<div dir="ltr">Hi all,<div><br></div><div>I have a problem when I try to decode a specific video file, using a C++ wrapper around FFmpeg library (<a href="https://github.com/mikrosimage/avTranscoder">https://github.com/mikrosimage/avTranscoder</a>).</div><div><br></div><div>When I decode the first frame, I get the error: </div><div><font color="#333333" face="Arial, sans-serif"><b>[h264 @ 0xc60fa0] no frame!</b></font></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif"><b>Invalid data found when processing input</b></span><br></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif"><br></span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif">The file is not corrupted because ffplay succeeded to decode the video.</span></div><div><span style="color:rgb(51,51,51);font-family:Arial,sans-serif">Is there any parameter which is use in the ffmpeg application to manage h264?</span></div><div style>I think the problem is that I am not reading the first frame... Maybe a part of the header... Any idea ?</div><div style><br class=""><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-weight:bold">------------------------------------------------------------------------</span><br></div><div><i><font size="4">ffprobe inputFile.mp4</font></i></div><div><div><div class="gmail_signature"><div dir="ltr"><div dir="ltr">ffprobe version 1.0 Copyright (c) 2007-2012 the FFmpeg developers</div><div dir="ltr"> built on Oct 4 2012 10:40:23 with gcc 4.6 (SUSE Linux)</div><div dir="ltr"> configuration: --prefix=/usr --mandir=/usr/share/man --libdir=/usr/lib64 --shlibdir=/usr/lib64 --disable-stripping --enable-pthreads --enable-shared --enable-avfilter --disable-static --enable-libfaac --enable-libmp3lame --enable-libxvid --enable-libx264 --enable-nonfree --enable-postproc --enable-shared --enable-libdc1394 --enable-libtheora --enable-libschroedinger --enable-libvpx --enable-gpl --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-version3 --enable-x11grab</div><div dir="ltr"> libavutil 51. 73.101 / 51. 73.101</div><div dir="ltr"> libavcodec 54. 59.100 / 54. 59.100</div><div dir="ltr"> libavformat 54. 29.104 / 54. 29.104</div><div dir="ltr"> libavdevice 54. 2.101 / 54. 2.101</div><div dir="ltr"> libavfilter 3. 17.100 / 3. 17.100</div><div dir="ltr"> libswscale 2. 1.101 / 2. 1.101</div><div dir="ltr"> libswresample 0. 15.100 / 0. 15.100</div><div dir="ltr"> libpostproc 52. 0.100 / 52. 0.100</div><div dir="ltr">Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'inputFile.mp4':</div><div dir="ltr"> Metadata:</div><div dir="ltr"> major_brand : isom</div><div dir="ltr"> minor_version : 512</div><div dir="ltr"> compatible_brands: isomiso2avc1mp41</div><div dir="ltr"> encoder : Lavf54.29.104</div><div dir="ltr"> Duration: 00:04:13.91, start: 0.000000, bitrate: 20284 kb/s</div><div dir="ltr"> Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 3840x2160 [SAR 1:1 DAR 16:9], 20153 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc</div><div dir="ltr"> Metadata:</div><div dir="ltr"> handler_name : VideoHandler</div><div dir="ltr"> Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 125 kb/s</div><div dir="ltr"> Metadata:</div><div dir="ltr"> handler_name : SoundHandler</div><div style><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-weight:bold">------------------------------------------------------------------------</span><span style="color:rgb(51,51,51);font-family:Arial,sans-serif"><b><br></b></span></div><div style><font color="#333333" face="Arial, sans-serif" size="4"><i>Hexa of the beginning of the file</i></font></div><div style><font color="#333333" face="Arial, sans-serif"><div>0000 0020 6674 7970 6973 6f6d 0000 0200</div><div>6973 6f6d 6973 6f32 6176 6331 6d70 3431</div><div>0000 0008 6672 6565 0003 fd2a 6d64 6174</div><div>0000 02a1 0605 ffff 9ddc 45e9 bde6 d948</div><div>b796 2cd8 20d9 23ee ef78 3236 3420 2d20</div><div>636f 7265 2031 3235 202d 2048 2e32 