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• trying to play corrupted mpeg-ts video using android video view

  20 avril 2015, par asafb

  i am having issue playing partial content of mepg-ts files

  the video files cannot be changed / reformatted / remuxed etc

  server setup :
  contains mpeg-ts video files with h264/acc
  has script that when requested using parameters returns on of the videos "cut"
  according to parameters

  -player :

  (i have no problem playing the full videos "uncut")
  i am trying to play this using android videoview,
  during researching i have found that vlc is the only player able to play the "cut" videos (aka windows mediaplayer, google exoplayer and chrome html5 video player are unable to play)
  running vlc at debug mode revealed error when playing cut video :
  ts error : MPEG-4 descriptor not found
  remuxing the partial content using ffmepg fixes the video

  solutions tried till now :
  1.tried remuxing on the fly using android MediaExtractor and MediaMuxer - but then found out that its not possiable doing that on the fly and anyway that MediaExtractor is unable to open "cut" video
  2.tried getting the first 10K of the full video and then append them to the rest of the "cut" video - the behvior stays the same (vlc able to play while rest wont)

  video files info :

  General
  Count : 278
  Count of stream of this kind : 1
  Kind of stream : General
  Kind of stream : General
  Stream identifier : 0
  ID : 55427
  ID : 55427 (0xD883)
  Count of video streams : 1
  Count of audio streams : 1
  Video_Format_List : AVC
  Video_Format_WithHint_List : AVC
  Codecs Video : AVC
  Audio_Format_List : AAC
  Audio_Format_WithHint_List : AAC
  Audio codecs : AAC LC
  Complete name : 20150416-12.mpg
  File name : 20150416-12
  File extension : mpg
  Format : MPEG-TS
  Format : MPEG-TS
  Format/Extensions usually used : ts m2t m2s m4t m4s ts tp trp
  Commercial name : MPEG-TS
  Internet media type : video/MP2T
  Codec : MPEG-TS
  Codec : MPEG-TS
  Codec/Extensions usually used : ts m2t m2s m4t m4s ts tp trp
  File size : 338329600
  File size : 323 MiB
  File size : 323 MiB
  File size : 323 MiB
  File size : 323 MiB
  File size : 322.7 MiB
  Duration : 27322.311111
  Duration : 27s 322ms
  Duration : 27s 322ms
  Duration : 27s 322ms
  Duration : 00:00:27.322
  Overall bit rate : 1567617
  Overall bit rate : 1 568 Kbps
  Delay : 5542662.322222
  Delay : 1h 32mn
  Delay : 1h 32mn 22s 662ms
  Delay : 1h 32mn
  Delay : 01:32:22.662
  File last modification date : UTC 2015-04-16 09:29:29
  File last modification date (local) : 2015-04-16 12:29:29

  Video
  Count : 205
  Count of stream of this kind : 1
  Kind of stream : Video
  Kind of stream : Video
  Stream identifier : 0
  ID : 68
  ID : 68 (0x44)
  Menu ID : 1
  Menu ID : 1 (0x1)
  Format : AVC
  Format/Info : Advanced Video Codec
  Format/Url : http://developers.videolan.org/x264.html
  Commercial name : AVC
  Format profile : Baseline@L3.0
  Format settings : 3 Ref Frames
  Format settings, CABAC : No
  Format settings, CABAC : No
  Format settings, ReFrames : 3
  Format settings, ReFrames : 3 frames
  Format settings, GOP : M=1, N=25
  Internet media type : video/H264
  Codec ID : 27
  Codec : AVC
  Codec : AVC
  Codec/Family : AVC
  Codec/Info : Advanced Video Codec
  Codec/Url : http://developers.videolan.org/x264.html
  Codec profile : Baseline@L3.0
  Codec settings : 3 Ref Frames
  Codec settings, CABAC : No
  Codec_Settings_RefFrames : 3
  Duration : 4100
  Duration : 4s 100ms
  Duration : 4s 100ms
  Duration : 4s 100ms
  Duration : 00:00:04.100
  Nominal bit rate : 1300000
  Nominal bit rate : 1 300 Kbps
  Width : 704
  Width : 704 pixels
  Height : 576
  Height : 576 pixels
  Pixel aspect ratio : 1.455
  Display aspect ratio : 1.778
  Display aspect ratio : 16:9
  Frame rate : 25.000
  Frame rate : 25.000 fps
  Frame count : 102
  Standard : PAL
  Resolution : 8
  Resolution : 8 bits
  Colorimetry : 4:2:0
  Color space : YUV
  Chroma subsampling : 4:2:0
  Bit depth : 8
  Bit depth : 8 bits
  Scan type : Progressive
  Scan type : Progressive
  Interlacement : PPF
  Interlacement : Progressive
  Bits/(Pixel*Frame) : 0.128
  Writing library : x264 - core 115
  Writing library : x264 core 115
  Writing library/Name : x264
  Writing library/Version : core 115
  Encoding settings : cabac=0 / ref=3 / deblock=1:0:0 / analyse=0x1:0x11 / me=dia / subme=1 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=0 / threads=12 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=0 / keyint=25 / keyint_min=2 / scenecut=40 / intra_refresh=0 / rc_lookahead=5 / rc=cbr / mbtree=1 / bitrate=1300 / ratetol=10.0 / qcomp=0.60 / qpmin=10 / qpmax=51 / qpstep=4 / vbv_maxrate=1300 / vbv_bufsize=2000 / nal_hrd=none / ip_ratio=1.40 / aq=1:1.00

