On Tue, Feb 22, 2022 at 12:03 PM James Almer <jamr...@gmail.com> wrote:
> > > On 2/22/2022 3:40 PM, Vignesh Venkatasubramanian wrote: > > Add an AVIF muxer by re-using the existing the mov/mp4 muxer. > > > > AVIF Specifiation: https://aomediacodec.github.io/av1-avif > > > > Sample usage for still image: > > ffmpeg -i image.png -c:v libaom-av1 -avif-image 1 image.avif > > > > Sample usage for animated AVIF image: > > ffmpeg -i video.mp4 animated.avif > > > > We can re-use any of the AV1 encoding options that will make > > sense for image encoding (like bitrate, tiles, encoding speed, > > etc). > > > > The files generated by this muxer has been verified to be valid > > AVIF files by the following: > > 1) Displays on Chrome (both still and animated images). > > 2) Displays on Firefox (only still images, firefox does not support > > animated AVIF yet). > > 3) Verfied to be valid by Compliance Warden: > > https://github.com/gpac/ComplianceWarden > > > > Fixes the encoder/muxer part of Trac Ticket #7621 > > > > Signed-off-by: Vignesh Venkatasubramanian <vigne...@google.com> > > --- > > configure | 1 + > > libavformat/allformats.c | 1 + > > libavformat/movenc.c | 300 +++++++++++++++++++++++++++++++++++---- > > libavformat/movenc.h | 5 + > > 4 files changed, 283 insertions(+), 24 deletions(-) > > > > diff --git a/configure b/configure > > index 1535dc3c5b..87b380fe3a 100755 > > --- a/configure > > +++ b/configure > > @@ -3393,6 +3393,7 @@ asf_stream_muxer_select="asf_muxer" > > av1_demuxer_select="av1_frame_merge_bsf av1_parser" > > avi_demuxer_select="riffdec exif" > > avi_muxer_select="riffenc" > > +avif_muxer_select="mov_muxer" > > caf_demuxer_select="iso_media" > > caf_muxer_select="iso_media" > > dash_muxer_select="mp4_muxer" > > diff --git a/libavformat/allformats.c b/libavformat/allformats.c > > index d066a7745b..400c17afbd 100644 > > --- a/libavformat/allformats.c > > +++ b/libavformat/allformats.c > > @@ -81,6 +81,7 @@ extern const AVOutputFormat ff_au_muxer; > > extern const AVInputFormat ff_av1_demuxer; > > extern const AVInputFormat ff_avi_demuxer; > > extern const AVOutputFormat ff_avi_muxer; > > +extern const AVOutputFormat ff_avif_muxer; > > extern const AVInputFormat ff_avisynth_demuxer; > > extern const AVOutputFormat ff_avm2_muxer; > > extern const AVInputFormat ff_avr_demuxer; > > diff --git a/libavformat/movenc.c b/libavformat/movenc.c > > index 1a746a67fd..05537d1e78 100644 > > --- a/libavformat/movenc.c > > +++ b/libavformat/movenc.c > > @@ -1303,7 +1303,7 @@ static int mov_write_av1c_tag(AVIOContext *pb, > MOVTrack *track) > > > > avio_wb32(pb, 0); > > ffio_wfourcc(pb, "av1C"); > > - ff_isom_write_av1c(pb, track->vos_data, track->vos_len, 1); > > + ff_isom_write_av1c(pb, track->vos_data, track->vos_len, track->mode > != MODE_AVIF); > > return update_size(pb, pos); > > } > > > > @@ -2004,12 +2004,13 @@ static int mov_write_colr_tag(AVIOContext *pb, > MOVTrack *track, int prefer_icc) > > } > > } > > > > - /* We should only ever be called by MOV or MP4. */ > > - av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4); > > + /* We should only ever be called for MOV, MP4 and AVIF. */ > > + av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4 || > > + track->mode == MODE_AVIF); > > > > avio_wb32(pb, 0); /* size */ > > ffio_wfourcc(pb, "colr"); > > - if (track->mode == MODE_MP4) > > + if (track->mode == MODE_MP4 || track->mode == MODE_AVIF) > > ffio_wfourcc(pb, "nclx"); > > else > > ffio_wfourcc(pb, "nclc"); > > @@ -2019,7 +2020,7 @@ static int mov_write_colr_tag(AVIOContext *pb, > MOVTrack *track, int prefer_icc) > > avio_wb16(pb, track->par->color_primaries); > > avio_wb16(pb, track->par->color_trc); > > avio_wb16(pb, track->par->color_space); > > - if (track->mode == MODE_MP4) { > > + if (track->mode == MODE_MP4 || track->mode == MODE_AVIF) { > > int full_range = track->par->color_range == AVCOL_RANGE_JPEG; > > avio_w8(pb, full_range << 7); > > } > > @@ -2103,6 +2104,8 @@ static void find_compressor(char * > compressor_name, int len, MOVTrack *track) > > av_strlcatf(compressor_name, len, " %d%c", track->par->height, > interlaced ? 'i' : 'p'); > > > > av_strlcatf(compressor_name, len, "%d", rate * (interlaced + > 1)); > > + } else if (track->par->codec_id == AV_CODEC_ID_AV1 && track->mode > == MODE_AVIF) { > > + av_strlcatf(compressor_name, len, "libaom Encoder"); > libaom is not the only AV1 encoder supported by libavcodec, a > libavformat user could even not use a libavcodec based encoder to begin > with, and then there's also the codec copy scenario where no encoder is > used at all. > > This should probably use the same path as MODE_MOV above if there's a > key "encoder" in track->st->metadata, and write it. > Done. > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-devel > > To unsubscribe, visit link above, or email > ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe". > -- Vignesh _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
