<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Aug 26, 2021 at 8:35 PM Colossus <<a href="mailto:colossus73@gmail.com">colossus73@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Thanks for replying Paul, very much appreciated. I used 32<br><div>because I followed Olive video editor's source code; it resembles</div><div>what my 2009 still developed software does: making a video file</div><div>of pictures with some transiction effect. Anyway I solved the crash</div><div>but VLC gives a black screen and a lot of totally undocumented </div><div>error messages in the terminal window when reproducing the video</div><div>file...</div></div></blockquote><div><br></div><div>Probably because you mux incorrectly... </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><br></div><div>if you want to give a look to the software: <a href="http://imagination.sourceforge.net/" target="_blank">http://imagination.sourceforge.net/</a></div><div><br></div><div>Many thanks</div><div>Giuseppe</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 26 Aug 2021 at 20:16, Paul B Mahol <<a href="mailto:onemda@gmail.com" target="_blank">onemda@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Aug 18, 2021 at 1:17 PM Colossus <<a href="mailto:colossus73@gmail.com" target="_blank">colossus73@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Ok, I reordered the code. I don't get anymore the annoying message<div>'input picture width greater than stride' but I get a crash in memalloc() called</div><div>by av_send_frame().</div><div><br></div><div><b>This is the gdb output:</b></div><div>Thread 1 "imagination" received signal SIGABRT, Aborted.<br>__GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50<br>50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.<br>(gdb) bt<br>#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50<br>#1 0x00007ffff5518537 in __GI_abort () at abort.c:79<br>#2 0x00007ffff5571768 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff567fe2d "%s\n")<br> at ../sysdeps/posix/libc_fatal.c:155<br>#3 0x00007ffff5578a5a in malloc_printerr (str=str@entry=0x7ffff5682110 "malloc_consolidate(): invalid chunk size")<br> at malloc.c:5347<br>#4 0x00007ffff5579918 in malloc_consolidate (av=av@entry=0x7ffff56b1b80 <main_arena>) at malloc.c:4477<br>#5 0x00007ffff557b755 in _int_malloc (av=av@entry=0x7ffff56b1b80 <main_arena>, bytes=bytes@entry=16288) at malloc.c:3699<br>#6 0x00007ffff557c4af in _int_memalign<br> (av=av@entry=0x7ffff56b1b80 <main_arena>, alignment=alignment@entry=64, bytes=bytes@entry=16176) at malloc.c:4684<br>#7 0x00007ffff557d55c in _mid_memalign (alignment=64, bytes=16176, address=<optimized out>) at malloc.c:3312<br>#8 0x00007ffff1e9fb2a in x264_malloc () at /lib/x86_64-linux-gnu/libx264.so.160<br>#9 0x00007ffff1eba75c in () at /lib/x86_64-linux-gnu/libx264.so.160<br>#10 0x00007ffff1ebe6b0 in () at /lib/x86_64-linux-gnu/libx264.so.160<br>#11 0x00007ffff1f27957 in () at /lib/x86_64-linux-gnu/libx264.so.160<br>#12 0x00007ffff1ea4aa1 in x264_encoder_encode () at /lib/x86_64-linux-gnu/libx264.so.160<br>#13 0x00007ffff62df6d8 in () at /lib/x86_64-linux-gnu/libavcodec.so.58<br>#14 0x00007ffff6094c37 in avcodec_encode_video2 () at /lib/x86_64-linux-gnu/libavcodec.so.58<br>#15 0x00007ffff6095012 in () at /lib/x86_64-linux-gnu/libavcodec.so.58<br>#16 0x00007ffff609519f in <b>avcodec_send_frame</b> () at /lib/x86_64-linux-gnu/libavcodec.so.58<br>#17 0x000055555557aaae in img_export_encode_av_frame<br> (pkt=0x5555556e6d60, ctx=0x55555643cb40, fmt=0x5555564859c0, frame=<optimized out>) at export.c:968<br></div><div><br></div><div>And this is the code:</div><div>static gboolean img_export_frame_to_avframe(img_window_struct *img, cairo_surface_t *surface)<br>{<br> static gint i = 0;<br><br> gint width, height, stride, row, col, offset, ret;<br> uint8_t *pix, *data;<br> AVFrame *frame;<br><br> /* Image info and pixel data */<br> width = cairo_image_surface_get_width( surface );<br> height = cairo_image_surface_get_height( surface );<br> stride = cairo_image_surface_get_stride( surface );<br> pix = cairo_image_surface_get_data( surface );<br><br> /* Initialize AVFrame to be sent to the encoder */<br> frame = av_frame_alloc();<br> frame->format = img->codec_context->pix_fmt;<br> frame->width = img->video_size[0];<br> frame->height = img->video_size[1];<br> av_frame_get_buffer(frame, 32);<br></div></div></blockquote><div><br></div><div>Why 32?, in doxy 0 is recommended, unless programmer know exactly what he is doing. </div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><br> /* Fill the frame data with pixels from the Cairo surface */<br> for( row = 0; row < height; row++ )<br> {<br> data = pix + row * stride;<br> for( col = 0; col < width; col++ )<br> {<br> frame->data[0][row * frame->linesize[0] + col] = data[2];<br> frame->data[1][row * frame->linesize[1] + col] = data[1];<br> frame->data[2][row * frame->linesize[2] + col] = data[0];<br> data += 4;<br> }<br> frame->pts = i;<br> i++;<br> }<br> //sws_scale(img->sws_ctx, pix, img->video_frame->linesize, 0, img->video_frame->height, img->video_frame->data, sws_frame->linesize);<br> <br> ret = img_export_encode_av_frame(frame, img->video_format_context, img->codec_context, &img->video_packet);<br> <br>if (frame)</div><div>{</div><div>av_frame_free(&frame);<br> frame = NULL;<br>}</div><div>return ret;<br>}<br><br>gboolean img_export_encode_av_frame(AVFrame *frame, AVFormatContext *fmt, AVCodecContext *ctx, AVPacket *pkt)<br>{<br> gint ret;<br> <br> /* send the frame to the encoder */<br> ret = <b>avcodec_send_frame</b>(ctx, frame);<br> if (ret < 0)<br> {<br> g_print("Av error: %s\n",av_err2str(ret));<br> g_print("Error sending a frame for encoding\n");<br> return FALSE;<br> }<br> while (ret >= 0)<br> {<br> ret = avcodec_receive_packet(ctx, pkt);<br> if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)<br> return TRUE;<br> else if (ret < 0)<br> g_print("Error during encoding\n");<br> <br> av_interleaved_write_frame(fmt, pkt);<br> av_packet_unref(pkt);<br> return FALSE;<br> }<br> return TRUE;<br>}</div><div><br></div><div>What can be the cause of the crash now?<br></div></div></blockquote><div><br></div><div>Check with valgrind or similar for buffer overreads or overwrites.</div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><br>Thanks<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, 16 Aug 2021 at 16:35, Nicolas George <<a href="mailto:george@nsup.org" target="_blank">george@nsup.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Colossus (12021-08-16):<br>
> I told you I did and avcodec_send_frame() is the one that throws that error.<br>
<br>
I will trust the code I see. Re-post your code once you have fixed the<br>
order of the function calls and checked all the return values properly,<br>
if it still does not work.<br>
<br>
-- <br>
Nicolas George<br>
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