Hi,
I would like to ask some questions. I am doing a project measuring streaming videos. Currently, I use ffmpeg to get video info and trying to read some frames. I tried using this https://www.ffmpeg.org/doxygen/3.1/avio_reading_8c-example.html with av_read_frame() from ffmpeg's example to try with mp4 files downloaded from youtube and dtube<http://d.tube>. Only videos from dtube generate an error, as follows: [mov,mp4,m4a,3gp,3g2,mj2 @ 0xed4040] stream 0, offset 0x30: partial file [mov,mp4,m4a,3gp,3g2,mj2 @ 0xed4040] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 854x480, 1059 kb/s): unspecified pixel format Consider increasing the value for the 'analyzeduration' and 'probesize' options [mov,mp4,m4a,3gp,3g2,mj2 @ 0xed4040] Could not find codec parameters for stream 1 (Audio: aac (mp4a / 0x6134706D), 44100 Hz, 2 channels, 127 kb/s): unspecified sample format Consider increasing the value for the 'analyzeduration' and 'probesize' options Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dtube.mp4': Metadata: major_brand : isom minor_version : 512 compatible_brands: isomiso2avc1mp41 encoder : Lavf57.56.101 Duration: 00:06:03.50, bitrate: N/A Stream #0:0(eng): Video: h264 (avc1 / 0x31637661), none, 854x480, 1059 kb/s, SAR 1280:1281 DAR 16:9, 29.97 fps, 29.97 tbr, 30k tbn, 30k tbc (default) Metadata: handler_name : VideoHandler Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 44100 Hz, 2 channels, 127 kb/s (default) Metadata: handler_name : SoundHandler [mov,mp4,m4a,3gp,3g2,mj2 @ 0xed4040] stream 0, offset 0x30: partial file av_read_frame: Invalid data found when processing input I have already tried with different versions of ffmpeg. I would be appreciated if someone could help me with this. Regards, Sornrakitch
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