i noticed that avplayer hd is back on the store.
i know people used to consider it the best, but i can't find a review of this newly appeared version.
I've just posted one, very long and detailed one to
https://forums.macrumors.com/showthread.php?p=16551960
I don't paste any part of it here as it's VERY long and couldn't find any part of it that has the same information content as the entire article (except for the first paragraph maybe. But, then, I'd have to copy almost the entire article).
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The audio / subtitle track switching is indeed very much messed up in both AVPlayerHD and its dumbed-down little brother, ProPlayer.
1, tap the Tool icon in the top right corner
2, tap the now-displayed Arrow icon on the far right of your video
3, tap the Tool icon in the audio row (the third one)
4, select your audio stream
In the just-mentioned article, I've posted this as a complete tutorial. Let me paste it here:
1.2 Selecting audio and (embedded) subtitle tracks
Unfortunately, selecting AVPlayer's active audio and embedded subtitle track is far from being intuitive. I'm too always being asked about how this needs to be done (an example, new question is
HERE).
During playback, it's impossible to change the active track as opposed to almost all other multiple audio / subtitle track-capable players. (For example, with GoodPlayer, a double-swipe up/down and left/right for subtitle and audio track change, respectively.) It needs to be done in the file list view. In the following mini-tutorial, I show how it needs to be done. For the tutorial, I use the standardized Harry Potter test video MKV available for download
HERE. It has two audio tracks (English and Hindi).
First, in the file list view, tap the tool icon in the upper right corner. It's annotated in the following screenshot:
Now, tap the now-displayed arrow icon on the far right of your video. It's also annotated in the following screenshot:
On the now-displayed dialog, tap the Tool icon in the audio row (annotated):
In the list, select your audio stream :
Unfortunately, only the stream index is displayed, not the language code or the human name of the tracks (unlike with most other players), which means it's not very easy to select the track you'd like to read / listen to. This is a major problem with AVPlayer, which, hopefully, will be fixed in the future.
With both subtitles and audio tracks, the first will be the default. With subtitles, you will need to separately enable displaying the manually (or automatically, see previous sentence) during playback with the icon annotated in the following screenshot:
Also note that this has also been shown with ProPlayer in the section
UPDATE (09/11/2012, even later): of my previous Subler OCR guide. ProPlayer is a slightly dumbed-down version of AVPlayer(HD); this is why its track selection needs to be configured in exactly the same way as in AVPlayer(HD).