avconv: reformat the options table.

1 files changed, 175 insertions, 92 deletions

diff --git a/avconv_opt.c b/avconv_opt.c
index 12438610a6..e133278582 100644
--- a/avconv_opt.c
+++ b/avconv_opt.c
@@ -1836,111 +1836,194 @@ void show_usage(void)
 const OptionDef options[] = {
     /* main options */
 #include "cmdutils_common_opts.h"
-    { "f", HAS_ARG | OPT_STRING | OPT_OFFSET, {.off = OFFSET(format)}, "force format", "fmt" },
-    { "i", HAS_ARG | OPT_FUNC2, {.func2_arg = opt_input_file}, "input file name", "filename" },
-    { "y", OPT_BOOL, {&file_overwrite}, "overwrite output files" },
-    { "c", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(codec_names)}, "codec name", "codec" },
-    { "codec", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(codec_names)}, "codec name", "codec" },
-    { "pre", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(presets)}, "preset name", "preset" },
-    { "map", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {.func2_arg = opt_map}, "set input stream mapping", "[-]input_file_id[:stream_specifier][,sync_file_id[:stream_specifier]]" },
-    { "map_metadata", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(metadata_map)}, "set metadata information of outfile from infile",
-      "outfile[,metadata]:infile[,metadata]" },
-    { "map_chapters",  OPT_INT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(chapters_input_file)},  "set chapters mapping", "input_file_index" },
-    { "t", HAS_ARG | OPT_TIME | OPT_OFFSET, {.off = OFFSET(recording_time)}, "record or transcode \"duration\" seconds of audio/video", "duration" },
-    { "fs", HAS_ARG | OPT_INT64 | OPT_OFFSET, {.off = OFFSET(limit_filesize)}, "set the limit file size in bytes", "limit_size" }, //
-    { "ss", HAS_ARG | OPT_TIME | OPT_OFFSET, {.off = OFFSET(start_time)}, "set the start time offset", "time_off" },
-    { "itsoffset", HAS_ARG | OPT_TIME | OPT_OFFSET, {.off = OFFSET(input_ts_offset)}, "set the input ts offset", "time_off" },
-    { "itsscale", HAS_ARG | OPT_DOUBLE | OPT_SPEC, {.off = OFFSET(ts_scale)}, "set the input ts scale", "scale" },
-    { "metadata", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(metadata)}, "add metadata", "string=string" },
-    { "dframes", HAS_ARG | OPT_FUNC2, {.func2_arg = opt_data_frames}, "set the number of data frames to record", "number" },
-    { "benchmark", OPT_BOOL | OPT_EXPERT, {&do_benchmark},
-      "add timings for benchmarking" },
-    { "timelimit", HAS_ARG, {.func_arg = opt_timelimit}, "set max runtime in seconds", "limit" },
-    { "dump", OPT_BOOL | OPT_EXPERT, {&do_pkt_dump},
-      "dump each input packet" },
-    { "hex", OPT_BOOL | OPT_EXPERT, {&do_hex_dump},
-      "when dumping packets, also dump the payload" },
-    { "re", OPT_BOOL | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(rate_emu)}, "read input at native frame rate", "" },
-    { "target", HAS_ARG | OPT_FUNC2, {.func2_arg = opt_target}, "specify target file type (\"vcd\", \"svcd\", \"dvd\", \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
-    { "vsync", HAS_ARG | OPT_EXPERT, {opt_vsync}, "video sync method", "" },
-    { "async", HAS_ARG | OPT_INT | OPT_EXPERT, {&audio_sync_method}, "audio sync method", "" },
-    { "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {&audio_drift_threshold}, "audio drift threshold", "threshold" },
-    { "copyts", OPT_BOOL | OPT_EXPERT, {&copy_ts}, "copy timestamps" },
-    { "copytb", OPT_BOOL | OPT_EXPERT, {&copy_tb}, "copy input stream time base when stream copying" },
-    { "shortest", OPT_BOOL | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(shortest)}, "finish encoding within shortest input" },
-    { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {&dts_delta_threshold}, "timestamp discontinuity delta threshold", "threshold" },
-    { "xerror", OPT_BOOL, {&exit_on_error}, "exit on error", "error" },
-    { "copyinkf", OPT_BOOL | OPT_EXPERT | OPT_SPEC, {.off = OFFSET(copy_initial_nonkeyframes)}, "copy initial non-keyframes" },
-    { "frames", OPT_INT64 | HAS_ARG | OPT_SPEC, {.off = OFFSET(max_frames)}, "set the number of frames to record", "number" },
