FFmpeg

Commit Graph

Author	SHA1	Message	Date
Marton Balint	44b2769619	avformat/pcm: decrease target audio frame per sec to 10 This makes the wav and pcm demuxer demux bigger packets, which is more efficient. As a side effect of the bigger packets, audio durations can become less exact for command lines such as "ffmpeg -i $INPUT -c:a copy -t 1.0 $OUTPUT". Signed-off-by: Marton Balint <cus@passwd.hu>	10 months ago
Marton Balint	05936403f9	avformat/wavdec: use ff_pcm_default_packet_size for the default packet size Signed-off-by: Marton Balint <cus@passwd.hu>	10 months ago
Marton Balint	3a09c2122d	avformat/wavdec: dynamically set max_size by default The wav demuxer by default tried to demux 4096-byte packets which caused packets with very few number of samples for files with high channel count. This caused a significant overhead especially since the latest ffmpeg.c threading changes. So let's use a similar approach for selecting audio frame size which is already used in the PCM demuxer, which is to read 25 times per second but at most 1024 samples. Signed-off-by: Marton Balint <cus@passwd.hu>	10 months ago
Andreas Rheinhardt	d53acf452f	avformat/matroskaenc: Don't write \0 unnecessarily Writing the duration SimpleTag is special: It's size is reserved in advance via an EBML Void element (if seekable) and this reserved space is overwritten when writing the trailer; it does not use put_ebml_string(). The string to write is created via snprintf on a buffer of size 20; this buffer is then written via put_ebml_binary() with a size of 20. EBML strings need not be zero-terminated; if not, they are implicitly terminated by the element's length field. snprintf() always zero-terminates the buffer, i.e. the last byte can be discarded when using an EBML string. This patch does this. The FATE changes are as expected: One byte saved for every track; the only exception is the matroska-qt-mode test: An additional byte is saved because an additional byte could be saved from the enclosing Tags length field. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	1 year ago
Andreas Rheinhardt	b5968df9f0	avformat/matroskaenc: Don't reserve space for HDR10+ when unnecessary Do it only for video (the only thing for type for which HDR10+ makes sense). This effectively reverts changes to several FATE ref-files made in `bda44f0f39`. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	1 year ago
James Almer	bda44f0f39	avformat/matroskaenc: support writing Dynamic HDR10+ packet side data Signed-off-by: James Almer <jamrial@gmail.com>	2 years ago
James Almer	1c2a1e0750	avformat/matroskaenc: write a MaxBlockAdditionID element A non zero value is mandatory for Matroska if the track has blocks with BlockAdditions. Signed-off-by: James Almer <jamrial@gmail.com>	2 years ago
Andreas Rheinhardt	b468ddc75d	avformat/matroskaenc: Don't waste bytes to Write Tag length fields This is possible by using a dynamic buffer to write them; said dynamic buffer is (re)used and reset as appropriate. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Anton Khirnov	9543161800	framehash: convert to new channel layout API Signed-off-by: James Almer <jamrial@gmail.com>	3 years ago
Andreas Rheinhardt	0148e85c3c	avformat/matroskaenc: Don't waste bytes on SimpleTags length fields Also check the (user-provided) tags for being overlong; the earlier code had an implicit unchecked size_t->int conversion. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago
Andreas Rheinhardt	99a4d16658	avformat/matroskaenc: Add option to shift data to write cues at front This is similar to the faststart option of the mov muxer, yet in contrast to it it works together with reserve_index_space (the equivalent to reserved_moov_size): If the reserved space does not suffice, the data is shifted; if not, the Cues are written at the front without shifting the data. Several tests that cover (not only) this have been added. Implements #7017. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	3 years ago

11 Commits (82cce209349d2a7c893a4f9691ec8698704b0486)