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• Android Exoplayer garbled mp4 video output on imagereader surface while playing fine on SurfaceView (Samsung galaxy tab s7)

  29 mars 2023, par Orcun

  Problem :

  


  I am trying to play an mp4 video file on Samsung Galaxy Tab S7 for video processing purposes. For the purpose, I use Exoplayer(v2.18.4) library to be able to play the video onto an ImageReader surface so that I can grab the frames in ImageReader.OnImageAvailableListener.

  


  I do not have any problems in getting the frames. However, the frames I acquire are garbled/corrupted like :

  


  

  


  When I saw this frame, it made me think that it is some sort of color format or codec issue for the mp4 file or device I use. In logcat, there are no errors reported.
Device uses [OMX.qcom.video.decoder.avc] decoder. Also, same video plays nicely on some other devices that use exactly the same decoder.

  


  What I tried so far :

  


  I tried a lot of things to understand the root cause and also find a solution, so my brain currently is free flowing stream. I will try to summarise, please bear with me.

  


  I use a CustomMediaCodecVideoRenderer in my app which overrides MediaCodecVideoRenderer.getMediaFormat of Exoplayer to set color format like :

  


  setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Flexible)


  


  This step proved itself necessary. Without it I get a crash simply because I cannot access the image planes of an image frame in expected YUV image format.
This unfortunately was not enough for the Samsung Galaxy Tab 7 although it was already enough for another device like Xiaomi to render the image correctly.

  


  Then I decided to use a library like ffmpeg to modify the mp4 file itself to maybe use a different profile, color format, resolution that is widely compatible in android devices. No luck so far.
a quick ffprobe on my mp4 file shows :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'outputyuv169.mp4':
Metadata:
  major_brand     : isom
  minor_version   : 512
  compatible_brands: isomiso2avc1mp41
  encoder         : Lavf59.16.100
Duration: 00:03:00.02, start: 0.000000, bitrate: 4823 kb/s
Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 
1280x720 [SAR 1:1 DAR 16:9], 4820 kb/s, 30 fps, 30 tbr, 360k tbn (default)


  


  I tried even recording a simple video on the tablet itself and using that as my input file. Nevertheless, still getting similarly garbled frames.

  


  One thing I keep noticing in logcat is this line :

  


  [OMX.qcom.video.decoder.avc] using color format 0x7fa30c04 in place of 0x7f420888

  


  and

  


  [OMX.qcom.video.decoder.avc] Requested output format 0x7f420888 and got 0x7fa30c04

  


  where 0x7fa30c04 refers to YCbCr_420_SP_VENUS_UBWC. Not really sure If this has anything to do with it. I did not dive too deep into that because same log is present also on other device that renders the mp4 correctly.

  


  I would be grateful for any clue.

  


• video uploading from app using ffmpeg showing error

  9 juillet 2020, par Dhananjay Acharya

  I am trying to implement video upload from app using ffmpeg. when I m trying to upload video showing this errors. sometime video upload keep on loading. any help.

  


  sometimes app freezes and for some videos showing out of memory error

  


  when i run in a real device logcat details

  


  2020-07-09 12:48:14.240 5226-7065/com.mik I/OMXClient: MuxOMX ctor
2020-07-09 12:48:14.369 5226-5226/com.mik I/Choreographer: Skipped 32 frames!  The application may be doing too much work on its main thread.
2020-07-09 12:48:14.377 5226-5857/com.mik D/AudioManager: getStreamVolume isRestricted mode = 0
2020-07-09 12:48:14.401 5226-7067/com.mik D/AudioManager: getStreamVolume isRestricted mode = 0
2020-07-09 12:48:14.468 5226-7065/com.mik E/ACodec: [OMX.qcom.video.encoder.avc] storeMetaDataInBuffers (output) failed w/ err -1010
2020-07-09 12:48:14.468 5226-7065/com.mik I/ExtendedACodec: setupVideoEncoder()
2020-07-09 12:48:14.469 5226-7065/com.mik W/ACodec: do not know color format 0x7fa30c04 = 2141391876
2020-07-09 12:48:14.471 5226-7065/com.mik W/ACodec: do not know color format 0x7f000789 = 2130708361
2020-07-09 12:48:14.521 5226-7065/com.mik I/ACodec: setupAVCEncoderParameters with [profile: Baseline] [level: Level1]
2020-07-09 12:48:14.543 5226-7065/com.mik I/ACodec: [OMX.qcom.video.encoder.avc] cannot encode HDR static metadata. Ignoring.
2020-07-09 12:48:14.543 5226-7065/com.mik I/ACodec: setupVideoEncoder succeeded
2020-07-09 12:48:14.544 5226-7065/com.mik I/ExtendedACodec: [OMX.qcom.video.encoder.avc] configure, AMessage : AMessage(what = 'conf', target = 13) = {
      int32_t width = 720
      int32_t height = 1280
      int32_t bitrate = 2073600
      string mime = "video/avc"
      int32_t frame-rate = 30
      int32_t i-frame-interval = 1
      int32_t color-format = 2130708361
      int32_t encoder = 1
    }
2020-07-09 12:48:14.549 5226-7065/com.mik W/ACodec: do not know color format 0x7f000789 = 2130708361
2020-07-09 12:48:14.556 5226-6625/com.mik D/FA: Connected to remote service
2020-07-09 12:48:14.557 5226-6625/com.mik V/FA: Processing queued up service tasks: 1
2020-07-09 12:48:14.877 5226-7104/com.mik I/OMXClient: MuxOMX ctor
2020-07-09 12:48:14.946 5226-7103/com.mik I/MediaCodec: [OMX.qcom.video.decoder.avc] setting surface generation to 5351428
2020-07-09 12:48:14.948 5226-7104/com.mik I/ExtendedACodec: setupVideoDecoder()
2020-07-09 12:48:14.948 5226-7104/com.mik I/ExtendedACodec: vpp-enable search is 0 and value is 0
2020-07-09 12:48:14.955 5226-7104/com.mik I/ExtendedACodec: Decoder will be in frame by frame mode
2020-07-09 12:48:14.980 5226-7104/com.mik D/SurfaceUtils: set up nativeWindow 0x7f84499e10 for 352x640, color 0x7fa30c06, rotation 0, usage 0x2002900
2020-07-09 12:48:15.065 5226-7028/com.mik D/resp: 0
2020-07-09 12:48:15.072 5226-7104/com.mik D/SurfaceUtils: set up nativeWindow 0x7f84499e10 for 352x640, color 0x7fa30c06, rotation 0, usage 0x2002900
2020-07-09 12:48:15.152 5226-7065/com.mik D/ACodec: dataspace changed to 0x10c10000 (R:2(Limited), P:3(BT601_6_625), M:3(BT601_6), T:3(SMPTE170M)) (R:2(Limited), S:1(BT709), T:3(SMPTE_170M))

