ffmpeg h264有趣的明亮视频失败？_Ffmpeg_Udp_Video Streaming_H.264_Mpeg2 Ts

ffmpeg h264有趣的明亮视频失败？

ffmpeg udp video-streaming

ffmpeg h264有趣的明亮视频失败？,ffmpeg,udp,video-streaming,h.264,mpeg2-ts,Ffmpeg,Udp,Video Streaming,H.264,Mpeg2 Ts,我正在使用我找到的信息尝试使用ffmpeg流媒体服务器 ffmpeg -f dshow -i video="john":audio="doe" -vcodec libx264 -preset ultrafast -tune zerolatency -acodec aac -f mpegts udp://localhost:1234 客户 ffmpeg -i udp://localhost:1234?listen test.mp4 客户端实际上会实时播放视频，但出于测试目的，我现在正

我正在使用我找到的信息尝试使用ffmpeg流媒体

服务器

ffmpeg -f dshow -i video="john":audio="doe" -vcodec libx264
-preset ultrafast -tune zerolatency -acodec aac -f mpegts udp://localhost:1234

客户

ffmpeg -i udp://localhost:1234?listen test.mp4

客户端实际上会实时播放视频，但出于测试目的，我现在正在将输出写入一个文件

有趣的部分来了。我开始流（视频和音频）在一个黑暗的房间，一切都很好我打开房间的灯，客户哭了很多错误。我后来检查了输出，它确实是非常损坏的光打开部分。这背后的原因可能是什么？如果有帮助的话，我会把错误贴在这里

一些错误：

udp://localhost:1234?listen: corrupt decoded frame in stream 0trate= 845.6kbits/s dup=1250 drop=0 speed=1.08x
    Last message repeated 1 times
[h264 @ 0000026c4af69400] Invalid NAL unit 1, skipping.7.61 bitrate= 864.7kbits/s dup=1441 drop=0 speed=1.07x
[h264 @ 0000026c4af69400] Invalid level prefix
[h264 @ 0000026c4af69400] error while decoding MB 18 8
[h264 @ 0000026c4af69400] concealing 911 DC, 911 AC, 911 MV errors in P frame
[h264 @ 0000026c4af4b780] Invalid NAL unit 1, skipping.
[h264 @ 0000026c4af4b780] negative number of zero coeffs at 10 14
[h264 @ 0000026c4af4b780] error while decoding MB 10 14
[h264 @ 0000026c4af4b780] concealing 679 DC, 679 AC, 679 MV errors in P frame
udp://localhost:1234?listen: corrupt decoded frame in stream 0
    Last message repeated 1 times
[h264 @ 0000026c4ba1e1c0] Invalid NAL unit 1, skipping.8.21 bitrate= 858.0kbits/s dup=1460 drop=0 speed=1.07x
[h264 @ 0000026c4ba1e1c0] out of range intra chroma pred mode
[h264 @ 0000026c4ba1e1c0] error while decoding MB 34 18
[h264 @ 0000026c4ba1e1c0] concealing 495 DC, 495 AC, 495 MV errors in P frame
[h264 @ 0000026c4bb16840] top block unavailable for requested intra mode
[h264 @ 0000026c4bb16840] error while decoding MB 10 0
[h264 @ 0000026c4bb16840] concealing 160 DC, 160 AC, 160 MV errors in P frame
udp://localhost:1234?listen: corrupt decoded frame in stream 0
[h264 @ 0000026c4bb16cc0] Invalid NAL unit 0, skipping.8.58 bitrate= 853.9kbits/s dup=1463 drop=0 speed=1.06x
[h264 @ 0000026c4bb16cc0] corrupted macroblock 16 28 (total_coeff=-1)
[h264 @ 0000026c4bb16cc0] error while decoding MB 16 28
[h264 @ 0000026c4bb16cc0] concealing 113 DC, 113 AC, 113 MV errors in P frame
[h264 @ 0000026c4bb17140] cbp too large (84) at 12 0
[h264 @ 0000026c4bb17140] error while decoding MB 12 0
[h264 @ 0000026c4bb17140] concealing 160 DC, 160 AC, 160 MV errors in P frame
[mpegts @ 0000026c4aeb8d80] PES packet size mismatch

[h264 @ 000002646f0d2f80] cbp too large (118) at 23 1422.25 bitrate= 659.5kbits/s dup=368 drop=0 speed=1.33x
[h264 @ 000002646f0d2f80] error while decoding MB 23 14
[mpegts @ 000002646e578d80] PES packet size mismatch
[h264 @ 000002646f0d2f80] concealing 666 DC, 666 AC, 666 MV errors in P frame
[h264 @ 000002646f0d0f80] concealing 160 DC, 160 AC, 160 MV errors in P frame
[aac @ 000002646e64d640] Number of bands (59) exceeds limit (43).
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 000002646e64d640] Multiple frames in a packet.
[aac @ 000002646e64d640] Reserved bit set.
[aac @ 000002646e64d640] Number of bands (31) exceeds limit (29).
Error while decoding stream #0:1: Invalid data found when processing input
[h264 @ 000002646e5e11c0] concealing 160 DC, 160 AC, 160 MV errors in P frame
udp://localhost:1234?listen: corrupt decoded frame in stream 0trate= 633.1kbits/s dup=368 drop=0 speed=1.35x
    Last message repeated 2 times