  Audio
  Count : 173
  Count of stream of this kind : 1
  Kind of stream : Audio
  Kind of stream : Audio
  Stream identifier : 0
  ID : 69
  ID : 69 (0x45)
  Menu ID : 1
  Menu ID : 1 (0x1)
  Format : AAC
  Format/Info : Advanced Audio Codec
  Commercial name : AAC
  Format version : Version 4
  Format profile : LC
  Muxing mode : ADTS
  Codec ID : 15
  Codec : AAC LC
  Codec : AAC LC
  Duration : 27322
  Duration : 27s 322ms
  Duration : 27s 322ms
  Duration : 27s 322ms
  Duration : 00:00:27.322
  Bit rate mode : VBR / VBR
  Bit rate mode : Variable / Variable
  Minimum bit rate : 99375
  Minimum bit rate : 99.4 Kbps
  Maximum bit rate : 159750
  Maximum bit rate : 160 Kbps
  Channel(s) : 2
  Channel(s) : 2 channels
  Channel positions : Front : L R
  Channel positions : 2/0/0
  Sampling rate : 48000
  Sampling rate : 48.0 KHz
  Samples count : 1311456
  Compression mode : Lossy
  Compression mode : Lossy

  i prefer finding solution without the need of NDK

  anyone has an idea how to tackle this issue ?
  Thanks

• licheepi zero V3S ffmpeg photo error, kernel uboot is OK

  24 juillet 2023, par xiaocijun

  I use firmware built by someone else and can take photos using fswebcam. Then I changed the root file system to I built Debian with ffmpeg.

  


  I used this command to test my camera

  


  ffmpeg-f v4l2-video_size 800x600 -i /dev/video0-frames 1 out.jpg

  


  But the command line prompts an error

  


