This field is used by compare_track when determining if the next track
should be preferred. The only problem is that we were only setting this
in compare_track which isn't used for the very first subtitle track
selection. So if the first subtitle track was a forced track that was
selected, this wasn't marked and the next subtitle track could
mistakenly be detected as preferred. Fix this by setting the field after
we set pick equal to the track in select_default track. Fixes#13804.
There's too many dumb options related to subtitles which have annoying
edge cases. Try to rewrite this completely so it hopefully behaves
normally in every expected scenario. A key goal here is be smarter while
looping through the tracks and avoid selecting the subtitle if it
doesn't meet user's passed options as opposed to clearing the pick after
the fact. Fixes#13280 and fixes#13263.
fe875083b3 confused things a bit and made
--no-subs-with-matching-audio actually mean what it says: no subtitles
if the languages match. However, the option actually meant no non-forced
subtitles not no subtitles at all. This isn't really intuitive so
instead of changing the behavior back to the old way (we already have a
release since then), add a third option "forced" which is equivalent to
the old meaning of --no-subs-with-matching audio. Fixes#13151.
e277fadd60 originally added this but it
never actually did anything in the function... wm4 probably changed his
mind but forget to delete it so just remove it here.
2c6a3cb1f2 originally added this struct
member and then 1be863afdb later added
some more logic to loadfile that uses this. There's been more changes
since then of course, but bits using playback_short and playback_start
have mostly stayed the same. It's a bit strange it's worked this way for
so long since it makes an assumption on how long files should be and
leads to weird, broken behavior on playlists with shorter videos. The
main reason for playlist_short, as far as I can tell, is to deal with
some fringe cases with short videos and trying to go back in the
playlist. More specifically, if you use --loop=inf on a very short video
(say less than 1 second) and try to go back in the playlist, you won't
be able to without any of this special logic that deals with it. But the
current approach has several side effects like going back multiple items
in the playlist instead of just one if the video is less than one
second. This is just bad so delete everything related to playlist_short
and playlist_start.
Instead, let's handle this by keeping track of playlist-prev attempts.
Going forward in the playlist doesn't require any special handling since
a bad/broken file will just advance to the next one. So it's only going
backwards that requires some special consideration. If we're going
backwards and the user isn't using force, then mark the playlist entry
with a special flag. If the file loads successfully in
play_current_file, we can just clear the flag and not worry about it.
However if there's a failure, then we set a bool telling
play_current_file that it should go back one more item in the playlist
if possible and try again. This way, we avoid the previously mentioned
--loop=inf edgecase and the user can still attempt to retry previously
failed items in the playlist (like a url or such).
Fixes#6576, fixes#12548.
The stream selection state wasn't improved. I didn't realize this messed
with caches. All in all, just not a good idea. Back to drawing board I
guess.
This reverts commit f40bbfec4f.
When seeking chapters, `last_chapter_seek` acts as a projection of
what the current chapter will be once mpv has a chance to seek to it.
This allows for more accurate results from the `chapter` property.
It works by comparing the projection to the actual current chapter
and returning the larger of the two indexes, but this only works when
seeking forward.
If we want it to work for both forward and backward chapter seeking,
we can instead use a boolean called `last_chapter_flag`, which gets
switched on when a chapter seek request is made, and then
switched off when the seek has been performed.
We should also check to ensure that we don't allow the chapter index
to be set to -1 unless there is a span of time between the very
beginning of the track and the start of the first chapter.
Since the new approach to resetting `last_chapter_seek` no longer
depends on `last_chapter_pts`, that member variable can be removed.
This replaces the previous commit and makes more sense. The internal
demux marked tracks as eager depending on their type and for subtitles
it would always lazily read them unless there happened to be no
available av stream. However, we want the sub stream to be eager if the
player is paused. The existing subtitle is still preserved on the
screen, but if the user changes tracks that's when the problem occurs.
So to handle this case, propagate the mpctx->paused down to the stream
selection logic. This modifies both demuxer_refresh_track and
demuxer_select_track to take that boolean value. A few other parts of
the player use this, but we can just assume false there (no change in
behavior from before) since they should never be related to subtitles.
The core player code is aware of its own state naturally, and can always
pass the appropriate value so go ahead and do so. When we change the
pause state, a refresh seek is done on all existing subtitle tracks to
make sure their eager state is the appropriate value (i.e. so it's not
still set to eager after a pause and a track switch). Slightly invasive
change, but it works with the existing logic instead of going around it
so ultimately it should be a better approach. We can additionally remove
the old force boolean from sub_read_packets since it is no longer
needed.
No wonder wm4 wanted to get rid of this. This option requires touching a
bunch of crap in the core player code. --stream-record works perfectly
fine and is a lot nicer so there's no need for this to exist anymore.
