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Linux/DRA746: Some 1080 videos are playing in slow motion

user5901284
Intellectual 390 points
Part Number: DRA746

Tool/software: Linux

Hi TI team,

We found Some 1080 videos are playing in slow motion(video is playing in slow motion, Audio is playing at normal speed). We tried to play from our app and gst-launch-1.0, the same behavior.

Uploaded the video to bellowing, could you please comment from your point of view. Thanks.

https://transfer.harman.com/link/2ghA3ZCLrQz6mvETQ9yy0F

  • 0
    TI__Mastermind 30480 points

    Hi Vicky,

    What is the SDK version you are using?

    I tested this stream. It is a 1920x1080 60fps stream. I played back this with PSDKLA3.04 and able to see smooth playback.

    Please make sure you are running only one instance gstreamer video playback for 60fps 1920x1080 stream as this is the maximum IVAHD accelerator can achieve.

    You can decode two instances of 1080p @30 fps .

    Thanks

    Ramprasad

  • 0 in reply to Ramprasad
    Intellectual 390 points

    Hi Ramprasad,

    We are using PSDK 3.04 also. And just use only one instance. But video is in slow motion.

    We use Wayland for video render, whether that plugin will cause this issue? I attahced the pipline and the log,any suggestion from your side? Thanks.

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/videoNotSmooth.7z

    BR

  • 0 in reply to user5901284
    TI__Mastermind 30480 points

    Hi Vicky,

    Waylandsink plugin can not cause this issue, you can try with kmssink once and check the behavior.

    I am also using waylandsink as vido-sink element.

    When I run this pipeline ,

    root@dra7xx-evm:~# gst-launch-1.0 playbin uri=file:///home/root/Lamberghini.mp4 video-sink=waylandsink audio-sink=alsasink

    Setting pipeline to PAUSED ...

    Pipeline is PREROLLING ...

    Pipeline is PREROLLED ...

    Setting pipeline to PLAYING ...

    New clock: GstAudioSinkClock

    Got EOS from element "playbin0".

    Execution ended after 0:02:02.763817093

    Setting pipeline to PAUSED ...

    Setting pipeline to READY ...

    Setting pipeline to NULL ...

    Freeing pipeline ...

    It takes 2.02 minutes which is same as the duration of stream. What is the observation here? Is it taking more than 2.02 minutes.

    I have attached the pipeline in my case. Only difference wrt your pipeline is Your pipeline has Ittiams' video parser and AAC decoder and in my case it is QTdemuxer and software decoder avdec_aac. Rest all in the pipeline are exactly same.

    Thanks

    Ram