I tried downloading a video with youtube-dl with 3gp format. When I try to play it on VLC or any other application it doesn't play. This is the output I get when trying to download it again.
youtube-dl https://youtu.be/lVFq__mrmlQ -f worst -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://youtu.be/lVFq__mrmlQ', '-f', 'worst', '-v']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.03.14
[debug] Python version 3.6.5 (CPython) - Linux-4.15.0-29-generic-x86_64-with-Ubuntu-18.04-bionic
[debug] exe versions: ffmpeg 3.4.2-2, ffprobe 3.4.2-2, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] lVFq__mrmlQ: Downloading webpage
[youtube] lVFq__mrmlQ: Downloading video info webpage
[youtube] lVFq__mrmlQ: Extracting video information
[debug] Invoking downloader on 'https://r4---sn-h5q7dnee.googlevideo.com/videoplayback?signature=5432A7990BB3336616E21753F1D53171D09CBC31.B98E84CF0C51F39C613F53311128CD9E7A3872EA&c=WEB&lmt=1514133618343257&key=yt6&itag=17&fvip=3&mn=sn-h5q7dnee%2Csn-h5q7knes&mm=31%2C29&pl=24&mime=video%2F3gpp&id=o-AKWLZ7MpY1ip3PlxZJ7vXBY-jDqbVpUeI_Bls_o_g-GV&ipbits=0&requiressl=yes&ip=90.174.4.0&gir=yes&mt=1532653244&ms=au%2Crdu&dur=18470.684&initcwndbps=1011250&ei=S29aW5SjH4bIVseNkfgE&expire=1532674987&mv=m&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cpl%2Crequiressl%2Csource%2Cexpire&clen=195336027&source=youtube&ratebypass=yes'
[download] Heroes of Might and Magic III - No Might 1v7 FFA (200%)-lVFq__mrmlQ.3gp has already been downloaded
[download] 100% of 186.29MiB
I tried converting it with ffmpeg, but I get the following message:
ffmpeg -i Heroes\ of\ Might\ and\ Magic\ III\ -\ No\ Might\ 1v7\ FFA\ \(200%\)-lVFq__mrmlQ.3gp Heroes\ of\ Might\ and\ Magic\ III\ -\ No\ Might\ 1v7\ FFA\ \(200%\)-lVFq__mrmlQ.mp4
ffmpeg version 3.4.2-2 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu2)
configuration: --prefix=/usr --extra-version=2 --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
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x562e75c728c0] Could not find codec parameters for stream 0 (Video: mpeg4 (mp4v / 0x7634706D), none, 221 kb/s): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Heroes of Might and Magic III - No Might 1v7 FFA (200%)-lVFq__mrmlQ.3gp':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: isommp42
creation_time : 2017-12-24T16:43:17.000000Z
Duration: 05:07:50.68, bitrate: 84 kb/s
Stream #0:0(und): Video: mpeg4 (mp4v / 0x7634706D), none, 221 kb/s, 30 fps, 30 tbr, 15360 tbn, 15360 tbc (default)
Metadata:
creation_time : 2017-12-24T16:43:17.000000Z
handler_name : IsoMedia File Produced by Google, 5-11-2011
Output #0, mp4, to 'Heroes of Might and Magic III - No Might 1v7 FFA (200%)-lVFq__mrmlQ.mp4':
Output file #0 does not contain any stream
With this information, I don't know how to proceed. I already tried ffmpeg with the max analyzeduration and probesize and it still doesn't work. Any ideas?
EDIT: added list of formats youtube-dl detected.
youtube-dl -F https://youtu.be/lVFq__mrmlQ
[youtube] lVFq__mrmlQ: Downloading webpage
[youtube] lVFq__mrmlQ: Downloading video info webpage
[youtube] lVFq__mrmlQ: Extracting video information
[info] Available formats for lVFq__mrmlQ:
format code extension resolution note
249 webm audio only DASH audio 71k , opus @ 50k, 108.83MiB
250 webm audio only DASH audio 85k , opus @ 70k, 142.71MiB
171 webm audio only DASH audio 119k , vorbis@128k, 228.14MiB
140 m4a audio only DASH audio 145k , m4a_dash container, mp4a.40.2@128k, 279.77MiB
251 webm audio only DASH audio 152k , opus @160k, 280.97MiB
160 mp4 256x144 144p 114k , avc1.4d400c, 30fps, video only, 91.12MiB
278 webm 256x144 144p 153k , webm container, vp9, 30fps, video only, 176.00MiB
133 mp4 426x240 240p 258k , avc1.4d4015, 30fps, video only, 188.39MiB
242 webm 426x240 240p 261k , vp9, 30fps, video only, 366.78MiB
243 webm 640x360 360p 528k , vp9, 30fps, video only, 751.54MiB
134 mp4 640x360 360p 758k , avc1.4d401e, 30fps, video only, 539.15MiB
244 webm 854x480 480p 896k , vp9, 30fps, video only, 1.43GiB
135 mp4 854x480 480p 1441k , avc1.4d401f, 30fps, video only, 1.40GiB
247 webm 1280x720 720p 1798k , vp9, 30fps, video only, 3.03GiB
136 mp4 1280x720 720p 2673k , avc1.4d401f, 30fps, video only, 2.86GiB
302 webm 1280x720 720p60 2907k , vp9, 60fps, video only, 5.10GiB
298 mp4 1280x720 720p60 4626k , avc1.4d4020, 60fps, video only, 4.11GiB
17 3gp 176x144 small , mp4v.20.3, mp4a.40.2@ 24k
36 3gp 320x180 small , mp4v.20.3, mp4a.40.2
43 webm 640x360 medium , vp8.0, vorbis@128k
18 mp4 640x360 medium , avc1.42001E, mp4a.40.2@ 96k
22 mp4 1280x720 hd720 , avc1.64001F, mp4a.40.2@192k (best)
The one that got downloaded was number 17.
The issue had nothing to do with codecs or ffmpeg. The file got corrupted during download and further attempts to redownload didn't tell me anything about it. Credit to the user phihag for sharing the sha256 of the file.