In the never ending quest of trying to satisfy every possible user
request for subtitle autoselection, I ended up redoing how
--subs-fallback-forced works. The old behavior had it as strictly a
fallback-type option when there were no lang matches, but now we can
make it an active part of compare_track and it works along with slang to
select the desired track. Since it's a three state option, the no option
still works to avoid selecting any forced subtitle tracks. The meaning
of always slightly changes to mean "only select forced subtitle tracks"
and yes remains essentially the same (no special priority given besides
the audio matching subtitle language case).
fbe8f99194 made it possible for mpv to
autoselect forced subtitles again (it was bugged and would ignore
without slang being specified). Unfortunately, I forgot to take slang
into account here, so it would always autoselect the subtitles if they
are available. Fix this by checking both that it matches the lang and
that the previous track pick wasn't already matched (os_langs being true
is essentially equivalent to there not being any specified slang). This
way, it still respects the order of languages in your slang list.
Probably someone out there will be upset that forced subtitles aren't
always preferred regardless of the order, but that can be another option
for later I guess.
If --slang was set to some language and it matched the subtitle track,
then --no-subs-with-matching-audio would do nothing. Fix the logic by
doing the --no-subs-with-matching-audio step at the end to ensure that
it always "wins" over whatever --slang or --subs-fallback has set.
Clarify the docs a bit to make it clearer that this is the intended
behavior. Fixes fbe8f99194.
The old name is pretty bad and users mistakenly think it has something
to do with selecting forced subtitles (that would be
--subs-fallback-forced). Instead of giving it such a generic name, make
it clearer that this has to do specifically with forced sub events
which is only relevant for a small minority of subtitles.
First of all, this never worked. Or if it ever did, it was in some
select few scenarios. c9474dc9ed is what
originally added support for the auto choice. However, that commit
worked by propagating a value to a fake option used internally. This
shouldn't have ever worked because the underlying m_config_cache was
never updated so the value shouldn't have been preserved when accessed
in sd_lavc. And indeed with some testing, the value there is always 0
unsurprisingly.
This was later rewritten in ba7cc07106
along with a lot of other sub changes, but with that, it was still
mostly broken. The reason is because one of the key parts of having to
hit this logic (prefer_forced) required `--no-subs-with-matching-audio`
to be set. If the audio language matches the subtitle language (the
requirement also excludes forced subs), the option makes no subtitle
selection in the first place so pick->forced_only_def is not set to true
and nothing even happens. Another way around this would be to attempt to
change your OS language (like with the LANG environment variable) so
that the subtitle track gets selected but then audio_matches mistakenly
becomes false because it compares the OS language to the audio language
which then make preferred_forced 0, so nothing happens. I don't think
there's a scenario where pick->forced_only_def is actually set to true
(thus meaning `auto` is useless), but maybe someone could contrive
something very strange. Regardless, it's definitely not something even
remotely common.
fbe8f99194 changed track selection again
but didn't consider this particular case. The net result is that DVD/PGS
subs become equivalent to --sub-forced-only being yes, so this a change
in behavior and probably not a good one. Note that I wasn't able to
actually observe any difference in a PGS sample. It still displayed
subtitles fine but that sample probably didn't have the right flags to
hit the sub-forced-only logic.
Anyways, the auto feature is extremely questionable at best and in my
view, not actually worth it. It is meant to be used with
`--no-subs-with-matching-audio` to display forced pictures in subtitle
tracks that are not marked as forced, but that contradicts that
particular option's purpose and description in the manual (secretly
selecting a track under certain conditions even though it says not to).
Instead of trying to shove all this logic into select_default_track
which is already insanely complicated as it is, recognize that this is a
trivial lua script. If you absolutely want to turn --sub-forced-only on
under these certain conditions (DVD/PGS subtitles, matching audio and
subtitle languages, etc.), just look at the current-tracks property and
do your thing. The very, very niche behavior that this option tried to
accomplish basically never worked, no user even knows what this option
does, and well it's just not worth supporting in core mpv code. Drop
all this code for sanity's sake and change --sub-forced-only back to a
bool.
In general, forced tracks should only be shown if they match the
language of the audio. However some people do want them no matter what,
so add an always option to this so such tracks are always selected.
This is the replacement for the previous auto option for slang. It
behaves similar however it never overrides slang if that is set and will
instead try to pick the subtitle that matches the user's language if
appropriately flagged by the file.
What was previously there is extremely complicated and really confusing.
Poorly named variables like "prefer_forced" that don't neccesarily have
anything to do with prefering forced tracks didn't help either. Try to
rewrite a few things to be saner. The idea is that after you loop
through the tracks, the special sub-specific options (like subs-fallback
and so on) should be handled and the track should be deselected if
appropriate. Another change is to remove the "prefered_forced" argument
in compare_track. This actually was both not neccessary and caused bad
behavior by always depriortizing forced tracks even when it didn't apply
(e.g. forced video tracks were never selected even though the flag
should simply be ignored for anything that's not a subtitle track).