-    { "tag",   OPT_STRING | HAS_ARG | OPT_SPEC, {.off = OFFSET(codec_tags)}, "force codec tag/fourcc", "fourcc/tag" },
-    { "q", HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC, {.off = OFFSET(qscale)}, "use fixed quality scale (VBR)", "q" },
-    { "qscale", HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC, {.off = OFFSET(qscale)}, "use fixed quality scale (VBR)", "q" },
-    { "filter", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(filters)}, "set stream filterchain", "filter_list" },
-    { "filter_complex", HAS_ARG | OPT_EXPERT, {.func_arg = opt_filter_complex}, "create a complex filtergraph", "graph_description" },
-    { "stats", OPT_BOOL, {&print_stats}, "print progress report during encoding", },
-    { "attach", HAS_ARG | OPT_FUNC2, {.func2_arg = opt_attach}, "add an attachment to the output file", "filename" },
-    { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(dump_attachment)}, "extract an attachment into a file", "filename" },
-    { "cpuflags", HAS_ARG | OPT_EXPERT, {.func_arg = opt_cpuflags}, "set CPU flags mask", "mask" },
+    { "f",              HAS_ARG | OPT_STRING | OPT_OFFSET,           { .off       = OFFSET(format) },
+        "force format", "fmt" },
+    { "i",              HAS_ARG | OPT_FUNC2,                         { .func2_arg = opt_input_file },
+        "input file name", "filename" },
+    { "y",              OPT_BOOL,                                    {              &file_overwrite },
+        "overwrite output files" },
+    { "c",              HAS_ARG | OPT_STRING | OPT_SPEC,             { .off       = OFFSET(codec_names) },
+        "codec name", "codec" },
+    { "codec",          HAS_ARG | OPT_STRING | OPT_SPEC,             { .off       = OFFSET(codec_names) },
+        "codec name", "codec" },
+    { "pre",            HAS_ARG | OPT_STRING | OPT_SPEC,             { .off       = OFFSET(presets) },
+        "preset name", "preset" },
+    { "map",            HAS_ARG | OPT_EXPERT | OPT_FUNC2,            { .func2_arg = opt_map },
+        "set input stream mapping",
+        "[-]input_file_id[:stream_specifier][,sync_file_id[:stream_specifier]]" },
+    { "map_metadata",   HAS_ARG | OPT_STRING | OPT_SPEC,             { .off       = OFFSET(metadata_map) },
+        "set metadata information of outfile from infile",
+        "outfile[,metadata]:infile[,metadata]" },
+    { "map_chapters",   HAS_ARG | OPT_INT | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(chapters_input_file) },
+        "set chapters mapping", "input_file_index" },
+    { "t",              HAS_ARG | OPT_TIME | OPT_OFFSET,             { .off = OFFSET(recording_time) },
+        "record or transcode \"duration\" seconds of audio/video",
+        "duration" },
+    { "fs",             HAS_ARG | OPT_INT64 | OPT_OFFSET,            { .off = OFFSET(limit_filesize) },
+        "set the limit file size in bytes", "limit_size" },
+    { "ss",             HAS_ARG | OPT_TIME | OPT_OFFSET,             { .off = OFFSET(start_time) },
+        "set the start time offset", "time_off" },
+    { "itsoffset",      HAS_ARG | OPT_TIME | OPT_OFFSET,             { .off = OFFSET(input_ts_offset) },
+        "set the input ts offset", "time_off" },
+    { "itsscale",       HAS_ARG | OPT_DOUBLE | OPT_SPEC,             { .off = OFFSET(ts_scale) },
+        "set the input ts scale", "scale" },
+    { "metadata",       HAS_ARG | OPT_STRING | OPT_SPEC,             { .off = OFFSET(metadata) },
+        "add metadata", "string=string" },
+    { "dframes",        HAS_ARG | OPT_FUNC2,                         { .func2_arg = opt_data_frames },
+        "set the number of data frames to record", "number" },
+    { "benchmark",      OPT_BOOL | OPT_EXPERT,                       { &do_benchmark },
+        "add timings for benchmarking" },
+    { "timelimit",      HAS_ARG,                                     { .func_arg = opt_timelimit },
+        "set max runtime in seconds", "limit" },
+    { "dump",           OPT_BOOL | OPT_EXPERT,                       { &do_pkt_dump },
+        "dump each input packet" },
+    { "hex",            OPT_BOOL | OPT_EXPERT,                       { &do_hex_dump },
+        "when dumping packets, also dump the payload" },