2020-07-09 12:48:15.469 5226-7028/com.mik V/MuxRender: Added track #0 with video/avc to muxer
2020-07-09 12:48:15.469 5226-7028/com.mik V/MuxRender: Added track #1 with audio/mp4a-latm to muxer
2020-07-09 12:48:15.646 5226-7028/com.mik I/MPEG4Writer: limits: 4294967295/0 bytes/us, bit rate: -1 bps and the estimated moov size 3195 bytes
2020-07-09 12:48:15.647 5226-7028/com.mik V/MuxRender: Output format determined, writing 15 samples / 6054 bytes to muxer.
2020-07-09 12:48:15.647 5226-7140/com.mik I/MPEG4Writer: setStartTimestampUs: 0
2020-07-09 12:48:15.647 5226-7140/com.mik I/MPEG4Writer: Earliest track starting time: 0
2020-07-09 12:48:15.650 5226-7139/com.mik I/MPEG4Writer: setStartTimestampUs: 0
2020-07-09 12:48:27.318 5226-7028/com.mik D/MPEG4Writer: Video track stopping
2020-07-09 12:48:27.318 5226-7139/com.mik I/MPEG4Writer: Received total/0-length (401/1) buffers and encoded 401 frames. - Video
2020-07-09 12:48:27.326 5226-7140/com.mik I/MPEG4Writer: Received total/0-length (641/1) buffers and encoded 641 frames. - Audio
2020-07-09 12:48:27.326 5226-7140/com.mik I/MPEG4Writer: Audio track drift time: 0 us
2020-07-09 12:48:27.327 5226-7028/com.mik D/MPEG4Writer: Audio track stopped
2020-07-09 12:48:27.327 5226-7028/com.mik D/MPEG4Writer: Duration from tracks range is [14850005, 14883989] us
2020-07-09 12:48:27.327 5226-7028/com.mik D/MPEG4Writer: Stopping writer thread
2020-07-09 12:48:27.329 5226-7138/com.mik D/MPEG4Writer: 1 chunks are written in the last batch
2020-07-09 12:48:27.329 5226-7028/com.mik D/MPEG4Writer: Writer thread stopped
2020-07-09 12:48:27.332 5226-7028/com.mik I/MPEG4Writer: The mp4 file will not be streamable.
2020-07-09 12:48:27.378 5226-7104/com.mik E/BufferQueueProducer: [SurfaceTexture-1-5226-2] cancelBuffer: BufferQueue has been abandoned
2020-07-09 12:48:27.465 5226-7028/com.mik D/MPEG4Writer: Video track stopping
2020-07-09 12:48:27.494 5226-5226/com.mik I/Timeline: Timeline: Activity_launch_request time:148842468 intent:Intent { cmp=com.mik/.Video_Recording.GallerySelectedVideo.GallerySelectedVideo_A (has extras) }
2020-07-09 12:48:27.541 5226-6625/com.mik V/FA: Recording user engagement, ms: 13774
2020-07-09 12:48:27.561 5226-6625/com.mik V/FA: Connecting to remote service
2020-07-09 12:48:27.578 5226-5857/com.mik D/AudioManager: getStreamVolume isRestricted mode = 0
2020-07-09 12:48:27.584 5226-6625/com.mik V/FA: Activity paused, time: 160261301
2020-07-09 12:48:27.652 5226-6625/com.mik V/FA: Connection attempt already in progress
2020-07-09 12:48:27.727 5226-5226/com.mik I/ExoPlayerImpl: Init d0eca9e [ExoPlayerLib/2.11.1] [oxygen, MI MAX 2, Xiaomi, 25]


  


• lavfi/framequeue : remove redundant logic code

  14 septembre 2023, par 杨亚磊 via ffmpeg-devel

  lavfi/framequeue : remove redundant logic code
  In this logical branch, fq->queued and fq->allocated must be equal.
  
  Deleting this code will make it easier to understand the logic
  
  (copy the data before tail to the newly requested space)
  Signed-off-by : yangyalei <yangyalei@xiaomi.com>
  

  • [DH] libavfilter/framequeue.c