  [video4linux2,v4l2 @ 0x5231e0] ioctl(VIDIOC_G_PARM): Inappropriate ioctl for device&#xA;[video4linux2,v4l2 @ 0x5231e0] Time per frame unknown&#xA;[  655.763013] ffmpeg: page allocation failure: order:8, mode:0xcc0(GFP_KERNEL), nodemask=(null)&#xA;[  655.771678] CPU: 0 PID: 236 Comm: ffmpeg Not tainted 5.2.0-licheepi-zero #1&#xA;[  655.778630] Hardware name: Allwinner sun8i Family&#xA;[  655.783363] [<c010ed14>] (unwind_backtrace) from [<c010b72c>] (show_stack&#x2B;0x10/0x14)&#xA;[  655.791107] [<c010b72c>] (show_stack) from [<c0699330>] (dump_stack&#x2B;0x84/0x98)&#xA;[  655.798330] [<c0699330>] (dump_stack) from [<c01fbf30>] (warn_alloc&#x2B;0xcc/0x170)&#xA;[  655.805638] [<c01fbf30>] (warn_alloc) from [<c01fcb40>] (__alloc_pages_nodemask&#x2B;0xacc/0xcf4)&#xA;[  655.814070] [<c01fcb40>] (__alloc_pages_nodemask) from [<c0114350>] (__dma_alloc_buffer.constprop.4&#x2B;0x34/0x17c)&#xA;[  655.824147] [<c0114350>] (__dma_alloc_buffer.constprop.4) from [<c01144bc>] (__alloc_remap_buffer&#x2B;0x24/0x98)&#xA;[  655.833962] [<c01144bc>] (__alloc_remap_buffer) from [<c0114558>] (remap_allocator_alloc&#x2B;0x28/0x30)&#xA;[  655.842996] [<c0114558>] (remap_allocator_alloc) from [<c01146fc>] (__dma_alloc&#x2B;0x16c/0x2c8)&#xA;[  655.851424] [<c01146fc>] (__dma_alloc) from [<c01148d4>] (arm_dma_alloc&#x2B;0x40/0x48)&#xA;[  655.858988] [<c01148d4>] (arm_dma_alloc) from [<c017c928>] (dma_alloc_attrs&#x2B;0x100/0x110)&#xA;[  655.867080] [<c017c928>] (dma_alloc_attrs) from [<c0512da0>] (vb2_dc_alloc&#x2B;0x60/0x104)&#xA;[  655.874994] [<c0512da0>] (vb2_dc_alloc) from [<c050ccac>] (__vb2_queue_alloc&#x2B;0x184/0x444)&#xA;[  655.883165] [<c050ccac>] (__vb2_queue_alloc) from [<c050d4bc>] (vb2_core_reqbufs&#x2B;0x2c4/0x440)&#xA;[  655.891681] [<c050d4bc>] (vb2_core_reqbufs) from [<c0510d34>] (vb2_ioctl_reqbufs&#x2B;0xa0/0xc8)&#xA;[  655.900029] [<c0510d34>] (vb2_ioctl_reqbufs) from [<c04ecd20>] (__video_do_ioctl&#x2B;0x288/0x454)&#xA;[  655.908549] [<c04ecd20>] (__video_do_ioctl) from [<c04ed280>] (video_usercopy&#x2B;0x23c/0x504)&#xA;[  655.916808] [<c04ed280>] (video_usercopy) from [<c02287a8>] (do_vfs_ioctl&#x2B;0xac/0x8cc)&#xA;[  655.924631] [<c02287a8>] (do_vfs_ioctl) from [<c0228ffc>] (ksys_ioctl&#x2B;0x34/0x58)&#xA;[  655.932021] [<c0228ffc>] (ksys_ioctl) from [<c0101000>] (ret_fast_syscall&#x2B;0x0/0x54)&#xA;[  655.939665] Exception stack(0xc3173fa8 to 0xc3173ff0)&#xA;[  655.944713] 3fa0:                   005231e0 00000000 00000003 c0145608 beab41f8 b5857af1&#xA;[  655.952882] 3fc0: 005231e0 00000000 beab4290 00000036 ffffffe7 00000000 005238c0 beab41f8&#xA;[  655.961047] 3fe0: 00000001 beab41b4 b6f167b7 b5857af8&#xA;[  655.966218] Mem-Info:&#xA;[  655.968511] active_anon:3427 inactive_anon:154 isolated_anon:1&#xA;[  655.968511]  active_file:3577 inactive_file:2858 isolated_file:1&#xA;[  655.968511]  unevictable:4 dirty:7 writeback:0 unstable:0&#xA;[  655.968511]  slab_reclaimable:630 slab_unreclaimable:1467&#xA;[  655.968511]  mapped:5008 shmem:429 pagetables:140 bounce:0&#xA;[  655.968511]  free:1421 free_pcp:17 free_cma:0&#xA;[  656.000905] Node 0 active_anon:13708kB inactive_anon:616kB active_file:14308kB inactive_file:11432kB unevictable:16kB isolated(anon):4kB isolated(file):4kB mapped:20032kB dirty:28kB writeback:0kB shmem:1716kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no&#xA;[  656.024016] Normal free:5684kB min:936kB low:1168kB high:1400kB active_anon:13708kB inactive_anon:616kB active_file:14308kB inactive_file:11432kB unevictable:16kB writepending:28kB present:65536kB managed:56092kB mlocked:16kB kernel_stack:392kB pagetables:560kB bounce:0kB free_pcp:68kB local_pcp:68kB free_cma:0kB&#xA;[  656.051697] lowmem_reserve[]: 0 0 0&#xA;[  656.055185] Normal: 173*4kB (ME) 87*8kB (UME) 51*16kB (ME) 25*32kB (ME) 12*64kB (ME) 7*128kB (M) 2*256kB (M) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 5692kB&#xA;[  656.069205] 6865 total pagecache pages&#xA;[  656.072949] 0 pages in swap cache&#xA;[  656.076271] Swap cache stats: add 0, delete 0, find 0/0&#xA;[  656.081486] Free swap  = 0kB&#xA;[  656.084360] Total swap = 0kB&#xA;[  656.087252] 16384 pages RAM&#xA;[  656.090040] 0 pages HighMem/MovableOnly&#xA;[  656.093868] 2361 pages reserved&#xA;[  656.097039] sun6i-csi 1cb4000.csi: dma_alloc_coherent of size 720896 failed&#xA;[video4linux2,v4l2 @ 0x5231e0] ioctl(VIDIOC_REQBUFS): Cannot allocate memory&#xA;/dev/video0: Cannot allocate memory&#xA;</c0101000></c0228ffc></c0228ffc></c02287a8></c02287a8></c04ed280></c04ed280></c04ecd20></c04ecd20></c0510d34></c0510d34></c050d4bc></c050d4bc></c050ccac></c050ccac></c0512da0></c0512da0></c017c928></c017c928></c01148d4></c01148d4></c01146fc></c01146fc></c0114558></c0114558></c01144bc></c01144bc></c0114350></c0114350></c01fcb40></c01fcb40></c01fbf30></c01fbf30></c0699330></c0699330></c010b72c></c010b72c></c010ed14>