+    { "re",             OPT_BOOL | OPT_EXPERT | OPT_OFFSET,          { .off = OFFSET(rate_emu) },
+        "read input at native frame rate", "" },
+    { "target",         HAS_ARG | OPT_FUNC2,                         { .func2_arg = opt_target },
+        "specify target file type (\"vcd\", \"svcd\", \"dvd\","
+        " \"dv\", \"dv50\", \"pal-vcd\", \"ntsc-svcd\", ...)", "type" },
+    { "vsync",          HAS_ARG | OPT_EXPERT,                        { opt_vsync },
+        "video sync method", "" },
+    { "async",          HAS_ARG | OPT_INT | OPT_EXPERT,              { &audio_sync_method },
+        "audio sync method", "" },
+    { "adrift_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT,          { &audio_drift_threshold },
+        "audio drift threshold", "threshold" },
+    { "copyts",         OPT_BOOL | OPT_EXPERT,                       { &copy_ts },
+        "copy timestamps" },
+    { "copytb",         OPT_BOOL | OPT_EXPERT,                       { &copy_tb },
+        "copy input stream time base when stream copying" },
+    { "shortest",       OPT_BOOL | OPT_EXPERT | OPT_OFFSET,          { .off = OFFSET(shortest) },
+        "finish encoding within shortest input" },
+    { "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT,       { &dts_delta_threshold },
+        "timestamp discontinuity delta threshold", "threshold" },
+    { "xerror",         OPT_BOOL,                                    { &exit_on_error },
+        "exit on error", "error" },
+    { "copyinkf",       OPT_BOOL | OPT_EXPERT | OPT_SPEC,            { .off = OFFSET(copy_initial_nonkeyframes) },
+        "copy initial non-keyframes" },
+    { "frames",         OPT_INT64 | HAS_ARG | OPT_SPEC,              { .off = OFFSET(max_frames) },
+        "set the number of frames to record", "number" },
+    { "tag",            OPT_STRING | HAS_ARG | OPT_SPEC,             { .off = OFFSET(codec_tags) },
+        "force codec tag/fourcc", "fourcc/tag" },
+    { "q",              HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC,{ .off = OFFSET(qscale) },
+        "use fixed quality scale (VBR)", "q" },
+    { "qscale",         HAS_ARG | OPT_EXPERT | OPT_DOUBLE | OPT_SPEC,{ .off = OFFSET(qscale) },
+        "use fixed quality scale (VBR)", "q" },
+    { "filter",         HAS_ARG | OPT_STRING | OPT_SPEC,             { .off = OFFSET(filters) },
+        "set stream filterchain", "filter_list" },
+    { "filter_complex", HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_filter_complex },
+        "create a complex filtergraph", "graph_description" },
+    { "stats",          OPT_BOOL,                                    { &print_stats },
+        "print progress report during encoding", },
+    { "attach",         HAS_ARG | OPT_FUNC2,                         { .func2_arg = opt_attach },
+        "add an attachment to the output file", "filename" },
+    { "dump_attachment", HAS_ARG | OPT_STRING | OPT_SPEC,            { .off = OFFSET(dump_attachment) },
+        "extract an attachment into a file", "filename" },
+    { "cpuflags",       HAS_ARG | OPT_EXPERT,                        { .func_arg = opt_cpuflags },
+        "set CPU flags mask", "mask" },
 
     /* video options */
-    { "vframes", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {.func2_arg = opt_video_frames}, "set the number of video frames to record", "number" },
-    { "r", HAS_ARG | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_rates)}, "set frame rate (Hz value, fraction or abbreviation)", "rate" },
-    { "s", HAS_ARG | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_sizes)}, "set frame size (WxH or abbreviation)", "size" },
-    { "aspect", HAS_ARG | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_aspect_ratios)}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
-    { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(frame_pix_fmts)}, "set pixel format", "format" },
-    { "vn", OPT_BOOL | OPT_VIDEO | OPT_OFFSET, {.off = OFFSET(video_disable)}, "disable video" },
-    { "vdt", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {&video_discard}, "discard threshold", "n" },
