Martin Storsjö [Fri, 21 Nov 2014 12:23:02 +0000 (14:23 +0200)]
lavc: Move the libtwolame encoder registration to the list for external libraries
This makes sure the default behaviour of using the internal encoder
stays the same regardless if libtwolame is enabled or not (as for
any external library).
This fixes fate-lavf-mpg if libav is built with libtwolame enabled.
Martin Storsjö [Tue, 18 Nov 2014 12:28:50 +0000 (14:28 +0200)]
hdsenc: Clear the previous codec tag when setting up the chained muxer
The chained flv muxer wants one set of tags - normally this set
could be signaled via the AVOutputFormat codec_tag field (as
smoothstreamingenc and dashenc do). hdsenc doesn't signal it, since
the FLV codec tag arrays aren't exported from flvenc.c. This can
lead to the caller keeping an original codec tag from the originating
container here, which would then be a mismatch for the FLV muxer.
Since we don't really care about what codec tag the caller might
have set, just clear it and let the lavf muxer layer set the right
one for the chained FLV muxer later instead.
simd_align_16 is a configure item that can be enabled or disabled,
it's not a variable containing a list of other configure items
as need_memalign previously. This was broken in eba2233b5.
CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
Martin Storsjö [Mon, 17 Nov 2014 11:31:47 +0000 (13:31 +0200)]
lavf: Only initialize s->offset once when using avoid_negative_ts make_zero
When given a stream starting at dts=0, it would previously consider
s->offset as uninitialized and set an offset when the second packet
was written, ending up writing two packets with dts=0. By initializing
this field to AV_NOPTS_VALUE, we make sure that we only initialize it
once, on the first packet.
Martin Storsjö [Tue, 21 Oct 2014 08:42:27 +0000 (11:42 +0300)]
movenc: Allow writing a DASH sidx atom at the start of files
This is mapped to the faststart flag (which in this case
perhaps should be called "shift and write index at the
start of the file"), which for fragmented files will
write a sidx index at the start.
When segmenting DASH into files, there's usually one sidx
at the start of each segment (although it's not clear to me
whether that actually is necessary). When storing all of it
in one file, the MPD doesn't necessarily need to describe
the individual segments, but the offsets of the fragments can be
fetched from one large sidx atom at the start of the file. This
allows creating files for the DASH ISO BMFF on-demand profile.
Martin Storsjö [Mon, 6 Oct 2014 08:36:17 +0000 (11:36 +0300)]
lavf: Add an MPEG-DASH ISOFF segmenting muxer
This is mostly to serve as a reference example on how to segment
the output from the mp4 muxer, capable of writing the segment
list in four different ways:
- SegmentTemplate with SegmentTimeline
- SegmentTemplate with implicit segments
- SegmentList with individual files
- SegmentList with one single file per track, and byte ranges
The muxer is able to serve live content (with optional windowing)
or create a static segmented MPD.
In advanced cases, users will probably want to do the segmenting
in their own application code.
Martin Storsjö [Mon, 3 Nov 2014 21:44:02 +0000 (23:44 +0200)]
movenc: Include empty tracks in iods when writing fragmented mp4
When writing fragmented streams with an empty initial moov,
we won't have any samples in any tracks when writing the
moov atom, thus trust that any tracks that are added actually
will be present.
Marvin Scholz [Tue, 11 Nov 2014 01:39:40 +0000 (02:39 +0100)]
Icecast: Send content-type in all cases
This is needed because Icecast since version 2.4.1 doesn't default
to audio/mpeg anymore. AVOption default not used here, since a later
check if -content_type is set is performed and would break.
Marvin Scholz [Tue, 11 Nov 2014 01:39:39 +0000 (02:39 +0100)]
Icecast: Send 100-continue header if possible
This allows for proper error reporting. Only do
this for non-legacy requests as only Icecast >2.4.0
will reply with a proper status.
Libav seems to accept both, 100 and 200 status codes, but
let's stay close to spec.
Use av_mallocz_array instead of iterating and check the returned memory.
Check returned memory and cleanly exit in case of error during the loop.
Avoid a null pointer dereference for invalid data.
Martin Storsjö [Tue, 4 Nov 2014 08:22:05 +0000 (10:22 +0200)]
libfdk-aacdec: Support building with the latest version of fdk-aac
The latest fdk-aac code drop (from android 5.0) changed the channel
layout enums (changing the value of existing enum constants), and
renamed the option for downmixing.
The failsafe comparison between ctype and FF_ARRAY_ELEMS(channel_counts)
can trigger warnings (-Wtautological-constant-out-of-range-compare)
when building with the old FDK AAC releases, where it can't be
out of range with the enum values used there.
CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
Martin Storsjö [Tue, 4 Nov 2014 14:28:48 +0000 (16:28 +0200)]
movenc: Allow to request not to use edit lists
In this case, shift tracks to start from zero instead (potentially
stretching the first sample in tracks that start later than the
first one).
Some software does not support edit lists at all, the adobe flash
player seems to be one of these. This results in AV sync errors when
edit lists are used to adjust AV sync.
Some players, such as QuickTime, don't respect the duration for
audio packets, so if an audio track starts later than the video
track and the first audio sample gets a duration longer than the
actual amount of data in it, the result will be out of sync.
lavf: Add an option for avoiding negative timestamps
This is the same logic as is invoked on AVFMT_TS_NEGATIVE,
but which can be enabled manually, or can be enabled
in muxers which only need it in certain conditions.
Also allow using the same mechanism to force streams to start
at 0.
projects / ffmpeg / log