  


• Creating buttons with Imagick

  9 juin 2010, par Mikko Koppanen — Imagick, PHP stuff

  A fellow called kakapo asked me to create a button with Imagick. He had an image of the button and a Photoshop tutorial but unfortunately the tutorial was in Chinese. My Chinese is a bit rusty so it will take a little longer to create that specific button

  The button in this example is created after this tutorial http://xeonfx.com/tutorials/easy-button-tutorial/ (yes, I googled “easy button tutorial”). The code and the button it creates are both very simple but the effect looks really nice.

  Here we go with the code :

  php

  < view plain text >

  1. < ?php
  2.  
  3. /* Create a new Imagick object */
  4. $im = new Imagick() ;
  5.  
  6. /* Create empty canvas */
  7. $im->newImage( 200, 200, "white", "png" ) ;
  8.  
  9. /* Create the object used to draw */
  10. $draw = new ImagickDraw() ;
  11.  
  12. /* Set the button color.
  13.   Changing this value changes the color of the button */
  14. $draw->setFillColor( "#4096EE" ) ;
  15.  
  16. /* Create the outer circle */
  17. $draw->circle( 50, 50, 70, 70 ) ;
  18.  
  19. /* Create the smaller circle on the button */
  20. $draw->setFillColor( "white" ) ;
  21.  
  22. /* Semi-opaque fill */
  23. $draw->setFillAlpha( 0.2 ) ;
  24.  
  25. /* Draw the circle */
  26. $draw->circle( 50, 50, 68, 68 ) ;
  27.  
  28. /* Set the font */
  29. $draw->setFont( "./test1.ttf" ) ;
  30.  
  31. /* This is the alpha value used to annotate */
  32. $draw->setFillAlpha( 0.17 ) ;
  33.  
  34. /* Draw a curve on the button with 17% opaque fill */
  35. $draw->bezier( array(
  36.           array( "x" => 10 , "y" => 25 ),
  37.           array( "x" => 39, "y" => 49 ),
  38.           array( "x" => 60, "y" => 55 ),
  39.           array( "x" => 75, "y" => 70 ),
  40.           array( "x" => 100, "y" => 70 ),
  41.           array( "x" => 100, "y" => 10 ),
  42.          ) ) ;
  43.  
  44. /* Render all pending operations on the image */       
  45. $im->drawImage( $draw ) ;
  46.  
  47. /* Set fill to fully opaque */
  48. $draw->setFillAlpha( 1 ) ;
  49.  
  50. /* Set the font size to 30 */
  51. $draw->setFontSize( 30 ) ;
  52.  
  53. /* The text on the */
  54. $draw->setFillColor( "white" ) ;
  55.  
  56. /* Annotate the text */
  57. $im->annotateImage( $draw, 38, 55, 0, "go" ) ;
  58.  
  59. /* Trim extra area out of the image */
  60. $im->trimImage( 0 ) ;
  61.  
  62. /* Output the image */
  63. header( "Content-Type : image/png" ) ;
  64. echo $im ;
  65.  
  66.  ?>

  And here is a few buttons I created by changing the fill color value :