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Sur d’autres sites (7451)
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Access violation reading location 0x000000148965F000
14 février 2014, par user3012914I tried to encode BMP Images, which i get from a buffer and store it as a H264 Video. I am stuck with these errors the arrive randomly and repeatedly
I am using Visual Studio 2012
1) Access violation reading location 0x000000148965F000.
2)Heap corruption
The debug shows the error at this point
struct SwsContext* fooContext = sws_getContext(_imgWidth,_imgHeight,PIX_FMT_RGB32,c->width,c->height,PIX_FMT_YUV420P, SWS_FAST_BILINEAR,NULL,NULL,NULL);
sws_scale(fooContext, inpic->data, inpic->linesize, 0, c->height, outpic->data, outpic->linesize); // converting frame size and formatI guess the read violation happens due to non - pre initialized values. But i couldnt exactly understand why. I have also attached part of the code below
PagedImage *inImg = getUpdatedInputImage(0);
ML_CHECK(inImg);
ImageVector imgExt = inImg->getImageExtent();
if ((imgExt.x == _imgWidth) && (imgExt.y == _imgHeight))
{
if (((imgExt.x % 4) == 0) && ((imgExt.y % 4) == 0))
{
_numFramesFld->setIntValue(_numFramesFld->getIntValue() + 1);
MLFree(unicodeFilename);
// configure header
//BITMAPINFO bitmapInfo
// read out input image and write output image into video
// get input image as an array
void* imgData = NULL;
SubImageBox imageBox(imgExt); // get the whole image
getTile(inImg, imageBox, MLuint8Type, &imgData);
MLuint8* iData = (MLuint8*)imgData;
// since we have only images with
// a z-ext of 1, we can compute the c stride as follows
int cStride = _imgWidth * _imgHeight;
int offset = 0;
MLuint8 r=0, g=0, b=0;
// pointer into the bitmap that is
// used to write images into an video
UCHAR* dst = (UCHAR*)_bits;
for (int y = _imgHeight-1; y >= 0; y--)
{ // reversely scan the image. if y-rows of DIB are set in normal order, no compression will be available.
offset = _imgWidth * y;
for (int x = 0; x < _imgWidth; x++)
{
if (_isGreyValueImage)
{
r = iData[offset + x];
*dst++ = (UCHAR)r;
*dst++ = (UCHAR)r;
*dst++ = (UCHAR)r;
}
else
{
b = iData[offset + x]; // windows bitmap need reverse order: bgr instead of rgb
g = iData[offset + x + cStride ];
r = iData[offset + x + cStride + cStride];
*dst++ = (UCHAR)r;
*dst++ = (UCHAR)g;
*dst++ = (UCHAR)b;
}
// alpha channel in input image is ignored
}
}
outbuf_size = 100000 + c->width*c->height*(32>>3); // allocate output buffer
outbuf = static_cast(malloc(outbuf_size));
fileName_ = (_outputFilenameFld->getStringValue()).c_str();
FILE* f = fopen(fileName_,"wb"); // opening video file for writing
if(!f)
{
_messageFld->setStringValue("Cannot open file");
}
else _messageFld->setStringValue("Opened video file for writing\n");
//for(i=0;i<_numFramesFld->getIntValue();i++)
//{
fflush(stdout);
int nbytes = avpicture_get_size(PIX_FMT_YUV420P, c->width, c->height); // allocating outbuffer
uint8_t* outbuffer = (uint8_t*)av_malloc(nbytes*sizeof(uint8_t));
AVFrame* inpic = avcodec_alloc_frame(); // mandatory frame allocation
AVFrame* outpic = avcodec_alloc_frame();
//outpic->pts = (int64_t)((float)i * (1000.0/((float)(c->time_base.den))) * 90); // setting frame pts
avpicture_fill((AVPicture*)inpic,(uint8_t*)dst, PIX_FMT_RGB32, c->width, c->height); // fill image with input screenshot
avpicture_fill((AVPicture*)outpic, outbuffer, PIX_FMT_YUV420P, c->width, c->height); // clear output picture for buffer copy
av_image_alloc(outpic->data, outpic->linesize, c->width, c->height, c->pix_fmt, 1);
inpic->data[0] += inpic->linesize[0]*(c->height-1); // flipping frame
inpic->linesize[0] = -inpic->linesize[0]; // flipping frame
struct SwsContext* fooContext = sws_getContext(_imgWidth,_imgHeight,PIX_FMT_RGB32,c->width,c->height,PIX_FMT_YUV420P, SWS_FAST_BILINEAR,NULL,NULL,NULL);
sws_scale(fooContext, inpic->data, inpic->linesize, 0, c->height, outpic->data, outpic->linesize); // converting frame size and format
out_size = avcodec_encode_video(c, outbuf, outbuf_size, outpic); // encoding video
_messageFld->setStringValue("Encoding frame %3d (size=%5d)\n");
fwrite(outbuf, 1, out_size, f);
delete [] dst; // freeing memory
av_free(outbuffer);
av_free(inpic);
av_free(outpic);
av_free(fooContext);
DeleteObject(_hbitmap);
for(int Z = 0; Z/ encode the delayed frames
fwrite(outbuf, 1, out_size, f);
}
//outbuf[0] = 0x00;
//outbuf[1] = 0x00; // add sequence end code to have a real mpeg file
//outbuf[2] = 0x01;
//outbuf[3] = 0xb7;
//fwrite(outbuf, 1, 4, f);
fclose(f);
avcodec_close(c); // freeing memory
free(outbuf);
av_free(c);
printf("Closed codec and Freed\n");
}
} -
Change ffmpeg output directory
6 mai 2019, par FilipIm using ffmpeg to compress footage and i want to compess the footage of a specific day but when i overwrite the files it outputs a empty stream because it writes as it reads at the same time so i want to rename the output file. Find will give the full path which is necessary but i don’t know how to change the actual file name, rather than the path.
