Hi all! I am checking a C application using ffmpeg libs, which does the following: it demuxes h264 stream from RTSP channel, and, when an event happens, it waits for next keyframe (determined with AVPacket.flags & AV_PKT_FLAG_KEY), creates appropriate decoder AVCodecContext for it, and decodes the frame for further processing. The idea is that having a keyframe, we can decode just single encoded frame and get valid picture. This approach must have been working correctly in practice, but now i have it not working with h264 stream from IP camera Axis M1034-W; the decoding operation indicates that we got no picture (by a avcodec_decode_video2() flag parameter), and prints [h264 @ blah] no picture
This shouldn't be RTP loss, the camera is connected directly to my PC with a patchcord. If that is needed, i can share a remuxed stream dump. BTW Is there an easy way to print out the types of encoded h264 frames (I, P, B...)? Could please somebody elaborate what exactly happens? Is above approach generally broken, or it can be fixed (without decoding a lot more frames)? -- Andrey Utkin _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