-    { "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(rc_overrides)}, "rate control override for specific intervals", "override" },
-    { "vcodec", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {.func2_arg = opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
-    { "same_quant", OPT_BOOL | OPT_VIDEO, {&same_quant},
-      "use same quantizer as source (implies VBR)" },
-    { "pass", HAS_ARG | OPT_VIDEO, {opt_pass}, "select the pass number (1 or 2)", "n" },
-    { "passlogfile", HAS_ARG | OPT_STRING | OPT_VIDEO, {&pass_logfilename_prefix}, "select two pass log file name prefix", "prefix" },
-    { "deinterlace", OPT_EXPERT | OPT_VIDEO, {opt_deinterlace},
-      "this option is deprecated, use the yadif filter instead" },
-    { "vstats", OPT_EXPERT | OPT_VIDEO, {&opt_vstats}, "dump video coding statistics to file" },
-    { "vstats_file", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {opt_vstats_file}, "dump video coding statistics to file", "file" },
-    { "vf", HAS_ARG | OPT_VIDEO | OPT_FUNC2, {.func2_arg = opt_video_filters}, "video filters", "filter list" },
-    { "intra_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(intra_matrices)}, "specify intra matrix coeffs", "matrix" },
-    { "inter_matrix", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_STRING | OPT_SPEC, {.off = OFFSET(inter_matrices)}, "specify inter matrix coeffs", "matrix" },
-    { "top", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_INT| OPT_SPEC, {.off = OFFSET(top_field_first)}, "top=1/bottom=0/auto=-1 field first", "" },
-    { "dc", OPT_INT | HAS_ARG | OPT_EXPERT | OPT_VIDEO, {&intra_dc_precision}, "intra_dc_precision", "precision" },
-    { "vtag", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_FUNC2, {.func2_arg = opt_video_tag}, "force video tag/fourcc", "fourcc/tag" },
-    { "qphist", OPT_BOOL | OPT_EXPERT | OPT_VIDEO, {&qp_hist }, "show QP histogram" },
-    { "force_fps", OPT_BOOL | OPT_EXPERT | OPT_VIDEO | OPT_SPEC, {.off = OFFSET(force_fps)}, "force the selected framerate, disable the best supported framerate selection" },
-    { "streamid", HAS_ARG | OPT_EXPERT | OPT_FUNC2, {.func2_arg = opt_streamid}, "set the value of an outfile streamid", "streamIndex:value" },
-    { "force_key_frames", OPT_STRING | HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_SPEC, {.off = OFFSET(forced_key_frames)}, "force key frames at specified timestamps", "timestamps" },
+    { "vframes",      OPT_VIDEO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_video_frames },
+        "set the number of video frames to record", "number" },
+    { "r",            OPT_VIDEO | HAS_ARG  | OPT_STRING | OPT_SPEC,              { .off = OFFSET(frame_rates) },
+        "set frame rate (Hz value, fraction or abbreviation)", "rate" },
+    { "s",            OPT_VIDEO | HAS_ARG  | OPT_STRING | OPT_SPEC,              { .off = OFFSET(frame_sizes) },
+        "set frame size (WxH or abbreviation)", "size" },
+    { "aspect",       OPT_VIDEO | HAS_ARG  | OPT_STRING | OPT_SPEC,              { .off = OFFSET(frame_aspect_ratios) },
+        "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },
+    { "pix_fmt",      OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC, { .off = OFFSET(frame_pix_fmts) },
+        "set pixel format", "format" },
+    { "vn",           OPT_VIDEO | OPT_BOOL  | OPT_OFFSET,                        { .off = OFFSET(video_disable) },
+        "disable video" },
+    { "vdt",          OPT_VIDEO | OPT_INT | HAS_ARG | OPT_EXPERT ,               { &video_discard },
+        "discard threshold", "n" },
+    { "rc_override",  OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC, { .off = OFFSET(rc_overrides) },
+        "rate control override for specific intervals", "override" },
+    { "vcodec",       OPT_VIDEO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_video_codec },
+        "force video codec ('copy' to copy stream)", "codec" },
+    { "same_quant",   OPT_VIDEO | OPT_BOOL ,                                     { &same_quant },
+        "use same quantizer as source (implies VBR)" },
+    { "pass",         OPT_VIDEO | HAS_ARG ,                                      { opt_pass },
+        "select the pass number (1 or 2)", "n" },
