The VideoLAN Forums

Posted: **30 Nov 2014 16:06**

Hi
I am developing libvlc based video player. Everything is fine except one strange problem...
If a video file is MKV H264 and it has sections it plays up to some point(s) jumps back few minutes before and does it again and again (loop)...
Strange, I tried to play same file(s) using the player itself (using default settings), they were fine but if I did the same using the libvlc libraries (code sample: https://wiki.videolan.org/LibVLC_Tutorial) video looped every time in the same points.
I have heard that there might be a problem with chapter like this one: https://forum.videolan.org/viewtopic.ph ... kv#p294193 but if I changed VLC player setting the problem did not appear in VLC player. When I changed the chapter settings in code - nothing happened (looping every time). What could I do?

This is the log (exactly in the moment of rewind):

Code: Select all

[143eb39c] direct3d vout display debug: Created 217x34 texture for OSD
mkv demux debug: NEW CHAPTER 1059101000
[14376994] mkv demux debug: NEW CHAPTER 1059101000
direct3d vout display debug: Created 934x43 texture for OSD
[143eb39c] direct3d vout display debug: Created 934x43 texture for OSD
direct3d vout display debug: Created 558x43 texture for OSD
[143eb39c] direct3d vout display debug: Created 558x43 texture for OSD
direct3d vout display debug: Created 642x43 texture for OSD
[143eb39c] direct3d vout display debug: Created 642x43 texture for OSD
direct3d vout display debug: Created 836x109 texture for OSD
[143eb39c] direct3d vout display debug: Created 836x109 texture for OSD
direct3d vout display debug: Created 279x101 texture for OSD
[143eb39c] direct3d vout display debug: Created 279x101 texture for OSD
direct3d vout display debug: Created 837x110 texture for OSD
[143eb39c] direct3d vout display debug: Created 837x110 texture for OSD
direct3d vout display debug: Created 811x43 texture for OSD
[143eb39c] direct3d vout display debug: Created 811x43 texture for OSD
direct3d vout display debug: Created 466x44 texture for OSD
[143eb39c] direct3d vout display debug: Created 466x44 texture for OSD
direct3d vout display debug: Created 935x43 texture for OSD
[143eb39c] direct3d vout display debug: Created 935x43 texture for OSD
direct3d vout display debug: Created 431x34 texture for OSD
[143eb39c] direct3d vout display debug: Created 431x34 texture for OSD
direct3d vout display debug: Created 324x100 texture for OSD
[143eb39c] direct3d vout display debug: Created 324x100 texture for OSD
direct3d vout display debug: Created 527x44 texture for OSD
[143eb39c] direct3d vout display debug: Created 527x44 texture for OSD
direct3d vout display debug: Created 117x43 texture for OSD
[143eb39c] direct3d vout display debug: Created 117x43 texture for OSD
direct3d vout display debug: Created 193x100 texture for OSD
[143eb39c] direct3d vout display debug: Created 193x100 texture for OSD
direct3d vout display debug: Created 633x110 texture for OSD
[143eb39c] direct3d vout display debug: Created 633x110 texture for OSD
**********JUMP BACK RIGHT NOW:**********
spudec decoder debug: invalid starting packet (size < 4 or pts <=0)
[1444a694] spudec decoder debug: invalid starting packet (size < 4 or pts <=0)
spudec decoder debug: spu size: 0, i_pts: 0 i_buffer: 128
mkv demux debug: seek request to -1 (0.161616%)
mkv demux debug: seek got 1099760000 (16%)
[1444a694] spudec decoder debug: spu size: 0, i_pts: 0 i_buffer: 128
[14376994] mkv demux debug: seek request to -1 (0.161616%)
[14376994] mkv demux debug: seek got 1099760000 (16%)
main input debug: Buffering 0%
main input debug: Buffering 0%
main input debug: Buffering 11%
[1437ba04] main input debug: Buffering 0%
[1437ba04] main input debug: Buffering 0%
[1437ba04] main input debug: Buffering 11%
main input debug: Buffering 20%
main input debug: Buffering 29%
main input debug: Buffering 38%
main input debug: Buffering 49%
main input debug: Buffering 59%
main input debug: Buffering 68%
main input debug: Buffering 77%
main input debug: Buffering 86%
[1437ba04] main input debug: Buffering 20%
[1437ba04] main input debug: Buffering 29%
[1437ba04] main input debug: Buffering 38%
[1437ba04] main input debug: Buffering 49%
[1437ba04] main input debug: Buffering 59%
[1437ba04] main input debug: Buffering 68%
[1437ba04] main input debug: Buffering 77%
[1437ba04] main input debug: Buffering 86%
main input debug: Buffering 95%
main decoder debug: End of audio preroll
main input debug: Stream buffering done (3879 ms in 12 ms)
[1437ba04] main input debug: Buffering 95%
[1448fbe4] main decoder debug: End of audio preroll
[1437ba04] main input debug: Stream buffering done (3879 ms in 12 ms)
main decoder debug: End of video preroll
[144643cc] main decoder debug: End of video preroll
main decoder debug: Received first picture
[144643cc] main decoder debug: Received first picture
main input debug: Decoder buffering done in 378 ms
[1437ba04] main input debug: Decoder buffering done in 378 ms
main audio output warning: playback way too early (-834001): playing silence
[12320c2c] main audio output warning: playback way too early (-834001): playing silence
main audio output debug: inserting 40032 zeroes
[12320c2c] main audio output debug: inserting 40032 zeroes
direct3d vout display debug: Created 633x110 texture for OSD
[143eb39c] direct3d vout display debug: Created 633x110 texture for OSD
spudec decoder debug: invalid starting packet (size < 4 or pts <=0)
[1444a694] spudec decoder debug: invalid starting packet (size < 4 or pts <=0)
spudec decoder debug: spu size: 0, i_pts: 0 i_buffer: 128
mkv demux debug: seek request to -1 (0.151515%)
mkv demux debug: seek got 1027403000 (15%)
[1444a694] spudec decoder debug: spu size: 0, i_pts: 0 i_buffer: 128
[14376994] mkv demux debug: seek request to -1 (0.151515%)
[14376994] mkv demux debug: seek got 1027403000 (15%)
main input debug: Buffering 0%
main input debug: Buffering 0%
main input debug: Buffering 8%
main input debug: Buffering 16%
[1437ba04] main input debug: Buffering 0%
[1437ba04] main input debug: Buffering 0%
[1437ba04] main input debug: Buffering 8%
[1437ba04] main input debug: Buffering 16%
main input debug: Buffering 23%
main input debug: Buffering 30%
main input debug: Buffering 37%
main input debug: Buffering 44%
main input debug: Buffering 52%
main input debug: Buffering 59%
main input debug: Buffering 67%
main input debug: Buffering 75%
main input debug: Buffering 82%
main decoder debug: End of audio preroll
main input debug: Buffering 90%
main input debug: Buffering 98%
main input debug: Stream buffering done (4921 ms in 9 ms)
[1437ba04] main input debug: Buffering 23%
[1437ba04] main input debug: Buffering 30%
[1437ba04] main input debug: Buffering 37%
[1437ba04] main input debug: Buffering 44%
[1437ba04] main input debug: Buffering 52%
[1437ba04] main input debug: Buffering 59%
[1437ba04] main input debug: Buffering 67%
[1437ba04] main input debug: Buffering 75%
[1437ba04] main input debug: Buffering 82%
[1448fbe4] main decoder debug: End of audio preroll
[1437ba04] main input debug: Buffering 90%
[1437ba04] main input debug: Buffering 98%
[1437ba04] main input debug: Stream buffering done (4921 ms in 9 ms)
main decoder debug: End of video preroll
[144643cc] main decoder debug: End of video preroll
main decoder debug: Received first picture
[144643cc] main decoder debug: Received first picture
main input debug: Decoder buffering done in 500 ms
[1437ba04] main input debug: Decoder buffering done in 500 ms
main audio output warning: playback way too early (-137637): playing silence
[12320c2c] main audio output warning: playback way too early (-137637): playing silence
main audio output debug: inserting 6606 zeroes
[12320c2c] main audio output debug: inserting 6606 zeroes
main video output debug: picture might be displayed late (missing 5 ms)
[1b5e47d4] main video output debug: picture might be displayed late (missing 5 ms)