编辑：作为建议，我将这些参数添加到服务器

-b:v 1M -bufsize 2M

现在错误基本上消失了。除了有一次好像是在我关上灯的时候发生的，尽管我试了4-5次都没能再现出来

错误：

udp://localhost:1234?listen: corrupt decoded frame in stream 0trate= 845.6kbits/s dup=1250 drop=0 speed=1.08x
    Last message repeated 1 times
[h264 @ 0000026c4af69400] Invalid NAL unit 1, skipping.7.61 bitrate= 864.7kbits/s dup=1441 drop=0 speed=1.07x
[h264 @ 0000026c4af69400] Invalid level prefix
[h264 @ 0000026c4af69400] error while decoding MB 18 8
[h264 @ 0000026c4af69400] concealing 911 DC, 911 AC, 911 MV errors in P frame
[h264 @ 0000026c4af4b780] Invalid NAL unit 1, skipping.
[h264 @ 0000026c4af4b780] negative number of zero coeffs at 10 14
[h264 @ 0000026c4af4b780] error while decoding MB 10 14
[h264 @ 0000026c4af4b780] concealing 679 DC, 679 AC, 679 MV errors in P frame
udp://localhost:1234?listen: corrupt decoded frame in stream 0
    Last message repeated 1 times
[h264 @ 0000026c4ba1e1c0] Invalid NAL unit 1, skipping.8.21 bitrate= 858.0kbits/s dup=1460 drop=0 speed=1.07x
[h264 @ 0000026c4ba1e1c0] out of range intra chroma pred mode
[h264 @ 0000026c4ba1e1c0] error while decoding MB 34 18
[h264 @ 0000026c4ba1e1c0] concealing 495 DC, 495 AC, 495 MV errors in P frame
[h264 @ 0000026c4bb16840] top block unavailable for requested intra mode
[h264 @ 0000026c4bb16840] error while decoding MB 10 0
[h264 @ 0000026c4bb16840] concealing 160 DC, 160 AC, 160 MV errors in P frame
udp://localhost:1234?listen: corrupt decoded frame in stream 0
[h264 @ 0000026c4bb16cc0] Invalid NAL unit 0, skipping.8.58 bitrate= 853.9kbits/s dup=1463 drop=0 speed=1.06x
[h264 @ 0000026c4bb16cc0] corrupted macroblock 16 28 (total_coeff=-1)
[h264 @ 0000026c4bb16cc0] error while decoding MB 16 28
[h264 @ 0000026c4bb16cc0] concealing 113 DC, 113 AC, 113 MV errors in P frame
[h264 @ 0000026c4bb17140] cbp too large (84) at 12 0
[h264 @ 0000026c4bb17140] error while decoding MB 12 0
[h264 @ 0000026c4bb17140] concealing 160 DC, 160 AC, 160 MV errors in P frame
[mpegts @ 0000026c4aeb8d80] PES packet size mismatch

[h264 @ 000002646f0d2f80] cbp too large (118) at 23 1422.25 bitrate= 659.5kbits/s dup=368 drop=0 speed=1.33x
[h264 @ 000002646f0d2f80] error while decoding MB 23 14
[mpegts @ 000002646e578d80] PES packet size mismatch
[h264 @ 000002646f0d2f80] concealing 666 DC, 666 AC, 666 MV errors in P frame
[h264 @ 000002646f0d0f80] concealing 160 DC, 160 AC, 160 MV errors in P frame
[aac @ 000002646e64d640] Number of bands (59) exceeds limit (43).
Error while decoding stream #0:1: Invalid data found when processing input
[aac @ 000002646e64d640] Multiple frames in a packet.
[aac @ 000002646e64d640] Reserved bit set.
[aac @ 000002646e64d640] Number of bands (31) exceeds limit (29).
Error while decoding stream #0:1: Invalid data found when processing input
[h264 @ 000002646e5e11c0] concealing 160 DC, 160 AC, 160 MV errors in P frame
udp://localhost:1234?listen: corrupt decoded frame in stream 0trate= 633.1kbits/s dup=368 drop=0 speed=1.35x
    Last message repeated 2 times

错误减少是因为我提高了比特率？（顺便说一下，我不知道默认比特率）。Bright解码失败是因为它携带了更多的信息，数据？（在原始视频中相同，但可能文件编码的明亮帧较重）

在客户端（我看到您使用的是FFmpeg），添加：

因此，您的CLI将如下所示：

ffmpeg -flags2 showall -i udp://localhost:1234?listen test.mp4

这允许渲染第一个关键帧之前的帧，而不是将其丢弃

一些无人机摄像头（DJI）产生的画面具有相同的问题，只能通过该标志进行纠正。

如果您从灯亮起开始，是否存在此问题？还是只有从黑暗过渡到光明？同样，如果你快速地将相机指向一个全新的场景，你有问题吗？@Brad问题存在于灯光开启时，关闭时消失。啊，好吧，那么i-frames就没有问题了。对不起，帮不上忙了。。。这超出了我所知的深度。强制使用固定比特率怎么样？在一定的比特率以上问题是否可以重现？可能是打包的问题，而且随着灯光的亮起，需要更多的比特来编码你的场景？@Brad请检查编辑。