ffmpeg - 如何使用 ffmpeg 生成编码的 HEVC 比特流？

Question

我能够使用 HEVC 将 YUV 文件编码为 mp4:

ffmpeg.exe -f rawvideo -s 1920x1080 -pix_fmt yuv420p -i input.yuv -c:v hevc -r 30 -x265-params crf=27 -vframes 300 -an -y test.mp4

这是 mp4box -info test.mp4 显示:

* Movie Info *
        Timescale 1000 - Duration 00:00:10.000
        1 track(s)
        Fragmented File: no
        File suitable for progressive download (moov before mdat)
        File Brand isom - version 512
        Created: UNKNOWN DATE   Modified: UNKNOWN DATE File has no MPEG4 IOD/OD

iTunes Info:
        Encoder Software: Lavf56.11.100

Track # 1 Info - TrackID 1 - TimeScale 15360 - Media Duration 00:00:10.000 Track has 1 edit lists: track duration is 00:00:10.000 Media Info: Language "Undetermined" - Type "vide:hev1" - 300 samples Visual Track layout: x=0 y=0 width=1920 height=1080 MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x23 HEVC Video - Visual Size 1920 x 1080
        HEVC Info: Profile Main @ Level 5 - Chroma Format 1
        NAL Unit length bits: 32 - general profile compatibility 0x60000000
        Parameter Sets: 1 VPS 1 SPS 1 PPS
        SPS resolution 1920x1080
        Bit Depth luma 8 - Chroma 8 - 1 temporal layers

但是我怎样才能获得可解码的比特流呢？我试过了

 mp4box -raw 1 test.mp4 -out out.bin

它给出:

Extracting MPEG-H HEVC stream to hevc

但是out.bin无法被HM或elecard解码。

谢谢

Answer 1

使用

ffmpeg -i input.mp4 -c:v hevc -f hevc out.bin

生成附件B字节流。这可以馈送到另一个解码器。