Ffmpeg/AVPacket question

[BigDog6432]

I am trying to create my own AVPackets out of a Java ByteBuffer but I seem to be getting an “Exception_Access_Violation” error. I am using the ReadFewFrames as a starting example.

The video that I am using contains both video and data packets. I would like to replace the data packets with my own packets.

ByteBuffer bb = new ByteBuffer();
byte [] data = new byte[] {0x00, 0x01, ...};
bb.put(data);

BytePointer bp = new BytePointer(bb);
AVPacket av = new AVPacket(bp);

I am copying the following properties from the original data packets into my av packet: dts, duration, flags, pts, size and stream_index.

I then am calling a format.av_interleaved_write_frame passing in my context and av.

and then freeing the packet which I created.
av_packet_unref(av),

When I run my program it dies almost immediately (it looks to be having an issue inside of acutely.dll). When I comment out my code and write and free the original packet the program works fine. Does anybody have a example of doing a something similar that they could share I would greatly appreciate it, or any idea if I am missing a magic line of could.

Thanks in advance

J. Stoy

[saudet]

I think you may want to put your data in the packet by calling AVPacket.data(bp)? Calling AVPacket(bp) isn't going to do that.

[BigDog6432]

Samuel, I made that change. The program completes successfully. Thanks Samuel!

…

On Mon, Mar 22, 2021 at 6:38 PM Samuel Audet ***@***.***> wrote: I think you may want to put your data in the packet by calling AVPacket.data(bp)? Calling AVPacket(bp) isn't going to do that. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1024 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AHLAWYWTRFAIS7WXDZJJSZTTE7WIHANCNFSM4ZUELA5Q> .