+    { "passlogfile",  OPT_VIDEO | HAS_ARG | OPT_STRING ,                         { &pass_logfilename_prefix },
+        "select two pass log file name prefix", "prefix" },
+    { "deinterlace",  OPT_VIDEO | OPT_EXPERT ,                                   { .func_arg = opt_deinterlace },
+        "this option is deprecated, use the yadif filter instead" },
+    { "vstats",       OPT_VIDEO | OPT_EXPERT ,                                   { &opt_vstats },
+        "dump video coding statistics to file" },
+    { "vstats_file",  OPT_VIDEO | HAS_ARG | OPT_EXPERT ,                         { opt_vstats_file },
+        "dump video coding statistics to file", "file" },
+    { "vf",           OPT_VIDEO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_video_filters },
+        "video filters", "filter list" },
+    { "intra_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC, { .off = OFFSET(intra_matrices) },
+        "specify intra matrix coeffs", "matrix" },
+    { "inter_matrix", OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_STRING | OPT_SPEC, { .off = OFFSET(inter_matrices) },
+        "specify inter matrix coeffs", "matrix" },
+    { "top",          OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_INT| OPT_SPEC,     { .off = OFFSET(top_field_first) },
+        "top=1/bottom=0/auto=-1 field first", "" },
+    { "dc",           OPT_VIDEO | OPT_INT | HAS_ARG | OPT_EXPERT ,               { &intra_dc_precision },
+        "intra_dc_precision", "precision" },
+    { "vtag",         OPT_VIDEO | HAS_ARG | OPT_EXPERT  | OPT_FUNC2,             { .func2_arg = opt_video_tag },
+        "force video tag/fourcc", "fourcc/tag" },
+    { "qphist",       OPT_VIDEO | OPT_BOOL | OPT_EXPERT ,                        { &qp_hist },
+        "show QP histogram" },
+    { "force_fps",    OPT_VIDEO | OPT_BOOL | OPT_EXPERT  | OPT_SPEC,             { .off = OFFSET(force_fps) },
+        "force the selected framerate, disable the best supported framerate selection" },
+    { "streamid",     OPT_VIDEO | HAS_ARG | OPT_EXPERT | OPT_FUNC2,              { .func2_arg = opt_streamid },
+        "set the value of an outfile streamid", "streamIndex:value" },
+    { "force_key_frames", OPT_VIDEO | OPT_STRING | HAS_ARG | OPT_EXPERT  | OPT_SPEC,
+        { .off = OFFSET(forced_key_frames) }, "force key frames at specified timestamps", "timestamps" },
 
     /* audio options */
-    { "aframes", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {.func2_arg = opt_audio_frames}, "set the number of audio frames to record", "number" },
-    { "aq", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {.func2_arg = opt_audio_qscale}, "set audio quality (codec-specific)", "quality", },
-    { "ar", HAS_ARG | OPT_AUDIO | OPT_INT | OPT_SPEC, {.off = OFFSET(audio_sample_rate)}, "set audio sampling rate (in Hz)", "rate" },
-    { "ac", HAS_ARG | OPT_AUDIO | OPT_INT | OPT_SPEC, {.off = OFFSET(audio_channels)}, "set number of audio channels", "channels" },
-    { "an", OPT_BOOL | OPT_AUDIO | OPT_OFFSET, {.off = OFFSET(audio_disable)}, "disable audio" },
-    { "acodec", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {.func2_arg = opt_audio_codec}, "force audio codec ('copy' to copy stream)", "codec" },
-    { "atag", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_FUNC2, {.func2_arg = opt_audio_tag}, "force audio tag/fourcc", "fourcc/tag" },
-    { "vol", OPT_INT | HAS_ARG | OPT_AUDIO, {&audio_volume}, "change audio volume (256=normal)" , "volume" }, //
-    { "sample_fmt", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_SPEC | OPT_STRING, {.off = OFFSET(sample_fmts)}, "set sample format", "format" },
-    { "channel_layout", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_FUNC2, {.func2_arg = opt_channel_layout}, "set channel layout", "layout" },
-    { "af", HAS_ARG | OPT_AUDIO | OPT_FUNC2, {.func2_arg = opt_audio_filters}, "audio filters", "filter list" },
+    { "aframes",        OPT_AUDIO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_audio_frames },
+        "set the number of audio frames to record", "number" },
+    { "aq",             OPT_AUDIO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_audio_qscale },
