(pb, track->tag == MKTAG('i', 'a', 'm', 'f') ?
0 : track->par->ch_layout.nb_channels);
if (track->par->codec_id == AV_CODEC_ID_FLAC ||
track->par->codec_id == AV_CODEC_ID_ALAC) {
avio_wb16(pb, track->par->bits_per_raw_sample);
@ -1410,7 +1411,9 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
}
avio_wb16(pb, 0); /* packet size (= 0) */
if (track->par->codec_id == AV_CODEC_ID_OPUS)
if (track->tag == MKTAG('i','a','m','f'))
avio_wb16(pb, 0); /* samplerate must be 0 for IAMF */
else if (track->par->codec_id == AV_CODEC_ID_OPUS)
avio_wb16(pb, 48000);
else if (track->par->codec_id == AV_CODEC_ID_TRUEHD)
avio_wb32(pb, track->par->sample_rate);
@ -5158,7 +5161,8 @@ static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov, AVFormat
param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,
track->par->codec_id));
param_write_int(pb, "Channels", track->par->ch_layout.nb_channels);
param_write_int(pb, "SamplingRate", track->par->sample_rate);
param_write_int(pb, "SamplingRate", track->tag == MKTAG('i','a','m','f') ?
0 : track->par->sample_rate);
param_write_int(pb, "BitsPerSample", 16);
param_write_int(pb, "PacketSize", track->par->block_align ?
track->par->block_align : 4);

2
tests/ref/fate/mov-mp4-iamf-5_1_4
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@ -1,4 +1,4 @@
5585ed23481b6f28437b3707a1ed632d *tests/data/fate/mov-mp4-iamf-5_1_4.mp4
0316d0a483480ccd582fd20f06c77420 *tests/data/fate/mov-mp4-iamf-5_1_4.mp4
86340 tests/data/fate/mov-mp4-iamf-5_1_4.mp4
#extradata 0: 34, 0xafa70d5e
#extradata 1: 34, 0xafa70d5e

2
tests/ref/fate/mov-mp4-iamf-7_1_4
View File

@ -1,4 +1,4 @@
690d2b7a15b5489c59a9148fcd7975be *tests/data/fate/mov-mp4-iamf-7_1_4.mp4
d9ef5d14bbd37c5a06c1494cacdb8f29 *tests/data/fate/mov-mp4-iamf-7_1_4.mp4
100588 tests/data/fate/mov-mp4-iamf-7_1_4.mp4
#extradata 0: 34, 0xafa70d5e
#extradata 1: 34, 0xafa70d5e

2
tests/ref/fate/mov-mp4-iamf-ambisonic_1
View File

@ -1,4 +1,4 @@
2b3517591f7bf20e0f74f3ec1381af1e *tests/data/fate/mov-mp4-iamf-ambisonic_1.mp4
b0f4accdb8f1f3dfe594a6cbd6c00603 *tests/data/fate/mov-mp4-iamf-ambisonic_1.mp4
57743 tests/data/fate/mov-mp4-iamf-ambisonic_1.mp4
#extradata 0: 34, 0xad120cfe
#extradata 1: 34, 0xad120cfe

2
tests/ref/fate/mov-mp4-iamf-stereo
View File

@ -1,4 +1,4 @@
88c2b547f069f2d4a11d24f7f922251a *tests/data/fate/mov-mp4-iamf-stereo.mp4
87c17d1a9fd07e16c369d386d39c3249 *tests/data/fate/mov-mp4-iamf-stereo.mp4
15163 tests/data/fate/mov-mp4-iamf-stereo.mp4
#extradata 0: 34, 0xafa70d5e
#tb 0: 1/44100