Btw, there are no messages like spudecoder error while plainig the same video(s) directly in VLC player.
Please help

Btw, Same behavior on VLC 2.1.0 and 2.1.5

Posted: **01 Dec 2014 19:41**

Some update...

this:
spudec decoder debug: invalid starting packet (size < 4 or pts <=0)
[1444a694] spudec decoder debug: invalid starting packet (size < 4 or pts <=0)

is a result of incorrect sub picture data - disabling subtitles this message disappeared.

Now it looks like a jump from 16% to 15%. Completely unclear!

Code: Select all

[147b86c4] mkv demux debug: seek request to -1 (0.161616%)
[147b86c4] mkv demux debug: seek got 1099760000 (16%)
[147bc6d4] main input debug: Buffering 0%
[147bc6d4] main input debug: Buffering 0%
[147bc6d4] main input debug: Buffering 11%
[147bc6d4] main input debug: Buffering 20%
[147bc6d4] main input debug: Buffering 29%
[147bc6d4] main input debug: Buffering 38%
[147bc6d4] main input debug: Buffering 49%
[147bc6d4] main input debug: Buffering 59%
[147bc6d4] main input debug: Buffering 68%
[147bc6d4] main input debug: Buffering 77%
[147bc6d4] main input debug: Buffering 86%
[147bc6d4] main input debug: Buffering 95%
[1493fc0c] main decoder debug: End of audio preroll
[147bc6d4] main input debug: Stream buffering done (3879 ms in 13 ms)
[1ba10cb4] main decoder debug: End of video preroll
[1ba10cb4] main decoder debug: Received first picture
[147bc6d4] main input debug: Decoder buffering done in 369 ms
[00900c2c] main audio output warning: playback way too early (-851001): playing silence
[00900c2c] main audio output debug: inserting 40848 zeroes
position:  0.161606
[147b86c4] mkv demux debug: seek request to -1 (0.151515%)
[147b86c4] mkv demux debug: seek got 1027403000 (15%)

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MKV + H264 => libvlc looping sections.

MKV + H264 => libvlc looping sections.

Re: MKV + H264 => libvlc looping sections.