+        "set audio quality (codec-specific)", "quality", },
+    { "ar",             OPT_AUDIO | HAS_ARG  | OPT_INT | OPT_SPEC,                 { .off = OFFSET(audio_sample_rate) },
+        "set audio sampling rate (in Hz)", "rate" },
+    { "ac",             OPT_AUDIO | HAS_ARG  | OPT_INT | OPT_SPEC,                 { .off = OFFSET(audio_channels) },
+        "set number of audio channels", "channels" },
+    { "an",             OPT_AUDIO | OPT_BOOL | OPT_OFFSET,                         { .off = OFFSET(audio_disable) },
+        "disable audio" },
+    { "acodec",         OPT_AUDIO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_audio_codec },
+        "force audio codec ('copy' to copy stream)", "codec" },
+    { "atag",           OPT_AUDIO | HAS_ARG  | OPT_EXPERT | OPT_FUNC2,             { .func2_arg = opt_audio_tag },
+        "force audio tag/fourcc", "fourcc/tag" },
+    { "vol",            OPT_AUDIO | HAS_ARG  | OPT_INT,                            { &audio_volume },
+        "change audio volume (256=normal)" , "volume" },
+    { "sample_fmt",     OPT_AUDIO | HAS_ARG  | OPT_EXPERT | OPT_SPEC | OPT_STRING, { .off = OFFSET(sample_fmts) },
+        "set sample format", "format" },
+    { "channel_layout", OPT_AUDIO | HAS_ARG  | OPT_EXPERT | OPT_FUNC2,             { .func2_arg = opt_channel_layout },
+        "set channel layout", "layout" },
+    { "af",             OPT_AUDIO | HAS_ARG  | OPT_FUNC2,                          { .func2_arg = opt_audio_filters },
+        "audio filters", "filter list" },
 
     /* subtitle options */
-    { "sn", OPT_BOOL | OPT_SUBTITLE | OPT_OFFSET, {.off = OFFSET(subtitle_disable)}, "disable subtitle" },
-    { "scodec", HAS_ARG | OPT_SUBTITLE | OPT_FUNC2, {.func2_arg = opt_subtitle_codec}, "force subtitle codec ('copy' to copy stream)", "codec" },
-    { "stag", HAS_ARG | OPT_EXPERT | OPT_SUBTITLE | OPT_FUNC2, {.func2_arg = opt_subtitle_tag}, "force subtitle tag/fourcc", "fourcc/tag" },
+    { "sn",     OPT_SUBTITLE | OPT_BOOL | OPT_OFFSET, { .off = OFFSET(subtitle_disable) },
+        "disable subtitle" },
+    { "scodec", OPT_SUBTITLE | HAS_ARG  | OPT_FUNC2,  { .func2_arg = opt_subtitle_codec },
+        "force subtitle codec ('copy' to copy stream)", "codec" },
+    { "stag",   OPT_SUBTITLE | HAS_ARG  | OPT_EXPERT  | OPT_FUNC2, { .func2_arg = opt_subtitle_tag }
+        , "force subtitle tag/fourcc", "fourcc/tag" },
 
     /* grab options */
-    { "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, {&input_sync}, "sync read on input", "" },
+    { "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, { &input_sync }, "sync read on input", "" },
 
     /* muxer options */
-    { "muxdelay", OPT_FLOAT | HAS_ARG | OPT_EXPERT   | OPT_OFFSET, {.off = OFFSET(mux_max_delay)}, "set the maximum demux-decode delay", "seconds" },
-    { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, {.off = OFFSET(mux_preload)},   "set the initial demux-decode delay", "seconds" },
+    { "muxdelay",   OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_max_delay) },
+        "set the maximum demux-decode delay", "seconds" },
+    { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT | OPT_OFFSET, { .off = OFFSET(mux_preload) },
+        "set the initial demux-decode delay", "seconds" },
 
-    { "bsf", HAS_ARG | OPT_STRING | OPT_SPEC, {.off = OFFSET(bitstream_filters)}, "A comma-separated list of bitstream filters", "bitstream_filters" },
+    { "bsf", HAS_ARG | OPT_STRING | OPT_SPEC, { .off = OFFSET(bitstream_filters) },
+        "A comma-separated list of bitstream filters", "bitstream_filters" },
 
     /* data codec support */
-    { "dcodec", HAS_ARG | OPT_DATA | OPT_FUNC2, {.func2_arg = opt_data_codec}, "force data codec ('copy' to copy stream)", "codec" },
+    { "dcodec", HAS_ARG | OPT_DATA | OPT_FUNC2, { .func2_arg = opt_data_codec },
+        "force data codec ('copy' to copy stream)", "codec" },
 
-    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {.func_arg = opt_default}, "generic catch all option", "" },
+    { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default },
+        "generic catch all option", "" },
     { NULL, },
 };