This proved to be too problematic. Depending on the value of
--subs-with-matching-audio, you could either end up with cases where
--slang wasn't respected and users didn't get subtitles or alternatively
cases where subtitles were given and the user didn't ask for them.
Fundamentally, the OS language functionality doesn't really map well to
slang (and for alang/vlang it makes zero sense; not that anyone actually
used it). Instead of trying to shove it in an option where it doesn't
belong, we should split this off into something else. So for now, just
remove the special handling of "auto" and flip slang back to NULL.
It turns out that the code to track redirects (playlists and
directories) never worked correctly, only the last redirect is
remembered and num_redirects is never greater than 1.
You can see this by doing quit-watch-later with the old watch later
system, before dbf244fd2f, on a m3u playlist of files and a m3u playlist
of directories. Only in the first case a redirect entry for the m3u file
is created, because in the second case the m3u redirect is replaced by
the directory one.
If you did mpv --directory-mode=lazy /foo it did create redirect entries
for all subdirectories e.g. /foo/bar, /foo/bar/baz, /foo/bar/baz/qux,
this made it seem like it worked correctly, but actually
/foo/bar/bar/qux was the only redirect entry and thus it was considered
as the first redirect, and mpv created redirect entries for each segment
of the first redirect only.
In the previous commit dbf244fd2f, rather than figuring out how to fix
the code to track redirects, and since creating redirect entries for
multiple redirects is overkill, I just used the new playlist-path
property which does the same thing but only for the last redirect.
By replacing the only other use of the old redirect code with
playlist-path, we can remove it.
There are a number of ways one can craft a playlist file that refers to
itself or cleverly goes around in a loop to other playlist files. There
is obviously no use for this, but mpv spins around forever trying to
load the files so you have to just SIGTERM/SIGKILL it. We can be smarter
about this and attempt to detect it. The condition for detecting this is
surprisingly simple: the filename of the first entry in the playlist
must match a previous playlist path we stored. If we get this, we can
then log an error and stop playback. If there is a "real" file loaded at
any point in time, then we know it's not an infinite loop and clear out
the saved playlist paths. Fixes#3967.
A bit of a long standing pain with scripting is that when opening a file
that gets interpreted as a playlist (like an m3u), the original path of
the file gets thrown away later. Workarounds basically consist of
getting the filename before mpv expands the path, but that's not really
reliable. Instead of throwing it away, save the original playlist path
by copying to the playlist entries when applicable (demuxer playlist and
the playlist option). Then expose these as properties: playlist-path for
the currently playing entry and playlist/N/playlist-path for each
specific entry. Closes#8508, #7605.
When using lavfi-complex, no single track populates current_track for audio.
We work around this by iterating over the list of tracks and using the first
non-null language from a selected track. If multiple tracks are selected
(i.e. used by the filter) and have conflicting language tags, we'll ignore
them all and maintain the previous behavior (null).
6a365b258a broke deleting redirect entries for resuming playback. If you
do mpv dir1 dir2, quit-watch-later on a file in dir1, then later
quit-watch-later on a file in dir2, mpv dir1 dir2 would not resume from
dir2 because the redirect entry for dir1 is never deleted.
Fix this by deleting watch later config files for directory/playlist
entries.
Currently, mpv immediately deletes the watch_later file after an attempt
at playing the file is made. This is not really ideal because the file
may fail to load for a variety of reasons (including not even existing),
but the state is cleared anyway unconditionally. Instead, just wait
until after playback is successfully initialized before deleting it.
This way silly mistakes like forgetting to mount the drive doesn't
result in deleting your watch_later data. Fixes#3427.
in the first iteration, *out will be null and thus the steal and the
strdup both sets the parent to NULL - leaking the allocation later on
(caught via LeakSanitizer).
let append_lang() take care of setting the parent instead.
In raw OTA MPEGTS, different programs can be entirely different virtual channels.
In web streams, different programs can be different variant bitrates,
so using streams from different programs can waste large amounts of bandwidth.
c784820454 introduced a bool option type
as a replacement for the flag type, but didn't actually transition and
remove the flag type because it would have been too much mundane work.
Today, lavfi filters are provided a hw_device from the first
hwdec_interop that was loaded, regardless of whether it's the right one
or not. In most situations where a hardware based filter is used, we
need more control over the device.
In this change, a `hwdec_interop` option is added to the lavfi wrapper
filter configuration and this is used to pick the correct hw_device to
inject into the filter or graph (in the case of a graph, all filters
get the same device).
Note that this requires the use of the explicit lavfi syntax to allow
for the extra configuration.
eg:
```
mpv --vf=hwupload
```
becomes
```
mpv --vf=lavfi=[hwupload]:hwdec_interop=cuda-nvdec
```
or
```
mpv --vf=lavfi-bridge=[hwupload]:hwdec_interop=cuda-nvdec
```
