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34 lines
1.6 KiB
Markdown
34 lines
1.6 KiB
Markdown
# Video decode batch sample
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This sample decodes multiple files using multiple threads, using the rocDecode library. The input is a directory of files and an input number of threads. The maximum number of threads is capped to 64.
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If the number of files is higher than the number of threads requested by the user, the files are distributed to the threads in a round robin fashion.
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If the number of files is lesser than the number of threads requested by the user, the number of threads created will be equal to the number of files.
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## Prerequisites:
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* Install [rocDecode](https://rocm.docs.amd.com/projects/rocDecode/en/latest/install/rocDecode-build-and-install.html)
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* [FFMPEG](https://ffmpeg.org/about.html)
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```shell
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sudo apt install libavcodec-dev libavformat-dev libavutil-dev
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```
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## Build
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```shell
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mkdir video_decode_batch && cd video_decode_batch
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cmake ../
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make -j
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```
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## Run
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```shell
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./videodecodebatch -i <directory containing input video files [required]>
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-t <number of threads [optional - default:4]>
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-d <Device ID (>= 0) [optional - default:0]>
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-o Directory for output YUV files - optional
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-m output_surface_memory_type - decoded surface memory; optional; default - 3 [0 : OUT_SURFACE_MEM_DEV_INTERNAL/ 1 : OUT_SURFACE_MEM_DEV_COPIED/ 2 : OUT_SURFACE_MEM_HOST_COPIED/ 3 : OUT_SURFACE_MEM_NOT_MAPPED]
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-disp_delay -specify the number of frames to be delayed for display; optional; default: 1
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``` |