Any suggestions ?
find /home/server/recordings/compress -name '*.mp4' -print0 | xargs -0 -I{} ffmpeg -i {} -c:v libx265 -preset fast -crf 25 -x265-params "vbv-maxrate=1500:vbv-bufsize=1000" -c:a aac {}
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FFMPEG extracting 1 second resized with copy codec
28 avril 2019, par boblapointeHow can I extract 1 second ( using fast seek ) from a video, resize it, using vp9 ? I always get the same errors. Here are the bare bone commands I’m trying :
ffmpeg -ss 00:00:10 -i test.webm -to 00:00:01 -filter:v "scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease" -c:v libvpx-vp9 -y output.webm
It returns :
"Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
After playing around I realize that this will work :
ffmpeg -ss 00:00:10 -i test.webm -to 00:00:01 -c copy -y output.webm
Not ideal but at least it works, so I add the filter :
ffmpeg -ss 00:00:10 -i test.webm -to 00:00:01 -filter:v "scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease" -c copy -y output.webm
Ant then I get :
"Filtering and streamcopy cannot be used together."
I’ve tried all kinds of combinations, unsuccessfully. Any hint would be appreciated. Thank you
Here is the full log of the first command :
ffmpeg version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2000-2018 the FFmpeg developers built with gcc 7 (Ubuntu 7.3.0-16ubuntu3) configuration : —prefix=/usr —extra-version=0ubuntu0.18.04.1 —toolchain=hardened —libdir=/usr/lib/x86_64-linux-gnu —incdir=/usr/include/x86_64-linux-gnu —enable-gpl —disable-stripping —enable-avresample —enable-avisynth —enable-gnutls —enable-ladspa —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librubberband —enable-librsvg —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-omx —enable-openal —enable-opengl —enable-sdl2 —enable-libdc1394 —enable-libdrm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libopencv —enable-libx264 —enable-shared libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libavresample 3. 7. 0 / 3. 7. 0 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 Splitting the commandline. Reading option ’-ss’ ... matched as option ’ss’ (set the start time offset) with argument ’00:00:10’. Reading option ’-i’ ... matched as input url with argument ’test.webm’. Reading option ’-to’ ... matched as option ’to’ (record or transcode stop time) with argument ’00:00:01’. Reading option ’-filter:v’ ... matched as option ’filter’ (set stream filtergraph) with argument ’scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease’. Reading option ’-c:v’ ... matched as option ’c’ (codec name) with argument ’libvpx-vp9’. Reading option ’-y’ ... matched as option ’y’ (overwrite output files) with argument ’1’. Reading option ’-v’ ... matched as option ’v’ (set logging level) with argument ’debug’. Reading option ’output.webm’ ... matched as output url. Finished splitting the commandline. Parsing a group of options : global . Applying option y (overwrite output files) with argument 1. Applying option v (set logging level) with argument debug. Successfully parsed a group of options. Parsing a group of options : input url test.webm. Applying option ss (set the start time offset) with argument 00:00:10. Successfully parsed a group of options. Opening an input file : test.webm. [NULL @ 0x55ce679f8920] Opening ’test.webm’ for reading [file @ 0x55ce679f9340] Setting default whitelist ’file,crypto’ [matroska,webm @ 0x55ce679f8920] Format matroska,webm probed with size=2048 and score=100 st:0 removing common factor 1000000 from timebase [matroska,webm @ 0x55ce679f8920] Before avformat_find_stream_info() pos : 566 bytes read:32768 seeks:0 nb_streams:1 [matroska,webm @ 0x55ce679f8920] All info found [matroska,webm @ 0x55ce679f8920] After avformat_find_stream_info() pos : 72449 bytes read:72449 seeks:0 frames:1 Input #0, matroska,webm, from ’test.webm’ : Metadata : ENCODER : Lavf57.83.100 Duration : 00:00:15.03, start : 5.016000, bitrate : 1146 kb/s Stream #0:0(eng), 1, 1/1000 : Video : vp9 (Profile 0), 1 reference frame, yuv420p(tv), 1280x720, 0/1, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default) Metadata : DURATION : 00:00:15.025000000 Successfully opened the file. Parsing a group of options : output url output.webm. Applying option to (record or transcode stop time) with argument 00:00:01. Applying option filter:v (set stream filtergraph) with argument scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease. Applying option c:v (codec name) with argument libvpx-vp9. Successfully parsed a group of options. Opening an output file : output.webm. [file @ 0x55ce67b1e820] Setting default whitelist ’file,crypto’ Successfully opened the file. detected 8 logical cores Stream mapping : Stream #0:0 -> #0:0 (vp9 (native) -> vp9 (libvpx-vp9)) Press [q] to stop, [?] for help cur_dts is invalid (this is harmless if it occurs once at the start per stream) Last message repeated 1 times [matroska,webm @ 0x55ce679f8920] first_dts 5016 not matching first dts 10395 (pts 10395, duration 41) in the queue cur_dts is invalid (this is harmless if it occurs once at the start per stream) Last message repeated 6 times [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’w’ to value ’min(iw,1280)’ [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’h’ to value ’min(ih,720)’ [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’force_original_aspect_ratio’ to value ’decrease’ [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’flags’ to value ’bicubic’ [Parsed_scale_0 @ 0x55ce67a7c520] w:min(iw,1280) h:min(ih,720) flags :’bicubic’ interl:0 [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’video_size’ to value ’1280x720’ [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’pix_fmt’ to value ’0’ [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’time_base’ to value ’1/1000’ [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’pixel_aspect’ to value ’1/1’ [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’sws_param’ to value ’flags=2’ [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’frame_rate’ to value ’24000/1001’ [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] w:1280 h:720 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1 sws_param:flags=2 [format @ 0x55ce67ad7d60] compat : called with args=[yuv420p|yuva420p|yuv422p|yuv440p|yuv444p|gbrp] [format @ 0x55ce67ad7d60] Setting ’pix_fmts’ to value ’yuv420p|yuva420p|yuv422p|yuv440p|yuv444p|gbrp’ [AVFilterGraph @ 0x55ce67aec740] query_formats : 6 queried, 5 merged, 0 already done, 0 delayed [Parsed_scale_0 @ 0x55ce67a7c520] w:1280 h:720 fmt:yuv420p sar:1/1 -> w:1280 h:720 fmt:yuv420p sar:1/1 flags:0x4 [libvpx-vp9 @ 0x55ce67b32200] v1.7.0 [libvpx-vp9 @ 0x55ce67b32200] —prefix=/usr —enable-pic —enable-shared —disable-install-bins —disable-install-srcs —size-limit=16384x16384 —enable-postproc —enable-multi-res-encoding —enable-temporal-denoising —enable-vp9-temporal-denoising —enable-vp9-postproc —target=x86_64-linux-gcc [libvpx-vp9 @ 0x55ce67b32200] vpx_codec_enc_cfg [libvpx-vp9 @ 0x55ce67b32200] generic settings g_usage : 0 g_threads : 8 g_profile : 0 g_w : 320 g_h : 240 g_bit_depth : 8 g_input_bit_depth : 8 g_timebase : 1/30 g_error_resilient : 0 g_pass : 0 g_lag_in_frames : 25 [libvpx-vp9 @ 0x55ce67b32200] rate control settings rc_dropframe_thresh : 0 rc_resize_allowed : 0 rc_resize_up_thresh : 60 rc_resize_down_thresh : 30 rc_end_usage : 0 rc_twopass_stats_in : (nil)(0) rc_target_bitrate : 256 [libvpx-vp9 @ 0x55ce67b32200] quantizer settings rc_min_quantizer : 0 rc_max_quantizer : 63 [libvpx-vp9 @ 0x55ce67b32200] bitrate tolerance rc_undershoot_pct : 25 rc_overshoot_pct : 25 [libvpx-vp9 @ 0x55ce67b32200] decoder buffer model rc_buf_sz : 6000 rc_buf_initial_sz : 4000 rc_buf_optimal_sz : 5000 [libvpx-vp9 @ 0x55ce67b32200] 2 pass rate control settings rc_2pass_vbr_bias_pct : 50 rc_2pass_vbr_minsection_pct : 0 rc_2pass_vbr_maxsection_pct : 2000 [libvpx-vp9 @ 0x55ce67b32200] keyframing settings kf_mode : 1 kf_min_dist : 0 kf_max_dist : 128 [libvpx-vp9 @ 0x55ce67b32200] [libvpx-vp9 @ 0x55ce67b32200] vpx_codec_enc_cfg [libvpx-vp9 @ 0x55ce67b32200] generic settings g_usage : 0 g_threads : 0 g_profile : 0 g_w : 1280 g_h : 720 g_bit_depth : 8 g_input_bit_depth : 8 g_timebase : 1001/24000 g_error_resilient : 0 g_pass : 0 g_lag_in_frames : 25 [libvpx-vp9 @ 0x55ce67b32200] rate control settings rc_dropframe_thresh : 0 rc_resize_allowed : 0 rc_resize_up_thresh : 60 rc_resize_down_thresh : 30 rc_end_usage : 0 rc_twopass_stats_in : (nil)(0) rc_target_bitrate : 200 [libvpx-vp9 @ 0x55ce67b32200] quantizer settings rc_min_quantizer : 0 rc_max_quantizer : 63 [libvpx-vp9 @ 0x55ce67b32200] bitrate tolerance rc_undershoot_pct : 25 rc_overshoot_pct : 25 [libvpx-vp9 @ 0x55ce67b32200] decoder buffer model rc_buf_sz : 6000 rc_buf_initial_sz : 4000 rc_buf_optimal_sz : 5000 [libvpx-vp9 @ 0x55ce67b32200] 2 pass rate control settings rc_2pass_vbr_bias_pct : 50 rc_2pass_vbr_minsection_pct : 0 rc_2pass_vbr_maxsection_pct : 2000 [libvpx-vp9 @ 0x55ce67b32200] keyframing settings kf_mode : 1 kf_min_dist : 0 kf_max_dist : 128 [libvpx-vp9 @ 0x55ce67b32200] [libvpx-vp9 @ 0x55ce67b32200] vpx_codec_control [libvpx-vp9 @ 0x55ce67b32200] VP8E_SET_CPUUSED : 1 [libvpx-vp9 @ 0x55ce67b32200] VP8E_SET_ARNR_MAXFRAMES : 0 [libvpx-vp9 @ 0x55ce67b32200] VP8E_SET_ARNR_STRENGTH : 3 [libvpx-vp9 @ 0x55ce67b32200] VP8E_SET_ARNR_TYPE : 3 [libvpx-vp9 @ 0x55ce67b32200] VP8E_SET_STATIC_THRESHOLD : 0 [libvpx-vp9 @ 0x55ce67b32200] VP9E_SET_COLOR_SPACE : 0 [libvpx-vp9 @ 0x55ce67b32200] VP9E_SET_COLOR_RANGE : 0 [libvpx-vp9 @ 0x55ce67b32200] VP9E_SET_TARGET_LEVEL : 255 [libvpx-vp9 @ 0x55ce67b32200] Using deadline : 1000000 Output #0, webm, to ’output.webm’ : Metadata : encoder : Lavf57.83.100 Stream #0:0(eng), 0, 1/1000 : Video : vp9 (libvpx-vp9), 1 reference frame, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 0/1, q=-1—1, 200 kb/s, 23.98 fps, 1k tbn, 23.98 tbc (default) Metadata : DURATION : 00:00:15.025000000 encoder : Lavc57.107.100 libvpx-vp9 Side data : cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1 cur_dts is invalid (this is harmless if it occurs once at the start per stream) Last message repeated 120 times [out_0_0 @ 0x55ce67ac35a0] EOF on sink link out_0_0:default. No more output streams to write to, finishing. [webm @ 0x55ce67b2e2a0] get_metadata_duration returned : 15025000 [webm @ 0x55ce67b2e2a0] Write early duration from recording time = 1000 [webm @ 0x55ce67b2e2a0] end duration = 0 [webm @ 0x55ce67b2e2a0] stream 0 end duration = 0 frame= 0 fps=0.0 q=0.0 Lsize= 1kB time=00:00:00.00 bitrate=N/A speed= 0x video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : unknown Input file #0 (test.webm) : Input stream #0:0 (video) : 120 packets read (1031599 bytes) ; 112 frames decoded ; Total : 120 packets (1031599 bytes) demuxed Output file #0 (output.webm) : Output stream #0:0 (video) : 0 frames encoded ; 0 packets muxed (0 bytes) ; Total : 0 packets (0 bytes) muxed Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) 112 frames successfully decoded, 0 decoding errors [AVIOContext @ 0x55ce67b2e9a0] Statistics : 13 seeks, 9 writeouts [AVIOContext @ 0x55ce67a01660] Statistics : 2137508 bytes read, 4 seeks