NuppelVideoPlayer disabling audio with DVB recordings when streams change

[otto at kolsi dot fi]

Issue described in following link was fixed at the time, but now it happens again: ​http://www.gossamer-threads.com/lists/mythtv/dev/201065

Before stream/track change, audio is okay but after stream change, audio is disabled. I believe log below shows this happening. As mentioned in the earlier post, if you go to menu you can see 2 audio tracks and you can manually change both of the tracks and it works okay.

I can attach more logs if needed.

2007-07-15 17:10:02.430 AFD: HandleStreamChange(): streams_changed 0x8526cd8 -- stream count 5
2007-07-15 17:10:02.430 AFD: SeekReset(0, 0, do flush, do discard)
2007-07-15 17:10:02.431 AFD: SeekReset() flushing
2007-07-15 17:10:02.432 AFD: Stream #0, has id 0x512 codec id MPEG2VIDEO, type Video, bitrate 0 at 0x0xb34e9470
2007-07-15 17:10:02.435 AFD: InitVideoCodec failed to align dimensions, resetting decoder.
2007-07-15 17:10:02.435 VideoOutputXv: InputChanged(640,480,1.33333)
2007-07-15 17:10:02.440 VideoOutputXv: CreateShmImages(32): video_dim: 640x480
2007-07-15 17:10:02.451 NVP: prebuffering pause
2007-07-15 17:10:02.456 AO: OutputAudioLoop: audio paused
2007-07-15 17:10:02.501 Display Rect  left: 0, top: 0, width: 1360, height: 768, aspect: 1.77778
2007-07-15 17:10:02.501 Video Rect    left: 0, top: 0, width: 640, height: 480, aspect: 1.77778
2007-07-15 17:10:03.305 NVP: ClearAfterSeek(1)
2007-07-15 17:10:03.306 VideoOutputXv: ClearAfterSeek()
2007-07-15 17:10:03.307 detectInterlace(Detect Scan, Interlaced Scan, 29.97, 480) ->Interlaced Scan
2007-07-15 17:10:03.307 AFD: Looking for decoder for MPEG2VIDEO
2007-07-15 17:10:03.307 AFD: Opened codec 0xb34f1a00, id(MPEG2VIDEO) type(Video)
2007-07-15 17:10:03.307 AFD: Stream #1, has id 0x650 codec id MP3, type Audio, bitrate 0 at 0x0xac7d3d70
2007-07-15 17:10:03.307 AFD: Looking for decoder for MP3
2007-07-15 17:10:03.308 AFD: Opened codec 0xb34d69f0, id(MP3) type(Audio)
2007-07-15 17:10:03.308 AFD: Audio Track #1 is A/V stream #1 and has 0 channels in the English language(6647399).
2007-07-15 17:10:03.308 AFD: Stream #2, has id 0x2321 codec id DVB_VBI, type Data, bitrate 0 at 0x0xb34d1110
2007-07-15 17:10:03.309 AFD: data codec (Data)
2007-07-15 17:10:03.309 AFD: Stream #3, has id 0x1027 codec id DVB_SUBTITLE, type Subtitle, bitrate 0 at 0x0xac7d8a10
2007-07-15 17:10:03.309 AFD: subtitle codec (Subtitle)
2007-07-15 17:10:03.309 AFD: Looking for decoder for DVB_SUBTITLE
2007-07-15 17:10:03.309 AFD: Opened codec 0xad00cb20, id(DVB_SUBTITLE) type(Subtitle)
2007-07-15 17:10:03.309 AFD: Subtitle track #1 is A/V stream #3 and is in the Finnish language(6711662).
2007-07-15 17:10:03.310 AFD: Stream #4, has id 0x651 codec id MP3, type Audio, bitrate 0 at 0x0xb34f24c0
2007-07-15 17:10:03.310 AFD: Looking for decoder for MP3
2007-07-15 17:10:03.310 AFD: Opened codec 0xad00ce70, id(MP3) type(Audio)
2007-07-15 17:10:03.310 AFD: Audio Track #2 is A/V stream #4 and has 0 channels in the Dutch; Flemish language(6583668).
2007-07-15 17:10:03.311 AFD: Trying to reselect audio track
2007-07-15 17:10:03.311 AFD: Selected track 1: English MP0 ?ch (A/V Stream #1)
2007-07-15 17:10:03.311 AFD: Initializing audio parms from audio track #1
2007-07-15 17:10:03.311 AFD: Audio format changed 
2007-07-15 17:10:03.311 NVP: Disabling Audio, params(0,0,0)
2007-07-15 17:10:03.312 AO: Killing AudioOutputDSP
2007-07-15 17:10:03.316 AO: OutputAudioLoop: Stop Event
2007-07-15 17:10:03.316 AO: kickoffOutputAudioLoop exiting

[otto at kolsi dot fi]

This issue is still occuring with latest SVN with some recordings (not all). I have a sample recording that causes this, any help how to debug this would be nice. I can also try to reduce the size (now 2.2G) of the recording and share it somehow if anyone has time to take a look at this.

[otto at kolsi dot fi]

Sample recording (25M) that shows this problem is available at: ​http://www.zshare.net/video/732022624263d6/ I think this download is available only for limited time (30 days or so). I can add new samples later again if this expires too soon.

When the program starts, audio disappears altogether. Can be easily reproduced with "mythtv" program. mplayer plays this file normally.

[stuartm]

I can confirm this from the sample provided.

[paulh]

Possible fix

[paulh]

Otto, Can you please test the attached patch on a few problem recordings and a few good ones as well to make sure it doesn't break anything.

[otto at kolsi dot fi]

Replying to paulh:

Otto, Can you please test the attached patch on a few problem recordings and a few good ones as well to make sure it doesn't break anything.

Thanks Paul, this fixes the problem for couple of test recordings that I have :)

I'll keep it applied and try to see if it breaks anything else.

[danielk]

(In [16462]) Refs #3731. Adds a hack from Paul H. that allows the audio to be redetected after a stream change.

Leaving ticket open to investigate further after 0.21 release.

[danielk]

Hack we applied in [16462] appears to work fine, and error is rare, closing as fixed.