3634</div><div>2f4d 5045 472d 3420 4156 4320 636f 6465</div><div>6320 2d20 436f 7079 6c65 6674 2032 3030</div><div>332d 3230 3132 202d 2068 7474 703a 2f2f</div><div>7777 772e 7669 6465 6f6c 616e 2e6f 7267</div><div>2f78 3236 342e 6874 6d6c 202d 206f 7074</div><div>696f 6e73 3a20 6361 6261 633d 3120 7265</div><div>663d 3320 6465 626c 6f63 6b3d 313a 303a</div><div>3020 616e 616c 7973 653d 3078 333a 3078</div><div>3131 3320 6d65 3d68 6578 2073 7562 6d65</div><div>3d37 2070 7379 3d31 2070 7379 5f72 643d</div><div>312e 3030 3a30 2e30 3020 6d69 7865 645f</div><div>7265 663d 3120 6d65 5f72 616e 6765 3d31</div><div>3620 6368 726f 6d61 5f6d 653d 3120 7472</div><div>656c 6c69 733d 3120 3878 3864 6374 3d31</div><div>2063 716d 3d30 2064 6561 647a 6f6e 653d</div><div>3231 2c31 3120 6661 7374 5f70 736b 6970</div><div>3d31 2063 6872 6f6d 615f 7170 5f6f 6666</div><div>7365 743d 2d32 2074 6872 6561 6473 3d31</div><div>3220 6c6f 6f6b 6168 6561 645f 7468 7265</div><div>6164 733d 3220 736c 6963 6564 5f74 6872</div><div>6561 6473 3d30 206e 723d 3020 6465 6369</div><div>6d61 7465 3d31 2069 6e74 6572 6c61 6365</div><div>643d 3020 626c 7572 6179 5f63 6f6d 7061</div><div>743d 3020 636f 6e73 7472 6169 6e65 645f</div><div>696e 7472 613d 3020 6266 7261 6d65 733d</div><div>3320 625f 7079 7261 6d69 643d 3220 625f</div><div>6164 6170 743d 3120 625f 6269 6173 3d30</div><div>2064 6972 6563 743d 3120 7765 6967 6874</div><div>623d 3120 6f70 656e 5f67 6f70 3d30 2077</div><div>6569 6768 7470 3d32 206b 6579 696e 743d</div><div>3235 3020 6b65 7969 6e74 5f6d 696e 3d32</div><div>3520 7363 656e 6563 7574 3d34 3020 696e</div><div>7472 615f 7265 6672 6573 683d 3020 7263</div><div>5f6c 6f6f 6b61 6865 6164 3d34 3020 7263</div><div>3d63 7266 206d 6274 7265 653d 3120 6372</div><div>663d 3233 2e30 2071 636f 6d70 3d30 2e36</div><div>3020 7170 6d69 6e3d 3020 7170 6d61 783d</div><div>3639 2071 7073 7465 703d 3420 6970 5f72</div><div>6174 696f 3d31 2e34 3020 6171 3d31 3a31</div><div>2e30 3000 8000 0006 1265 8884 0067 fd24</div><div>a004 3c3c 0a6c abfe 7d37 5d6b f148 e085</div><div>8c69 4be2 0000 0300 0003 0000 0300 0003</div><div>0000 0300 0003 0005 5d6b d528 4627 b6e3</div><div>4000 0003 0000 0300 0003 0000 0300 6380</div></font></div><div style><span style="color:rgb(51,51,51);font-family:Arial,sans-serif"><b>------------------------------------------------------------------------</b></span></div><div style><span style="color:rgb(51,51,51);font-family:Arial,sans-serif"><font size="4"><i>Code use to decode the frame</i></font></span></div><div style><font color="#333333" face="Arial, sans-serif"><div>int ret = avcodec_decode_video2( _codec->getAVCodecContext(), _frame, &got_frame, &packet );</div><div>av_free_packet( &packet );</div><div><br></div><div>if( ! nextPacketRead && ret == 0 && got_frame == 0 ) // error or end of file</div><div><span class="" style="white-space:pre"> </span>return false;</div><div>if( ret < 0 )<br></div><div>{</div></font><font color="#333333" face="Arial, sans-serif"><div><span style="white-space:pre"> </span>char err[AV_ERROR_MAX_STRING_SIZE];</div><div><span class="" style="white-space:pre"> </span>av_strerror( ret, err, sizeof(err) );</div><div><span class="" style="white-space:pre"> </span>throw std::runtime_error( "an error occured during video decoding - " + std::string(err) );</div><div>}</div></font></div><div style><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-weight:bold">------------------------------------------------------------------------</span><br></div><div style><span style="color:rgb(51,51,51);font-family:Arial,sans-serif;font-weight:bold"><br></span></div><div style><span style="color:rgb(0,0,0);font-family:HelveticaNeue,'Helvetica Neue',Helvetica,Arial,'Lucida Grande',sans-serif;font-size:12px">Cheers,</span><br></div><div style><br></div><div style><div style="font-size:13px">Clément<br></div></div></div></div></div>
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